CN113968614B - Multistage cooperative self-circulation anaerobic ammonia oxidation reaction device - Google Patents
Multistage cooperative self-circulation anaerobic ammonia oxidation reaction device Download PDFInfo
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- CN113968614B CN113968614B CN202110711295.3A CN202110711295A CN113968614B CN 113968614 B CN113968614 B CN 113968614B CN 202110711295 A CN202110711295 A CN 202110711295A CN 113968614 B CN113968614 B CN 113968614B
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 54
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 214
- 238000000926 separation method Methods 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 43
- 238000005273 aeration Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims description 39
- 238000002156 mixing Methods 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 26
- 238000011084 recovery Methods 0.000 claims description 18
- 230000007704 transition Effects 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 241001453382 Nitrosomonadales Species 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 19
- 230000001174 ascending effect Effects 0.000 description 14
- 238000005265 energy consumption Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
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Classifications
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- 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
- C02F3/28—Anaerobic digestion processes
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention relates to the technical field of sewage treatment devices, and provides a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, which comprises: the main body is provided with an inlet and an outlet, a main reaction zone is arranged in the main body, and a gas-liquid separation zone is arranged above the main reaction zone; the water body accelerating device is connected with the inlet and at least one part of the inner diameter of the water body accelerating device is reduced along the flowing direction of the water body; the water inlet end of the upward guide pipe is arranged corresponding to the water outlet end of the water body accelerating device, and one end of the upward guide pipe corresponding to the water body accelerating device is provided with a first notch; the aeration device is arranged in the main reaction zone; the water inlet end of the gas-liquid separation zone is communicated with the main reaction zone, and the water outlet end of the gas-liquid separation zone is communicated with the outlet. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device has more uniform water distribution, is beneficial to the growth of anaerobic ammonia oxidizing bacteria and improves the water purification efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment devices, in particular to a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device.
Background
Anaerobic ammonia oxidation technology is a biological denitrification process in the current shortcut and is praised as the most promising sewage denitrification process. Anaerobic ammoxidation is under anoxic conditions with Nitrite (NO) 2 - ) Ammonia (NH) is used as electron acceptor 4 + ) Conversion to Nitrogen (N) 2 ) At the same time, CO is immobilized with nitrite as electron donor 2 And produce Nitrate (NO) 3 - ) Is a biological process of (a).
When the reactor distributes water, branch pipe type point-to-point water distribution is usually adopted, namely, the water distribution is carried out through a main pipe connected with an external pump body and a plurality of branch pipes connected with the main pipe, wherein water passing holes are formed in the pipe wall of each branch pipe, however, the water distribution mode can cause that the water passing holes on the branch pipes are easy to block, uneven water distribution is caused, the phenomenon of local absolute anaerobic easily occurs in the reactor, the growth of anaerobic ammonia bacteria is not facilitated, even the anaerobic ammonia bacteria are disabled, and the water purification efficiency is reduced; in addition, the water distribution mode causes great water loss, the pump body lift is higher, and the energy consumption is great.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of uneven water distribution, large water loss, higher pump lift and large energy consumption caused by easy blockage of water passing holes on a water distribution pipe due to the adoption of branch pipe type point-to-point water distribution in the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device in the prior art.
To this end, the invention provides a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, comprising: the main body is provided with an inlet and an outlet, a main reaction zone is arranged in the main body, and a gas-liquid separation zone is arranged above the main reaction zone; the water body accelerating device is connected with the inlet, and at least one part of the inner diameter of the water body accelerating device is reduced along the flowing direction of the water body; the main reaction zone is formed between the uplink guide pipe and the main body, the water inlet end of the uplink guide pipe is arranged corresponding to the water outlet end of the water body accelerating device, and a first notch is formed at one end of the uplink guide pipe corresponding to the water body accelerating device; the aeration device is arranged in the main reaction zone and is suitable for providing oxygen for microorganisms in the main reaction zone; the water inlet end of the gas-liquid separation zone is communicated with the main reaction zone, and the water outlet end of the gas-liquid separation zone is communicated with the outlet.
Further, the water body accelerating device includes: a water jet; the water injector is communicated with the inlet, and at least one part of the water injector is arranged in a conical shape along the flowing direction of the water body; the upward guide pipe cover is buckled above the water injector, and a first notch is formed between the upward guide pipe and the water injector.
