CN115180778A - Biological contact oxidation and MBR (membrane bioreactor) filtration combined sewage treatment method and system - Google Patents
Biological contact oxidation and MBR (membrane bioreactor) filtration combined sewage treatment method and system Download PDFInfo
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- CN115180778A CN115180778A CN202210962865.0A CN202210962865A CN115180778A CN 115180778 A CN115180778 A CN 115180778A CN 202210962865 A CN202210962865 A CN 202210962865A CN 115180778 A CN115180778 A CN 115180778A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F3/02—Aerobic processes
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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
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/102—Permeable membranes
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- 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)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The sewage treatment method and the sewage treatment system combining biological contact oxidation and MBR filtration are characterized in that sewage is firstly treated by a biological contact oxidation device for one time to remove partial sludge and harmful substances in the sewage; then, performing secondary treatment by using an MBR membrane biological reaction and separation filtering device, and further removing partial sludge and harmful substances in the wastewater to obtain primary clear water; the primary clear water is disinfected to reach the standard; and respectively pumping part of clear water reaching the standard back to the cleaning biological contact oxidation device and the MBR membrane biological reaction and separation filtering device. The invention can reasonably, efficiently and stably treat the sewage and then discharge the sewage after reaching the standard, has good purification treatment effect, low system operation cost, easy maintenance, energy conservation and environmental protection.
Description
Technical Field
The invention belongs to the technical field of sewage treatment methods and treatment systems.
Background
The membrane-bioreactor process, i.e., the MBR process, is a technology combining membrane separation technology with biochemical treatment of sewage, and is also called as a membrane separation activated sludge process. Most of filter media in the membrane bioreactor applied industrially at present are hollow fiber membranes or flat membranes, the pore diameter of the filter media is 0.1-0.4 mu m, active sludge and macromolecular organic matters in a biochemical reaction tank can be retained, the concentration of the active sludge is greatly improved, the Hydraulic Retention Time (HRT) and the Sludge Retention Time (SRT) can be respectively controlled, a secondary sedimentation tank is omitted, the active sludge in the reactor can carry out biodegradation on the organic matters in sewage, the substances which are difficult to degrade can be continuously reacted and degraded in the reaction tank, and the degraded water is filtered by a membrane device to enable the water to reach the standard for recycling or discharging. Therefore, the membrane-bioreactor process greatly strengthens the function of the bioreactor through a membrane separation technology, can obtain clear and up-to-standard treated water at regular intervals, and further has the following advantages:
(1) Due to the interception function of the membrane, the high-concentration microbial biomass is maintained in the reactor, and the biochemical efficiency is improved;
(2) The membrane separation can make microorganisms completely retained in the bioreactor, realize the complete separation of Hydraulic Retention Time (HRT) and Sludge Retention Time (SRT) of the bioreactor, and simultaneously realize short HRT and long SRT (or long sludge discharge period), so the device has the functions of high volume load and strong load impact resistance.
However, the existing membrane-bioreactor process still has some defects, mainly represented by:
(1) In the operation process, the membrane is easy to be polluted, and the reduction speed of the membrane flux is fast. The reason is that the pore diameter of the membrane is 0.1-0.4 μm, so that particles are deposited on the surface of the membrane, bacteria, macromolecules and the like on the surface of the membrane are adsorbed or enter the membrane material, or the blockage of the pores of the membrane occurs. If the water is not cleaned and maintained in time, the water yield is reduced, the effluent quality is unstable and reaches the standard, the service life of the membrane material is shortened, and further, the operation and maintenance management are inconvenient, so that the operation cost is high;
(2) Most membrane separation materials in the membrane bioreactor applied industrially at present are hollow fiber membranes or flat membranes, the membrane aperture of the membrane separation materials is 0.1-0.4 mu m, taking the flat membranes as an example, the operating flux of membrane reaction element pieces is 10L/square meter h-50L/square meter h, obviously, the quantity of water produced by the membrane reaction element pieces is low, and the quantity of the required membrane area is matched in a manner that the quantity of the membrane elements is accumulated in direct proportion when the engineering design and the sewage treatment are carried out, namely, the quantity of the membrane elements is increased when the membrane aperture is smaller, and the quantity of the membrane elements is accumulated into the required membrane area, so that the required water production quantity (membrane water quantity) can be met, the manufacturing cost of the membrane separation materials and the construction cost of the engineering membrane reactor are high, and the MBR has poor cost performance and prevents the wide application of the membrane separation materials;
(3) The membrane bioreactor applied in industrialization at present is easy to be polluted in the operation process, the reduction speed of the membrane flux is fast, when the membrane flux of a small number of membrane reaction element pieces is invalid (the operation flux is less than 10L/square meter. H), the invalid membrane reaction element pieces can not be correspondingly replaced into qualified membrane reaction element pieces at all, because the membrane reaction element pieces have no interchangeability, if the membrane reaction element pieces are correspondingly replaced into the qualified membrane reaction element pieces, the whole MBR membrane reaction element is correspondingly replaced into the qualified MBR membrane reaction element, the water yield (membrane water yield) required by engineering design can be met, and the maintenance and operation cost and the engineering cost of the membrane separation material are high, so the cost performance of the MBR membrane reactor is poor, and the wide application and use value of the MBR membrane reactor is hindered.
