Pilot-scale test equipment for MBR membrane treatment process

Abstract

The utility model relates to the technical field of sewage treatment, in particular to pilot plant test equipment for an MBR (Membrane Bioreactor) membrane treatment process, which comprises an equipment body, an anaerobic tank, a first anoxic tank, an aerobic tank, a second anoxic tank, a first connecting pipe, a membrane tank and a first water outlet pipe, the water outlet end of the water inlet pipe is arranged at the lower part of the first sedimentation tank, and the water inlet end of the first overflow pipe is arranged at the upper part of the first sedimentation tank. The switching valve is arranged on the first connecting pipe and is connected with the first sedimentation tank through the water inlet pipe, when the membrane filaments need to be replaced, water flow is switched to the first sedimentation tank through the switching valve, and then water is discharged from the first overflow pipe, so that when the membrane filaments are cleaned and the membrane tank cannot be used, the first sedimentation tank can replace the membrane tank to purify sewage; the cleanliness of discharged water is guaranteed, continuous water discharging is also guaranteed, and continuous water supply of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field more particularly, relate to a kind of MBR membrane treatment process pilot plant. BACKGROUND

[0002] Sewage treatment pilot plant is commonly used equipment in sewage treatment field, generally refer to the proportion of actual sewage treatment production line and membrane pool design and operation, the operation condition of actual production line is simulated by relatively small equipment, and the existing pilot plant design is relatively simple, there are many problems when using: 1, MBR membrane in the equipment is offline cleaning, sewage lacks the filtration of MBR membrane, equipment cannot directly discharge water, equipment needs to be shut down;2, without designing deodorization system, it is easy to cause odor overflow;3, the height of pilot plant is generally two to three meters, and mixed liquor is taken pool surface, and there is sampling inconvenience and safety risk etc. Problem;4, aeration structure design is simple, and aeration effect is insufficient, which affects treatment effect, and MBR membrane silk is easy to be seriously silted, which affects membrane system operation. SUMMARY

[0003] The utility model discloses to overcome the defect that sewage treatment pilot plant in the prior art needs to be shut down when MBR membrane is cleaned, provide a kind of MBR membrane treatment process pilot plant, when MBR membrane is cleaned, equipment does not need to be shut down, can keep continuous work.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a kind of MBR membrane treatment process pilot plant, including equipment body, setting on the equipment body and sequentially connecting anaerobic tank, first anoxic tank, aerobic tank and second anoxic tank, first connecting pipe connected with the second anoxic tank, membrane pool connected with the first connecting pipe, first water outlet pipe connected with the membrane pool, it is characterized by, still include the switching valve being installed on the first connecting pipe, water inlet pipe connected with the switching valve, first sedimentation tank connected with the water inlet pipe, first overflow pipe connected with the first sedimentation tank, the water outlet end of the water inlet pipe is set in the lower portion of the first sedimentation tank, and the water inlet end of the first overflow pipe is set in the upper portion of the first sedimentation tank.

[0005] After sewage is accessed, it is processed in turn through an anaerobic tank, a first anoxic tank, an aerobic tank and a second anoxic tank, and then enters a membrane tank through a first connecting pipe, the membrane tank is provided with MBR membrane filaments, sewage is filtered through the MBR membrane filaments and then discharged from a first water outlet, when the membrane filaments need to be taken out for cleaning, the water flow is switched to the water inlet pipe through a switching valve, thereby cutting off the water inlet of the membrane tank, and then the membrane filaments are taken out for cleaning, the water inlet pipe is provided on one side, and the water outlet end of the water inlet pipe is arranged at the lower part of the first sedimentation tank, sewage flows into the lower part of the first sedimentation tank, and the sedimentation effect of the first sedimentation tank is used to make impurities in the sewage precipitate at the bottom of the tank, and then the upper clear liquid flows out through a first overflow pipe; through the above arrangement, when the membrane filaments need to be taken out for cleaning, the water flow accessing the membrane tank is cut off, the water flow is guided to the first sedimentation tank, the sewage is discharged after being subjected to sedimentation treatment, and the first sedimentation tank is used to replace the membrane tank to purify the sewage, so that the discharged water meets the cleanliness requirement, and the equipment can maintain water discharge, without affecting the subsequent process or water supply.

[0006] Preferably, the sewage treatment device further comprises a reflux pipe connected to the first sedimentation tank at one end, and a sludge reflux pump installed on the reflux pipe, and the other end of the reflux pipe is connected to the anaerobic tank.