Further, the water body accelerating device also comprises at least one accelerating spray pipe; at least one part of the accelerating spray pipe is arranged in a conical shape along the flowing direction of the water body; the uplink guide pipe cover is buckled above the accelerating spray pipe, and the first notch is formed between the uplink guide pipe and the accelerating spray pipe; the accelerating spray pipe cover is buckled above the water injector.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises: a hydraulic mixing drum; the cover is buckled outside the uplink guide pipe and is positioned in front of the water flow path in the hydraulic mixing cylinder, and a second gap is formed between the hydraulic mixing cylinder and the uplink guide pipe; a hydraulic main mixing area is formed in the area between the hydraulic mixing cylinder and the uplink guide pipe; the main reaction zone is formed in the area between the hydraulic mixing cylinder and the main body, and the hydraulic main mixing zone is communicated with the main reaction zone through the second notch.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a gas-liquid separation chamber plate, a gas-liquid separation zone is formed between the gas-liquid separation chamber plate and the main body, the bottom of the gas-liquid separation chamber plate extends and inclines to the direction close to the side wall of the main body, and a first gap is reserved between the bottom of the gas-liquid separation chamber plate and the main body.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a gas-lifting guide plate, wherein the gas-lifting guide plate is arranged on the inner side of the gas-liquid separation chamber plate, the top end of the gas-lifting guide plate extends towards the direction away from the water body accelerating device, and a transition area is formed between the gas-lifting guide plate and the gas-liquid separation chamber plate; the bottom of the gas lifting guide plate is connected with the water injector, and the main reaction zone is formed in the area between the gas lifting guide plate and the hydraulic mixing cylinder; the region between the air lifting guide plate and the main body forms a first floc recovery channel.
Further, the outer side wall of the air lifting guide plate is provided with a plurality of water passing holes, and the water passing holes are positioned at the edge of the top opening of the air lifting guide plate.
Further, the inner side wall of the gas lifting guide plate is provided with a plurality of sludge reflecting plates, and one ends of the sludge reflecting plates extend towards the inside of the gas lifting guide plate.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises a three-phase separator, wherein the three-phase separator is arranged in the gas-liquid separation zone, a water collecting zone is formed in a region between the three-phase separator and the top of the main body, and a floc filtering layer zone is formed in a region between the three-phase separator and the bottom of the gas-liquid separation chamber plate; the three-phase separator is provided with a separation air pipe towards one side of the top of the main body, the air inlet end of the separation air pipe is connected with the air outlet end of the three-phase separator, and the air outlet end of the separation air pipe extends to the transition zone.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device also comprises a plurality of inner return pipes, wherein the water inlet ends of the inner return pipes are communicated with the floc filtering layer area, and the water outlet ends of the inner return pipes are communicated with the water inlet ends of the accelerating spray pipes; the pipe wall of the water inlet end of the inner return pipe is provided with a plurality of water inlet holes.
Further, a hydraulic guide plate is arranged in the floc filtering layer area, a second floc recovery channel is formed between the hydraulic guide plate and the inner side wall of the main body, and the second floc recovery channel is communicated with the first floc recovery channel; a second gap is reserved between the hydraulic guide plate and the gas-liquid separation chamber plate; and a third gap is reserved between the hydraulic guide plate and the air lifting guide plate.
Further, the inside wall of main part is provided with the water collecting plate, the water collecting plate is located in the gas-liquid separation district, the water collecting plate with the region between the main part forms the water collecting region, the water collecting region with the export is linked together.
Further, the aeration device comprises a plurality of aeration pipes, the air outlet ends of the aeration pipes are provided with a plurality of aeration heads, and the air inlet ends of the aeration pipes are communicated with an external air source.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a sludge return pipe, one end of the sludge return pipe is communicated with the water injector, and the other end of the sludge return pipe is communicated with the bottom of the main body.
Further, the water outlet end of the uplink guide pipe is in a diffusion shape along the flowing direction of the water body.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises a sludge discharge pipe, wherein the inlet end of the sludge discharge pipe is communicated with the bottom of the main reaction zone, the outlet end of the sludge discharge pipe extends out of the main body, and the outlet end of the sludge discharge pipe is suitable for being connected with sludge storage equipment.
