CN211620064U - Novel high-efficient little aeration MBR process units - Google Patents
Novel high-efficient little aeration MBR process units Download PDFInfo
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- CN211620064U CN211620064U CN201921931421.0U CN201921931421U CN211620064U CN 211620064 U CN211620064 U CN 211620064U CN 201921931421 U CN201921931421 U CN 201921931421U CN 211620064 U CN211620064 U CN 211620064U
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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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Abstract
The utility model discloses a novel high-efficient little aeration MBR process units, including membrane cisterna, diaphragm, membrane frame, tubular micropore aerator, air-blower, self priming pump, reducer efflux aeration system, backwash pump, dissolved air tank, air compressor machine. The membrane tank is divided into an activated sludge aeration area and a membrane area; the activated sludge aeration zone is designed as an aerobic zone and is aerated by utilizing an air blower aeration system; the membrane area is designed as a micro-anoxic area, and aeration is carried out by utilizing a reducer jet aeration system. The utility model has the advantages that: aerobic and micro-anoxic two areas are arranged in the same pool, and a blast aeration system and a reducer jet aeration system are respectively adopted to supply oxygen to each area, so that the problems of low denitrification efficiency, non-uniform aeration, low oxygen transfer efficiency and the like of a single sludge system of the conventional MBR system are solved; in addition, the reducer jet aeration system utilizes the characteristic that the high-pressure high-speed air sweeps the membrane, can obviously improve the self-cleaning effect of the membrane and improve the anti-pollution performance of the membrane.
Description
Technical Field
The utility model relates to the water treatment field specifically is a novel high-efficient little aeration MBR process units.
Background
The MBR process is a wastewater treatment system organically combining a membrane separation technology and a biological treatment technology, a secondary sedimentation tank at the tail end of the traditional biological treatment technology is replaced by a high-precision membrane component, and the membrane component is utilized to intercept active sludge and suspended matters in wastewater, so that the high active sludge concentration is kept in a bioreactor, the biological treatment organic load is improved, and the sludge age and the hydraulic retention time of the sewage are thoroughly separated. Has the advantages of high treatment efficiency, compact structure, small occupied area, good effluent quality and high automation degree.
The MBR process tank continuously keeps high-concentration activated sludge, which is easy to cause microbial pollution on the membrane surface and cause the reduction of membrane flux, so that the traditional MBR process adopts a perforated pipe air diffusion device to supplement oxygen for the tank, the perforated pipe air diffusion device has larger bubble diameter, can fully stir sewage to wash the membrane surface and reduce membrane pollution, but the process has the defects of large aeration quantity and low oxygen utilization rate.
Moreover, the traditional MBR process adopts a single sludge system, namely an aerobic sludge system, so that the total nitrogen removal efficiency is low, the more and more strict sewage discharge standard is met, and the function of the MBR process is slightly single.
Disclosure of Invention
An object of the utility model is to provide a novel high-efficient little aeration MBR process units to solve the problem that above-mentioned background art center provided.
In order to achieve the above object, the utility model provides a following technical scheme: a novel high-efficiency micro-aeration MBR process device comprises a membrane pool, a membrane frame, a tubular micro-aeration device, an air blower, a self-priming pump, a reducing pipe jet aeration system, a reflux pump, a dissolved air tank and an air compressor.
The membrane tank is an MBR reaction vessel; the membrane is used for intercepting and filtering activated sludge and suspended matters in the sewage; the membrane frame is a steel structure support body fixedly provided with the membrane and integrates a gas distribution branch pipe; the self-sucking pump is used for sucking and filtering the water; the blower provides air for the system; the tubular microporous aerator is an air diffusion device fixedly arranged in the membrane tank; the reducing pipe jet aeration system has the main functions of flushing the membrane by using a high-pressure high-speed gas-water mixed beam and simultaneously oxygenating the membrane pool, so that the anti-pollution capacity of the membrane is improved; and the reflux pump pumps the mixed sewage in the MBR membrane tank to provide a water source for the reducer jet aeration system.
