CN114620890B - Urban sewage treatment equipment and method based on membrane bioreactor - Google Patents
Urban sewage treatment equipment and method based on membrane bioreactor Download PDFInfo
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- CN114620890B CN114620890B CN202210227190.5A CN202210227190A CN114620890B CN 114620890 B CN114620890 B CN 114620890B CN 202210227190 A CN202210227190 A CN 202210227190A CN 114620890 B CN114620890 B CN 114620890B
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- aeration
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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 application relates to town sewage treatment equipment and a method based on a membrane bioreactor, comprising a sedimentation tank and a membrane reaction tank, wherein the supernatant water outlet end of the sedimentation tank is connected with the water inlet end of the membrane reaction tank; the membrane reaction tank comprises a tank body, a multi-layer membrane reactor arranged in the inner cavity of the tank body, an aeration screen plate which is alternately stacked with the multi-layer membrane reactor and movably installed in the multi-layer membrane reactor, and an aeration system connected with the aeration screen plate, wherein the aeration screen plate is arranged in the tank body in a sliding manner, the edge of the aeration screen plate is attached to the inner wall of the tank body, and the aeration system distributes air for the aeration screen plate and the membrane reactor through a hose. According to the application, the aeration screen plates are arranged between the multi-layer membrane reactors, so that the membrane reactors can be assembled and disassembled quickly, biological membranes falling off from the membrane reactors can be blocked, the effluent clarity is ensured, meshes of the membrane reactors and the aeration screen plates can be cleaned intensively, and the membrane reactor has multiple purposes, and is simple in structure, economical and practical.
Description
Technical Field
The application belongs to the field of sewage treatment, and particularly relates to town sewage treatment equipment and method based on a membrane bioreactor.
Background
In the field of sewage treatment and water resource recycling, MBR is also called a Membrane bioreactor (Membrane Bio-Reactor), and is a novel water treatment technology which combines a Membrane separation unit and a biological treatment unit. The membrane bioreactor can retain microorganisms with longer generation period due to the effective interception function, and can realize the deep purification of sewage.
When the membrane bioreactor is used for treating sewage, the effluent often contains larger falling biological membranes, so that the effluent clarity is reduced.
Disclosure of Invention
The application aims to solve the problems and provide town sewage treatment equipment and method based on a membrane bioreactor.
The application realizes the above purpose through the following technical scheme:
the town sewage treatment equipment based on the membrane bioreactor comprises a sedimentation tank and a membrane reaction tank, wherein the supernatant water outlet end of the sedimentation tank is connected with the water inlet end of the membrane reaction tank;
the membrane reaction tank comprises a tank body, a multi-layer membrane reactor arranged in the inner cavity of the tank body, an aeration screen plate which is alternately stacked with the multi-layer membrane reactor and movably installed in the multi-layer membrane reactor, and an aeration system connected with the aeration screen plate, wherein the aeration screen plate is arranged in the tank body in a sliding manner, the edge of the aeration screen plate is attached to the inner wall of the tank body, and the aeration system distributes air for the aeration screen plate and the membrane reactor through a hose.
As a further optimization scheme of the application, the two sides of the aeration screen plate are fixedly provided with sliding plates, the inner wall of the tank body corresponding to the sliding plates is provided with sliding grooves, and the sliding grooves extend to the upper surface of the tank body to form openings.
As a further optimization scheme of the application, the aeration screen plate comprises a screen plate, clamping grooves and aerators, a plurality of membrane reactors are arranged between the upper aeration screen plate and the lower aeration screen plate side by side, the tops and the bottoms of the membrane reactors are respectively clamped into the clamping grooves on the surface of the aeration screen plate, the aerators are arranged in a frame shape and along the outer side edges of the clamping grooves, and the hose is embedded into the screen plate and connected with the aerators outside each clamping groove in series.
As a further optimization scheme of the application, the aerator comprises a connecting pipe and an aeration disc, the top of the aeration disc is connected with a hose through the connecting pipe, the aeration disc is arranged in a frame shape, the bottom end surface of the aeration disc extends to the outer side of the screen plate, and the section of the aeration disc is arranged as a convex arched surface.