Further, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further comprises an evacuation pipe, the bottom of the main body is communicated with the outside of the main body, and an inlet of the evacuation pipe is positioned at the lowest position of the bottom of the main body.
Further, an exhaust device is arranged on the main body.
Further, the bottom of the main body is in a conical structure.
The technical scheme of the invention has the following advantages:
1. the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that the water body accelerating device and the upward guide pipe are arranged in the main body, the water body accelerating device is utilized to accelerate the water body flowing into the main body, the water body is introduced into the main body for mixing with stirring under the injection of the upward guide pipe, compared with the branch pipe type point-to-point water distribution mode in the prior art, a plurality of branch pipes and water holes are not required to be arranged on the branch pipes, the phenomenon of blocking the water holes is avoided, the water distribution is more uniform, the phenomenon of local absolute anaerobic is not easy to occur in the reactor, the growth of anaerobic ammonia bacteria is facilitated, and the water purification efficiency is improved. In addition, the water loss can be reduced, the pump head of the pump body is reduced, and the energy consumption is reduced.
2. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention mixes water bodies in the cooperative hydraulic main mixing zone, the anaerobic fluidized bed zone, the transition zone and the gas-liquid separation zone after the water bodies enter the main body. Diluting raw water and having biological selection function. The impact load of the vertical anaerobic reactor is improved. The ascending flow rate is increased by cooperating with a plurality of water strands, so that the energy consumption of the pump body is reduced.
3. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention, the air-lift lifting guide plate is arranged in the main body, and the air-lift principle is utilized to drive the water body to lift, so that the energy consumption is saved.
4. According to the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention, the multistage cooperative drive multi-region water upward flows, so that the upward flow speed is improved, the microbial strain is in a suspended state, and the full reaction of the granular thalli and pollutants in water is facilitated.
5. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages of a nitrosation and anaerobic ammonia oxidation co-reactor, compact structure and small occupied area. And avoid nitrosation overreaction, which affects the composition of ammoxidation matrix.
6. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that jet water distribution is realized, blockage is not easy, and the hydraulic mixing is uniform and no dead angle exists.
7. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that the bottom of the main body is of an inverted cone structure, and calcified and inorganic sludge can be discharged at any time.
8. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided by the invention has the advantages that the inner reflux pipe is arranged in the transition zone, the forced inner reflux is realized through the water jet device, external power is not needed, and the energy consumption is reduced; and the nitrite produced by aeration can be returned to the main reaction zone by the inner return pipe, thereby being beneficial to the completion of anaerobic ammonia oxidation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a part of the structure of FIG. 1;
FIG. 3 is a schematic view of a further partial structure of FIG. 1;
FIG. 4 is a top view of the three-phase separator of FIG. 1;
fig. 5 is a top view of the aeration device of fig. 1.
Reference numerals illustrate:
1-a main body; 2-water jet; 3-accelerating the spray pipe;
4-an uplink guide tube; 5-a hydraulic mixing drum; 6-lifting the lifting guide plate;
7-a gas-liquid separation chamber plate; 8-three-phase separator; 9-a gas-liquid separation zone;
10-a water collection sheet; 11-separating the air tube; 12-a floc filtering layer area;
13-transition zone; 14-a main reaction zone; 15-inlet;
16-outlet; 17-a mud pipe; 18-emptying the pipe;
19-a hydraulic main mixing zone; 20-a first notch; 21-a second gap;
22-a first floc recovery channel; 23-a second floc recovery channel;
24-a first gap; 25-a second gap; 26-a third gap;
27-a dosing tube; 28-hydraulic guide plate; 29-a sludge reflecting plate;
30-a water collecting area; 31-manhole; 32-an inner return pipe;
33-a sludge return pipe; 34-aeration tube; 35-an aeration head.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
FIG. 1 is a schematic structural diagram of a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device provided in an embodiment of the present invention; as shown in FIG. 1, the present embodiment provides a multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, wherein the anaerobic ammonia oxidation process uses NH as a microorganism under anaerobic conditions 4 + As electron donor, with NO 2 - For electron acceptors, NH 4 + Or NO 2 - Directly change into N 2 Thereby realizing the simultaneous removal of two nitrogen pollutants.
