A modular MBR membrane separation device

Abstract

This utility model relates to a modular MBR membrane separation device, including a frame, multiple MBR membrane modules, an aeration pipe assembly, a bidirectional water flow pipe assembly, and a vacuum pipe assembly. A partition is installed within the frame, dividing the space into a first zone and a second zone. Multiple MBR membrane modules are arranged side-by-side in the first zone, while the aeration pipe assembly, vacuum pipe assembly, and bidirectional water flow pipe assembly are located in the second zone. The aeration pipe assembly connects to the aeration port of each MBR membrane module. The bidirectional water flow pipe assembly connects to the water inlet of each MBR membrane module, allowing the filtered wastewater to flow into a wastewater tank. When an MBR membrane module becomes clogged, it can be backwashed through the bidirectional water flow pipe assembly. The vacuum pipe assembly connects to the MBR membrane modules via the bidirectional water flow pipe assembly, ensuring negative pressure operation of the MBR membrane modules. Its advantages include significantly shortening construction time, substantially reducing floor space, and facilitating installation and subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a modular MBR membrane separation device. Background Technology

[0002] With the increasing severity of water scarcity, the importance of wastewater treatment and reuse technologies is becoming increasingly prominent. In terms of wastewater treatment processes, traditional methods often employ a combination of secondary sedimentation tanks and advanced treatment, but this approach suffers from numerous equipment and complex processes. In contrast, MBR (Membrane Bioreactor) technology, with its high-efficiency solid-liquid separation capabilities, superior effluent quality, and smaller footprint, has become a viable alternative to the secondary sedimentation tank-based advanced treatment method, significantly reducing the number of process equipment and optimizing the treatment process. However, traditional MBR devices have revealed numerous problems during actual operation, necessitating improvement and innovation.

[0003] Currently, traditional MBR membrane tanks mostly adopt a concrete tank structure, which has a lengthy construction cycle. From foundation construction to final commissioning, it takes a lot of time, making it difficult to quickly meet the current urgent needs for wastewater treatment. Moreover, concrete tank structures occupy a large area and have high construction costs. In the context of rapid urbanization, especially in first-tier cities where land resources are extremely scarce, there is almost no land available for the expansion or construction of new wastewater treatment plants. Furthermore, traditional wastewater treatment plant MBR membrane tanks cause significant air pollution, emitting large amounts of odorous gases such as hydrogen sulfide and ammonia during operation, which pollutes the atmosphere and is detrimental to environmental protection. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular MBR membrane separation device, which solves the technical problems of long construction cycle and large land area of ​​the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] This utility model provides a modular MBR membrane separation device, including a frame, multiple MBR membrane modules, an aeration pipe assembly, a bidirectional water flow pipe assembly, and a vacuum pipe assembly. A partition is installed within the frame, dividing the space into a first zone and a second zone. Multiple MBR membrane modules are arranged side-by-side in the first zone, while the aeration pipe assembly, vacuum pipe assembly, and bidirectional water flow pipe assembly are located in the second zone. The aeration pipe assembly connects to the aeration port of each MBR membrane module. The bidirectional water flow pipe assembly connects to the water inlet of each MBR membrane module, allowing the treated wastewater obtained after filtration by the MBR membrane modules to flow into a treated wastewater tank via the bidirectional water flow pipe assembly. When the MBR membrane modules become clogged, they can be backwashed through the bidirectional water flow pipe assembly. The vacuum pipe assembly connects to the MBR membrane modules via the bidirectional water flow pipe assembly, ensuring that the MBR membrane modules can operate under negative pressure.

[0009] Optionally, the bidirectional water flow pipe group includes a main water flow pipe and multiple water flow branch pipes; the main water flow pipe is connected to the water inlets of multiple MBR membrane modules through the multiple water flow branch pipes in a one-to-one correspondence; the vacuum pipe group is connected to each water flow branch pipe.

