CN113856505B - Method for adding high-concentration oxygen-enriched solution by adopting oxygen-enriched solution adding system - Google Patents
Method for adding high-concentration oxygen-enriched solution by adopting oxygen-enriched solution adding system Download PDFInfo
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- CN113856505B CN113856505B CN202111196838.9A CN202111196838A CN113856505B CN 113856505 B CN113856505 B CN 113856505B CN 202111196838 A CN202111196838 A CN 202111196838A CN 113856505 B CN113856505 B CN 113856505B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 607
- 239000001301 oxygen Substances 0.000 title claims abstract description 607
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 607
- 238000000034 method Methods 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 404
- 238000006243 chemical reaction Methods 0.000 claims abstract description 102
- 239000003595 mist Substances 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims abstract description 26
- 239000000243 solution Substances 0.000 claims description 325
- 229920006395 saturated elastomer Polymers 0.000 claims description 36
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 23
- 238000002156 mixing Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- 239000011259 mixed solution Substances 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000006200 vaporizer Substances 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 9
- 230000001154 acute effect Effects 0.000 claims description 7
- 150000002926 oxygen Chemical class 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 230000001502 supplementing effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 238000005266 casting Methods 0.000 description 9
- 238000005273 aeration Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 239000004343 Calcium peroxide Substances 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical group N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 1
- 235000019402 calcium peroxide Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Animal Husbandry (AREA)
- Microbiology (AREA)
- Marine Sciences & Fisheries (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a method for adding a high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system. The method comprises the steps of 1) establishing an oxygen-enriched solution adding system, wherein the oxygen-enriched solution adding system comprises a reaction tank, a diffuser, a pressure regulating valve group and a water pump; a water mist nozzle and an oxygen nozzle are arranged on the top of the inner tank of the reaction tank; a control valve is arranged between the reaction tank and the diffuser; the cylindrical side wall of the diffuser is provided with a channel for releasing the oxygen-enriched solution, namely a small hole or a narrow gap or a combination of the small hole and the narrow gap, which can generate certain back pressure to ensure that the pressure difference between the outlet pressure of the diffuser and the water pressure to be treated is more than 2 bar; 2) The oxygen is regulated to a certain pressure and is sent into a reaction tank; 3) The dissolved water is pressurized to a certain pressure by a water pump and is sent into a reaction tank from the tank top in a high-pressure mist form; 4) The water outlet is provided with an on-line water quality detector, and the opening of the control valve is controlled by connecting the signal receiver with the PLC. The method can accurately regulate the water quality, greatly reduce the generation of bubbles and greatly improve the utilization rate of oxygen.
Description
Technical Field
The invention belongs to the technical field of water treatment, and relates to a method for adding a high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system. The method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system is suitable for occasions with small water treatment capacity and no need of rapidly and massively generating the high-concentration oxygen-enriched solution. Such as a fish pond, shrimp pond, minipond, etc.
Background
Dissolved oxygen is an important water quality chemical parameter, under natural conditions, the oxygen content in the air is not changed greatly, the oxygen dissolution rate in water bodies at different altitudes is slightly different, and mainly due to algae activities, the dissolved oxygen is generated in the water bodies. The amount of dissolved oxygen in water is an index for measuring the self-cleaning capacity of water. Along with the continuous increase of the progress of human activities and industrialization, the problem of water body rich oxidation is more and more serious, the oxygen content in water is reduced due to the water body rich oxidation, the oxygen is consumed by the organic matters in water and the respiration of organisms, the oxygen in water is mainly derived from the photosynthesis of algae and the natural dissolution of the oxygen in air, but the dissolved oxygen is influenced by the day and night illumination time, the air pressure, the natural disasters, the seasonal variation, the water temperature variation and the consumption and death decomposition of animals and plants in the water body to different degrees, so that anaerobic microorganisms are greatly propagated, harmful fermentation intermediates are generated, and the water quality is deteriorated; the importance of dissolved oxygen and control of the dissolved oxygen amount in the water body can be seen by the regeneration … of phosphate and nitrate, which can affect the oxidation neutralization of toxic and harmful substances such as hydrogen sulfide, nitrite and the like in the water body and degrade the decomposition of ammonia nitrogen and organic matters in the water body.
The definition of dissolved oxygen refers to the simple substance of oxygen dissolved in water in a molecular state, is not an element of oxygen in a combined state, is not an oxygen bubble, the abbreviation of dissolved oxygen is DO, oxygen is dissolved in water in a reversible process, and oxygen is dissolved in water and can escape from water.
For different purposes, people need to manually intervene to increase the dissolved oxygen of the water body, and the traditional process mainly comprises methods of aeration, oxygen increasing agent addition and the like. The method for increasing the dissolved oxygen in the water by using the mechanical aeration usually uses an aeration head to drive air into the water body and then stir, when the area of the water body is large, a plurality of devices are needed, and the process is time-consuming, energy-consuming, and has the advantages of increasing the turbidity of the water body and having certain limitation; the method for adding chemical reagents (ammonium persulfate, calcium peroxide, hydrogen peroxide and the like) into water to increase dissolved oxygen is not easy to control: the oxygen utilization efficiency is lower when the adding amount per unit time is too large, and the adding amount per unit time is reduced by manual or mechanical adding and subtracting to prolong the adding time, so that the difficulty of management and implementation is increased, and time and labor are wasted.
At present, many gas factories around the country are equipped with oxygen purification equipment on a large scale under the direction of relevant policies of the country and produce high-purity oxygen, so that the price of the oxygen is greatly reduced and the local purchase of users is facilitated. Because the gas resource is easy to obtain, the full-automatic adding design is adopted, and the operation cost of the oxygen-enriched solution adding system is greatly reduced.
Besides the traditional aeration by using an aeration head, the aeration method is that water to be treated is mixed with oxygen through a venturi nozzle or a static mixer, and then the mixed solution is added into the water to be treated, and the mixed solution can be added into a shallow pool and a high-concentration oxygen-enriched solution pipeline in the mode, but the problems of escape of small bubbles of oxygen and low dissolved oxygen efficiency are also faced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for adding high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system, which can greatly improve the utilization rate of oxygen.
The technical conception of the invention is as follows: feeding gaseous oxygen with certain pressure and oxygen-enriched water with certain pressure into a reaction tank, mixing the gas and the water in a certain proportion in the tank, and generating high-concentration oxygen-enriched solution under the action of the pressure in the tank; sealing the saturated high-concentration oxygen-enriched solution between the reaction tank and the control valve through the control valve, so that the saturated high-concentration oxygen-enriched solution is changed into a supersaturated high-concentration oxygen-enriched solution; and finally, reversely injecting the supersaturated high-concentration oxygen-enriched solution into water to be treated through the diffuser, so that the high-concentration oxygen-enriched solution is instantly fused with the water, the concentration of dissolved oxygen in the water body is increased, the generation of bubbles can be greatly reduced, and the oxygen utilization rate is greatly improved.