In this embodiment, the main body 1 is a vertical column-shaped tank body, and the shape of the main body 1 is not limited, and preferably, as shown in fig. 1, the bottom of the tank body is in a conical structure, so that the water storage operation in the tank body can be conveniently performed by the above arrangement mode. An inlet 15 is arranged at the position of the main body 1 close to the bottom and is used for water inflow; an outlet 16 is provided in the body 1 near the top, and the purified water flows out from the outlet 16.
The inside of main part 1 is provided with water ejector 2, and the water inlet of water ejector 2 is linked together with the entry 15 of main part 1, and the top delivery port cover of water ejector 2 is equipped with acceleration spray tube 3, and the top delivery port cover of acceleration spray tube 3 is equipped with ascending stand pipe 4, and the top play water mask of ascending stand pipe 4 is detained and is had water conservancy mixing drum 5. The inside of main part 1 is provided with air lift and rises baffle 6, and whole air lift rises baffle 6 and is located the periphery of water conservancy mixing drum 5, and air lift rises the bottom of baffle 6 and can be connected with the lateral wall seal of water ejector 2, and air lift rises the top of baffle 6 and is open structure.
FIG. 2 is a schematic view of a part of the structure of FIG. 1; as shown in fig. 2, in this embodiment, a first gap 20 is left between the accelerating nozzle 3 and the ascending guide pipe 4, the first gap 20 is disposed at the bottom of the ascending guide pipe 4, and a second gap 21 is left between the bottom of the hydraulic mixing cylinder 5 and the air-lift ascending guide plate 6. The region between the up-flow guide tube 4 and the hydro-mixing drum 5 forms a hydro-main mixing zone 19, and the region between the hydro-mixing drum 5 and the gas-lift up-guide 6 forms a main reaction zone 14. After being sprayed into the accelerating spray pipe 3 by the water sprayer 2, the water is accelerated, enters the ascending guide pipe 4 and is sprayed out from the top of the ascending guide pipe 4, after striking the top of the hydraulic mixing drum 5, the water is scattered all around, and part of the water is returned to the inside of the ascending guide pipe 4 again by the first notch 20, and is mixed with the ascending water and then is stirred again. The other part of water flows into the main reaction zone 14 from the hydraulic main mixing zone 19 through the second notch 21, is influenced by the air stripping action, and flows out from the top opening of the air stripping lifting guide plate 6.
The multistage cooperation self-circulation anaerobic ammonia oxidation reaction device that this embodiment provided is provided with water accelerating device and ascending guide pipe 4 in this main part 1, utilize water accelerating device to accelerate the water that flows into main part 1, and introduce main part 1 internal reference and stirring mix with the water under the injection of ascending guide pipe 4, compare with the branch pipe point-to-point water distribution mode among the prior art, need not to set up a plurality of branch pipes and set up the water hole on the branch pipe, avoid the phenomenon that the water hole is blockked up, thereby make the water distribution more even, the inside phenomenon of local absolute anaerobism that is difficult to appear of reactor is favorable to the growth of anaerobic ammonia oxygen fungus, improve water purification efficiency. In addition, the water loss can be reduced, the pump head of the pump body is reduced, and the energy consumption is reduced.
In this embodiment, the caliber of the upper part of the gas lifting rising guide plate 6 is smaller than that of the lower part, so that the gas generated in the main reaction zone 14 is subjected to gas lifting, and the formation of particle flocs is facilitated.
In this embodiment, a multi-stage sludge reflecting plate 29 may be disposed on the inner wall of the air-lift lifting guide plate 6, and the sludge reflecting plates 29 are inclined downward, so that when the water flows upward, the water hits the sludge reflecting plates 29, and larger flocs are scattered into smaller flocs.
Specifically, as shown in fig. 1, the reflecting plates 29 are oppositely disposed on the opposite side walls of the air-lift guide plate 6, and a plurality of reflecting plates 29 are alternately disposed with each other in the height direction, so that a plurality of vortices are formed inside the air-lift guide plate 6 by the above-described arrangement, thereby effectively improving the dispersion effect of large-volume flocs inside the air-lift guide plate 6.