[0010] Optionally, each water flow branch is equipped with a water flow valve, an airtightness detection pipe, and a negative pressure gauge installation pipe.

[0011] Optionally, the vacuum tube assembly includes a constant-temperature tank, a main vacuum tube, and multiple vacuum branch tubes; the constant-temperature tank is mounted on the frame, the outlet of the main vacuum tube is connected to the constant-temperature tank, and the main vacuum tube is connected to multiple water flow branch tubes one-to-one through the multiple vacuum branch tubes.

[0012] Optionally, a vacuum control valve is installed on the vacuum branch pipe.

[0013] Optionally, the aeration pipe group includes an aeration main pipe and multiple aeration branch pipes; the aeration main pipe is connected to the aeration ports of multiple MBR membrane modules through the multiple aeration branch pipes in a one-to-one correspondence.

[0014] Optionally, an aeration valve may be installed on the aeration branch pipe.

[0015] Optionally, a cover plate is provided at the top of the first zone to form a sealed space for the cavity in the first zone through the cover plate and the partition plate.

[0016] Optionally, an odor collection pipe is installed in the first zone; a sludge return pipe is installed at the bottom of the frame, with the inlet of the sludge return pipe connected to the sludge outlet of the first zone and the outlet of the sludge return pipe connected to the sludge tank.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a modular MBR membrane separation device that integrates multiple MBR membrane modules, aeration pipe groups, bidirectional water flow pipe groups, and vacuum pipe groups within a frame, forming a highly integrated wastewater treatment system. The integrated design makes the overall operation of the equipment more coordinated, enhances the collaborative working ability between components, and improves the adaptability and stability of wastewater treatment. The MBR membrane modules, aeration pipe groups, bidirectional water flow pipe groups, and vacuum pipe groups can all be prefabricated in the factory and then transported to the site for assembly, greatly shortening construction time. The device adopts a frame structure, and the space is divided into a first zone and a second zone by partitions. Multiple MBR membrane modules are arranged side-by-side in the first zone, while the aeration pipe groups, vacuum pipe groups, and bidirectional water flow pipe groups are placed in the second zone. This zoned layout greatly improves space utilization efficiency, significantly reducing the footprint and facilitating installation and maintenance. The aeration pipe groups connect to the aeration ports of each MBR membrane module, providing uniform and sufficient oxygen to the microorganisms within the MBR membrane module. The bidirectional water flow pipe groups have a dual function. On the one hand, the treated water filtered by the MBR membrane module can flow into the treated water tank, achieving efficient collection and reuse of the treated water. On the other hand, when the MBR membrane module becomes clogged, it can be backwashed through the bidirectional water flow pipe assembly to restore the MBR membrane flux and ensure long-term stable operation. The vacuum pipe assembly is connected to the MBR membrane module through the bidirectional water flow pipe assembly, ensuring that the MBR membrane module operates under a stable negative pressure. A stable negative pressure operating environment is not only one of the key conditions for the MBR membrane to achieve efficient filtration, but also plays an important role in environmental protection. A negative pressure operating environment can effectively prevent the exhaust gas generated during wastewater treatment from escaping into the surrounding atmosphere, protecting the surrounding environment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a modular MBR membrane separation device in Embodiment 1 of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a front view schematic diagram of a modular MBR membrane separation device according to Embodiment 1 of this utility model;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 This is a top view schematic diagram of a modular MBR membrane separation device according to Embodiment 1 of this utility model;

[0025] Figure 6This is a bottom view schematic diagram of a modular MBR membrane separation device according to Embodiment 1 of this utility model;

[0026] Figure 7 This is a left-side schematic diagram of a modular MBR membrane separation device according to Embodiment 1 of this utility model;

[0027] Figure 8 This is a right-side schematic diagram of a modular MBR membrane separation device according to Embodiment 1 of this utility model.