Disclosure of Invention
The invention aims to solve the defects of the prior art, provides a method which integrates a biological contact oxidation method and an MBR filtration method, has wide application range, can perform high-efficiency and stable treatment on sewage and wastewater and then discharge the sewage and the wastewater after reaching the standard, and provides a treatment system which can realize the method and has low manufacturing cost and low operation cost.
The technical scheme adopted by the invention is as follows:
the sewage treatment method combining biological contact oxidation and MBR filtration comprises the following steps:
s1, treating sewage by using a biological contact oxidation device, and performing primary treatment on the sewage through aerobic biochemical reaction, adsorption and filtration to remove partial sludge and harmful substances in the sewage;
s2, performing secondary treatment on the primarily treated sewage by using an MBR (membrane bioreactor) and separation filtering device, and further removing partial sludge and harmful substances in the wastewater to obtain primary clear water;
s3, sterilizing the primary clear water to obtain dischargeable clear water reaching the standard;
and S4, respectively pumping part of clear water reaching the standard back to the biological contact oxidation device and the MBR membrane biological reaction and separation filter device, cleaning the biological contact oxidation device and the MBR membrane biological reaction and separation filter device, and discharging the cleaned sludge and sewage out of the biological contact oxidation device and the MBR membrane biological reaction and separation filter device.
The sewage treatment system for realizing the sewage treatment method comprises a sewage regulating tank, a biological contact oxidation and MBR filtration integrated combination device, a clean water tank, a water inlet pipeline, a lifting water pump, a water outlet pipeline and a cleaning water pipe, wherein the sewage regulating tank, the biological contact oxidation and MBR filtration integrated combination device and the clean water tank are sequentially arranged;
the biological contact oxidation and MBR filtration integrated combined device comprises a filtration and purification tank, a first deep well which is arranged at the front end in the filtration and purification tank and discharges water from the bottom, a mounting frame arranged in the filtration and purification tank, an MBR membrane reaction tank arranged in the middle of the mounting frame, biological reaction devices respectively arranged at the front end and the rear end of the MBR membrane reaction tank, and a first aeration device arranged at the bottom of the filtration and purification tank, wherein the water outlet end of a water inlet pipeline is inserted into the first deep well;
a group of replaceable MBR membrane reaction elements are sequentially arranged in the MBR membrane reaction tank, a second aeration device is arranged at the bottom of the tank, a first liquid level controller is arranged in the tank, and a second deep well which discharges water from the bottom is arranged at the rear part in the MBR membrane reaction tank; the top surface of the tank wall of the MBR membrane reaction tank is lower than the top surface of the tank wall of the filtering and purifying tank, a concave overflow port is arranged at the top of the tank wall at the rear end of the MBR membrane reaction tank, and the top end of the second deep well is tightly attached to the overflow port at the top of the tank wall at the rear end of the MBR membrane reaction tank; the MBR membrane reaction element comprises two first vertical pipes with opposite notches, first screen plates and industrial filter cloth, wherein the first vertical pipes are symmetrically arranged, two ends of each first screen plate are inserted into the notches, the industrial filter cloth is wound on the first screen plates, and gaps are reserved between two ends of the outer surface of each first screen plate and the notches of the first vertical pipes; a water pumping pipeline is inserted into the MBR membrane reaction tank and is connected with the water outlet pipeline;
the biological reaction device is a group of replaceable filler carrier reaction components arranged on the mounting rack; the filler carrier reaction assembly comprises two symmetrically arranged second vertical pipes with opposite notches, two layers of second screen plates with two ends inserted into the notches, and filler filled in an inner cavity between the two layers of second screen plates, wherein gaps are reserved between the two ends of the outer surfaces of the screen plates and the notches of the second vertical pipes;
the cleaning water pipes connected with the clean water tank and the biological contact oxidation and MBR filtration integrated combined device comprise a first group of cleaning water pipes which are led out from the clean water tank and extend into first vertical pipes at two sides of an MBR membrane reaction element in two ways, and a second group of cleaning water pipes which are led out from the clean water tank and extend into second vertical pipes at two sides of a filler carrier reaction component in two ways, wherein a cleaning water pump is arranged on each cleaning water pipe;
the bottom parts of the sewage filtering and purifying tank and the MBR membrane reaction tank are respectively provided with a water outlet and a sludge outlet;
a pressure gauge and a flow meter are arranged on the water outlet pipeline behind the self-priming water pump;
the first aeration device and the second aeration device are respectively connected with the Roots blower through air supply pipelines, and electromagnetic valves are arranged on the air supply pipelines;
the lifting water pump, the self-priming water pump, the cleaning water pump, the pressure gauge, the flow meter, the Roots blower, the electromagnetic valve and the first liquid level controller are all connected with the PLC control system.