[0007] The sludge reflux pump draws sludge at the bottom of the first sedimentation tank back into the anaerobic tank through the reflux pipe, thereby supplementing sludge for the anaerobic tank and avoiding excessive sludge in the first sedimentation tank.

[0008] Preferably, the sewage treatment device further comprises a second sedimentation tank connected to the first overflow pipe, and a second overflow pipe connected to the second sedimentation tank, and the water outlet end of the first overflow pipe is arranged at the lower part of the second sedimentation tank, and the water inlet end of the second overflow pipe is arranged at the upper part of the second sedimentation tank.

[0009] The second sedimentation tank has the same effect as the first sedimentation tank, and is used for further purifying sewage, and further, a pipeline is additionally arranged to connect the second sedimentation tank and the reflux pipe, so that sludge in the second sedimentation tank can also be drawn into the anaerobic tank.

[0010] Preferably, the sewage treatment device further comprises a confluence pipe connected to the first water outlet and the second overflow pipe at one end, and a detection assembly arranged on the confluence pipe and used for detecting water quality.

[0011] The one end of the confluence pipe is connected with the first water outlet pipe and the second overflow pipe respectively, and the other end is connected with the detection assembly. The water flowing out from the membrane pool or the second sedimentation pool is detected by the detection assembly, and then the water is discharged, so as to control the water discharge situation. Most importantly, the detection assembly can reversely monitor the water purification effect of the membrane pool or the second sedimentation pool, so as to find out whether the sludge is excessively adhered to the membrane filaments in time, and then the membrane filaments can be cleaned in time. When actually used, the aeration device is arranged at the bottom of the membrane filaments. After the detection assembly is arranged, the working airflow of the aeration device can be increased, the vibration of the membrane filaments is increased, and the adhesion of sludge or impurities on the membrane filaments is further reduced, so that the filtration time of the membrane filaments is prolonged.

[0012] Preferably, the detection assembly comprises a detection box arranged on the confluence pipe, a turbidity detector connected with the detection box, and a processing unit connected with the turbidity detector, wherein the processing unit is used for processing and displaying detection results and is connected with the equipment body.

[0013] After the water flow flows into the detection box, the turbidity detector detects the water flow. The detection box can buffer the water flow, ensure the effect of the turbidity detector, and facilitate the staff to observe the water quality through the detection box. The staff can directly observe whether the water quality is turbid.

[0014] Preferably, the device further comprises a sealing cover plate arranged above the anaerobic pool, the first anoxic pool, the aerobic pool and the second anoxic pool, a first exhaust pipe connected with the sealing cover plate, wherein the first exhaust pipe is in communication with the anaerobic pool, the first anoxic pool, the aerobic pool and the second anoxic pool, and the sealing cover plate is provided with an observation window made of transparent material.

[0015] The sealing cover plate is arranged to cover the odor of the treatment pools such as the anaerobic pool, the first anoxic pool, the aerobic pool and the second anoxic pool, so as to avoid odor overflow. The observation window is arranged to facilitate the staff to observe the working condition in each treatment pool, so that the staff can directly observe the condition in the pool without opening the sealing cover plate.

[0016] Preferably, the device further comprises a deodorization fan connected with the first exhaust pipe, and a second exhaust pipe connected with the deodorization fan.

[0017] The deodorization fan is arranged to improve the flow of gas, so as to conveniently convey the gas to a suitable position, such as a gas pipeline or a deodorization device in a factory.

[0018] Preferably, the device further comprises a deodorization box connected with the second exhaust pipe, a third exhaust pipe connected with the deodorization box, and a filter material arranged in the deodorization box.

[0019] The deodorization box is arranged to deodorize the gas. The filter material in the deodorization box is used for purifying the gas, so as to realize deodorization. Specifically, the filter material comprises activated carbon.

[0020] Preferably, it further comprises a detection pipe, a ball valve connected with the detection pipe, a second connecting pipe connected with the ball valve, a water pump connected with the second connecting pipe, and a second water outlet pipe connected with the water pump, a plurality of branch pipes are communicated with the end of the detection pipe, and the water inlet ends of the plurality of branch pipes are arranged in the middle of the anaerobic tank, the first anoxic tank, the aerobic tank and the second anoxic tank respectively.