As a further aspect of the present invention: the membrane tank is divided into an activated sludge aeration zone and a membrane zone, wherein the activated sludge aeration zone is designed to be an aerobic zone, and the membrane zone is a micro-anoxic zone.
As a further aspect of the present invention: the activated sludge aeration zone is aerated by utilizing an air blower aeration system. The blast aeration system comprises a blower, a microporous aerator and a conveying pipeline. The air blower is connected with the micropore aeration through a pipeline and is conveyed to the micropore aerator in the pool at a high speed through an air conveying pipeline, and the micropore on the surface of the aerator is diffused into the biochemical pool to oxygenate the pool body.
As a further aspect of the present invention: the aeration branch pipe of the blower aeration system is designed into a ring shape.
As a further aspect of the present invention: the tubular microporous aerator is positioned at the bottom of the tank, and the installation height is more than 0.2m away from the bottom of the tank; the surface of the tubular aerator is provided with small holes of 80-100 microns, the diameter of the diffused bubbles is 0.5-5 mm, the contact area of air and sewage can be increased, the floating speed of the bubbles in water is low, and the utilization rate of oxygen can be increased; in addition, the aerator can aerate for 360 degrees, thereby avoiding the sludge accumulation at the bottom of the tank.
As a further aspect of the present invention: the membrane and the membrane frame in the membrane area are integrated into a membrane box with certain length, width and height; the installation of membrane incasement diaphragm adopts double structure, and 2 diaphragms are assembled into one row, and every row of diaphragm centre-to-centre spacing design is 90mm, both can ensure the aeration effect of every diaphragm, reduce the diaphragm and harden, but greatly reduced area again.
As a further aspect of the present invention: the membrane can be plate type membrane, hollow fiber type membrane or round tube type membrane.
As a further aspect of the present invention: the membrane area is aerated by using a reducing pipe jet aeration system, and the reducing pipe jet aeration system comprises an air compressor, a dissolved air tank, a reflux pump, a reducing jet pipe and a matched pipeline; compressed air discharged by an air compressor and high-pressure water flow pumped out by a reflux pump are mixed in a gas dissolving tank in a certain proportion to form gas dissolving water, the gas dissolving water is conveyed to a reducing jet pipe through a pipeline, the gas dissolving water is pressurized, accelerated and sprayed out by utilizing the special structure of a reducing pipe, the surface of an MBR membrane is flushed by utilizing high-pressure high-speed water flow, the effect of cleaning the membrane surface is achieved, and meanwhile, the membrane tank is oxygenated.
As a further aspect of the present invention: the reducing pipe jet aeration system and the membrane frame are integrally designed, are positioned at the position which is 0.2-0.3 m below the membrane and 0.2m away from the bottom of the pool, and adopt a vertical installation mode, and each membrane frame is at least provided with 1 set of reducing jet pipes; the distance between the centers of the main pipes of the reducer jet aeration system is 0.3m, the main pipes are made of 304 stainless steel, the diameter of an inlet is 32mm, the diameter of an outlet is 12mm, and the length is 20 mm.
As a further aspect of the present invention: the water production system comprises a self-sucking pump, a water production pipeline and a diaphragm; the three forms a closed passage, and self priming pump negative pressure suction diaphragm makes the sewage in the membrane cisterna see through the diaphragm surface and enters into diaphragm inner channel, and the sewage after filtration is collected to producing the water pipeline, through pipeline discharge cell body, the mud tunica is held back in the membrane cisterna.
As a further aspect of the present invention: the operation mode of the water production system is intermittent operation, the operation lasts for 13min, and the operation is stopped for 2 min.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the aerobic area and the micro-anoxic area are arranged in the same device, so that coexistence of various sludge systems is realized, and the denitrification efficiency of the system is improved.