The invention aims at realizing the following technical scheme:
The invention discloses a method for adding a high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system, which comprises the following steps of:
(1) Establishing an oxygen-enriched solution adding system; the oxygen-enriched solution adding system comprises a reaction tank, a diffuser, an oxygen pipeline and a fusion water pipeline; a water mist nozzle and an oxygen nozzle are arranged on the top of the inner tank of the reaction tank; a water pump is arranged on the mixing water pipeline; the outlet of the water pump is connected with a water inlet and a water mist nozzle at the top of the reaction tank through a fused water pipeline; the oxygen pipeline is provided with a pressure regulating valve group; the outlet of the pressure regulating valve group is connected with an oxygen inlet and an oxygen nozzle at the top of the reaction tank through an oxygen pipeline; the outlet at the bottom of the reaction tank is connected with the inlet of the diffuser through an oxygen-enriched solution pipeline; a control valve or a restriction orifice plate or an orifice capable of precisely controlling flow and pressure is arranged on an oxygen-enriched solution pipeline between an outlet at the bottom of the reaction tank and an inlet of the diffuser; the diffuser is arranged in the water to be treated; the diffuser is a hollow cylindrical object with one end open and the other end closed; a channel for releasing the oxygen-enriched solution is formed on the cylindrical side wall of the diffuser; the channel for releasing the oxygen-enriched solution is a small hole or a narrow gap or a combination of the small hole and the narrow gap; the channel for releasing the oxygen-enriched solution can generate certain back pressure and enable the supersaturated oxygen-enriched solution to be sprayed into water to be treated at certain outlet pressure, so that a pressure difference of more than 2bar exists between the outlet pressure of the diffuser and the pressure of the water to be treated; the oxygen-enriched solution is a high-concentration oxygen-enriched solution or a high-concentration dissolved oxygen solution;
The diffuser is arranged in raw water or a water pipeline to be treated, which has water flowing, is positioned at the upstream of water flow, and a channel for releasing oxygen-enriched solution is arranged on one half of the side wall of the diffuser; the channels for releasing the oxygen-enriched solution are one or more, or one or more rows; the diffuser is inserted into raw water or a water pipeline perpendicular to the water flow direction, one side of the diffuser, which is provided with a channel for releasing the oxygen-enriched solution, is opposite to the upstream of the water flow, so that the oxygen-enriched solution in the diffuser can be reversely sprayed out of the channel for releasing the oxygen-enriched solution opposite to the water flow, and a vortex reinforced mixing effect can be generated;
Or the diffuser is arranged in a pool, a pond or a sewage tank which is to be treated and has no water flow, and a plurality of or a plurality of rows of channels for releasing the oxygen-enriched solution are arranged on the side walls of both sides of the diffuser or on the whole cylindrical side wall;
(2) The oxygen is regulated to a certain pressure by a pressure regulating valve group and is conveyed to a reaction tank by a pipeline;
(3) Oxygen with a certain pressure (more than 2 bar) enters the tank top of the reaction tank through an oxygen pipeline, meanwhile, dissolved water (oxygen-enriched water after being filtered to remove impurities after being processed by the oxygen-enriched solution casting process) is pressurized to a certain pressure through a water pump, and then is sent into the reaction tank from the tank top through a dissolved water pipeline in a high-pressure mist form, and the pressure in the tank is kept at a certain pressure; in a reaction tank, mixing oxygen with pressurized dissolved water to form a gas-liquid mixture with a certain pressure; the contact area of the water mist and the oxygen is large, the pressure in the tank is raised to a certain pressure, and the oxygen is rapidly dissolved in the water to generate a high-concentration oxygen-enriched solution; the pressure in the tank is continuously increased along with the continuous feeding of oxygen or along with the continuous feeding of water mist with certain pressure into the tank, and when the pressure in the reaction tank reaches certain pressure (more than 2 bar), the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank, the control valve seals the saturated high-concentration oxygen-enriched solution between the reaction tank and the control valve, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to continuous pressure in the reaction tank; the control valve is opened, supersaturated high-concentration oxygen-enriched solution is conveyed to the diffuser through a valve core in the control valve and conveyed to a small hole and/or a narrow slit which are designed on the diffuser and are used for releasing the high-concentration oxygen-enriched solution to form a mixed solution of the high-concentration oxygen-enriched solution and a small amount of oxygen microbubbles, the mixed solution is reversely sprayed into water to be treated, the high-concentration oxygen-enriched solution is rapidly dissolved with the water, dissolved oxygen is added (the dissolved oxygen amount in the water is increased), and the small amount of oxygen microbubbles are absorbed by water flow;
(4) A water quality on-line detector (an on-line dissolved oxygen detector, an on-line dissolved oxygen measuring sensor, a dissolved oxygen probe and the like) is arranged at the downstream of water flow in raw water or a water pipeline or at the water outlet of a pool, a pond or a sewage tank, the water quality on-line detector is connected with a signal receiver, and the signal receiver is connected with the input end of a PLC controller; the output end of the PLC is connected with the control valve; the water quality online detector transmits signals to the signal receiver in real time, and the opening of the control valve is controlled after the signals received by the signal receiver are processed by the PLC so as to control the dosage of the high-concentration oxygen-enriched solution, thereby achieving the dissolved oxygen value which a user hopes to control.
Further, the inlet of the merging water pipeline is connected with the oxygen-enriched water after the water to be treated is treated by adding the oxygen-enriched solution (namely, the oxygen-enriched water treated by the oxygen-enriched solution adding system and the oxygen-enriched water treated by the oxygen-enriched solution adding process is taken as water for a water pump, namely, the merging water), namely: the water outlet of the raw water or the downstream water pipeline with water flowing to be treated is connected with the inlet of the water pump through a water mixing pipeline; or the water outlet of the pool, pond or sewage tank to be treated without water flow is connected with the water pump inlet through a fused water pipeline.
When the dissolved oxygen amount of raw water is insufficient, after the dissolved oxygen adding process is adopted to add the high-concentration oxygen-enriched solution for treatment, the dissolved oxygen amount can be stabilized at a value required by a customer, and the oxygen-enriched water, of which the dissolved oxygen amount is stabilized at the value required by the customer after the dissolved oxygen adding process is adopted to serve as water pump water, namely dissolved water. Such as: the oxygen content of raw water in sewage plant is 1PPM-4PPM, the oxygen content required by customers is 5PPM, and the oxygen-enriched water which is treated by the dissolved oxygen treatment process and is stabilized at 5PPM is used as water for a water pump. The oxygen content of the water in the farm fluctuates between 1PPM and 3PPM, the oxygen content required by customers is 10PPM, the oxygen content of the oxygen-enriched effluent treated by the dissolved oxygen casting process is 10PPM, and the oxygen-enriched effluent stabilized at 10PPM after being treated by the dissolved oxygen casting process is used as water for a water pump.
Further, the channel releasing the high concentration oxygen-enriched solution can generate a back pressure of more than 2bar and enable the supersaturated high concentration oxygen-enriched solution to be sprayed into the water to be treated at an outlet pressure of more than 2 bar.
Further, the oxygen-enriched solution adding system also comprises a liquid oxygen storage tank, an electronic vaporizer or a fin heat exchanger which are sequentially connected with the inlet of the oxygen pipeline, or a Dewar tank or a steel bottle which are connected with the inlet of the oxygen pipeline; an oxygen pipeline connected with an oxygen inlet on the top of the reaction tank is provided with a pressure regulating valve group at the outlet of the electronic vaporizer or the fin heat exchanger or at the outlet of the Dewar tank or the steel cylinder;
In the step (2), high-pressure low-temperature liquid oxygen is stored in a liquid oxygen storage tank, the liquid oxygen is released from the bottom of the liquid oxygen storage tank and is conveyed to an electronic vaporizer or a fin heat exchanger, and the electronic vaporizer or the fin heat exchanger continuously and quantitatively heats, gasifies and converts the liquid oxygen into gaseous oxygen; or oxygen is stored in a Dewar or steel cylinder, and oxygen is released from the Dewar or steel cylinder; the oxygen is regulated to a pressure of more than 2bar by a pressure regulating valve group and is delivered to the reaction tank by a pipeline.
The gasified oxygen with the pressure of more than 2bar and the pressurized dissolved water pressurized to the pressure of more than 2bar by a water pump form a gas-water mixture on the top of the reaction tank; gradually forming a saturated high-concentration oxygen-enriched solution in the reaction tank by the gas-water mixture; the saturated high-concentration oxygen-enriched solution passes through a control valve which is arranged on a high-concentration oxygen-enriched solution pipeline between the reaction tank and the diffuser and can precisely control the flow and the pressure, so that a supersaturated high-concentration oxygen-enriched solution is formed; the supersaturated high-concentration oxygen-enriched solution is reversely sprayed into the water upstream of the raw water flow or into the water in the water tank through a channel on the diffuser for releasing the high-concentration oxygen-enriched solution.
Further, in the step (3), oxygen with a pressure of more than 2bar enters the tank top of the reaction tank through an oxygen pipeline, meanwhile, dissolved water (oxygen-enriched water after being filtered to remove impurities after being processed by the oxygen-enriched solution casting process) is pressurized to more than 2bar through a water pump, and then is sent into the reaction tank from the tank top through a dissolved water pipeline in a high-pressure mist form, and the pressure in the tank is kept to be more than 2 bar.