[0021] The branch pipes at one end of the detection pipe extend into the respective treatment tanks, and the other ends are connected with the ball valve; the ball valve is sequentially connected with the second connecting pipe, the water pump and the second water outlet pipe; when sampling of the respective treatment tanks is needed, the ball valve is opened, and then the water pump is opened; the water in the respective treatment tanks is drawn into the branch pipes, and then flows out from the second water outlet pipe after being combined.

[0022] Preferably, it further comprises a control cabinet connected with the water pump.

[0023] The control cabinet is used for controlling the water pump, facilitating control of the water outlet quantity of sampling, and the signal connection between the control cabinet and the water pump is wired connection or wireless connection.

[0024] Compared with the prior art, the MBR membrane treatment process pilot plant device has the following beneficial effects:

[0025] 1. The switching valve is arranged on the first connecting pipe, the switching valve is connected with the first sedimentation tank through the water inlet pipe, when the membrane wire needs to be replaced, the water flow is switched to the first sedimentation tank through the switching valve, and then the water is discharged from the first overflow pipe, so that when the membrane pool cannot be used for cleaning the membrane wire, the first sedimentation tank can be used to replace the membrane pool to purify the sewage, the cleanliness of the water outlet is ensured, the continuous water outlet is ensured, and the continuous water supply of the equipment is ensured.

[0026] 2. The detection assembly is arranged on the combined pipe, the water outlet of the membrane pool and the first sedimentation tank is monitored, the water outlet quality is ensured, and the working condition of the membrane wire is also monitored in reverse, so that excessive adhesion of sludge or impurities on the membrane wire is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure connection of the MBR membrane treatment process pilot plant device of the utility model;

[0028] Figure 2 is a schematic diagram of the detection pipe of the MBR membrane treatment process pilot plant device of the utility model;

[0029] Figure 3 is a schematic diagram of the sealing cover plate of the MBR membrane treatment process pilot plant device of the utility model.

[0030] In the figure: 1, the device body; 2, anaerobic tank; 3, the first anoxic tank; 4, aerobic tank; 5, the second anoxic tank; 6, the first connecting pipe; 7, membrane tank; 8, the first water outlet pipe; 9, switch valve; 10, water inlet pipe; 11, the first sedimentation tank; 12, the first overflow pipe; 13, reflux pipe; 14, sludge reflux pump; 15, the second sedimentation tank; 16, the second overflow pipe; 17, combined pipe; 18, detection assembly; 1801, detection box; 1802, turbidity detector; 1803, processing unit; 19, sealing cover plate; 1901, observation window; 20, detection pipe; 21, ball valve; 22, the second connecting pipe; 23, water pump; 24, the second water outlet pipe; 25, control cabinet. DETAILED DESCRIPTION

[0031] The drawings are only used for illustrative description, and should not be understood as limiting the patent; in order to better illustrate the embodiment, some components in the drawings can be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted. The positional relationship described in the drawings is only used for illustrative description, and should not be understood as limiting the patent.

[0032] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it should be understood that if the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "long" and "short" is based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative description, and should not be understood as limiting the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0033] The technical scheme of the utility model will be further specifically described below through specific embodiments and in conjunction with the drawings:

[0034] Embodiment 1

[0035] As Figure 1The utility model discloses a kind of MBR membrane treatment process pilot plant equipment, including equipment body 1, be set in equipment body 1 and sequentially connect anaerobic tank 2, first anoxic tank 3, aerobic tank 4 and second anoxic tank 5, with the first connecting pipe 6 of second anoxic tank 5 connection, with the membrane tank 7 of first connecting pipe 6 connection, with the first water outlet pipe 8 of membrane tank 7 connection, it is characterized by further including switching valve 9 installed on first connecting pipe 6, with the inlet pipe 10 of switching valve 9 connection, with the first sedimentation tank 11 of inlet pipe 10 connection, with the first overflow pipe 12 of first sedimentation tank 11 connection, the water outlet end of inlet pipe 10 is set in the lower portion of first sedimentation tank 11, and the water inlet end of first overflow pipe 12 is set in the upper portion of first sedimentation tank 11.

[0036] After sewage access, in turn through the treatment of anaerobic tank 2, first anoxic tank 3, aerobic tank 4 and second anoxic tank 5, then through first connecting pipe 6 into membrane tank 7, membrane tank 7 is equipped with MBR membrane wire, sewage is filtered after passing through MBR membrane wire and then from first water outlet pipe 8, when membrane wire needs to be taken out for cleaning, switching valve 9 is switched to inlet pipe 10, and then the water inlet of membrane tank 7 is cut off, then the membrane wire is taken out for cleaning, one side of inlet pipe 10, the water outlet end of inlet pipe 10 is set in the lower portion of first sedimentation tank 11, and the water inlet end of first overflow pipe 12 is set in the upper portion of first sedimentation tank 11.