[0028] [Explanation of Labels in the Attached Image]

[0029] 1: Frame; 11: Partition; 12: Odor collection pipe; 13: Sludge return pipe; 14: Overflow pipe;

[0030] 2: MBR membrane module;

[0031] 31: Main water pipe; 32: Branch water pipe; 33: Water valve; 34: Air tightness test pipe; 35: Negative pressure gauge installation pipe;

[0032] 41: Constant suction tank; 42: Main vacuum pipe; 43: Branch vacuum pipe; 44: Vacuum control valve;

[0033] 51: Aeration main pipe; 52: Aeration branch pipe; 53: Aeration valve. Detailed Implementation

[0034] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0035] Example 1:

[0036] like Figure 1 and Figure 2As shown, this embodiment provides a modular MBR membrane separation device, including a frame 1, multiple MBR membrane modules 2, an aeration pipe group, a bidirectional water flow pipe group, and a vacuum pipe group. A partition 11 is provided within the frame 1, dividing the space within the frame 1 into a first zone and a second zone. Multiple MBR membrane modules 2 are arranged side-by-side in the first zone, while the aeration pipe group, vacuum pipe group, and bidirectional water flow pipe group are located in the second zone. The aeration pipe group connects to the aeration port of each MBR membrane module 2. The bidirectional water flow pipe group connects to the water inlet of each MBR membrane module 2, allowing the treated water obtained after filtration by the MBR membrane modules 2 to flow into a treated water tank via the bidirectional water flow pipe group. When the MBR membrane module 2 becomes clogged, it can be backwashed through the bidirectional water flow pipe group. The vacuum pipe group connects to the MBR membrane module 2 via the bidirectional water flow pipe group, ensuring that the MBR membrane module 2 can operate under negative pressure.

[0037] Specifically, multiple MBR membrane modules 2, aeration pipe groups, bidirectional water flow pipe groups, and vacuum pipe groups are integrated within frame 1, forming a highly integrated wastewater treatment system. This integrated design makes the overall operation of the equipment more coordinated, enhances the collaborative working ability between components, and improves the adaptability and stability of wastewater treatment. The MBR membrane modules 2, aeration pipe groups, bidirectional water flow pipe groups, and vacuum pipe groups can all be prefabricated in the factory and then transported to the site for assembly, significantly shortening construction time. The device adopts a frame structure, and the space is divided into a first zone and a second zone by partition 11. Multiple MBR membrane modules 2 are arranged side-by-side in the first zone, while the aeration pipe groups, vacuum pipe groups, and bidirectional water flow pipe groups are placed in the second zone. This zoned layout greatly improves space utilization efficiency, significantly reducing the floor space required and facilitating installation and maintenance. The aeration pipe groups connect to the aeration ports of each MBR membrane module 2, providing uniform and sufficient oxygen to the microorganisms within the MBR membrane module 2. The bidirectional water flow pipe groups have a dual function. On the one hand, the treated water filtered by MBR membrane module 2 can flow into the treated water tank, achieving efficient collection and reuse of treated water. On the other hand, when MBR membrane module 2 becomes clogged, it can be backwashed through the bidirectional water flow pipe assembly to restore the MBR membrane flux and ensure long-term stable operation. The vacuum pipe assembly is connected to MBR membrane module 2 through the bidirectional water flow pipe assembly, ensuring that MBR membrane module 2 operates under a stable negative pressure. A stable negative pressure operating environment is not only one of the key conditions for MBR membranes to achieve efficient filtration, but also plays an important role in environmental protection. A negative pressure operating environment can effectively prevent the exhaust gas generated during wastewater treatment from escaping into the surrounding atmosphere, protecting the surrounding environment.