Further, when the diffuser is arranged in raw water or a water pipeline to be treated, which flows with water, the diffuser is a hollow long cylindrical object with one closed end and one polygonal half of the cross section and the other circular arc, and a plurality of channels for releasing oxygen-enriched solution are formed on one half side wall of one polygonal side of the diffuser; the oxygen-enriched solution releasing channel is one or more rows of small holes, one or more rows of narrow slits, or a combination of one or more rows of small holes and one or more rows of narrow slits (i.e. a combination of the two kinds of small holes and narrow slits); or may be one or more small holes, one or more narrow slits, or a combination of one or more small holes and one or more narrow slits (i.e., a combination of both small holes and narrow slits); the diffuser is inserted into the raw water perpendicular to the water flow direction, and one side of the diffuser with small holes and/or narrow gaps is opposite to the upstream of the water flow, so that the oxygen-enriched solution in the diffuser can be reversely sprayed out from the small holes and/or narrow gaps to the water flow.
When the diffuser is arranged in a pool, a pond or a sewage tank which is to be treated and has no water flow, the diffuser for realizing 360-degree throwing can be designed into a hollow cylinder shape, and can be also designed into a square cylinder shape with a polygonal cross section (such as square, hexagon and the like) on the premise of ensuring back pressure.
Still further, the apertures and/or slots in each row are located on the same vertical line and are uniformly aligned.
Further, a plurality of channels for releasing the oxygen-enriched solution on the same horizontal plane are uniformly arranged with a center included angle smaller than 180 degrees; two adjacent channels for releasing the oxygen-enriched solution on the same horizontal plane are arranged at an acute central included angle so as to ensure that the oxygen-enriched solution is ejected out to be mixed with water to be treated in the water flow direction at a certain outlet pressure (more than 3 bar), and can generate a vortex reinforced mixing effect.
Further, the small holes are designed for small-diameter pipes below DN25, that is, when the high-concentration oxygen-enriched solution pipe is a small-diameter pipe below DN25, the oxygen-enriched solution releasing channel is one or more rows of small holes or a combination of one or more rows of small holes and one or more rows of narrow slits; either one or more small holes or a combination of one or more small holes and one or more narrow slits; the narrow slits are more suitable for large diameter pipelines larger than DN25, i.e. when the high concentration oxygen-enriched solution pipeline is a large diameter pipeline larger than DN25, the oxygen-enriched solution releasing channel is one or more rows of narrow slits, or a combination of one or more rows of small holes and one or more rows of narrow slits; either one or more narrow slits or a combination of one or more small holes and one or more narrow slits.
Further, the volume ratio of oxygen having a pressure of 2bar or more to dissolved water is not less than 1:10.
The working principle of the method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system is as follows: the high-pressure low-temperature liquid oxygen is stored in a liquid oxygen storage tank, the liquid oxygen comes out from the bottom of the liquid oxygen storage tank and is conveyed to an electronic carburetor or a fin heat exchanger, and the liquid oxygen is continuously and quantitatively converted into oxygen; or oxygen is stored in a dewar or steel cylinder from which oxygen is released; the pressure of the oxygen is regulated to be more than 2bar through a pressure regulating valve group; oxygen with a pressure of more than 2bar is sent into the reaction tank from the tank top through an oxygen pipeline, and air in the tank is discharged; meanwhile, the dissolved water (the oxygen-enriched water after the impurity is removed by filtration after being treated by the oxygen-enriched solution casting process) is pressurized to more than 2bar by a water pump, and then is sent into a reaction tank from the tank top in a high-pressure mist form through a dissolved water pipeline, and the pressure in the tank is kept to be more than 2 bar; in a reaction tank, mixing oxygen with pressurized dissolved water to form a gas-liquid mixture with a certain pressure; because the contact area of the water mist and the oxygen is large, and in the environment that the pressure in the tank is raised to a certain pressure, the oxygen is rapidly dissolved in the water and generates high-concentration oxygen-enriched solution; the pressure in the tank is raised to the set pressure along with the continuous feeding of oxygen or along with the continuous feeding of water mist with a certain pressure into the tank, and when the pressure in the reaction tank continuously reaches more than 2bar, the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank, the control valve seals the saturated high-concentration oxygen-enriched solution between the reaction tank and the control valve, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to continuous pressure in the reaction tank; the control valve is opened, the supersaturated high-concentration oxygen-enriched solution is conveyed to the diffuser through the valve core in the control valve, the high-concentration oxygen-enriched solution is reversely sprayed into water through a channel designed on the diffuser for releasing the high-concentration oxygen-enriched solution, namely small holes and/or narrow gaps, so that the high-concentration oxygen-enriched solution and a small amount of mixed solution of oxygen microbubbles are quickly dissolved with the water, dissolved oxygen is added (the dissolved oxygen amount in the water is increased), and the small amount of oxygen microbubbles are absorbed by water flow. The dissolved oxygen probe is arranged in water to be treated (the downstream of water flow in raw water or a water pipeline or the water outlet of a pool, a pond or a sewage tank), and transmits a dissolved oxygen signal to a signal receiver on a control valve in real time, and the signal received by the signal receiver is processed by the PLC and then controls the opening of the control valve so as to control the dosage of the high-concentration oxygen-enriched solution, thereby achieving the dissolved oxygen which a user hopes to control.
A liquid level meter with signal output is arranged outside the tank body of the reaction tank, and a liquid level signal of the high-concentration oxygen-enriched solution in the tank is used for controlling a water pump and an oxygen injection switch through a PLC processor. When the liquid level is lowered, the PLC processor controls the water pump and the oxygen injection switch to be turned on, so that high-concentration oxygen-enriched solution is generated, and the consumed high-concentration oxygen-enriched solution amount put into the water is supplemented.
The oxygen is gasified and regulated to a pressure above 2bar, the dissolved water is pressurized to a pressure above 2bar by a water pump, and the dissolved water and the water are mixed in a reaction tank and under the pressure condition, so that high-concentration oxygen-enriched solution is generated. The pressure of the system is kept to be more than 2bar, so that the saturated high-concentration oxygen-enriched solution can be further converted into the supersaturated high-concentration oxygen-enriched solution, otherwise, the oxygen utilization rate of more than 99% can be influenced. Before the outlet of the diffuser, 100% of oxygen is dissolved in water, and when the oxygen passes through small holes and narrow gaps, a small amount of oxygen overflows from the solution in the form of bubbles due to pressure drop, so that the utilization rate of the whole oxygen is more than 99%.
The solubility of oxygen is related to temperature, pressure: under the same pressure condition, the lower the temperature is, the higher the solubility is; under the same temperature condition, the higher the pressure is, the higher the solubility is; therefore, the water temperature is reduced, the pressure in the tank is increased, and the generation of dissolved oxygen can be enhanced or accelerated. According to the conditions of each use scene, such as water temperature, water pressure, water quality parameters of raw water (water to be treated), stable dissolved oxygen value expected by a user, the position of a high-concentration oxygen-enriched solution feeding point and the like, the parameters of the water pump and the consumption of oxygen can be selected.
The method of lowering water temperature and raising pressure in the tank can strengthen or accelerate the generation of oxygen-enriched solution, such as adding water cooling system … in the system, setting cooling liquid coil in the reaction tank or setting additional cooling water pipe in the middle lower part of the reaction tank.
The water is mixed with oxygen in the form of mist to increase the contact area, accelerate the mixing to generate oxygen-enriched solution, and reduce the size of the mixture of mist and mist by utilizing the principle, such as nano-scale. Therefore, the water mist nozzle at the top of the reaction tank can adopt an industrial sonic nanoscale atomizer.
The invention has the beneficial effects that:
the invention provides a method for adding high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system, which is characterized in that gas oxygen and dissolved water (oxygen-enriched water after being treated by the oxygen-enriched solution adding process and filtered to remove impurities) are sent into a reaction tank to prepare supersaturated high-concentration oxygen-enriched solution in advance, then the high-concentration oxygen-enriched solution is added into water through a diffuser, the high-concentration oxygen-enriched solution is quickly dissolved with the water, and a small amount of oxygen microbubbles are absorbed by water flow while the dissolved oxygen is increased.
