CN115010246A

CN115010246A - Integrated MBR (membrane bioreactor) self-produced water modular device with backflow and pollution discharge composite structure and integral water distribution structure

Info

Publication number: CN115010246A
Application number: CN202210728477.6A
Authority: CN
Inventors: 魏新时; 李丽萍; 沈荣新
Original assignee: Huzhou Dingtai Stencil Technology Co ltd
Current assignee: Huzhou Dingtai Stencil Technology Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-06

Abstract

The invention provides an integrated MBR (membrane bioreactor) self-produced water modular device with a backflow and pollution discharge composite structure and an integrated water distribution structure, which comprises an integrated MBR modular device, a composite structure for the backflow and pollution discharge of an MBR water treatment device and a water distribution structure for a water injection pipe of the MBR modular device. The integrated MBR modular device comprises a box body, wherein the box body is divided into a membrane module reaction chamber and an equipment chamber by a partition plate, at least more than one group of modular membrane boxes for water treatment are arranged in the membrane module reaction chamber, the composite structure of backflow and pollution discharge and the water distribution structure of a water injection pipe are arranged in the membrane module reaction chamber, and sewage to be treated is injected into the membrane module reaction chamber through the water injection pipe arranged on the side wall of the membrane module reaction chamber, so that the water level in the membrane module reaction chamber is higher than a water production pipeline and a water outlet, and a liquid level difference is formed. The invention has the advantages of small occupied area, good cleaning effect, low energy consumption, low production cost and the like.

Description

Integrated MBR (membrane bioreactor) self-produced water modular device with backflow and pollution discharge composite structure and integral water distribution structure

Technical Field

The invention relates to the field of MBR (membrane bioreactor) membrane engineering and immersed membrane engineering, in particular to an integrated MBR self-produced water modular device with a backflow and pollution discharge composite structure and an integrated water distribution structure.

Background

With the continuous promotion of the urbanization process, the discharge amount of sewage and wastewater is increasing day by day, the urban water supply industry faces serious problems and unprecedented technical challenges, and the MBR sewage treatment equipment has the advantages of low construction cost, small average water per ton floor area, high treatment efficiency and the like, and is widely applied to the treatment of sewage and wastewater.

Conventional MBR modular devices suffer from the following drawbacks: 1. when water is discharged, a suction water pump needs to be arranged outside, so that the energy consumption is high and the operation cost is high; 2. as the MBR modular device of the conventional membrane only adopts the return pipe provided with the return port and the straight line, the sewage concentration difference degree of different areas in the membrane tank is larger when the sewage flows back, and the sewage concentration in the membrane tank cannot be stably regulated and controlled; 3. a water injection pipe of the conventional MBR modular device extends into the bottom of the liquid level, and external defoaming equipment is needed when defoaming is carried out on the liquid level; 4. because the difference of the materials, the design forms and the aeration modes of the membrane components leads to different corresponding configuration equipment, the installation efficiency and the production cost of the device are influenced, and the occupied area of the device is larger; 5. when the membrane component is maintained and cleaned, the membrane component still needs to be cleaned manually, so that the cleaning effect cannot be ensured, and the normal operation of the membrane is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an integrated MBR (membrane bioreactor) self-produced water modular device with a backflow and pollution discharge composite structure and an integer water distribution structure, and solves the problems in the background technology.

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the utility model provides an integrated form MBR modular device, includes the box, will through the division board the box divides into membrane module reaction chamber and equipment cavity, be provided with the modular membrane case that is used for water treatment more than a set of at least in the membrane module reaction chamber, the water injection pipe has been seted up on the lateral wall of membrane module reaction chamber, set up the delivery port that is linked together with the outside on the lateral wall of equipment cavity, modular membrane roof portion is provided with the product water pipeline, product water pipeline extension end passes the division board with the delivery port is linked together, the orificial height of water injection pipe is higher than product water pipeline, through the water injection pipe to the sewage of pending processing is poured into to the membrane module reaction chamber, makes water level in the membrane module reaction chamber is higher than product water pipeline and delivery port, forms the liquid level difference.