2. The activated sludge aerobic zone adopts a tubular microporous aerator, and has the advantages of uniform aeration, high oxygen transfer efficiency and the like.
3. The reducer jet aeration system utilizes the characteristic that the high-pressure high-speed air sweeps the membrane, can obviously improve the self-cleaning effect of the membrane, and improves the anti-pollution performance of the membrane.
Drawings
FIG. 1 is a schematic diagram of a novel high-efficiency micro-aeration MBR process device
FIG. 2 is a schematic view of the structure of an aeration branch pipe of an aeration system of a blower
In figure 1, 1-membrane pool, 2-membrane frame, 3-membrane, 4-reducing pipe jet aeration system, 5-reflux pump, 6-tubular microporous aerator, 7-self-priming pump, 8-blower, 9-dissolved air tank and 10-air compressor
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
Referring to fig. 1, in an embodiment of the present invention, a novel high-efficiency micro-aeration MBR process apparatus includes a membrane tank 1, a membrane frame 2, a membrane 3, a reducing pipe jet aeration system 4, a reflux pump 5, a tubular micro-porous aerator 6, a self-priming pump 7, an air blower 8, a dissolved air tank 9, and an air compressor 10.
The membrane tank is an MBR reaction vessel; the membrane is used for intercepting and filtering activated sludge and suspended matters in the sewage; the membrane frame is a steel structure support body fixedly provided with the membrane and integrates a gas distribution branch pipe; the self-sucking pump is used for sucking and filtering the water; the blower provides air for the system; the tubular microporous aerator is an air diffusion device fixedly arranged in the membrane tank; the reducing pipe jet aeration system has the main functions of flushing the membrane by using a high-pressure high-speed gas-water mixed beam and simultaneously oxygenating the membrane pool, so that the anti-pollution capacity of the membrane is improved; and the reflux pump pumps the mixed sewage in the MBR membrane tank to provide a water source for the reducer jet aeration system.
The membrane tank is divided into an activated sludge aeration zone and a membrane zone, wherein the activated sludge aeration zone is designed to be an aerobic zone, and the membrane zone is a micro-anoxic zone.
The activated sludge aeration zone utilizes a blower aeration system for aeration. The blast aeration system comprises a blower, a microporous aerator and a conveying pipeline. The air blower is connected with the micropore aeration through a pipeline and is conveyed to the micropore aerator in the pool at a high speed through an air conveying pipeline, and the micropore on the surface of the aerator is diffused into the biochemical pool to oxygenate the pool body.
The aeration branch pipe of the blower aeration system is designed into a ring shape.
The tubular microporous aerator is positioned at the bottom of the tank, and the installation height is more than 0.2m away from the bottom of the tank; the surface of the tubular aerator is provided with small holes of 80-100 microns, the diameter of the diffused bubbles is 0.5-5 mm, the contact area of air and sewage can be increased, the floating speed of the bubbles in water is low, and the utilization rate of oxygen can be increased; in addition, the aerator can aerate for 360 degrees, thereby avoiding the sludge accumulation at the bottom of the tank.
The membrane and the membrane frame in the membrane area are integrated into a membrane box with certain length, width and height; the installation of membrane incasement diaphragm adopts double structure, and 2 diaphragms are assembled into one row, and every row of diaphragm centre-to-centre spacing design is 90mm, both can ensure the aeration effect of every diaphragm, reduce the diaphragm and harden, but greatly reduced area again.
The membrane can be plate membrane, hollow fiber membrane, or circular tube membrane.
The membrane area is aerated by a reducing pipe jet aeration system, and the reducing pipe jet aeration system comprises an air compressor, a dissolved air tank, a reflux pump, a reducing jet pipe and a matched pipeline; compressed air discharged by an air compressor and high-pressure water flow pumped out by a reflux pump are mixed in a gas dissolving tank in a certain proportion to form gas dissolving water, the gas dissolving water is conveyed to a reducing jet pipe through a pipeline, the gas dissolving water is pressurized, accelerated and sprayed out by utilizing the special structure of a reducing pipe, the surface of an MBR membrane is flushed by utilizing high-pressure high-speed water flow, the effect of cleaning the membrane surface is achieved, and meanwhile, the membrane tank is oxygenated.