And furthermore, a second liquid level controller is arranged in the sewage regulating tank and is connected with the PLC control system.
Furthermore, the membrane reaction element in the MBR membrane reaction tank, the industrial filter cloth is wound on the first screen plate to form a membrane with the aperture of 0.1-38 μm.
The invention has at least the following advantages:
1. the method integrates a biological contact oxidation process and an MBR membrane-biological reaction process, the sewage is sequentially subjected to continuous and progressive sequential treatment by adopting the biological contact oxidation device and the MBR membrane biological reaction and separation filtering device, and the clear water obtained by treatment is disinfected to form the standard water which can be directly discharged, so that the sewage purification treatment capacity is high, and the treatment efficiency is high; meanwhile, the water which reaches the standard and is obtained by self-treatment returns to the biological contact oxidation device, the MBR membrane biological reaction and separation filtering device for online cleaning, and the cleaning water can be treated by the biological contact oxidation device, the MBR membrane biological reaction and the separation filtering device, so that a virtuous cycle of sewage treatment and cleaning of treatment equipment is formed, and the device is energy-saving and environment-friendly.
2. The sewage treatment system disclosed by the invention is compact in equipment layout and small in occupied area, and particularly, the MBR membrane bioreaction and separation filtering device and the biological contact oxidation device are arranged in the same filtering and purifying tank by the biological contact oxidation and MBR filtering integrated combined device, so that the integrated device can be made into an integral device and sold as a single device, the modular and standardized construction of the sewage treatment system is easy to realize, the manufacturing cost is reduced, and the integrated device is also easy to expand and reconstruct the original sewage treatment plant.
3. By adopting the sewage treatment system, sewage is treated and filtered by the biological contact oxidation device and the MBR membrane bioreaction and separation filtering device in sequence, particularly the biological contact oxidation devices are respectively arranged at the front end and the rear end of the MBR membrane bioreaction and separation filtering device and are matched with the two groups of aeration devices, the flowing path of the sewage is prolonged in a compact layout space, the mass transfer process and the action effect are enhanced, the contact between the biological membrane and the sewage is enhanced, the transfer of organic matters from the sewage to microbial cells is accelerated, the microbial inhabitation and reproduction area in the volume of an integrated treatment device or a capital construction unit can be greatly improved, the oxygenation capacity of the sewage is improved, and the sewage purification capacity and purification effect are greatly improved.
4. The MBR membrane reaction element of the MBR membrane bioreaction and separation filtering device and the filler carrier reaction component of the biological contact oxidation device can be replaced, the installation and the disassembly are simple, the overhaul and the maintenance are convenient, and the operation efficiency of a sewage treatment system can be improved.
5. The MBR membrane reaction element and the filler carrier reaction assembly are scientific and reasonable in structural design, and can be efficiently cleaned by being matched with a reasonable and efficient cleaning system, so that the operation time of the MBR membrane reaction element and the filler carrier reaction assembly is prolonged, the shutdown maintenance is reduced, and the operation cost is reduced.