Preferably, the water production pipeline comprises a plurality of water production branch pipelines and a main water production pipeline arranged below the water production branch pipelines, each water production branch pipeline comprises a horizontal transition section and a vertical section, one end of each horizontal transition section is communicated with the top of the modular membrane box, the other end of each horizontal transition section penetrates through the partition plate to be communicated with the top end of the corresponding vertical section, the bottom end of each vertical section is communicated with the corresponding main water production pipeline, and the water outlet end of each main water production pipeline is connected with the water outlet.

Preferably, be provided with automatic membrane device of washing in the equipment cavity, automatic membrane device of washing includes liquid medicine case and medicament pump, the liquid medicine case through advance the medicine pipeline with one side port of medicament pump is linked together, it is equipped with the third valve that is used for the control circuit switching to advance on the medicine pipeline, another side port of medicament pump pass through infusion pipeline with the modularization membrane case is linked together, be used for the first valve and the second valve of each section switching of control circuit on the infusion pipeline.

Preferably, an aeration component is further arranged in the equipment chamber, the aeration component comprises a fan and an aeration pipeline which are positioned outside the equipment chamber, one end of the aeration pipeline is connected with the fan, the other end of the aeration pipeline extends out of a plurality of aeration branch pipelines, and the extending ends of the aeration branch pipelines penetrate through the partition plates and extend to a position below the liquid level in the membrane component reaction chamber.

The utility model provides a composite construction that is used for backward flow of MBR modular device and blowdown, is including the backward flow adjusting part who is used for the inside sewage concentration of even regulation and control membrane tank, backward flow adjusting part sets up the bottom at the membrane tank.

Preferably, the backflow adjusting assembly comprises a backflow adjusting and controlling pipeline for playing a backflow role and a pollution discharge adjusting and controlling pipeline for playing a pollution discharge role, and the backflow adjusting and controlling pipeline is located above the pollution discharge adjusting and controlling pipeline.

Preferably, the backflow regulating and controlling pipeline and the pollution discharge regulating and controlling pipeline comprise a main regulating and controlling pipe and a plurality of branch pipes communicated with the main regulating and controlling pipe.

The utility model provides a water distribution structure for MBR modular unit water injection pipe, is including the water distribution pipeline that is used for carrying out the uniform water distribution in the membrane cisterna, the water distribution pipeline sets up the top at the membrane cisterna, the water distribution pipeline divide into main extension pipe and evenly distributed and is in main extension pipe both sides and with the branch water injection pipe that main extension pipe is linked together.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the modular membrane box is connected with the water outlet through the water production pipe, the modular membrane box is arranged above the water outlet, most pipelines of the water production pipe are vertically arranged, unpowered operation is realized under the action of gravity to produce water by utilizing high and low liquid level differences, and the energy consumption and the occupied area of a water production pump and the cost brought by civil construction are saved.

2. The invention adopts a backflow regulating component with an upper layer and a lower layer, wherein the upper layer is used for backflow, the lower layer is used for discharging mud, and the discharge capacity of sewage in the membrane component reaction chamber can be adjusted by controlling the opening and closing of the two layers of pipelines according to the condition of the water level in the membrane component reaction chamber; and the return pipeline on the upper layer adopts a multipoint return mode, so that the return uniformity in the membrane component reaction chamber is ensured, and the sludge discharge pipeline on the lower layer adopts a multipoint sludge collection discharge mode, so that the sewage concentration in the membrane component reaction chamber is ensured to be within a controllable range.

3. The water distribution structure arranged on the water injection pipe can uniformly distribute water in the membrane component reaction chamber and simultaneously play a role in defoaming the liquid level in the membrane component reaction chamber.

4. The membrane assembly is provided with equipment rooms by adopting a modular structure, so that the construction of the equipment rooms is saved, and meanwhile, the cost of pipeline connection, joints, valves and the like between the equipment rooms and the membrane pool in the past is saved due to the equipment rooms; and the distance of the connecting pipeline is shortened, which is beneficial to further reducing the use energy consumption of the equipment.

5. The connecting structure of the automatic membrane washing device and the internal pipeline can realize full-automatic membrane washing without external washing equipment, and has better washing effect and higher washing efficiency compared with the traditional manual washing.