[0037] The beneficial effects of the embodiment: switching valve 9 is arranged on the first connecting pipe 6, switching valve 9 is connected to the first sedimentation tank 11 through the inlet pipe 10, when the membrane wire needs to be replaced, switching valve 9 is switched to the first sedimentation tank 11, and then water is discharged from the first overflow pipe 12, so that when the membrane cleaning membrane tank 7 cannot be used, the first sedimentation tank 11 can replace the membrane tank 7 to purify the sewage, ensure the cleanliness of the effluent, and ensure continuous water supply of the equipment.

[0038] Embodiment 2

[0039] On the basis of embodiment 1, the difference from embodiment 1 is that:

[0040] As Figure 1The device further comprises a backflow pipe 13 connected to the first sedimentation tank 11 at one end, a sludge backflow pump 14 installed on the backflow pipe 13, and the other end of the backflow pipe 13 is connected to the anaerobic tank 2. The device further comprises a second sedimentation tank 15 connected to the first overflow pipe 12, a second overflow pipe 16 connected to the second sedimentation tank 15, the water outlet end of the first overflow pipe 12 is arranged at the lower part of the second sedimentation tank 15, and the water inlet end of the second overflow pipe 16 is arranged at the upper part of the second sedimentation tank 15. The device further comprises a confluence pipe 17 connected to the first water outlet pipe 8 and the second overflow pipe 16 at one end respectively, and a detection assembly 18 arranged on the confluence pipe 17 for detecting water quality. The detection assembly 18 comprises a detection box 1801 arranged on the confluence pipe 17, a turbidity detector 1802 connected to the detection box 1801, and a processing unit 1803 connected to the turbidity detector 1802, the processing unit 1803 is used for processing and displaying detection results and is connected to the device body 1.

[0041] The sludge backflow pump 14 draws the sludge at the bottom of the first sedimentation tank 11 back to the anaerobic tank 2 through the backflow pipe 13, which not only supplements the sludge for the anaerobic tank 2, but also avoids excessive sludge in the first sedimentation tank 11. The second sedimentation tank 15 has the same effect as the first sedimentation tank 11, which is used for further purifying wastewater. Further, a pipeline is additionally arranged to connect the second sedimentation tank 15 and the backflow pipe 13, so that the sludge in the second sedimentation tank 15 can also be drawn into the anaerobic tank 2. One end of the confluence pipe 17 is connected to the first water outlet pipe 8 and the second overflow pipe 16 respectively, and the other end is connected to the detection assembly 18. The water flowing out of the membrane tank 7 or the second sedimentation tank 15 is detected by the detection assembly 18 before being discharged, so as to facilitate the control of the water discharge condition. Most importantly, the detection assembly 18 can reversely monitor the water purification effect of the membrane tank 7 or the second sedimentation tank 15, so as to timely find out whether the sludge excessively adheres to the membrane filaments, and then the membrane filaments can be cleaned in time. In actual use, the bottom of the membrane filaments is provided with an aeration device, and after the detection assembly 18 is arranged, the working airflow of the aeration device can also be increased, the vibration of the membrane filaments is increased, and the adhesion of sludge or impurities on the membrane filaments is further reduced, thereby prolonging the filtration time of the membrane filaments. After the water flow flows into the detection box 1801, it is detected by the turbidity detector 1802. The detection box 1801 can buffer the water flow to ensure the effect of the turbidity detector 1802, and also facilitates the staff to observe the water quality through the detection box 1801, so that whether the water quality is turbid can be directly observed.

[0042] The remaining features and working principles of the embodiment are consistent with those of embodiment 1.