6. The invention effectively solves the problems and difficulties that the sludge treatment component of the existing sewage treatment system is easy to be polluted and difficult to maintain, and the MBR membrane reaction element has high manufacturing cost and overhigh system operation cost, etc., so that the treated water quality is better, the sewage treatment capacity is stronger, the system is kept to always stably discharge water up to the standard, the operation and maintenance are more convenient, and the automatic control of the whole treatment process is realized. The method has wide application range and is suitable for large, medium and small sewage treatment plants with various sewage treatment capacities.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic diagram of the hydroelectric control of the system of the present invention;
FIG. 3 is a schematic plan view of the system of the present invention;
FIG. 4 isbase:Sub>A schematic diagram of the system of the present invention showing the integrated bio-contact oxidation and MBR filtration unit of FIG. 3 in an elevation view along A-A;
FIG. 5 is a schematic diagram of an integrated biological contact oxidation and MBR filtration unit;
FIG. 6 is a schematic view of the MBR membrane reaction element configuration;
FIG. 7 is a schematic view of a purge line arrangement.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
The sewage treatment method combining biological contact oxidation and MBR filtration is shown in FIG. 1 and comprises the following steps:
s1, treating sewage by using a biological contact oxidation device, and performing primary treatment on the sewage through aerobic biochemical reaction, adsorption and filtration to remove partial sludge and harmful substances in the wastewater;
s2, performing secondary treatment on the primarily treated sewage by using an MBR (membrane bioreactor) and separation filtering device, and further removing partial sludge and harmful substances in the wastewater to obtain primary clear water;
s3, sterilizing the primary clear water to obtain dischargeable clear water reaching the standard;
s4, as shown in the figure 2, part of clear water which reaches the standard is respectively pumped back to the biological contact oxidation device 6 and the MBR membrane biological reaction and separation filter device 12.1, the biological contact oxidation device and the MBR membrane biological reaction and separation filter device are cleaned, the cleaned sludge and sewage are discharged out of the biological contact oxidation device and the MBR membrane biological reaction and separation filter device, and the discharged cleaning sewage is returned to the sewage adjusting tank 1.
As shown in fig. 3 and 4, the sewage treatment system for implementing the sewage treatment method of the present invention includes a sewage conditioning tank 1, a biological contact oxidation and MBR filtration integrated combination device, a clean water tank 17, a water inlet pipeline 9 connecting the sewage conditioning tank and the biological contact oxidation and MBR filtration integrated combination device, a lift water pump 2 disposed on the water inlet pipeline and located in the sewage conditioning tank 1, a water outlet pipeline 11 connecting the biological contact oxidation and MBR filtration integrated combination device and the clean water tank and equipped with a self-priming water pump 14, and a cleaning water pipe connecting the clean water tank and the biological contact oxidation and MBR filtration integrated combination device.
Biological catalytic oxidation and MBR filter integral type composite set as shown in figure 3, figure 4, figure 5, including filtering purification pond 4, set up in the first deep well 7 of front end and following bottom play water in filtering purification pond, set up mounting bracket 5 in filtering purification pond, set up in MBR membrane reaction tank 12 of mounting bracket intermediate position, set up respectively in the biological reaction unit 6 of MBR membrane reaction tank front end and rear end, set up in the first aeration equipment 8 of filtering purification pond bottom of the pool, the play water end of inlet channel 9 inserts in first deep well 7. The first aeration device is a device in the prior art, and an air supply pipe of the first aeration device is connected with a Roots blower. The tank wall top surface of the MBR membrane reaction tank 12 is lower than the tank wall top surface of the filtering and purifying tank 4, and a concave overflow port is arranged at the top of the tank wall at the rear end of the MBR membrane reaction tank. A water pumping pipeline 12.4 is inserted into the MBR membrane reaction tank and is connected with the water outlet pipeline 11.
A group of replaceable MBR membrane reaction elements 12.1 are sequentially arranged in the MBR membrane reaction tank 12, a second aeration device 12.2 is arranged at the bottom of the tank, a first liquid level controller 12.5 is arranged in the tank, and a second deep well 12.3 which discharges water from the bottom is arranged at the rear part in the MBR membrane reaction tank. The tank wall top surface of the MBR membrane reaction tank 12 is lower than the tank wall top surface of the filtering and purifying tank 4, a concave overflow port is arranged at the top of the tank wall at the rear end of the MBR membrane reaction tank, and the top end of the second deep well is tightly attached to the overflow port at the top of the tank wall at the rear end of the MBR membrane reaction tank. The second aeration device is a device in the prior art, and a gas supply pipe of the second aeration device is connected with a Roots blower. The MBR membrane reaction tank can be made of steel.