Drawings

FIG. 1 is a schematic view of the internal rear side structure of the present invention;

FIG. 2 is a schematic view of the internal front side structure of the present invention;

FIG. 3 is a schematic view of the piping connection structure of the present invention;

FIG. 4 is a cross-sectional structural view of the present invention;

FIG. 5 is a longitudinal cross-sectional structural schematic of the present invention;

FIG. 6 is a schematic view of a reflow soldering assembly of the present invention;

FIG. 7 is a schematic view of the water distribution pipeline according to the present invention;

fig. 8 is an external structural view of the present invention.

In the figure: 1-box body, 11-reaction chamber, 12-equipment chamber, 13-water outlet, 14-box door, 15-movable door plate, 16-partition plate, 17-water injection pipe, 18-limit overflow pipe orifice, 2-modular membrane box, 21-membrane stack, 22-water production pipeline, 221-water production branch pipeline, 222-main water production pipeline, 223-horizontal transition section, 224-vertical section, 3-automatic membrane washing device, 31-chemical washing water box, 311-high liquid level inlet, 312-low liquid level outlet, 32-liquid medicine box, 33-medicine pump, 34-medicine inlet pipeline, 341-third valve, 35-liquid conveying pipeline, 351-first valve, 352-second valve, 36-liquid inlet branch pipeline, 361-fourth valve, 37-a liquid outlet branch pipeline, 371-a fifth valve, 38-a liquid suction pipeline, 381-a sixth valve, 39-an overflow pipeline, 4-an aeration component, 41-a fan, 42-an aeration pipeline, 43-an aeration branch pipeline, 5-a backflow regulating component, 51-a backflow regulating and controlling pipeline, 52-a pollution discharge regulating and controlling pipeline, 53-a main regulating and controlling pipeline, 531-a water outlet, 54-a branch pipeline, 541-a water inlet, 6-a water distribution pipeline, 61-a main extension pipe, 611-a water inlet port, 62-a branch water injection pipe and 621-a water injection port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-8, the present invention provides an embodiment: an integrated MBR modular device comprises a box body 1, the box body 1 is divided into a membrane component reaction chamber 11 and an equipment chamber 12 by a partition plate 16, a plurality of modular membrane boxes 2 are arranged in the membrane component reaction chamber 11, a water injection pipe 17 is arranged on the side wall, an automatic membrane washing device 3 and an aeration component 4 are arranged in the equipment chamber 12, a water outlet 13 communicated with the outside is arranged at the bottom of the side wall, the water outlet 13 is positioned below the horizontal plane at the bottom of the modular membrane boxes 2, a plurality of stacked membrane stacks 21 are arranged in the modular membrane boxes 2, a water production pipeline 22 is arranged at the top of the modular membrane boxes 2, the extending end of the water production pipeline 22 passes through the partition plate 16 and is communicated with the water outlet 13, the height of the orifice of the water injection pipe 17 is higher than the water production pipeline 22, water is injected into the membrane component reaction chamber 11 through the water injection pipe 17, so that the water level in the membrane component reaction chamber 11 is higher than the water production pipeline 22 and the water outlet 13, the liquid level difference is formed, water is produced by utilizing the liquid level difference between the top of the water production pipeline 22 and the water outlet 13, and the water treated in the modular membrane tank 2 flows to the outside of the tank body 1 through the water production pipeline 22.

The water production pipeline 22 comprises a plurality of water production branch pipelines 221 and a main water production pipeline 222 arranged below the water production branch pipelines 221, each water production branch pipeline 221 comprises a horizontal transition section 223 and a vertical section 224, one end of each horizontal transition section 223 is communicated with the top of the modular membrane box 2, the other end of each horizontal transition section 223 penetrates through the partition plate 16 to be communicated with the top end of the vertical section 224, the bottom end of the vertical section 224 is communicated with the main water production pipeline 222, the water outlet end of the main water production pipeline 222 is connected with the water outlet 13, produced water processed in the modular membrane box 2 can sequentially pass through the horizontal transition sections 223, the vertical sections 224 and the main water production pipeline 222 under the hydraulic action, and the produced water flows to the outside of the box body 1 from the water outlet 13 to be collected.