In this embodiment, a plurality of water holes are formed in the outer wall, close to the top opening of the air lifting guide plate 6, of the air lifting guide plate, one part of water flows out from the opening of the air lifting guide plate, the other part of water flows out from the water holes, and after the two parts of water strike, the stirring effect is improved.
Fig. 5 is a top view of the aeration device of fig. 1. As shown in FIG. 5, in this embodiment, aeration pipes 34 are provided in the main reaction zone 14, the distribution of the aeration pipes 34 may be designed according to the need, and a plurality of aeration heads 35 are provided on the walls of the aeration pipes 34. Aeration tube 34 is in communication with an external gas source to provide oxygen necessary for the reaction of the microorganisms within the body.
FIG. 3 is a schematic view of a further partial structure of FIG. 1; as shown in fig. 3, in this embodiment, a gas-liquid separation chamber plate 7 is further disposed inside the main body 1, and the gas-liquid separation chamber plate 7 is located at the periphery of the gas lifting guide plate 6 with a certain gap therebetween to form a transition zone 13. The bottom of the gas-liquid separation chamber plate 7 extends toward the inner wall of the main body 1, and is not in contact with the gas-liquid separation chamber plate, and the region between the gas-liquid separation chamber plate and the main body is a first gap 24. Wherein the top of the gas-liquid separation chamber plate 7 may be higher than the top of the gas-lift ascending guide plate 6, preventing water flowing out through the gas-lift ascending guide plate 6 from directly entering the water collection area 30.
FIG. 4 is a top view of the three-phase separator of FIG. 1; as shown in fig. 4, the region formed between the outer side wall of the gas-liquid separation chamber plate 7 and the inner side wall of the main body 1 is a gas-liquid separation region 9, and a three-phase separator 8 is provided in the gas-liquid separation region 9. The top of the three-phase separator 8 pair is provided with a separating air pipe 11 for exhausting gas, and the air outlet end of the separating air pipe 11 extends into the transition zone 13, and the water body formed by the gas condensation in the separating air pipe 11 can flow into the transition zone 13.
In this embodiment, a hydraulic guide plate 28 is disposed below the three-phase separator 8, a second gap 25 is left between the hydraulic guide plate 28 and the gas-liquid separation chamber plate 7, and a third gap 26 is left between the end of the hydraulic guide plate 28 and the gas-lift lifting guide plate 6. The water flowing out of the opening of the air-lift lifting guide plate 6 flows into the transition zone 13, the water flowing out of the transition zone 13 hits the hydraulic guide plate 28 and upwards through the first gap 24, and the flocs in the water are gathered below the three-phase separator 8 to form a floc filtering layer zone 12. A part of the water body passes through the floc filtering layer area 12 and enters the three-phase separator 8, the three-phase separator 8 separates and discharges the gas carried in the water body, and the water body enters the water collecting area 30 upwards.
In this embodiment, a circle of water collecting plate 10 may be disposed on the inner wall of the main body 1 along the inner wall of the main body 1, and the area formed between the water collecting plate 10 and the main body 1 is a water collecting area 30, so that the water body that is continuously increased flows through the water collecting plate 10, enters the water collecting area 30, and then flows out from the outlet 16 that is communicated with the water collecting area 30.
A first floc recovery channel 22 is formed between the air-lift lifting guide plate 6 and the inner wall of the main body 1, a second floc recovery channel 23 is formed between the hydraulic guide plate 28 and the inner wall of the main body 1, the first floc recovery channel 22 is communicated with the second floc recovery channel 23, and the other part of water flowing out through the transition zone 13 flows to the bottom of the main body 1 through the second floc recovery channel 23 and the first floc recovery channel 22 in sequence.
In this embodiment, a portion of the water flowing from the transition zone 13 carries the water downwards through the second gap 25 to the bottom of the main body 1.
In this embodiment, an inner return pipe 32 is further disposed in the main body 1, one end of the inner return pipe 32 is located in the gas-liquid separation area 9, the other end of the inner return pipe is downwardly communicated with the accelerating nozzle 3, and a part of water in the gas-liquid separation area 9 is re-participated in the stirring process through the inner return pipe 32. Wherein, the inner return pipe 32 is provided with a plurality of water inlets on the pipe wall of the gas-liquid separation zone 9 for water inflow.