The MBR membrane reaction element 12.1 comprises a first vertical pipe 12.1.1 with two symmetrically arranged notches opposite to each other, a first screen plate 12.1.2 with two ends inserted into the notches, and industrial filter cloth wound on the first screen plate, wherein the pore diameter of a membrane formed by winding the industrial filter cloth on the first screen plate is 0.1-38 mu m, as shown in FIG. 6. Gaps are reserved between two ends of the outer surface of the first screen plate and the notches of the first vertical pipes. When MBR membrane reaction elements need to be cleaned, a cleaning system is started through a PLC control system, cleaning water is injected into first vertical pipes on two sides of a first screen plate through cleaning pipelines, water is sprayed out from gaps, industrial filter cloth and the first screen plate are washed from two sides, and the function of cleaning the MBR membrane reaction elements regularly on line or off line is achieved. The MBR membrane reaction element is integrally a plate-shaped element, is vertically arranged in the MBR membrane reaction tank at equal intervals, and the two sides of the MBR membrane reaction element are inserted into the front tank wall and the rear tank wall of the MBR membrane reaction tank. As shown in fig. 3 and 5, vertical square pipes may be welded to the front and rear walls of the MBR membrane reaction tank in pairs, and an insertion groove into which the MBR membrane reaction element is inserted may be formed between the two square pipes. The MBR membrane reaction element can be conveniently inserted into or taken out of the MBR membrane reaction tank. Vertical grooves for inserting MBR membrane reaction elements can be directly machined on the wall of the MBR membrane reaction tank.
The biological reaction device 6 is a group of replaceable filler carrier reaction components arranged on the mounting rack 5; the filler carrier reaction assembly comprises two symmetrically arranged second vertical pipes 6.1 with opposite notches, two layers of second screen plates 6.2 with two ends inserted in the notches, and filler filled in an inner cavity between the two layers of second screen plates, wherein gaps are reserved between the two ends of the outer surfaces of the screen plates and the notches of the second vertical pipes. When the filler carrier reaction assembly needs to be cleaned, the cleaning system is started through the PLC control system, cleaning water is injected into second vertical pipes on two sides of the second screen plate through cleaning pipelines, water is sprayed out from the gap, the second screen plate and the filler are washed from two sides, and the function of cleaning the filler carrier reaction assembly on line or off line at regular intervals is achieved. The filler filled in the inner cavity between the two second net plates can adopt biological reaction fillers with adsorption and filtration functions, such as activated carbon, ceramsite, stainless steel tennis balls, carbon fibers and the like. The whole packing carrier reaction element is also a plate-shaped element and is inserted on the mounting frame at equal intervals. As shown in fig. 5, vertical square pipes and bottom fixed support square pipes may be welded on the mounting frame in pairs, and a slot into which the packing carrier reaction element is inserted is formed between the two vertical square pipes.
As shown in fig. 2 and 7, the cleaning water pipe connecting the clean water tank and the integrated bio-contact oxidation and MBR filtration device includes a first group of cleaning water pipes led out from the clean water tank and extending into first vertical pipes 12.1.1 at two sides of a MBR membrane reaction element 12.1 in two ways, and a second group of cleaning water pipes led out from the clean water tank and extending into second vertical pipes 6.1 at two sides of a filler carrier reaction component in two ways, and a cleaning water pump 13 is disposed on the cleaning water pipes. The cleaning water pipe is not shown in fig. 3 and 4 so as not to affect the expression of the integrated composite filter device.
The bottoms of the sewage filtering and purifying tank 4 and the MBR membrane reaction tank 12 are respectively provided with a water outlet and a sludge outlet. The water outlet discharges the cleaning water, and the cleaning water returns to the sewage adjusting tank 1 and enters the biological contact oxidation and MBR filtration integrated combined device again for treatment, so that the sewage is circularly treated and utilized. The sludge discharge port is used for discharging sludge deposited at the bottom of the tank to a sludge tank and cleaning the sludge tank regularly.
A pressure gauge 15 and a flow meter 16 are arranged on the water outlet pipeline 11 behind the self-priming water pump 14.
The first aeration device 8 and the second aeration device 12.2 are respectively connected with a Roots blower 10 through air supply pipelines, and electromagnetic valves 18 are arranged on the air supply pipelines; the lifting water pump 2, the self-priming water pump 14, the cleaning water pump 13, the pressure gauge 15, the flow meter 16, the Roots blower 10, the electromagnetic valve 18 and the first liquid level controller 12.5 are all connected with the PLC control system 19. A second liquid level controller 3 can be arranged in the sewage regulating tank, and the second liquid level controller 3 is also connected with a PLC control system 19.