[0038] Further, as shown in the figure, the bidirectional water flow pipe assembly includes a main water flow pipe 31 and multiple branch water flow pipes 32. The main water flow pipe 31 is connected to the water inlets of multiple MBR membrane modules 2 through the multiple branch water flow pipes 32 in a one-to-one correspondence. The vacuum pipe assembly is connected to each branch water flow pipe 32. This achieves efficient water flow distribution, allowing wastewater entering the device to flow evenly into each MBR membrane module 2, ensuring that each MBR membrane module 2 can fully exert its filtration function and improving the overall wastewater treatment efficiency of the device. It also facilitates individual control and monitoring of the water flow in each MBR membrane module 2, and if a problem occurs in a membrane module 2, it can be easily troubleshooted and handled. The vacuum pipe assembly is connected to each branch water flow pipe 32, ensuring that each MBR membrane module 2 can operate in a stable negative pressure environment.

[0039] Furthermore, as shown in the figure, each water flow branch pipe 32 is equipped with a water flow valve 33, an airtightness detection pipe 34, and a negative pressure gauge installation pipe 35. A negative pressure gauge is installed at the end of the negative pressure installation pipe. By adjusting the water flow valve 33, the flow rate and velocity of the water entering each MBR membrane module 2 can be controlled. Under different wastewater treatment conditions, the water flow parameters can be flexibly adjusted according to actual needs to achieve the best treatment effect. The airtightness detection pipe 34 facilitates the detection of the airtightness of the water flow branch pipe 32 and the MBR membrane module 2. During the operation of the device, regular checks through the airtightness detection pipe 34 can promptly detect any air leaks, ensuring the sealing of the device, preventing wastewater leakage and exhaust gas escape, and improving the operational safety and environmental friendliness of the device. The negative pressure gauge can monitor the negative pressure of each MBR membrane module 2 in real time. Operators can adjust the working status of the vacuum tube group in a timely manner according to the reading of the negative pressure gauge to ensure that the MBR membrane module 2 always operates in a suitable negative pressure environment, ensuring the filtration effect and membrane lifespan.

[0040] Further, as shown in the figure, the vacuum assembly includes a constant pressure tank 41, a main vacuum pipe 42, and multiple vacuum branch pipes 43. The constant pressure tank 41 is mounted on the frame 1, and the outlet of the main vacuum pipe 42 is connected to the constant pressure tank 41. The main vacuum pipe 42 is connected to multiple water flow branch pipes 32 through the multiple vacuum branch pipes 43. The constant pressure tank 41 acts as a buffer and stabilizes the pressure, preventing drastic pressure fluctuations during the vacuuming process and ensuring the stable operation of the vacuum system. Simultaneously, the main vacuum pipe 42, through the multiple vacuum branch pipes 43, connects to the multiple water flow branch pipes 32, allowing the negative pressure to be evenly distributed to each MBR membrane module 2, improving the overall performance of the device. In this embodiment, a vacuum control valve 44 is installed on the vacuum branch pipe 43. By adjusting the vacuum control valve 44, the negative pressure of each MBR membrane module 2 can be precisely controlled. In actual operation, the negative pressure of each MBR membrane module 2 can be individually adjusted according to its working state and processing requirements to achieve the best filtration effect. The vacuum control valve 44 can also serve as a fault isolation device. When a certain MBR membrane module 2 malfunctions, its corresponding vacuum control valve 44 can be closed to prevent the fault from affecting the normal operation of other MBR membrane modules 2. It also facilitates the individual inspection and maintenance of the faulty membrane module 2.

[0041] Further, as shown in the figure, the aeration pipe assembly includes a main aeration pipe 51 and multiple aeration branch pipes 52. The main aeration pipe 51 is connected to the aeration ports of multiple MBR membrane modules 2 through the multiple aeration branch pipes 52 in a one-to-one correspondence. The aeration branch pipes 52 facilitate individual control of the aeration of each MBR membrane module 2, achieving uniform aeration distribution. This ensures that the microorganisms within each MBR membrane module 2 receive sufficient oxygen, guaranteeing their activity and metabolic capacity, and improving wastewater treatment efficiency. Simultaneously, uniform aeration prevents localized hypoxia or over-aeration, extending the service life of the MBR membrane module 2. In this embodiment, the aeration branch pipes 52 are equipped with aeration valve 53 to flexibly control the aeration rate of each MBR membrane module 2, while also facilitating troubleshooting and maintenance of the aeration system.