Compared with the prior art, the method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system has the following advantages:
1) In the invention, gaseous oxygen with certain pressure and dissolved water with certain pressure (oxygen-enriched water after being treated by the oxygen-enriched solution casting process and filtered to remove impurities) are sent into a reaction tank to be mixed in a certain proportion in the tank, and high-concentration oxygen-enriched solution is generated under the action of the pressure in the tank; sealing the saturated high-concentration oxygen-enriched solution between the reaction tank and the control valve through the control valve, so that the saturated high-concentration oxygen-enriched solution is changed into a supersaturated high-concentration oxygen-enriched solution; and finally, reversely injecting the supersaturated high-concentration oxygen-enriched solution into water to be treated through the diffuser, wherein the high-concentration oxygen-enriched solution is quickly dissolved with the water, so that a small amount of oxygen microbubbles are absorbed by water flow while the dissolved oxygen is increased, the generation of bubbles can be greatly reduced, the oxygen utilization rate can be greatly improved, and the dissolved oxygen amount can be accurately controlled.
2) The supersaturated high-concentration oxygen-enriched solution is put into water through a diffuser, and because the pressure of the water is in a low-pressure state, in order to avoid a great deal of escape of oxygen bubbles in the mixed solution in pressure drop, the invention designs the diffuser, and the diffuser has the functions of stabilizing the pressure of a system, maintaining the back pressure of the system and injecting the high-concentration oxygen-enriched solution into raw water. The supersaturated high-concentration oxygen-enriched solution is sprayed out through the small holes of the diffuser, and the high-concentration oxygen-enriched solution is quickly dissolved with water. Because of the pressure drop, a small amount of oxygen bubbles escape from the high-concentration oxygen-enriched solution, so that the small amount of oxygen bubbles and the high-concentration oxygen-enriched solution are ejected together to generate strong vortex with water, and the fusion time is shortened. Proved by application of test cases, the gas-water mixture or the mixed solution is converted into supersaturated high-concentration oxygen-enriched solution (the concentration of dissolved oxygen reaches 5-10PPM, and the effective utilization rate of oxygen reaches more than 99 percent), the high-concentration oxygen-enriched solution and water are both liquid, and the dissolution is completed instantly, so that the dissolved oxygen amount of the water body can be accurately and stably controlled. Compared with the mode of oxygen addition, the invention does not need extra stirring equipment, has high oxygen utilization rate and greatly reduces the use cost of users.
3) In the prior art, an oxygen adding mode is used, an aeration head or a venturi static mixer is a component for projecting gas (air) into water, and the gas and the water are mixed at a constriction section or a throat pipe of a venturi nozzle and then are ejected out through an expansion section. The injection speed of the solution is increased, the pressure is rapidly reduced, a large amount of oxygen is separated out from the solution to form large bubbles, and only a small part of oxygen is dissolved with water. Oxygen bubbles escape from the water in open environments such as shallow pools, water pools and the like due to different pressures at different heights in the water; oxygen bubbles in the pipeline can collapse, cause vibration and cavitation, and affect the accuracy of the dissolved oxygen.
The main function of the diffuser in the invention is to stabilize the pressure of the whole system to be more than 2bar by using small holes and/or narrow slits, always seal oxygen in supersaturated high-concentration oxygen-enriched solution, and generate stable high-concentration oxygen-enriched solution and a small amount of oxygen bubbles when the pressure is released. A channel for releasing high-concentration oxygen-enriched solution is formed in one half of the side wall of the diffuser, and the channel for releasing high-concentration oxygen-enriched solution is one or more rows of small holes, one or more rows of narrow gaps, or two combinations of small holes and/or narrow gaps; a plurality of channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are uniformly arranged with a center included angle smaller than 180 degrees; two adjacent channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are arranged at an acute central included angle so as to ensure that the outlet pressure of the high-concentration oxygen-enriched solution is more than 2bar to be ejected and mixed with water to be treated. The inlet pressure and the outlet pressure of the pressure mixture (ideal) are identical through small holes and/or narrow slits and are injected into the water at a very fast rate. Because the pressure drops, partial oxygen can escape from the solution in the form of micro bubbles due to the pressure difference, the mixed solution of the high-concentration oxygen-enriched solution and the micro bubbles is sprayed together to be mixed with water, and meanwhile, because the small holes and/or the narrow gaps on each row are positioned on the same vertical line and are uniformly arranged, the pressure difference between the porous side and the non-porous side of the diffuser forms vortex in the water, so that the fusion is further accelerated.
In the invention, a diffuser for injecting a high-concentration oxygen-enriched solution, a narrow slit and a small hole are used in combination or independently, and the small hole or the combination of the narrow slit and the small hole is designed for a small-diameter pipeline below DN 25; the narrow gap or the combination of the narrow gap and the small hole is more suitable for large-diameter pipelines larger than DN 25; the contact surface between the solution ejected through the narrow slit and water is larger than that of the solution ejected through the small hole; depending on the use scenario, a combined design of small holes and/or narrow slits is also applied. The liquid flowing through the small holes is a process of shrinkage and re-diffusion, and the liquid is turbulent, so that great pressure loss can be generated, and more oxygen can be separated out due to the excessive small holes. In comparison to small holes, the state where the liquid passes through a narrow gap and the pressure is below 10bar is a laminar flow, where the oxygen evolution is much less than for small holes. However, in some cases, small holes and narrow gaps are combined, and a small amount of oxygen is required to be lost, so that a certain turbulence is formed, and the mixing effect with raw water is enhanced. Compared with the small holes, the narrow gap can solve the problem that the small holes deform due to cavitation and influence the solution ejection flow and pressure in the use of the system.
Compared with an aeration head, a Venturi or a Venturi static mixer in the prior art, the high-concentration oxygen-enriched solution diffuser solves the problems of low oxygen utilization rate (dissolution rate), noise, vibration, cavitation and the like; meanwhile, the application scene range of adding the high-concentration oxygen-enriched solution is wider, and the method can be applied to natural lakes, shallow channels, shallow ponds, pipelines, liquid tanks and the like.
4) The invention solves the problems that the oxygen is easy to separate out from the liquid when the gas and the water with different pressures are mixed; the pressure and time required for converting the gas-water mixture into supersaturated high concentration oxygen-enriched solution are solved by the design of the reaction tank, and the high concentration oxygen-enriched solution is kept stable in the closed pressure environment.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a high-concentration oxygen-enriched solution feeding system according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the overall structure of a high-concentration oxygen-enriched solution feeding system according to embodiment 2 of the present invention;
FIG. 3 is a schematic cross-sectional top view of a diffuser 6 of the present invention;
fig. 4 is a schematic front view of the diffuser 6 according to the present invention;
fig. 5 is a schematic side view of the diffuser 6 according to the present invention.