As a further optimization scheme of the application, the aeration system comprises a blower, and the output end of the blower is connected with a hose.
As a further optimization scheme of the application, the outer wall of the tank body corresponding to one side of the top of each aeration screen plate and the bottom of the tank body are connected with a drain pipe, and the drain pipe is a multi-way pipe.
As a further optimization scheme of the application, the bottom of the tank body is provided with a water inlet pipe, the water inlet pipe is connected with the supernatant liquid outlet end of the sedimentation tank through a water pump, and the top of the tank body is provided with a water pumping pipe.
The method for treating town sewage by adopting the town sewage treatment equipment based on the membrane bioreactor comprises the following steps:
s1, inputting a sewage supernatant obtained by precipitation in a precipitation tank into a membrane reaction tank, and carrying out multistage purification on the sewage supernatant by a multi-layer membrane reactor in the tank, wherein an aeration screen plate filters biological membranes falling off from the membrane reactor;
s2, starting an aeration system, conveying gas to the aeration screen plate through a hose, performing aeration on the surface of the aeration screen plate and the surface of the membrane reactor, and cleaning the membrane reactor and the aeration screen plate.
The application has the beneficial effects that:
1) According to the application, the aeration screen plates are arranged between the multi-layer membrane reactors, so that the membrane reactors can be quickly installed by utilizing the aeration screen plates on one hand, and the membrane reactors can be quickly assembled and disassembled in the tank body; in the second aspect, biological membranes falling off from the membrane reactor can be blocked by the aeration screen plate, so that the influence on the clarity of effluent caused by the discharge of purified liquid is avoided; the third aspect can use the combination of the aeration screen plate and the aeration system to intensively clean the membrane reactor and discharge the biological membrane blocked in the mesh of the aeration screen plate, thereby ensuring the efficient treatment of sewage;
2) According to the application, the aeration disc is arranged in a frame shape, the section of the aeration disc is provided with the convex arched surface, when aeration is carried out, bubbles can be dispersed, the horizontally moving bubbles can clean meshes of the aeration screen plate, and the obliquely umbrella-shaped moving bubbles can clean fiber filaments of the membrane reactor;
3) The application has simple structure, various functions, greatly reduced mounting and dismounting difficulty, economy and practicability.
Drawings
Fig. 1 is a schematic view of the overall structure of the present application.
FIG. 2 is a schematic cross-sectional view of a membrane reaction tank according to the present application.
FIG. 3 is a top view of an aeration screen of the present application.
FIG. 4 is a schematic cross-sectional structure of an aeration screen according to the present application.
In the figure: 1. a sedimentation tank; 2. a membrane reaction tank; 21. a cell body; 22. a membrane reactor; 23. an aeration screen plate; 231. a screen plate; 232. a clamping groove; 233. an aerator; 2331. a connecting pipe; 2332. an aeration disc; 24. an aeration system; 3. a slide plate; 4. a chute; 5. a hose; 6. a blow-down pipe; 7. a water inlet pipe; 8. a water pumping pipe.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings, wherein it is to be understood that the following detailed description is for the purpose of further illustrating the application only and is not to be construed as limiting the scope of the application, as various insubstantial modifications and adaptations of the application to those skilled in the art can be made in light of the foregoing disclosure.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify 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 application; in the description of the present application, unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more.
Example 1
As shown in fig. 1-4, the town sewage treatment equipment based on the membrane bioreactor comprises a sedimentation tank 1 and a membrane reaction tank 2, wherein the supernatant water outlet end of the sedimentation tank 1 is connected with the water inlet end of the membrane reaction tank 2.
The membrane reaction tank 2 comprises a tank body 21, a plurality of layers of membrane reactors 22 arranged in the inner cavity of the tank body 21, an aeration screen 23 which is alternately stacked with the plurality of layers of membrane reactors 22 and movably installs the plurality of layers of membrane reactors 22 in a whole, and an aeration system 24 connected with the aeration screen 23, wherein the aeration screen 23 is arranged in the tank body 21 in a sliding manner, the edge of the aeration screen 23 is attached to the inner wall of the tank body 21, the aeration system 24 comprises an air blower, the output end of the air blower is connected with a hose 5, and the aeration system 24 distributes air to the aeration screen 23 and the membrane reactors 22 through the hose 5.