A composite structure for backflow and pollution discharge of an MBR modular device comprises a backflow regulating component 5 which is arranged at the bottom of a membrane component reaction chamber 11 and is used for uniformly regulating and controlling the concentration of internal sewage, a backflow regulating component 5 is arranged at the bottom of the membrane component reaction chamber 11, the backflow regulating component 5 comprises a backflow regulating pipeline 51 which plays a backflow role and a pollution discharge regulating pipeline 52 which plays a pollution discharge role, the backflow regulating pipeline 51 is positioned above the pollution discharge regulating pipeline 52, the backflow regulating pipeline 51 and the pollution discharge regulating pipeline 52 are uniformly divided into a main regulating pipe 53 which is communicated with the outside of a box body 1 and a plurality of branch pipes 54 which are communicated with the main regulating pipe 53, one end of the main regulating pipe 53, which is deviated from a water outlet 531, extends to a position which is adjacent to the side wall of the membrane component reaction chamber 11, and the branch pipes 54 are uniformly arranged at two sides of the main regulating pipe 53, and one end of the water inlet 541 of the branched pipe 54 extends to a position adjacent to the side wall of the membrane module reaction chamber 11. The regulating and controlling pipeline 51 positioned at the upper layer is used for backflow, the regulating and controlling pipeline 51 positioned at the lower layer is used for sludge discharge, and the discharge capacity of sewage in the membrane module reaction chamber 11 can be adjusted by controlling the opening and closing of the two layers of pipelines according to the condition of the water level of the membrane module reaction chamber 11; and the return line on the upper layer adopts a multipoint return mode, so that the return uniformity of the 11 in the membrane module reaction chamber is ensured, and the sludge discharge line on the lower layer adopts a multipoint sludge collection discharge mode, so that the sewage concentration in the membrane module reaction chamber 11 is ensured to be within a controllable range.

A water distribution structure for a water injection pipe of an MBR (membrane bioreactor) modular device comprises a water distribution pipeline 6 for uniformly distributing water in a membrane module reaction chamber 11, wherein the water distribution pipeline 6 is arranged above a limiting overflow pipe orifice 18 in the membrane module reaction chamber 11 of a membrane pool, and the water distribution pipeline 6 is divided into a main extension pipe 61 and branch water injection pipes 62 which are uniformly distributed on two sides of the main extension pipe 61 and communicated with the main extension pipe 61; the water inlet port 611 of the main extension pipe 61 is communicated with the water injection pipe 17, and one end of the main extension pipe 61, which is far away from the water inlet port 611, extends to a position close to the side wall of the membrane module reaction chamber 11, and one end of the branch water injection pipe 62, which is far away from the main extension pipe 61, is provided with a water injection port 621. Through the water distribution structure that water injection pipe 17 department set up, can carry out the uniform water distribution in membrane module reaction chamber 11, to the defoaming effect that plays of membrane module reaction chamber 11 internal liquid level.

The automatic membrane washing device 3 comprises a liquid medicine box 32 and a medicine pump 33, the liquid medicine box 32 is communicated with one side port of the medicine pump 33 through a medicine inlet pipeline 34, a third valve 341 for controlling the opening and closing of the pipeline is arranged on the medicine inlet pipeline 34, the other side port of the medicine pump 33 is communicated with the modular membrane box 2 through a liquid conveying pipeline 35, and a first valve 351 and a second valve 352 for controlling the opening and closing of each section of the pipeline are arranged on the liquid conveying pipeline 35.

The automatic membrane washing device 3 further comprises a chemical cleaning water tank 31, a high liquid level inlet 311 and a low liquid level outlet 312 are formed in the chemical cleaning water tank 31, the high liquid level inlet 311 is communicated with a pipeline section of the infusion pipeline 35 between the medicament pump 33 and the second valve 342 through a liquid inlet branch pipeline 36, and the low liquid level inlet 312 is communicated with a pipeline section of the medicament inlet pipeline 34 between the medicament pump 33 and the third valve 351 through a liquid outlet branch pipeline 37.

The liquid inlet branch line 36 is provided with a fourth valve 361 for controlling the opening and closing of the line, and the liquid outlet branch line 37 is provided with a fifth valve 371 for controlling the opening and closing of the line.

The pipeline section of the infusion pipeline 35 between the first valve 351 and the second valve 352 is communicated with the pipeline section of the medicine inlet pipeline 34 between the medicine pump 33 and the liquid outlet branch pipeline 37 through the liquid suction pipeline 38, and the liquid suction pipeline 38 is provided with a sixth valve 381 for controlling the opening and closing of the pipeline.