In the figure: 1. liquid oxygen storage tank 2, electronic carburetor 4, water pump 5, reaction tank 6, diffuser 7, dissolved oxygen probe 8, narrow slit 9, small hole 10, pressure regulating valve group 11, fusion water pipe 12, oxygen pipe 13, oxygen injection switch 14, control valve 15, high concentration oxygen-enriched solution pipe A, center angle B, center angle
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
The method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system in the embodiment comprises the following steps of:
(1) Establishing a high-concentration oxygen-enriched solution adding system; as shown in fig. 1, the high-concentration oxygen-enriched solution adding system comprises a liquid oxygen storage tank 1, an electronic carburetor 2, a reaction tank 5 and a diffuser 6 which are sequentially connected, and also comprises a water pump 4 connected with a water inlet on the top of the reaction tank 5 through a fusion water pipeline 11; an oxygen pipeline 12, the outlet of which is connected with the gas inlet on the top of the reaction tank 5, of the electronic carburetor 3 is provided with a pressure regulating valve group 10; the mixing water pipeline 11 and the oxygen pipeline 12 are respectively provided with a small section which extends into the reaction tank 5; a water mist nozzle (connected with a fused water pipeline 11) and an oxygen nozzle (connected with an oxygen pipeline 12) are arranged on the top of the inner tank of the reaction tank 5; the outlet at the bottom of the reaction tank 5 is connected with the inlet of the diffuser 6; a control valve 14 capable of precisely controlling flow and pressure is arranged on a high-concentration oxygen-enriched solution pipeline between the outlet of the bottom of the reaction tank 5 and the inlet of the diffuser 6; the diffuser 6 is arranged in a water pipeline to be treated, which is provided with water flow, is positioned at the upstream of water flow, and is inserted into the water pipeline perpendicular to the water flow direction; a plurality of channels for releasing the oxygen-enriched solution are arranged on one half of the side wall of the diffuser 6, the channels for releasing the oxygen-enriched solution can generate back pressure of more than 3bar and enable the supersaturated oxygen-enriched solution to be sprayed into water to be treated (water upstream of water flow in a reverse spraying water inlet pipeline) at an outlet pressure of more than 3bar, so that a pressure difference of more than 2bar is ensured between the outlet pressure of the diffuser and the pressure of the water to be treated; the downstream water outlet of the water pipeline with water flowing to be treated is connected with the inlet of the water pump 4 through a water mixing pipeline 11 (the oxygen-enriched solution adding system and the oxygen-enriched water after being treated by the oxygen-enriched solution adding process are used as water for the water pump 4, namely water mixing);
Oxygen gasified and heated to a pressure of 2bar or more and pressurized mixed water pressurized to a pressure of 2bar or more by the water pump 4 form a gas-water mixture at the top of the reaction tank 5; gradually forming saturated high-concentration oxygen-enriched solution in the reaction tank 5 by the gas-water mixture; the saturated high-concentration oxygen-enriched solution passes through a control valve 14 which is arranged on a high-concentration oxygen-enriched solution pipeline 15 between the reaction tank 5 and the diffuser 6 and can precisely control the flow and the pressure to form the supersaturated high-concentration oxygen-enriched solution; the supersaturated high-concentration oxygen-enriched solution is reversely sprayed into water upstream of water flow in a water inlet pipeline through a channel for releasing the high-concentration oxygen-enriched solution on the diffuser 6;
(2) Storing high-pressure low-temperature liquid oxygen in a liquid oxygen storage tank 1; the liquid oxygen is released from the bottom of the liquid oxygen storage tank 1 and is conveyed to the electronic vaporizer 2, and the electronic vaporizer 2 continuously and quantitatively gasifies the liquid oxygen to be converted into gaseous oxygen (oxygen); oxygen is conveyed to the pressure regulating valve group 10 through a pipeline to regulate the pressure to be more than 2 bar; is conveyed to the reaction tank 5 through a pipeline;
(3) Oxygen with pressure of more than 2bar enters the tank top of the reaction tank 5 through an oxygen pipeline 12 (sprayed out from an oxygen nozzle), meanwhile, dissolved water (oxygen-enriched water filtered to remove impurities after being treated by the oxygen-enriched solution casting process of the invention) is pressurized to more than 2bar through a water pump 4, and then is sent into the reaction tank 5 from the tank top (entering from a tank top water inlet and sprayed out from a water mist nozzle on the tank top) through a dissolved water pipeline 11 in a high-pressure mist form, and the pressure in the tank is kept to be more than 2 bar; the volume ratio of oxygen with the pressure of more than 2bar to oxygen-enriched water is 1:10; in the reaction tank 5, oxygen is mixed with pressurized water to form a gas-liquid mixture with a certain pressure; because the contact area of the water mist and the oxygen is large, and in a set pressure environment, the oxygen is rapidly dissolved in water and reacts to generate high-concentration oxygen-enriched solution; along with the continuous feeding of oxygen, when the pressure in the reaction tank 5 reaches more than 2bar, the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve 14 capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank 5, the control valve 14 seals the saturated high-concentration oxygen-enriched solution between the reaction tank 5 and the control valve 14, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to the continuous pressure in the reaction tank 5; the control valve 14 is opened, supersaturated high-concentration oxygen-enriched solution is conveyed to the diffuser 6 through a valve core in the control valve 14 and is reversely sprayed into water to be treated (reversely sprayed into water at the upstream of water flow in the water pipeline) through a channel which is designed on the diffuser 6 and is used for releasing the high-concentration oxygen-enriched solution, namely the small holes 9 and/or the narrow slits 8, so that the mixed solution of the high-concentration oxygen-enriched solution and a small amount of oxygen microbubbles is reversely sprayed into the water to be treated, the high-concentration oxygen-enriched solution is quickly dissolved with the water, dissolved oxygen is added (the dissolved oxygen amount in the water is increased), and meanwhile, a small amount of oxygen microbubbles are absorbed by the water flow, and meanwhile, the generation of bubbles can be greatly reduced, the oxygen utilization rate can be greatly improved and the dissolved oxygen amount can be accurately controlled.
(4) A dissolved oxygen probe 7 is arranged at the downstream of water flow in a water pipeline, the dissolved oxygen probe 7 is connected with a signal receiver, and the signal receiver is connected with the input end of a PLC controller; the output end of the PLC is connected with the control valve 14; the dissolved oxygen probe 7 transmits signals to a signal receiver in real time, and the opening of the control valve 14 is controlled after the signals received by the signal receiver are processed by the PLC so as to control the dosage of the high-concentration oxygen-enriched solution, thereby achieving the amount of the dissolved oxygen which a user hopes to control.
As shown in fig. 3-5, the diffuser 6 is a hollow long cylindrical object with one closed end and one polygonal half and one circular arc-shaped half, and a plurality of channels for releasing high-concentration oxygen-enriched solution are formed on one half side wall of one polygonal side of the diffuser 6; the channel for releasing the high-concentration oxygen-enriched solution is a combination of small holes and narrow gaps, a row of small holes 9 are arranged in the middle, and a row of narrow gaps 8 are respectively arranged at two sides; the two adjacent channels (small holes 9 and/or narrow slits 8) for releasing the high-concentration oxygen-enriched solution on the same horizontal plane are arranged at an acute central included angle (i.e. the central included angle formed by the connection line of the two adjacent channels for releasing the high-concentration oxygen-enriched solution and the central point is an acute angle, such as the two central included angles A, B in fig. 3 are acute angles), so as to ensure that the outlet pressure of the high-concentration oxygen-enriched solution is greater than 2bar and the high-concentration oxygen-enriched solution is injected and mixed with the water to be treated.
As shown in fig. 5, the diffuser 6 is arranged in the water pipe to be treated, where there is a flow of water, upstream of the flow of water; the diffuser 6 is inserted into the water pipeline perpendicular to the water flow direction, one side of the diffuser 6 provided with the small holes 9 and the narrow slits 8 is opposite to the upstream of the water flow, so that the high-concentration oxygen-enriched solution in the diffuser 6 can be reversely sprayed out from the small holes 9 and the narrow slits 8 opposite to the water flow, and the high-concentration oxygen-enriched solution is sprayed out to react with the water in a mixing way, and meanwhile, the pressure on the other side is low, so that vortex can be generated to further strengthen the mixing effect.
The small holes 9 and the narrow gaps 8 on the diffuser 6 can generate back pressure of more than 3bar and enable the high-concentration oxygen-enriched solution to be reversely sprayed out of the small holes 9 and/or the gaps 8 against water flow at an outlet pressure of more than 3bar and to be sprayed into water to be treated in the fused water pipeline, so that a pressure difference of more than 2bar is ensured between the outlet pressure of the diffuser 6 and the pressure of the water to be treated.
The working principle of the method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system in the embodiment is as follows: the high-pressure low-temperature liquid oxygen is stored in a liquid oxygen storage tank 1; the liquid oxygen comes out of the bottom of the liquid oxygen storage tank 1 and is conveyed to the electronic carburetor 2, and the liquid oxygen is continuously and quantitatively converted into oxygen; the pressure of the oxygen is regulated to be more than 2bar through the pressure regulating valve group 10; oxygen with a pressure of 2bar or more is fed into the reaction tank 5 from the tank top (ejected from an oxygen nozzle) through an oxygen pipe 12, and air in the tank is discharged; meanwhile, the dissolved water (the oxygen-enriched water after the oxygen-enriched solution is processed by the oxygen-enriched solution casting process and the impurities are removed) is pressurized to more than 2bar by a water pump 4, and then is sent into a reaction tank 5 from the tank top (sprayed out from a water mist nozzle) in a high-pressure mist form by a dissolved water pipeline 11, and the pressure in the tank is kept to be more than 2 bar; in the reaction tank 5, oxygen is mixed with the pressurized dissolved water mist to form a gas-liquid mixture with a certain pressure; because the contact area of the water mist and the oxygen is large, and in the environment that the pressure in the tank is raised to a certain pressure, the oxygen is rapidly dissolved in the water and generates high-concentration oxygen-enriched solution; along with the continuous feeding of oxygen, when the pressure in the reaction tank continuously reaches more than 2bar, the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve 14 capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank 5, the control valve 14 seals the saturated high-concentration oxygen-enriched solution between the reaction tank 5 and the control valve 14, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to the continuous pressure in the reaction tank 5; the control valve 14 is opened, the supersaturated high-concentration oxygen-enriched solution passes through the valve core in the control valve 14, the supersaturated high-concentration oxygen-enriched solution is conveyed to the diffuser 6 through a pipeline, a mixed solution of the high-concentration oxygen-enriched solution and a small amount of oxygen microbubbles is formed through a channel designed on the diffuser 6, namely the small hole 9 and/or the narrow slit 8, and is reversely sprayed into water to be treated, the high-concentration oxygen-enriched solution is rapidly dissolved with the water, and dissolved oxygen (the dissolved oxygen amount in the water is increased) is added, and meanwhile, the small amount of oxygen microbubbles are absorbed by water flow, so that the purpose of increasing the dissolved oxygen is achieved. The dissolved oxygen probe 7 is arranged at the downstream of water flow in the water pipeline and transmits a dissolved oxygen signal to a signal receiver on the control valve 14 in real time, and the signal received by the signal receiver is processed by the PLC and then controls the opening of the control valve 14 so as to control the dosage of the high-concentration oxygen-enriched solution, thereby achieving the dissolved oxygen which a user wants to control.