The reducing pipe jet aeration system and the membrane frame are designed in an integrated mode, the reducing pipe jet aeration system is located at a position which is 0.2-0.3 m below the membrane and 0.2m away from the bottom of the pool, a vertical installation mode is adopted, and at least 1 set of reducing jet pipes are installed on each set of membrane frame; the distance between the centers of the main pipes of the reducer jet aeration system is 0.3m, the main pipes are made of 304 stainless steel, the diameter of an inlet is 32mm, the diameter of an outlet is 12mm, and the length is 20 mm.
The water production system comprises a self-priming pump, a water production pipeline and a diaphragm; the three forms a closed passage, and self priming pump negative pressure suction diaphragm makes the sewage in the membrane cisterna see through the diaphragm surface and enters into diaphragm inner channel, and the sewage after filtration is collected to producing the water pipeline, through pipeline discharge cell body, the mud tunica is held back in the membrane cisterna.
The operation mode of the water production system is intermittent operation, the operation lasts for 13min, and the operation is stopped for 2 min.
The utility model discloses a theory of operation is:
the membrane tank 1 is divided into an activated sludge aeration zone and a membrane zone, wherein the activated sludge aeration zone is designed to be an aerobic zone, and the membrane zone is a micro-anoxic zone. Waste water gets into membrane tank 1 back, at first gets into activated sludge aeration district, then gets into the membrane district to utilize 7 negative pressure suction membrane inner space of self priming pump, make the interior sewage of membrane tank 1 permeate the membrane, filter back waste water discharge membrane tank 1. The activated sludge aeration zone utilizes an air blower aeration system to oxygenate, 8 air blowers pump indoor air and send the air into the tubular microporous aerator 6 through an air transmission pipeline, and the surface micropores of the microporous aerator diffuse into the membrane tank 1, so that sufficient oxygen is provided for the microorganisms in the activated sludge aeration zone, and the dissolved oxygen in the sewage in the zone is ensured to reach 3-5 mg/L. The membrane zone is supplied with air by means of an air compressor 10 and oxygenated by means of a reducer jet aeration system 4. Compressed air discharged by an air compressor 10 is mixed with sewage reflowed by a reflux pump 5 in a dissolved air tank 9 according to a certain proportion to form dissolved air water, the dissolved air water is sent to a reducing pipe jet aeration system 4 through a pipeline and is injected into a membrane pool 1 at a high pressure and a high speed, so that the membrane pool 1 can be flushed, the membrane pool 1 can be oxygenated and aerated, and oxygen is provided for a microorganism system in a membrane area.
Claims (6)
1. A novel high-efficiency micro-aeration MBR process device comprises a membrane pool (1), a membrane (3), a membrane frame (2), a tubular micro-aeration device (6), an air blower (8), a self-priming pump (7), a reducing pipe jet aeration system (4), a reflux pump (5), a dissolved air tank (9) and an air compressor (10); the membrane tank (1) is an MBR reaction vessel; the membrane (3) is used for intercepting and filtering activated sludge and suspended matters in the sewage; the membrane frame (2) is a steel structure support body fixedly provided with the membrane (3) and integrates a gas distribution branch pipe; the self-sucking pump (7) is used for sucking and filtering the outlet water; a blower (8) provides air for the system; the tubular microporous aerator (6) is an air diffusion device fixedly arranged in the membrane tank; the reducing pipe jet aeration system (4) has the main function of flushing the membrane (3) by utilizing a high-pressure high-speed gas-water mixed beam and simultaneously oxygenating the membrane pool (1) so as to improve the anti-pollution capacity of the membrane; the reflux pump (5) pumps the mixed sewage in the membrane tank (1) to provide a water source for the reducer jet aeration system (4).