The bottom of the tank body 21 is provided with a water inlet pipe 7, the water inlet pipe 7 is connected with the supernatant water outlet end of the sedimentation tank 1 through a water pump, and the top of the tank body 21 is provided with a water pumping pipe 8.
The two sides of the aeration screen plate 23 are fixedly provided with sliding plates 3, sliding grooves 4 are formed in the inner wall of the tank body 21 corresponding to the sliding plates 3, the sliding grooves 4 extend to the upper surface of the tank body 21 to form openings, and the installation and the disassembly of the aeration screen plate 23 are rapid and convenient. The sewage drain pipes 6 are connected to the outer wall of the tank body 21 corresponding to one side of the top of each aeration screen plate 23 and the bottom of the tank body 21, and the sewage drain pipes 6 are multi-way pipes, after the membrane reaction tank 2 is used for a period of time, the sewage drain pipes 6 can be opened, and the membrane reaction tank 2 and the biological membranes attached to the aeration screen plates 23 can be cleaned by matching with the aeration system 24, so that the obtained sewage is discharged from the sewage drain pipes 6.
The aeration screen plate 23 comprises a screen plate 231, clamping grooves 232 and an aerator 233, a plurality of membrane reactors 22 are arranged between the upper aeration screen plate 23 and the lower aeration screen plate 23 side by side, the top and the bottom of each membrane reactor 22 are respectively clamped into the clamping grooves 232 on the surface of the aeration screen plate 23, the installation is quick and convenient, the aerator 233 is arranged into a frame shape and along the outer side edge of the clamping groove 232, and the hose 5 is embedded in the screen plate 231 and connected with the aerator 233 outside each clamping groove 232 in series.
The aerator 233 includes connecting pipe 2331 and aeration dish 2332, aeration dish 2332 top is connected with hose 5 through connecting pipe 2331, aeration dish 2332 sets up to frame form and bottom face extends to the otter board 231 outside, aeration dish 2332 cross-section sets up to protruding arch face, and when the aeration, the bubble can scatter around, and the mesh clearance of aeration otter board 23 can be cleared up to the bubble of horizontal migration, and the bubble of slope umbrella form removal can clear up the cellosilk of membrane reactor 22.
The method for treating town sewage by adopting the town sewage treatment equipment based on the membrane bioreactor comprises the following steps:
s1, mixing urban sewage and a flocculating agent, flocculating, inputting effluent into a sedimentation tank 1 for sedimentation, pumping supernatant of the sewage obtained by the sedimentation by a water pump, inputting the supernatant into a membrane reaction tank 2 through a water inlet pipe 7, purifying the supernatant of the sewage in multiple stages by a multi-layer membrane reactor 22 in the tank, and filtering biological membranes falling off from the membrane reactor 22 by an aeration screen 23;
s2, starting an aeration system 24, conveying air to an aeration screen 23 by an air blower through a hose 5, enabling the air to enter an aerator 233 through the hose 5, and finally discharging aeration from a frame-shaped aeration disc 2332, wherein the section of the aeration disc 2332 is provided with a convex arched surface, so that the blown-out air bubbles can blow up biological membranes in meshes of the aeration screen 23, the influence of the biological membranes on sewage treatment efficiency due to the blocking of the meshes is avoided, and the blown-out air bubbles also clean fiber filaments of the membrane reactor 22, so that the cleaning times of the membrane reactor 22 are reduced.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application.