[0042] Furthermore, in this embodiment, a cover plate (not shown) is sealed at the top of the first zone. The cover plate and the partition plate 11 form a sealed space within the cavity of the first zone, effectively preventing the leakage of waste gas generated during wastewater treatment into the surrounding environment, reducing air pollution, and protecting the health of nearby residents. Simultaneously, the sealed space also helps maintain stable pressure within the device, improving the filtration efficiency of the MBR membrane module 2. Further, as shown in the figure, an odor collection pipe 12 is provided within the first zone. This pipe collects the odor generated during wastewater treatment and treats it using specialized odor treatment equipment. This effectively reduces odors around the device, improves the working environment and surrounding environmental quality, helps the device meet environmental protection requirements, and reduces air pollution.

[0043] As shown in the figure, in this embodiment, a sludge return pipe 13 is provided at the bottom of the frame 1. The inlet of the sludge return pipe 13 is connected to the sludge outlet of the first zone, and the outlet of the sludge return pipe 13 can be connected to the sludge tank.

[0044] The modular MBR membrane separation device provided in this embodiment is used as follows: First, the prefabricated frame 1, multiple MBR membrane modules 2, aeration pipe assembly, bidirectional water flow pipe assembly, and vacuum pipe assembly are transported to the site. They can be assembled on-site, greatly shortening the installation time. After all components are installed and checked for errors, the device is started. First, the vacuum pipe assembly is activated, and the constant pressure tank 41 begins operation. Negative pressure is applied to the area where the MBR membrane module 2 is located through the main vacuum pipe 42 and vacuum branch pipes 43, ensuring that the MBR membrane module 2 operates in a stable negative pressure environment, providing the power basis for subsequent wastewater filtration. Simultaneously, the aeration pipe assembly is activated, and air is evenly introduced into each MBR membrane module 2 through the main aeration pipe 51 and aeration branch pipes 52, providing sufficient oxygen to the internal microorganisms and activating their decomposition and metabolism of organic matter in the wastewater. Next, the wastewater inlet valve is opened, and wastewater flows into the device, being evenly distributed to each MBR membrane module 2 through the water flow branch pipes 32 of the bidirectional water flow pipe assembly. After wastewater enters MBR membrane module 2, under negative pressure, water molecules and small molecules in the wastewater pass through the MBR membrane, achieving solid-liquid separation. The filtered reclaimed water flows into the reclaimed water tank through a bidirectional water flow pipe assembly and can be used for irrigation of green areas and road washing, improving water resource utilization. During operation, a level sensor monitors the liquid level in the device in real time. When the liquid level approaches the preset high liquid level threshold, the control system automatically adjusts the inlet valve to slow down the wastewater inflow. If the liquid level continues to rise beyond the normal range, the backup drainage equipment is activated to prevent wastewater overflow. A sludge concentration meter monitors the activated sludge concentration in real time. When the concentration is too high or too low, the control system adjusts the aeration rate, sludge discharge rate, and nutrient dosage accordingly to ensure that the microorganisms are in optimal growth and working condition, maintaining a stable and efficient wastewater treatment effect.

[0045] Example 2:

[0046] This embodiment provides another modular MBR membrane separation device, which includes the modular MBR membrane separation device described in Embodiment 1.