As shown in fig. 3, 4 and 5, the second liquid level controller 3 instructs the lift pump 2 to open and close through the PLC control system 19, the sewage in the sewage adjusting tank 1 is pumped into the first deep well pipe 7 through the lift pump, flows into the filtering and purifying tank 4 through the bottom of the first deep well, slowly permeates upward from the bottom of the biological reaction device 6, and performs aerobic biochemical reaction and adsorption filtering treatment in the process of fully contacting with the filler carrier reaction component, thereby effectively degrading the concentration of organic matters and performing nitrogen and phosphorus removal treatment. Meanwhile, the PLC control system controls the starting and stopping of the Roots blower, the first aeration device is started to perform normal aeration, and the sewage is oxygenated and aerated in advance and then passes through the filler carrier reaction component to enhance the speed and effect of aerobic biochemical reaction. The front end and the rear end of the MBR membrane reaction tank 12 are respectively provided with a biological reaction device 6, sewage flows into the biological reaction device through the first deep well and then flows backwards along a channel formed between the bottoms of the MBR membrane reaction tank and the microfiltration membrane filter tank and the bottom of the filtration purification tank, and simultaneously slowly permeates upwards along the biological reaction device at the front end and the rear end, the sewage subjected to primary treatment through the biological reaction device slowly overflows an overflow port at the top end of the tank wall at the rear end of the MBR membrane reaction tank, flows into the second deep well 12.3, and enters the MBR membrane reaction tank through the bottom of the second deep well. The concentration of pollutants in the sewage treated by the biological reaction device for one time is greatly reduced, and the sewage is converted into secondary sewage which has good biodegradability and can reduce the pollution to the MBR membrane reaction element, so that the oxygen transmission efficiency of the MBR membrane reaction element is improved, the oxygen supply power consumption is reduced, and the power consumption of the sewage in a treatment unit is reduced. And (3) after the secondary sewage enters an MBR membrane reaction tank, intercepting pollutants with the particle size of more than 0.1-38 mu m through membrane separation. The particle size of most of the particles of the activated sludge is larger than 40 mu m, the activated sludge is intercepted by membrane separation, microorganisms in sewage can be basically retained in an MBR membrane reaction tank, so that the high-concentration microorganism biomass can be maintained in the MBR membrane reaction tank all the time, the biochemical efficiency is improved, high-concentration sewage with toxicity, volatility and high chroma can be treated, the loss of suspended matters and high-molecular-weight organic matters can be prevented, a plurality of macromolecular degradation-resistant organic matters with slow decomposition speed can be caused, the Hydraulic Retention Time (HRT) and the Sludge Retention Time (SRT) of an MBR membrane separation process can be completely separated by prolonging the retention time of the sewage in the MBR membrane reaction tank, the short HRT and the long SRT (or the period of sludge discharge cycle) can be simultaneously realized, the capacity of high volume load and strong load impact resistance are realized, and the capacity of the MBR process for treating the degradation-resistant organic matters is enhanced.
The MBR membrane with the membrane aperture of 0.1-38 mu m is formed by cheap industrial filter cloth, the material price is lower than that of a hollow fiber membrane or a flat membrane with the membrane aperture of 0.1-0.4 mu m commonly used in the prior art, and the MBR membrane reaction element has higher water yield than that of an MBR membrane reaction element adopting the hollow fiber membrane or the flat membrane in the prior art, has better wear resistance, strength, corrosion resistance, acid resistance and the like, has the advantages of smooth surface, long service life and the like, and realizes better sewage treatment effect by using the MBR membrane reaction element with lower manufacturing cost and better performance. In addition, sewage entering the MBR membrane reaction tank is treated by the biological reaction device, so that the pollution of the sewage to the MBR membrane reaction element is greatly reduced, stable high-flux produced water of the MBR membrane reaction element can be realized, the service life of the MBR membrane reaction element is prolonged, and the system operation cost is reduced.
The sewage after the MBR membrane reaction secondary treatment is pumped into a clean water tank 17 through a self-priming pump 14 and a water pumping pipeline 12.4, so that the orderly, continuous and gradual advanced treatment of the sewage is realized. Chlorine dioxide, sodium hypochlorite, sodium dichloroisocyanurate and other disinfectants are put into the clean water tank, bacteria such as escherichia coli and the like in the water are killed, and the standard clean water which can be discharged is obtained.