2. The MBR process unit with high efficiency aeration according to claim 1, wherein the membrane tank (1) is divided into an activated sludge aeration zone and a membrane zone, the activated sludge aeration zone is designed as an aerobic zone, and the membrane zone is designed as a micro-anoxic zone.
3. The MBR process unit with high efficiency aeration according to claim 1, wherein the activated sludge aeration zone is aerated by a blower aeration system; a tubular microporous aerator (6) is arranged at the bottom of the tank, and the installation height is more than 0.2m away from the bottom of the tank; the surface of the tubular microporous aerator (6) is provided with small holes of 80-100 microns, the diameter of the diffused bubbles is 0.5-5 mm, the contact area of air and sewage can be increased, the floating speed of the bubbles in water is low, and the utilization rate of oxygen can be increased; in addition, the aerator can aerate for 360 degrees, thereby avoiding the sludge accumulation at the bottom of the tank.
4. The MBR process unit with high efficiency aeration according to claim 1, wherein the membrane (3) and the membrane frame (2) are integrated into a membrane box with certain length, width and height; the membrane box is characterized in that the membrane (3) is arranged in a double-row structure, 2 membranes (3) are arranged in a row, the center distance of each row of membranes (3) is designed to be 90mm, the aeration effect of each membrane (3) can be guaranteed, the hardening of the membranes (3) is reduced, and the floor area can be greatly reduced.
5. The MBR process unit with high efficiency aeration according to claim 1, wherein the membrane area is aerated by using the reducer jet aeration system (4), namely, after the reflux pump (5) pumps the mixed sewage in the membrane tank, the high pressure water and the compressed air are mixed in the dissolved air tank (9) to form dissolved air water, and the dissolved air water is sent to the reducer jet aeration system (4) to supply oxygen for the membrane tank (1); the reducing pipe jet aeration system (4) and the membrane frame (2) are integrally designed, are positioned at the position which is 0.2-0.3 m below the membrane (3) and is 0.2m away from the bottom of the pool, and adopt a vertical installation mode, and at least 1 set of reducing jet pipes are installed on each set of membrane frame (2); the reducer jet aeration system (4) mainly comprises a reflux pump (5) and a plurality of vertically-installed reducer jet pipes, the center distance of a main pipe of the reducer jet aeration system (4) is 0.3m, the reducer jet aeration system is made of 304 stainless steel materials, the inlet caliber is 32mm, the outlet caliber is 12mm, and the length is 20 mm.
6. The MBR process unit with high efficiency aeration according to claim 1, wherein the sewage entering the membrane tank (1) passes through the membrane (3) by the negative pressure suction action of the self-priming pump (7), and the sludge is trapped and discharged outwards.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114560553A (en) * | 2021-12-30 | 2022-05-31 | 扬州博依特环保科技发展有限公司 | Membrane bioreactor using membrane pool backflow as jet aeration power water flow |
| CN115893646A (en) * | 2021-08-12 | 2023-04-04 | 南京工大膜应用技术研究所有限公司 | Be applied to aeration equipment of MBR membrane |
| CN116216923A (en) * | 2023-04-12 | 2023-06-06 | 浙江天地环保科技股份有限公司 | Combined aeration system for magnetic biochemical process |
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2019
- 2019-11-11 CN CN201921931421.0U patent/CN211620064U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115893646A (en) * | 2021-08-12 | 2023-04-04 | 南京工大膜应用技术研究所有限公司 | Be applied to aeration equipment of MBR membrane |
| CN114560553A (en) * | 2021-12-30 | 2022-05-31 | 扬州博依特环保科技发展有限公司 | Membrane bioreactor using membrane pool backflow as jet aeration power water flow |
| CN116216923A (en) * | 2023-04-12 | 2023-06-06 | 浙江天地环保科技股份有限公司 | Combined aeration system for magnetic biochemical process |
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