Claims (4)
1. A town sewage treatment method based on a membrane bioreactor adopts town sewage treatment equipment based on the membrane bioreactor, and is characterized in that: the treatment equipment comprises a sedimentation tank (1) and a membrane reaction tank (2), wherein the supernatant water outlet end of the sedimentation tank (1) is connected with the water inlet end of the membrane reaction tank (2); the membrane reaction tank (2) comprises a tank body (21), a multi-layer membrane reactor (22) arranged in the inner cavity of the tank body (21), an aeration screen plate (23) which is alternately stacked with the multi-layer membrane reactor (22) and movably installs the multi-layer membrane reactor (22) into a whole, and an aeration system (24) connected with the aeration screen plate (23), wherein the aeration screen plate (23) is arranged in the tank body (21) in a sliding manner, the edge of the aeration screen plate (23) is attached to the inner wall of the tank body (21), and the aeration system (24) distributes air to the aeration screen plate (23) and the membrane reactor (22) through a hose (5);
the aeration screen plate (23) comprises a screen plate (231), clamping grooves (232) and an aerator (233), a plurality of membrane reactors (22) are arranged between the upper aeration screen plate (23) and the lower aeration screen plate (23) side by side, the tops and the bottoms of the membrane reactors (22) are respectively clamped into the clamping grooves (232) on the surface of the aeration screen plate (23), the aerator (233) is arranged in a frame shape and is arranged along the outer side edge of the clamping groove (232), and the hose (5) is embedded in the screen plate (231) and connected with the aerator (233) outside each clamping groove (232) in series;
the aerator (233) comprises a connecting pipe (2331) and an aeration disc (2332), the top of the aeration disc (2332) is connected with a hose (5) through the connecting pipe (2331), the aeration disc (2332) is arranged into a frame shape, the bottom end surface of the aeration disc extends to the outer side of the screen plate (231), and the section of the aeration disc (2332) is arranged into a convex arched surface;
a drain pipe (6) is connected to the outer wall of the tank body (21) corresponding to one side of the top of each aeration screen plate (23) and the bottom of the tank body (21), and the drain pipe (6) is a multi-way pipe;
the method comprises the following steps: s1, inputting the sewage supernatant obtained by precipitation in a precipitation tank (1) into a membrane reaction tank (2), and carrying out multistage purification on the sewage supernatant by a multi-layer membrane reactor (22) in the tank, and filtering biological membranes falling off from the membrane reactor (22) by an aeration screen (23);
s2, starting an aeration system (24), conveying gas to the aeration screen (23) through the hose (5), and performing aeration on the surface of the aeration screen (23) and the surface of the membrane reactor (22), so as to clean the membrane reactor (22) and the aeration screen (23).
2. The town sewage treatment method based on a membrane bioreactor as claimed in claim 1, wherein: the two sides of the aeration screen plate (23) are fixedly provided with sliding plates (3), sliding grooves (4) are formed in the inner walls of the tank bodies (21) corresponding to the sliding plates (3), and the sliding grooves (4) extend to the upper surfaces of the tank bodies (21) to form openings.
3. The town sewage treatment method based on a membrane bioreactor as claimed in claim 1, wherein: the aeration system (24) comprises a blower, and the output end of the blower is connected with the hose (5).
4. The town sewage treatment method based on a membrane bioreactor as claimed in claim 1, wherein: the bottom of the tank body (21) is provided with a water inlet pipe (7), the water inlet pipe (7) is connected with the supernatant liquid outlet end of the sedimentation tank (1) through a water pump, and the top of the tank body (21) is provided with a water pumping pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210227190.5A CN114620890B (en) | 2022-03-08 | 2022-03-08 | Urban sewage treatment equipment and method based on membrane bioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210227190.5A CN114620890B (en) | 2022-03-08 | 2022-03-08 | Urban sewage treatment equipment and method based on membrane bioreactor |
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| Publication Number | Publication Date |
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| CN114620890A CN114620890A (en) | 2022-06-14 |
| CN114620890B true CN114620890B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210227190.5A Active CN114620890B (en) | 2022-03-08 | 2022-03-08 | Urban sewage treatment equipment and method based on membrane bioreactor |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207121466U (en) * | 2017-07-27 | 2018-03-20 | 联合环境技术（厦门）有限公司 | A kind of MBR sewage disposal devices with multilayer aerator |
| CN211470920U (en) * | 2019-11-21 | 2020-09-11 | 青岛金海顺净水设备有限公司 | MBR membrane with continuous and continuous lining and uniform pore-forming without filament dropping |
| CN113461270A (en) * | 2021-07-20 | 2021-10-01 | 南京工大环境科技南通有限公司 | Urban sewage treatment device based on membrane bioreactor and treatment method thereof |
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