The PLC control system 19 of the invention can monitor the working condition of the system in real time and carry out automatic control. When the MBR membrane reaction element 12.1 and the filler carrier reaction component are seriously blocked, the pressure gauge 15 and the flow meter 16 on the water outlet pipeline transmit pressure and flow information to the PLC control system, the PLC control system controls the cleaning water pump 13 to be started and stopped to pump water from the MBR membrane reaction tank and pump water in the clean water tank to the cleaning water pipe, and the MBR membrane reaction element 12.1 and the filler carrier reaction component are cleaned. PLC control system 19 opens and close through the information control lift water pump 2 of second liquid level controller 3 transmission to the water level of control sewage equalizing basin, the information control self priming water pump 14 through the transmission of first liquid level controller 12.6 opens and close, thereby the water level of control MBR membrane reaction tank.
The system is particularly suitable for large, medium and small sewage treatment plants with various sewage treatment capacities, and can carry out standard treatment on a large amount of sewage and wastewater with high efficiency, stability and low cost.
Claims (4)
1. The sewage treatment method combining biological contact oxidation and MBR filtration is characterized by comprising the following steps:
s1, treating sewage by using a biological contact oxidation device, and performing primary treatment on the sewage through aerobic biochemical reaction, adsorption and filtration to remove partial sludge and harmful substances in the sewage;
s2, performing secondary treatment on the sewage subjected to the primary treatment by using an MBR (membrane biological reactor) and separation filtering device, and further removing partial sludge and harmful substances in the wastewater to obtain primary clear water;
s3, disinfecting the primary clear water to obtain dischargeable clear water reaching the standard;
and S4, respectively pumping part of clear water reaching the standard back to the biological contact oxidation device and the MBR membrane biological reaction and separation filter device, cleaning the biological contact oxidation device and the MBR membrane biological reaction and separation filter device, and discharging the cleaned sludge and sewage out of the biological contact oxidation device and the MBR membrane biological reaction and separation filter device.
2. The sewage treatment system for realizing the sewage treatment method of claim 1, comprising a sewage adjusting tank (1), a biological contact oxidation and MBR filtration integrated combination device, a clean water tank (17), a water inlet pipeline (9) for connecting the sewage adjusting tank and the biological contact oxidation and MBR filtration integrated combination device, a lift water pump (2) arranged on the water inlet pipeline and positioned in the sewage adjusting tank (1), a water outlet pipeline (11) for connecting the biological contact oxidation and MBR filtration integrated combination device and the clean water tank and provided with a self-priming water pump (14), and a cleaning water pipe for connecting the clean water tank and the biological contact oxidation and MBR filtration integrated combination device, which are arranged in sequence;
the biological contact oxidation and MBR filtration integrated combined device comprises a filtration and purification tank (4), a first deep well (7) which is arranged at the front end in the filtration and purification tank and discharges water from the bottom, a mounting frame (5) arranged in the filtration and purification tank, an MBR membrane reaction tank (12) arranged in the middle of the mounting frame, biological reaction devices (6) respectively arranged at the front end and the rear end of the MBR membrane reaction tank, and a first aeration device (8) arranged at the bottom of the filtration and purification tank, wherein the water outlet end of a water inlet pipeline (9) is inserted into the first deep well (7);
a group of replaceable MBR membrane reaction elements (12.1) are sequentially arranged in the MBR membrane reaction tank (12), a second aeration device (12.2) is arranged at the bottom of the tank, a first liquid level controller (12.5) is arranged in the tank, and a second deep well (12.3) which discharges water from the bottom is arranged at the rear part in the MBR membrane reaction tank; the top surface of the tank wall of the MBR membrane reaction tank (12) is lower than the top surface of the tank wall of the filtering and purifying tank (4), a concave overflow port is arranged at the top of the tank wall at the rear end of the MBR membrane reaction tank, and the top end of the second deep well is tightly attached to the overflow port at the top of the tank wall at the rear end of the MBR membrane reaction tank; the MBR membrane reaction element (12.1) comprises two first vertical pipes (12.1.1) with opposite notches, first screen plates (12.1.2) with two ends inserted into the notches and industrial filter cloth wound on the first screen plates, wherein gaps are reserved between the two ends of the outer surface of each first screen plate and the notches of the first vertical pipes; a water pumping pipeline (12.4) is inserted into the MBR membrane reaction tank, and the water pumping pipeline is connected with the water outlet pipeline (11);