The full-automatic cleaning function of the membrane stack 21 in the modular membrane box 2 can be realized through the connecting structure of the automatic membrane cleaning device 3 and the internal pipeline.

The membrane module reaction chamber 11 is communicated with the chemical cleaning water tank 31 through an overflow pipeline 39, and a safety valve for controlling opening and closing is arranged on the overflow pipeline 39, so that when the safety valve is opened, redundant liquid medicine can overflow back to the chemical cleaning water tank 31, and the liquid medicine cost is effectively saved.

The aeration component 4 comprises a fan 41 and an aeration pipeline 42 which are positioned at the bottom of the equipment chamber 12, one end of the aeration pipeline 42 is connected with the fan 41, the other end extends out of a plurality of aeration branch pipelines 43, the extending ends of the aeration branch pipelines 43 pass through the partition plate 16 and extend to the position under the liquid level in the membrane component reaction chamber 11, the fan 41 aerates the liquid in the membrane component reaction chamber 11 through the aeration pipeline 42 and the aeration branch pipelines 43, oxygen can be generated and promoted to be effectively contacted with water in the membrane component reaction chamber 11 in the water treatment process, oxygen is provided under the condition that the biological oxidation continuously consumes the oxygen, a certain dissolved oxygen concentration in the water is maintained, and the circulating flow of the water is promoted.

A limiting overflow pipe orifice 18 is arranged on one side of the membrane component reaction chamber 11, which is positioned on the water injection pipe 17, and the limiting overflow pipe orifice 18 is positioned above the horizontal transition section 223; an openable and closable box door 14 is arranged on one side of the outer part of the box body 1, and an openable and closable movable door plate 15 is arranged in the center of the top of the box body 1, so that the regular maintenance or repair of the interior of the box body 1 is facilitated.

The invention implements low-pressure operation and light-pollution cleaning in the water treatment process, and can effectively ensure the water yield of the membrane.

And (3) washing the membrane:

the method comprises the following steps: firstly, closing a safety valve of the water production pipeline 22, opening a third valve 341 and a fourth valve 361 (at the moment, the first valve 351, the second valve 352, the fifth valve 371 and the sixth valve 381 are all in a closed state), and starting a medicament pump 33 to pump the original liquid medicament into the chemical cleaning water tank 31 from the medicament liquid tank 32 for mixing;

step two: after the mixing, the third valve 341 and the fourth valve 361 are closed, the first valve 351, the second valve 352 and the fifth valve 371 are opened, the chemical pump 33 is started again to pump the mixed chemical liquid into the membrane module reaction chamber 11 where the modular membrane box 2 is located (the liquid level of the chemical liquid should be higher than that of the modular membrane box 2), and then the blower 41 is started to aerate the liquid in the membrane module reaction chamber 11 through the aeration pipeline 42 and the aeration branch pipeline 43, so that the chemical liquid is uniformly dispersed in the membrane module reaction chamber 11;

step three: closing the second valve 352 and the fifth valve 371, opening the fourth valve 361 and the sixth valve 381, starting the chemical pump 33 again, and pumping part of the chemical liquid in the membrane module reaction chamber 11 into the chemical cleaning water tank 31 again after flowing through the modular membrane tank 2;

step four: and (4) repeating the step two and the step three for 2-3 times, repeatedly washing the modular membrane box 2 by using the liquid medicine, discharging the liquid medicine from a water outlet in the side wall of the membrane module reaction chamber 11 after membrane washing is finished, and adding clear water through a water injection pipe 17 for cleaning.

The embodiments of the present invention have been described in detail, but the embodiments of the present invention are not limited to the above-described ones, and any equivalent substitutions and equivalent changes to the above-described embodiments are within the scope of the present invention.