[0047] In this embodiment, the device also includes a control unit, a liquid level sensor, and a sludge concentration meter, which are connected to the control unit. During wastewater treatment, the liquid level sensor monitors the liquid level, and the control unit adaptively adjusts the amount of wastewater entering the device based on the feedback signal from the liquid level sensor, ensuring that the liquid level is always maintained within a safe and suitable operating range. In case of a liquid level sensor malfunction, an overflow pipe 14 is provided inside the device to prevent overflow, employing a double-safety design to ensure normal operation. The main function of the sludge concentration meter is to accurately detect the concentration of activated sludge within the device. The control unit can adjust the flow rate of the sludge return pipe 13 and the aeration rate of the aeration branch pipe 52 based on the data from the sludge concentration meter, ensuring stable and efficient operation of the device.

[0048] It should be noted that the control unit's adjustment principle based on the feedback signal from the liquid level sensor and the control unit's adjustment principle based on the feedback signal from the sludge concentration meter are both existing technologies.

[0049] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0051] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A modular MBR membrane separation device, characterized in that, Includes a frame (1), multiple MBR membrane modules (2), aeration tube assembly, bidirectional water flow tube assembly, and vacuum tube assembly; A partition (11) is provided inside the frame (1) to divide the space inside the frame (1) into a first zone and a second zone; multiple MBR membrane modules (2) are arranged side by side in the first zone, and the aeration pipe group, vacuum pipe group and bidirectional water flow pipe group are arranged in the second zone. The aeration tube group is connected to the aeration port of each MBR membrane module (2); The bidirectional water flow pipe group connects the water outlet of each MBR membrane module (2). The greywater obtained after filtration by the MBR membrane module (2) can flow into the greywater tank through the bidirectional water flow pipe group. When the MBR membrane module (2) is clogged, the MBR membrane module (2) can be backwashed through the bidirectional water flow pipe group. The vacuum tube assembly is connected to the MBR membrane module (2) through the bidirectional water flow tube assembly to ensure that the MBR membrane module (2) can operate under negative pressure.

2. The modular MBR membrane separation device as described in claim 1, characterized in that, The bidirectional water flow pipe assembly includes a main water flow pipe (31) and multiple branch water flow pipes (32); The main water pipe (31) is connected to the water outlets of multiple MBR membrane modules (2) one by one through multiple branch water pipes (32); The vacuum tube assembly connects to each water flow branch pipe (32).

3. The modular MBR membrane separation device as described in claim 2, characterized in that, Each water flow branch pipe (32) is equipped with a water flow valve (33), an air tightness detection pipe (34), and a negative pressure gauge installation pipe (35).

4. The modular MBR membrane separation device as described in claim 2, characterized in that, The vacuum tube assembly includes a constant-load tank (41), a main vacuum tube (42), and multiple vacuum branch tubes (43); The constant hanging tank (41) is set on the frame (1), and the outlet of the vacuum main pipe (42) is connected to the constant hanging tank (41). The vacuum main pipe (42) is connected to multiple water flow branch pipes (32) one by one through multiple vacuum branch pipes (43).

5. The modular MBR membrane separation device as described in claim 4, characterized in that, A vacuum control valve (44) is installed on the vacuum branch pipe (43).

6. The modular MBR membrane separation device as described in claim 1, characterized in that, The aeration pipe assembly includes a main aeration pipe (51) and multiple aeration branch pipes (52); The main aeration pipe (51) is connected to the aeration ports of multiple MBR membrane modules (2) one by one through multiple aeration branch pipes (52).

7. The modular MBR membrane separation device as described in claim 6, characterized in that, An aeration valve (53) is installed on the aeration branch pipe (52).

8. The modular MBR membrane separation device as described in claim 1, characterized in that, The top of the first zone is sealed with a cover plate, which, together with the partition plate (11), forms a sealed space for the cavity in the first zone.

9. The modular MBR membrane separation device as described in claim 8, characterized in that, Odor collection pipe (12) is installed in the first zone; The frame (1) is provided with a sludge backflow pipe (13) at the bottom, the inlet of the sludge backflow pipe (13) is communicated with the sludge outlet of the first zone, and the outlet of the sludge backflow pipe (13) can be communicated with the sludge pool.

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