the biological reaction device (6) is a group of replaceable filler carrier reaction components arranged on the mounting rack (5); the filler carrier reaction assembly comprises two symmetrically arranged second vertical pipes (6.1) with opposite notches, two layers of second screen plates (6.2) with two ends inserted into the notches, and filler filled in an inner cavity between the two layers of second screen plates, wherein gaps are reserved between the two ends of the outer surfaces of the screen plates and the notches of the second vertical pipes;
the cleaning water pipe for connecting the clean water tank and the integrated biological contact oxidation and MBR filtration combined device comprises a first group of cleaning water pipes which are led out from the clean water tank and extend into first vertical pipes (12.1.1) at two sides of an MBR membrane reaction element (12.1) in two ways, and a second group of cleaning water pipes which are led out from the clean water tank and extend into second vertical pipes (6.1) at two sides of a filler carrier reaction component in two ways, wherein a cleaning water pump (13) is arranged on the cleaning water pipes;
the bottoms of the sewage filtering and purifying tank (4) and the MBR membrane reaction tank (12) are respectively provided with a water outlet and a sludge discharge port;
a pressure gauge (15) and a flow meter (16) are arranged on the water outlet pipeline (11) behind the self-priming water pump (14);
the first aeration device (8) and the second aeration device (12.2) are respectively connected with a Roots blower (10) through air supply pipelines, and electromagnetic valves (18) are arranged on the air supply pipelines;
the lifting water pump (2), the self-priming water pump (14), the cleaning water pump (13), the pressure gauge (15), the flow meter (16), the Roots blower (10), the electromagnetic valve (18) and the first liquid level controller (12.5) are all connected with the PLC control system (19).
3. Sewage treatment system according to claim 2, characterised in that a second level controller (3) is arranged in the sewage regulating tank (1), the second level controller (3) being connected to a PLC control system (19).
4. The wastewater treatment system according to claim 2, wherein the membrane reaction element (12.1) in the MBR membrane reaction tank (12) is formed by winding industrial filter cloth on a first screen plate, and the pore size of the membrane is 0.1-38 μm.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642997U (en) * | 1992-11-25 | 1994-06-07 | 相川鉄工株式会社 | Cleaning equipment |
| JPH1070939A (en) * | 1996-08-29 | 1998-03-17 | Tiger Kawashima Co Ltd | Seedling case washer |
| CN202208660U (en) * | 2011-09-23 | 2012-05-02 | 汪义恩 | Membrane biological reaction medium and sewage treatment equipment |
| CN208802964U (en) * | 2018-07-06 | 2019-04-30 | 云南世诚环境技术有限公司 | A kind of Hybrid Biofilm Reactor and bioreactor sewage and wastewater treatment system |
| CN209267525U (en) * | 2018-12-14 | 2019-08-16 | 青海水利水电集团共和光伏发电有限公司 | A kind of photovoltaic home system automatically cleaning module frame |
| CN211989905U (en) * | 2019-11-29 | 2020-11-24 | 江苏美高钟表有限公司 | Clock and watch accessory belt cleaning device |
-
2022
- 2022-08-11 CN CN202210962865.0A patent/CN115180778A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642997U (en) * | 1992-11-25 | 1994-06-07 | 相川鉄工株式会社 | Cleaning equipment |
| JPH1070939A (en) * | 1996-08-29 | 1998-03-17 | Tiger Kawashima Co Ltd | Seedling case washer |
| CN202208660U (en) * | 2011-09-23 | 2012-05-02 | 汪义恩 | Membrane biological reaction medium and sewage treatment equipment |
| CN208802964U (en) * | 2018-07-06 | 2019-04-30 | 云南世诚环境技术有限公司 | A kind of Hybrid Biofilm Reactor and bioreactor sewage and wastewater treatment system |
| CN209267525U (en) * | 2018-12-14 | 2019-08-16 | 青海水利水电集团共和光伏发电有限公司 | A kind of photovoltaic home system automatically cleaning module frame |
| CN211989905U (en) * | 2019-11-29 | 2020-11-24 | 江苏美高钟表有限公司 | Clock and watch accessory belt cleaning device |
Non-Patent Citations (3)
| Title |
|---|
| 李孟等: "给水处理原理", 31 December 2013, 武汉理工大学出版社, pages: 102 * |
| 蒋岚岚等: "膜生物反应器工艺设计及工程实例", 31 January 2015, 河海大学出版社, pages: 5 * |
| 费千等: "船舶辅机", 29 February 2008, 大连海事大学出版社, pages: 297 * |
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