In this embodiment, the bottom of the main body 1 is provided with a sludge return pipe 33, one end of the sludge return pipe 33 can be communicated with the water injector 2, the other end extends to the bottom of the main body 1, and the water body and the flocs at the bottom of the main body 1 can be stirred again through the sludge return pipe 33.
In this embodiment, the accelerating nozzle 3 may be sleeved with a plurality of nozzles.
In this embodiment, the water outlet end of the uplink guide pipe 4 is in a diffusion shape along the flow direction of the water body.
In this embodiment, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further includes a sludge discharge pipe 17, an inlet 15 end of the sludge discharge pipe 17 is communicated with the bottom of the main reaction zone 14, an outlet 16 end of the sludge discharge pipe 17 extends out of the main body 1, and an outlet 16 end of the sludge discharge pipe 17 is suitable for being connected with a sludge storage device.
In this embodiment, the multistage cooperative self-circulation anaerobic ammonia oxidation reaction device further includes an evacuation pipe 18, the bottom of the main body 1 is communicated with the outside of the main body 1, and the inlet 15 of the evacuation pipe 18 is located at the lowest position of the bottom of the main body 1.
In this embodiment, the main body 1 is provided with an exhaust device for exhausting the gas of the main body 1.
In this embodiment, the top of the main body 1 is further provided with a manhole 31, which is convenient for maintenance personnel to enter the main body 1.
In this embodiment, the water injector 2 is connected to the chemical feeding pipe 27, and an alkalinity or an inorganic carbon source can be added into the main body 1 to provide a substrate for anammox bacteria.
When in use, raw water enters the main body 1 from the inlet 15, water after chemical addition is sprayed out by the water sprayer 2, and low pressure generated by jet flow drives quasi-water in the gas-liquid separation zone 9, water in the main reaction zone 14 and water mixture at the bottom of the main body 1 to be mixed and reacted in the hydraulic main mixing zone 19. The hydraulic mixing drum 5 has the functions of distinguishing the hydraulic main mixing area 19 from the main reaction area 14, avoiding raw water from directly entering the main reaction area 14, and uniformly releasing water distribution from the bottom to the periphery to form an upward flow. The anaerobic ammonia oxidation granular sludge is in a dynamic suspension state, which is beneficial to the contact reaction of pollutants in water and microorganisms.
The center of the upper part of the air lifting guide plate 6 is of a cylinder structure, and sludge reflecting plates 29 are distributed at intervals along the circumferential direction of the inner wall of the cylinder and are used for keeping the concentration of granular sludge in the main reaction zone 14, and on the other hand, the lifting flow state is changed, so that the hydraulic mixing disturbance is increased, and the reaction efficiency is improved. The water body enters the transition zone 13 from the main reaction zone 14 and has two water flows, the overflow of which the top is open and the penetration of water holes are realized, and the two water flows enter the transition zone 13, and the disturbance is generated due to the different speeds and directions of the water flows, so that the release of gas is facilitated. The transition zone 13 is an annular section, and the height of the gas-liquid separation chamber plate 7 is higher than that of the gas-lifting guide plate 6, so that gas is prevented from driving water into the water collecting zone 30.
The water is redirected under the three-phase separator 8 and flows upwards after descending from the transition zone 13, and as part of the flocculated anaerobic sludge is present in the water, a floc filter zone 12 is formed in this zone, and the suspended matter in the water is reduced after the water passes through the floc filter zone 12. Due to the pressure difference formed by the bottom jet, the water body uniformly enters the inner return pipe 32 from the water inlet hole on the inner return pipe 32 and is then mixed with the raw water. Then the water body enters the three-phase separator 8 to separate gas, liquid and solid phases, the gas is discharged through the separating gas pipe 11, the water body falls into the upper parts of the transition zone 13 and the main reaction zone 14, and the gas is discharged through the discharge pipe. The water passes through the three-phase separator 8 and enters the annular overflow water collecting area 30, and finally flows out of the outlet 16.