A liquid level meter (not labeled in the figure) with signal output is arranged outside the tank body of the reaction tank 5, and the liquid level signal of the high-concentration oxygen-enriched solution in the tank is used for controlling the water pump 4 and the switch 13 for oxygen injection through the PLC processor. When the liquid level is lowered, the PLC processor controls the water pump 4 and the oxygen injection switch 13 to be turned on, so that high-concentration oxygen-enriched solution is generated, and the high-concentration oxygen-enriched solution amount which is thrown into water and consumed by neutralization is supplemented.
The dissolved oxygen amount of the raw water and the water to be treated is unstable, and after the dissolved oxygen is added for treatment by adopting the dissolved oxygen adding process, the dissolved oxygen amount in the water can be increased, and the dissolved oxygen amount is stabilized at the dissolved oxygen amount required by a customer. The treated effluent which is treated by the dissolved oxygen adding process and is stabilized at the dissolved oxygen amount required by customers is used as water for a water pump, namely dissolution water. The amount of dissolved oxygen in the water to be treated is unstable, and after the water to be treated is treated by adding the dissolved oxygen, the amount of the dissolved oxygen is stable, and the water with the stable amount of the dissolved oxygen can reduce the adding amount of the dissolved oxygen in the next batch of water to be treated if the dissolved oxygen is contained in the water after the water to be treated is added by the dissolved oxygen. This is a process for recycling the dissolved oxygen.
Oxygen with certain pressure is mixed with the pressurized mixing water to form a gas-water mixture with pressure, and the gas-water mixture is converted into saturated high-concentration oxygen-enriched solution in the reaction tank 5; the saturated high-concentration oxygen-enriched solution is sealed between the reaction tank 5 and the control valve 14 to form supersaturated high-concentration oxygen-enriched solution; the supersaturated high-concentration oxygen-enriched solution is put into water through a diffuser 6 (shown in fig. 3-5) (the supersaturated high-concentration oxygen-enriched solution can reduce the generation of bubbles compared with the saturated high-concentration oxygen-enriched solution); since the pressure of water is low, the present invention designs this diffuser 6 (shown in fig. 3-5) in order to avoid the escape of oxygen bubbles in the mixed liquor in a large amount in the pressure drop, and the function of this diffuser 6 is to stabilize the pressure of the system, maintain the back pressure of the system and inject the high concentration oxygen-enriched solution into the raw water. The supersaturated high-concentration oxygen-enriched solution is sprayed out through the small holes of the diffuser 6, and the high-concentration oxygen-enriched solution is quickly dissolved with water. Because of the pressure drop, a small amount of oxygen bubbles escape from the high-concentration oxygen-enriched solution, so that the small amount of oxygen bubbles and the high-concentration oxygen-enriched solution are ejected together to generate strong vortex with water, the fusion speed is accelerated, and the fusion time is shortened. Proved by application of test cases, the gas-water mixture or the mixed solution is converted into supersaturated high-concentration oxygen-enriched solution (the concentration of dissolved oxygen reaches 5-10PPM, and the effective utilization rate of oxygen reaches more than 99 percent), the high-concentration oxygen-enriched solution and water are both liquid, and the dissolution is completed instantly, so that the fluctuation of the dissolved oxygen can be accurately and stably controlled. Compared with the mode of oxygen addition, the invention does not need extra stirring equipment, has high oxygen utilization rate and greatly reduces the use cost of users.
Role of the diffuser 6: in addition to injecting the high concentration oxygen-enriched solution into the water, the pressure of the whole system is maintained at the same time, so that oxygen is prevented from escaping from the high concentration oxygen-enriched solution. The back pressure of the system is kept to be more than 2bar by the small holes 9 and/or the narrow gaps 8 on the diffuser 6, the supersaturated high-concentration oxygen-enriched solution is reversely sprayed into water to be treated through the small holes 9 and/or the narrow gaps 8 on the diffuser 6, and oxygen bubbles are absorbed by water vortex flow and simultaneously can be quickly dissolved with the water, so that the purpose of controlling the dissolved oxygen amount is achieved. The back pressure of the system maintains the whole conversion process and pipeline pressure, and can prevent oxygen bubbles from escaping from the high-concentration oxygen-enriched solution due to pressure drop and prevent the high-concentration oxygen-enriched solution from returning to the air-water mixture state.
The diffuser 6 is a hollow polygonal long cylindrical object with one closed end, and is inserted perpendicular to the water flow direction, one surface of the diffuser 6 with small holes 9 and/or narrow slits 8 faces the upstream of the water flow (see fig. 4), and the opening (the non-closed end) at the top end of the diffuser 6 can allow supersaturated high-concentration oxygen-enriched solution to enter, and the supersaturated high-concentration oxygen-enriched solution is sprayed from the small holes 9 and/or the narrow slits 8 reversely against the water flow and then is mixed with the water. The process of the solution entering the water is a depressurization process, in the pressure balance process, the oxygen-enriched pressure solution and a small amount of oxygen bubbles form vortex with the upstream of the water flow and the downstream of the water flow at the moment of being sprayed through the small holes 9 and/or the narrow slits 8, the small bubbles are absorbed by the water flow, the high-concentration oxygen-enriched solution reacts with the water, and the whole process is an intensive mixing and rapid dissolving mixing process.
In summary, the invention provides a complete method for adding high-concentration oxygen-enriched solution by adopting an oxygen-enriched solution adding system, which is characterized in that supersaturated high-concentration oxygen-enriched solution is generated by the pressure action of gaseous oxygen and oxygen-enriched water in a tank, and then the supersaturated high-concentration oxygen-enriched solution is added into water through a diffuser so as to adjust the dissolved oxygen amount of the water.
In the prior art, an oxygen adding mode is used, a venturi nozzle is a component for projecting gas into water, and the gas and the water are mixed at a constriction section or a throat pipe of the venturi nozzle and then are ejected out through an expansion section. The injection speed of the solution is increased, the pressure is rapidly reduced, a large amount of oxygen is separated out from the solution to form large bubbles, and only a small part of oxygen reacts with water to generate a dissolved oxygen solution. Oxygen bubbles escape from the water in open environments such as shallow pools, water pools and the like due to different pressures at different heights in the water; oxygen bubbles in the pipeline can collapse, cause vibration and cavitation, and affect the control accuracy of the dissolved oxygen.
The main function of the diffuser 6 in the invention is to stabilize the pressure of the whole system above 2bar by using the small holes 9 and the narrow slits 8 shown in fig. 3-5, always seal oxygen in the supersaturated high concentration oxygen-enriched solution, and generate stable high concentration oxygen-enriched solution and a small amount of oxygen bubbles when the pressure is released. As shown in fig. 3-5, a channel for releasing high-concentration oxygen-enriched solution is formed on one half of the side wall of the diffuser 6, and the channel for releasing high-concentration oxygen-enriched solution is a combination of one row of small holes 9 and a plurality of rows of narrow gaps 8 (two combinations of small holes and narrow gaps); a plurality of channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are uniformly arranged with a center included angle smaller than 180 degrees; two adjacent channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are arranged at an acute central included angle so as to ensure that the outlet pressure of the high-concentration oxygen-enriched solution is more than 2bar to be ejected and mixed with water to be treated. Through the small holes 9 and the narrow slits 8, the inlet pressure and the outlet pressure (ideal state) of the pressure mixed liquid (the mixed liquid of the high-concentration oxygen-enriched solution with a certain pressure and the microbubbles) are consistent, and the mixture is sprayed into water at a very high speed. Because the pressure drops, partial oxygen can escape from the solution in the form of micro bubbles due to the pressure difference, so the mixed solution of the high-concentration oxygen-enriched solution and the micro bubbles is sprayed together to be mixed with water, and meanwhile, because the small holes 9 or the narrow gaps 8 on each row are positioned on the same vertical line and are uniformly arranged, the pressure difference exists between the side with holes and the side without holes of the diffuser 6, and the pressure mixed solution forms vortex in the water, so that the fusion is further accelerated.