Claims

1. An integrated MBR modular device, which is characterized in that: comprises a box body (1), the box body (1) is divided into a membrane component reaction chamber (11) and an equipment chamber (12) by a partition plate (16), at least more than one group of modularized membrane boxes (2) for water treatment are arranged in the membrane component reaction chamber (11), a water injection pipe (17) is arranged on the side wall of the membrane component reaction chamber (11), a water outlet (13) communicated with the outside is arranged on the side wall of the equipment chamber (12), a water production pipeline (22) is arranged at the top of the modularized membrane box (2), the extension end of the water production pipeline (22) penetrates through the partition plate (16) and is communicated with the water outlet (13), the height of the orifice of the water injection pipe (17) is higher than the water production pipeline (22), sewage to be treated is injected into the membrane component reaction chamber (11) through the water injection pipe (17), so that the water level in the membrane component reaction chamber (11) is higher than the water production pipeline (22) and the water outlet (13), a liquid level difference is formed.

2. The integrated MBR modular device of claim 1, wherein: the water production pipeline (22) comprises a plurality of water production branch pipelines (221) and a main water production pipeline (222) arranged below the water production branch pipelines (221), each water production branch pipeline (221) comprises a horizontal transition section (223) and a vertical section (224), one end of each horizontal transition section (223) is communicated with the top of the modular membrane box (2), the other end of each horizontal transition section (223) penetrates through the separation plate (16) and is communicated with the top end of the vertical section (224), the bottom end of the vertical section (224) is communicated with the main water production pipeline (222), and the water outlet end of the main water production pipeline (222) is connected with the water outlet (13).

3. The integrated MBR modular device of claim 1, wherein: be provided with automatic membrane device (3) of washing in equipment cavity (12), automatic membrane device (3) of washing includes liquid medicine case (32) and medicament pump (33), liquid medicine case (32) through advance medicine pipeline (34) with one side port of medicament pump (33) is linked together, it is equipped with third valve (341) that are used for the control tube way switching to advance on medicine pipeline (34), medicament pump (33) another side port pass through infusion pipeline (35) with modularization membrane case (2) are linked together, be used for first valve (351) and second valve (352) of each section switching of control tube way on infusion pipeline (35).

4. The integrated MBR modular device of claim 1, wherein: an aeration component (4) is further arranged in the equipment chamber (12), the aeration component (4) comprises a fan (41) and an aeration pipeline (42) which are located outside the equipment chamber (12), one end of the aeration pipeline (42) is connected with the fan (41), a plurality of aeration branch pipelines (43) extend from the other end of the aeration pipeline, and the extending ends of the aeration branch pipelines (43) penetrate through the partition plates (16) and extend to the position below the liquid level in the membrane component reaction chamber (11).

5. The utility model provides a composite construction that is used for MBR modular device backward flow to hold concurrently blowdown which characterized in that: including being used for evenly regulating and controlling inside sewage concentration's of membrane tank backflow adjusting part (5), backflow adjusting part (5) set up the bottom at the membrane tank.

6. The composite structure for MBR modular unit backflow and blowdown of claim 5, wherein: the backflow adjusting assembly (5) comprises a backflow adjusting and controlling pipeline (51) and a pollution discharge adjusting and controlling pipeline (52), wherein the backflow adjusting and controlling pipeline (51) is used for playing a backflow role, the pollution discharge adjusting and controlling pipeline (52) is used for playing a pollution discharge role, and the backflow adjusting and controlling pipeline (51) is located above the pollution discharge adjusting and controlling pipeline (52).

7. The composite structure for MBR modular unit backflow and blowdown of claim 6, wherein: the backflow regulating and controlling pipeline (51) and the pollution discharge regulating and controlling pipeline (52) respectively comprise a main regulating and controlling pipe (53) and a plurality of branch pipes (54) communicated with the main regulating and controlling pipe (53).

8. The utility model provides a water distribution structure for MBR modular unit water injection pipe which characterized in that: the membrane pool water distribution device comprises a water distribution pipeline (6) used for uniformly distributing water in a membrane pool, wherein the water distribution pipeline (6) is arranged above the membrane pool, and the water distribution pipeline (6) is divided into a main extension pipe (61) and branch water injection pipes (62) which are uniformly distributed on two sides of the main extension pipe (61) and communicated with the main extension pipe (61).

9. The utility model provides an integrated form MBR is from producing water modular device with return flow and blowdown composite construction and integer water distribution structure which characterized in that: comprising an integrated MBR modular device according to any one of claims 1-4, a composite structure for return and blowdown of an MBR modular device according to any one of claims 5-7, and a water distribution structure for water injection pipes of an MBR modular device according to claim 8.