The flocs separated by the three-phase separator 8 continuously heighten the lower floc filtering layer area 12, and finally the superfluous flocs enter the bottom of the main body 1 through the second floc recovery channel 23 and the first floc recovery channel 22, and are sucked from the sludge return pipe 33 to participate in water mixing. The bottom of the main body 1 is provided with a mud discharge pipe 17, and the main outer discharge is the floccule which contains more inorganic matters and cannot be sucked back. The bottom of the main body 1 is provided with an emptying pipe 18, the main function of which is to empty.
The aeration pipe 34 is externally connected with a blower, and air is released through the aeration head 35 to provide trace dissolved oxygen for the main reaction zone 14 and create an anoxic environment for anaerobic ammonia oxidizing bacteria.
It should be noted that the low pressure referred to in this application is a relative concept, and the design of each reflux is based on the bernoulli principle, that is, the pressure at the position where the liquid flow rate is high is smaller than the pressure at the position where the liquid flow rate is low, and the reflux is realized by the pressure difference generated by the two positions.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (16)
1. A multistage cooperative self-circulation anaerobic ammonia oxidation reaction device, comprising:
the main body (1) is provided with an inlet (15) and an outlet (16), a main reaction zone (14) is arranged in the main body, and a gas-liquid separation zone (9) is arranged above the main reaction zone (14);
a water body accelerating device connected with the inlet (15), wherein at least a part of the inner diameter of the water body accelerating device is reduced along the flowing direction of the water body;
the main reaction zone (14) is formed between the uplink guide pipe (4) and the main body (1), the water inlet end of the uplink guide pipe (4) is arranged corresponding to the water outlet end of the water body accelerating device, and a first notch (20) is formed at one end of the uplink guide pipe (4) corresponding to the water body accelerating device;
aeration means, provided in said main reaction zone (14), adapted to provide oxygen to microorganisms in said main reaction zone (14);
the water inlet end of the gas-liquid separation zone (9) is communicated with the main reaction zone (14), and the water outlet end of the gas-liquid separation zone (9) is communicated with the outlet (16);
the water body accelerating device comprises:
a water jet (2);
the water ejector (2) is communicated with the inlet (15), and at least one part of the water ejector (2) is arranged in a conical shape along the flowing direction of the water body; the uplink guide pipe (4) is covered and buckled above the water ejector (2), and the first notch (20) is formed between the uplink guide pipe (4) and the water ejector (2);
the water body accelerating device also comprises at least one accelerating spray pipe (3);
at least one part of the accelerating spray pipe (3) is arranged in a conical shape along the flowing direction of the water body;
the uplink guide pipe (4) is covered and buckled above the accelerating spray pipe (3), and a first gap (20) is formed between the uplink guide pipe (4) and the accelerating spray pipe (3);
the accelerating spray pipe (3) is covered and buckled above the water ejector (2).
2. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
further comprises: a hydraulic mixing drum (5);
the cover is buckled outside the uplink guide pipe (4) and is positioned in front of a water body flow path in the hydraulic mixing cylinder (5), and a second gap (21) is formed between the hydraulic mixing cylinder (5) and the uplink guide pipe (4);
a hydraulic main mixing area (19) is formed in the area between the hydraulic mixing cylinder (5) and the uplink guide pipe (4);
the region between the hydraulic mixing drum (5) and the main body (1) forms the main reaction zone (14), and the hydraulic main mixing zone (19) and the main reaction zone (14) are communicated through the second notch (21).
3. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 2, wherein,
the gas-liquid separation device comprises a main body (1) and is characterized by further comprising a gas-liquid separation chamber plate (7), wherein a gas-liquid separation area (9) is formed between the gas-liquid separation chamber plate (7) and the main body (1), the bottom of the gas-liquid separation chamber plate (7) extends and inclines towards the direction close to the side wall of the main body (1), and a first gap (24) is reserved between the bottom of the gas-liquid separation chamber plate (7) and the main body (1).
4. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 3, wherein,
the device also comprises a gas lifting guide plate (6) which is arranged at the inner side of the gas-liquid separation chamber plate (7), wherein the top end of the gas lifting guide plate (6) extends towards the direction away from the water body accelerating device, and a transition area (13) is formed between the gas lifting guide plate (6) and the gas-liquid separation chamber plate (7);
the bottom of the gas lifting guide plate (6) is connected with the water injector (2), and the area between the gas lifting guide plate (6) and the hydraulic mixing cylinder (5) forms the main reaction area (14);
the region between the air lifting guide plate (6) and the main body (1) forms a first floc recovery channel (22).
5. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 4, wherein,
the outer side wall of the air lifting guide plate (6) is provided with a plurality of water passing holes, and the water passing holes are positioned at the edge of the top opening of the air lifting guide plate (6).
6. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 4, wherein,
the inner side wall of the gas lifting guide plate (6) is provided with a plurality of sludge reflecting plates (29), and one end of each sludge reflecting plate (29) extends towards the inside of the gas lifting guide plate (6).
7. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 4, wherein,
the three-phase separator (8) is arranged in the gas-liquid separation zone (9), a water collecting zone (30) is formed in the area between the three-phase separator (8) and the top of the main body (1), and a floc filtering layer area (12) is formed in the area between the three-phase separator (8) and the bottom of the gas-liquid separation chamber plate (7);
one side of the three-phase separator (8) facing the top of the main body (1) is provided with a separation air pipe (11), the air inlet end of the separation air pipe (11) is connected with the air outlet end of the three-phase separator (8), and the air outlet end of the separation air pipe (11) extends to the transition zone (13).
8. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 7, wherein,
the device further comprises a plurality of inner return pipes (32), wherein the water inlet ends of the inner return pipes (32) are communicated with the floc filtering layer area (12), and the water outlet ends of the inner return pipes (32) are communicated with the water inlet ends of the accelerating spray pipes (3);
the pipe wall of the water inlet end of the inner return pipe (32) is provided with a plurality of water inlet holes.
9. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 7, wherein,
a hydraulic guide plate (28) is arranged in the floc filtering layer area (12), a second floc recovery channel (23) is formed between the hydraulic guide plate (28) and the inner side wall of the main body (1), and the second floc recovery channel (23) is communicated with the first floc recovery channel (22);
a second gap (25) is reserved between the hydraulic guide plate (28) and the gas-liquid separation chamber plate (7);
a third gap (26) is reserved between the hydraulic guide plate (28) and the air lifting guide plate (6).
10. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 7, wherein,
the inner side wall of the main body (1) is provided with a water collecting plate (10), the water collecting plate (10) is positioned in the gas-liquid separation zone (9), a water collecting zone (30) is formed in the area between the water collecting plate (10) and the main body (1), and the water collecting zone (30) is communicated with the outlet (16).
11. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the aeration device comprises a plurality of aeration pipes (34), wherein the air outlet end of the aeration pipe (34) is provided with a plurality of aeration heads (35), and the air inlet end of the aeration pipe (34) is communicated with an external air source.
12. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the device also comprises a sludge return pipe (33), one end of the sludge return pipe is communicated with the water ejector (2), and the other end of the sludge return pipe is communicated with the bottom of the main body (1).
13. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the water outlet end of the uplink guide pipe (4) is in a diffusion shape along the flowing direction of the water body.
14. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the device further comprises a sludge discharge pipe (17), wherein the inlet (15) end of the sludge discharge pipe (17) is communicated with the bottom of the main reaction zone (14), the outlet (16) end of the sludge discharge pipe (17) extends out of the main body (1), and the outlet (16) end of the sludge discharge pipe (17) is suitable for being connected with sludge storage equipment.
15. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the device also comprises an emptying pipe (18) which is used for communicating the bottom of the main body (1) with the outside of the main body (1), and an inlet (15) of the emptying pipe (18) is positioned at the lowest position of the bottom of the main body (1).
16. The multistage cooperative self-circulation anaerobic ammonia oxidation reaction device according to claim 1, wherein,
the bottom of the main body (1) is in a conical structure.
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| CN103803694A (en) * | 2013-12-25 | 2014-05-21 | 江苏一环集团有限公司 | Integrated efficient Fenton precipitation device |
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| EP0315233A1 (en) * | 1987-10-08 | 1989-05-10 | Gist-Brocades N.V. | Fluidized bed process and apparatus |
| CN103803694A (en) * | 2013-12-25 | 2014-05-21 | 江苏一环集团有限公司 | Integrated efficient Fenton precipitation device |
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