Compared with the Venturi nozzle in the prior art, the high-concentration oxygen-enriched solution diffuser solves the problems of low oxygen utilization rate (dissolution rate), noise, vibration, cavitation and the like; meanwhile, the application scene range of adding the high-concentration oxygen-enriched solution is wider, and the method can be applied to natural lakes, shallow channels, shallow ponds, pipelines, liquid tanks and the like.
Example 2
The method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment is basically the same as the method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment 1; the difference is that:
the diffuser 6 is arranged in a water pool to be treated without water flow, and a plurality of channels for releasing oxygen-enriched solution are arranged on the side walls of both sides of the diffuser 6; the channel for releasing the oxygen-enriched solution is a combination of small holes and narrow gaps.
As shown in fig. 2, the diffuser 6 is arranged in a pool to be treated without water flow, and a plurality of circles of small holes and narrow slits (a row of small holes 9 and a row of narrow slits 8 are staggered) are formed on the whole cylindrical side wall of the diffuser 6, so that 360-degree throwing is realized.
The channels (small holes 9 and narrow slits 8) for releasing the oxygen-enriched solution can generate back pressure of more than 3bar and enable the supersaturated oxygen-enriched solution to be sprayed into water to be treated in the water tank at an outlet pressure of more than 3bar, so that a pressure difference of more than 2bar is ensured between the outlet pressure of the diffuser and the pressure of the water to be treated.
The water outlet of the water pool which is to be treated and has no water flowing is connected with the inlet of the water pump 4 through a water dissolving pipeline 11 (the oxygen-enriched solution adding system and the oxygen-enriched effluent treated by the oxygen-enriched solution adding process are used as water for the water pump 4).
Example 3
The method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment is basically the same as the method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment 1; the difference is that: the high-concentration oxygen-enriched solution pipeline 15 is a large-diameter pipeline larger than DN25, the channel for releasing the high-concentration oxygen-enriched solution is a narrow slit, a row of narrow slits 8 are arranged in the middle, and a row of narrow slits 8 are arranged on two sides respectively.
Example 4
The method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment is basically the same as the method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment 1; the difference is that: the electronic carburetor 2 is replaced by a fin heat exchanger; the high-concentration oxygen-enriched solution pipeline 15 is a small-diameter pipeline with DN25, the oxygen-enriched solution releasing channel is a combination of small holes and narrow gaps, a row of narrow gaps 8 are arranged in the middle, and a row of small holes 9 are respectively arranged on two sides.
Example 5
The method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment is basically the same as the method for adding the high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system in the embodiment 1; the difference is that: the liquid oxygen reservoir 1 and the electronic vaporiser 2 are not replaced by dewar or steel cylinders. Oxygen is discharged from the Dewar tank or steel bottle, and then the pressure is regulated to be more than 2bar through the pressure regulating valve group 10; oxygen with a pressure of more than 2bar is sent into the reaction tank 5 from the tank top through an oxygen pipeline 12, and air in the tank is discharged; meanwhile, the dissolved water (the oxygen-enriched water after the impurity is removed by filtration after being treated by the oxygen-enriched solution casting process) is pressurized to more than 2bar by a water pump 4, and then is sent into a reaction tank 5 from the tank top in a high-pressure mist form by a dissolved water pipeline 11, and the pressure in the tank is kept to be more than 2 bar; in the reaction tank 5, oxygen is mixed with the pressurized dissolved water mist to form a gas-liquid mixture with a certain pressure; because the contact area of the water mist and the oxygen is large, and in a set pressure environment, the oxygen is rapidly dissolved in water and reacts to generate high-concentration oxygen-enriched solution; along with the continuous feeding of oxygen, when the pressure in the reaction tank reaches more than 2bar, the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve 14 capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank 5, the control valve 14 seals the saturated high-concentration oxygen-enriched solution between the reaction tank 5 and the control valve 14, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to the continuous pressure in the reaction tank 5; opening a control valve 14, and conveying the supersaturated high-concentration oxygen-enriched solution to the diffuser 6 through a pipeline by passing the supersaturated high-concentration oxygen-enriched solution through a valve core in the control valve 14; the supersaturated high-concentration oxygen-enriched solution is reversely sprayed into water through small holes and/or narrow slits in the diffuser 6 to form a mixed solution of the high-concentration oxygen-enriched solution and a small amount of oxygen microbubbles, and the high-concentration oxygen-enriched solution is quickly dissolved with the water, and the small amount of oxygen microbubbles are absorbed by water flow.
Claims (6)
1. The method for adding the high-concentration oxygen-enriched solution by adopting the oxygen-enriched solution adding system is characterized by comprising the following steps of:
(1) Establishing an oxygen-enriched solution adding system; the oxygen-enriched solution adding system comprises a reaction tank, a diffuser, an oxygen pipeline and a fusion water pipeline; a water mist nozzle and an oxygen nozzle are arranged on the top of the inner tank of the reaction tank; a water pump is arranged on the mixing water pipeline; the outlet of the water pump is connected with a water inlet and a water mist nozzle at the top of the reaction tank through a fused water pipeline; the oxygen pipeline is provided with a pressure regulating valve group; the outlet of the pressure regulating valve group is connected with an oxygen inlet and an oxygen nozzle at the top of the reaction tank through an oxygen pipeline; the outlet at the bottom of the reaction tank is connected with the inlet of the diffuser through an oxygen-enriched solution pipeline; a control valve or a restriction orifice plate or an orifice capable of precisely controlling flow and pressure is arranged on an oxygen-enriched solution pipeline between an outlet at the bottom of the reaction tank and an inlet of the diffuser; the diffuser is arranged in the water to be treated; the diffuser is a hollow cylindrical object with one end open and the other end closed; a channel for releasing the oxygen-enriched solution is formed on the cylindrical side wall of the diffuser; the channel for releasing the oxygen-enriched solution is a combination of a small hole and a narrow gap; the channel for releasing the oxygen-enriched solution can generate certain back pressure and enable the supersaturated oxygen-enriched solution to be sprayed into water to be treated at certain outlet pressure, so that a pressure difference of more than 2bar exists between the outlet pressure of the diffuser and the pressure of the water to be treated; the oxygen-enriched solution is a high-concentration oxygen-enriched solution or a high-concentration dissolved oxygen solution; the channel for releasing the oxygen-enriched solution can generate back pressure of more than 3bar and enable the supersaturated oxygen-enriched solution to be sprayed into water to be treated at an outlet pressure of more than 3bar; the back pressure of the diffuser is more than 3bar, and the pressure of the whole system is maintained to be more than 3bar;
the diffuser is arranged in the raw water or water pipeline to be treated, which has water flowing, and is positioned at the upstream of the water flow; the diffuser is a hollow long cylindrical object with one closed end and one polygonal half of the cross section and the other circular arc, and a plurality of channels for releasing high-concentration oxygen-enriched solution are arranged on one half side wall of one polygonal side of the diffuser; the channel for releasing the high-concentration oxygen-enriched solution is a combination of one or more rows of small holes and one or more rows of narrow gaps; the diffuser is inserted into the raw water perpendicular to the water flow direction, one side of the diffuser with the combination of small holes and narrow gaps is opposite to the upstream of the water flow, so that the high-concentration oxygen-enriched solution in the diffuser can be reversely sprayed out from the combination of the small holes and the narrow gaps to the water flow;
The small holes or the narrow slits on each row are positioned on the same vertical line and are uniformly arranged;
A plurality of channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are uniformly arranged with a center included angle smaller than 180 degrees; two adjacent channels for releasing high-concentration oxygen-enriched solution on the same horizontal plane are arranged at an acute central included angle;
the state when the liquid passes through the narrow gap and the pressure is lower than 10bar is laminar flow, and the carbon dioxide is precipitated relatively little in the state;
(2) The oxygen is regulated to a certain pressure by a pressure regulating valve group and is conveyed to a reaction tank by a pipeline;
(3) Oxygen with certain pressure enters the tank top of the reaction tank through an oxygen pipeline, meanwhile, dissolved water is pressurized to certain pressure through a water pump, is sent into the reaction tank from the tank top through a dissolved water pipeline in a high-pressure mist form, and keeps the pressure in the tank at certain pressure; in a reaction tank, mixing oxygen with pressurized dissolved water to form a gas-liquid mixture with a certain pressure; the contact area of the water mist and the oxygen is large, the pressure in the tank is raised to a certain pressure, and the oxygen is rapidly dissolved in the water to generate a high-concentration oxygen-enriched solution; the pressure in the tank is continuously increased along with the continuous feeding of oxygen or along with the continuous feeding of water mist with certain pressure into the tank, and when the pressure in the reaction tank reaches certain pressure, the high-concentration oxygen-enriched solution in the tank is converted into saturated high-concentration oxygen-enriched solution; the saturated high-concentration oxygen-enriched solution is conveyed to a control valve capable of precisely controlling flow and pressure through a pipeline at the bottom of the reaction tank, the control valve seals the saturated high-concentration oxygen-enriched solution between the reaction tank and the control valve, and the saturated high-concentration oxygen-enriched solution becomes supersaturated high-concentration oxygen-enriched solution due to continuous pressure in the reaction tank; the control valve is opened, supersaturated high-concentration oxygen-enriched solution is conveyed to the diffuser through a valve core in the control valve and a pipeline, a mixed solution of the high-concentration oxygen-enriched solution and a small amount of oxygen microbubbles is reversely sprayed into water to be treated through a channel designed on the diffuser for releasing the high-concentration oxygen-enriched solution, namely, a small hole and a narrow gap, the high-concentration oxygen-enriched solution is quickly dissolved with the water, and the small amount of oxygen microbubbles are absorbed by water flow;
(4) The downstream of the water flow in the raw water pipeline is provided with a water quality on-line detector which is connected with a signal receiver, and the signal receiver is connected with the input end of the PLC; the output end of the PLC is connected with the control valve; the water quality online detector transmits signals to the signal receiver in real time, and the opening size of the control valve is controlled after the signals received by the signal receiver are processed by the PLC so as to control the feeding amount of the high-concentration oxygen-enriched solution.
2. The method for adding high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system according to claim 1, wherein the inlet of the merging water pipeline is connected with the oxygen-enriched water after the water to be treated is added with the oxygen-enriched solution.
3. The method for adding a high-concentration oxygen-enriched solution by using an oxygen-enriched solution adding system according to claim 1 or 2, wherein the oxygen-enriched solution adding system further comprises a liquid oxygen storage tank, an electronic vaporizer or a fin heat exchanger which are sequentially connected with an inlet of an oxygen pipeline, or further comprises a dewar tank or a steel cylinder which are connected with the inlet of the oxygen pipeline; an oxygen pipeline connected with an oxygen inlet on the top of the reaction tank is provided with a pressure regulating valve group at the outlet of the electronic vaporizer or the fin heat exchanger or at the outlet of the Dewar tank or the steel cylinder;
in the step (2), high-pressure low-temperature liquid oxygen is stored in a liquid oxygen storage tank, the liquid oxygen is released from the bottom of the liquid oxygen storage tank and is conveyed to an electronic vaporizer or a fin heat exchanger, and the electronic vaporizer or the fin heat exchanger continuously and quantitatively heats, gasifies and converts the liquid oxygen into gaseous oxygen; or oxygen is stored in a Dewar or steel cylinder, and oxygen is released from the Dewar or steel cylinder; the oxygen is regulated to a pressure of more than 2bar by a pressure regulating valve group and is delivered to the reaction tank by a pipeline.
4. The method for adding a high-concentration oxygen-enriched solution using an oxygen-enriched solution adding system according to claim 1 or 2, wherein in the step (3), oxygen having a pressure of 2bar or more is introduced into the top of the reaction tank through the oxygen pipe, and at the same time, the dissolved water is pressurized to 2bar or more by the water pump, and then is fed into the reaction tank from the top of the tank through the dissolved water pipe as a high-pressure mist, and the pressure in the tank is maintained at 2bar or more.
5. The method for adding a high-concentration oxygen-enriched solution by using an oxygen-enriched solution adding system according to claim 1 or2, wherein the water quality online detector is an online dissolved oxygen measuring sensor or an online dissolved oxygen detector; the volume ratio of oxygen with a pressure above 2bar to dissolved water is not lower than 1:10.
6. The method for adding high-concentration oxygen-enriched solution by using the oxygen-enriched solution adding system according to claim 1 or2, wherein a cooling liquid coil is arranged in the reaction tank, or a supplementary cooling water pipe for supplementing cooling water is arranged at the middle lower part of the reaction tank; the water mist nozzle at the top of the reaction tank is an industrial sonic nanoscale atomizer.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980927A (en) * | 2019-08-23 | 2020-04-10 | 广州中国科学院先进技术研究所 | Black and odorous river regulation device and process based on bubble-free oxygenation technology |
| CN111807494A (en) * | 2020-07-22 | 2020-10-23 | 上海城市水资源开发利用国家工程中心有限公司 | Diffuser for adjusting pH value by using carbon dioxide and adjusting method thereof |
| CN216703982U (en) * | 2021-10-14 | 2022-06-10 | 哈维(上海)环境科技有限公司 | Oxygen-enriched solution adding system |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0900761B1 (en) * | 1997-09-04 | 2003-11-12 | Kramer & Co. OEG | Method for preparing and filling of oxygen-enriched or oxygen containing gas enriched liquids and beverage prepared by such a method |
| CA2303554C (en) * | 1997-09-15 | 2008-07-29 | Den Norske Stats Oljeselskap A.S. | Separation of acid gas from natural gas |
| US20120228396A1 (en) * | 2004-05-25 | 2012-09-13 | Gregory Scott Osborn | System and Method for Optimizing the Dissolution of a Gas in a Liquid |
| JP4018130B1 (en) * | 2006-10-17 | 2007-12-05 | 東フロコーポレーション株式会社 | Water treatment system |
| DE102008012725A1 (en) * | 2008-03-05 | 2009-09-24 | United Waters International Ag | Apparatus for fumigation of liquids |
| CN101602550A (en) * | 2009-07-17 | 2009-12-16 | 同济大学 | Submersible non-bubble high-efficiency oxygenated water restoration system |
| JP2013173118A (en) * | 2012-02-27 | 2013-09-05 | Shibaura Mechatronics Corp | Device and method for generating micro bubble and device and method for processing substrate |
| CN105327628B (en) * | 2015-11-27 | 2017-08-25 | 北京航天动力研究所 | A kind of low flow resistance eddy flow diffusion air and liquid mixer |
| TW201834735A (en) * | 2017-03-21 | 2018-10-01 | 大陸商昆山納諾新材料科技有限公司 | Waste gas treatment method via application of nano-bubble and waste gas treatment system using the same |
| EP3687672A4 (en) * | 2017-09-29 | 2022-02-23 | Aquatec Maxcon Pty Ltd | Diffuser for aeration of a fluid |
| CN110813095B (en) * | 2019-10-11 | 2025-02-11 | 浙江华晨环保有限公司 | Immersed membrane treatment equipment |
-
2021
- 2021-10-14 CN CN202111196838.9A patent/CN113856505B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980927A (en) * | 2019-08-23 | 2020-04-10 | 广州中国科学院先进技术研究所 | Black and odorous river regulation device and process based on bubble-free oxygenation technology |
| CN111807494A (en) * | 2020-07-22 | 2020-10-23 | 上海城市水资源开发利用国家工程中心有限公司 | Diffuser for adjusting pH value by using carbon dioxide and adjusting method thereof |
| CN216703982U (en) * | 2021-10-14 | 2022-06-10 | 哈维(上海)环境科技有限公司 | Oxygen-enriched solution adding system |
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