[0043] Embodiment 3

[0044] On the basis of embodiment 1 or embodiment 2, embodiment 1 or embodiment 2 is further limited, and the difference lies in that:

[0045] As Figure 3As shown, the device further comprises a sealing cover plate 19 arranged above the anaerobic tank 2, the first anoxic tank 3, the aerobic tank 4 and the second anoxic tank 5 respectively, a first exhaust pipe connected with the sealing cover plate 19, the first exhaust pipe being in communication with the anaerobic tank 2, the first anoxic tank 3, the aerobic tank 4 and the second anoxic tank 5, and an observation window 1901 made of transparent material arranged on the sealing cover plate 19. Figure 2 As shown, the device further comprises a deodorization fan connected with the first exhaust pipe, and a second exhaust pipe connected with the deodorization fan. The device further comprises a deodorization box connected with the second exhaust pipe, a third exhaust pipe connected with the deodorization box, and a filtering material arranged in the deodorization box. The device further comprises a detection pipe 20, a ball valve 21 connected with the detection pipe 20, a second connecting pipe 22 connected with the ball valve 21, a water pump 23 connected with the second connecting pipe 22, and a second water outlet pipe 24 connected with the water pump 23. The detection pipe 20 has a plurality of branch pipes at the end thereof, and the water inlet ends of the branch pipes are arranged in the middle of the anaerobic tank 2, the first anoxic tank 3, the aerobic tank 4 and the second anoxic tank 5 respectively. The device further comprises a control cabinet 25 connected with the water pump 23.

[0046] The sealing cover plate 19 is arranged to cover the odor of the treatment tanks such as the anaerobic tank 2, the first anoxic tank 3, the aerobic tank 4 and the second anoxic tank 5, so as to avoid odor overflow. The observation window 1901 is arranged to facilitate the staff to observe the working conditions in the treatment tanks, so that the staff can directly observe the conditions in the tanks without opening the sealing cover plate 19. The deodorization fan is arranged to improve the flow of gas, so as to facilitate the gas to be transported to a suitable position, such as a gas pipeline or a deodorization device in a factory. The deodorization box is arranged to deodorize the gas, and the filtering material in the box is used to purify the gas, so as to achieve deodorization. Specifically, the filtering material comprises activated carbon. The branch pipes at one end of the detection pipe 20 extend into the treatment tanks respectively, and the other ends are connected with the ball valve 21. The ball valve 21 is connected with the second connecting pipe 22, the water pump 23 and the second water outlet pipe 24 in sequence. When sampling is needed, the ball valve 21 is opened, and then the water pump 23 is opened. The water in the treatment tanks is drawn into the branch pipes, and then flows out from the second water outlet pipe 24 after confluence. The control cabinet 25 is used to control the water pump 23, so as to facilitate the control of the water outlet amount of sampling. The signal connection between the control cabinet 25 and the water pump 23 is wired or wireless.

[0047] Figure 3 In the embodiment, only the second anoxic tank 5 is provided with a sealing cover plate 19 for illustration. In actual work, the anaerobic tank 2, the first anoxic tank 3, the aerobic tank 4 and the second anoxic tank 5 are all provided with sealing cover plates 19, and as shown in Figure 2 As shown, the branch pipes at the end of the detection pipe 20 extend through the sealing cover plates 19 and into the middle of the treatment tanks.

[0048] The remaining working principle and working process of the embodiment are consistent with those of the embodiment 1 or the embodiment 2.

[0049] In the specific contents of the foregoing specific embodiments, each technical feature can be combined arbitrarily without contradiction, and to make the description brief, all possible combinations of the foregoing technical features are not described, however, as long as the combinations of the technical features do not exist contradiction, it should be considered that it is within the scope of the present disclosure.

[0050] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application claims.

Claims

1. A pilot-scale MBR membrane treatment process, comprising a main body (1), an anaerobic tank (2), a first anoxic tank (3), an aerobic tank (4), and a second anoxic tank (5) arranged on the main body (1) and connected in sequence, a first connecting pipe (6) connected to the second anoxic tank (5), a membrane tank (7) connected to the first connecting pipe (6), and a first effluent pipe (8) connected to the membrane tank (7), characterized in that, It also includes a switching valve (9) installed on the first connecting pipe (6), an inlet pipe (10) connected to the switching valve (9), a first sedimentation tank (11) connected to the inlet pipe (10), and a first overflow pipe (12) connected to the first sedimentation tank (11). The outlet end of the inlet pipe (10) is located at the lower part of the first sedimentation tank (11), and the inlet end of the first overflow pipe (12) is located at the upper part of the first sedimentation tank (11).

2. The pilot-scale equipment for MBR membrane treatment process according to claim 1, characterized in that: It also includes a return pipe (13) with one end connected to the first sedimentation tank (11) and a sludge return pump (14) installed on the return pipe (13), the other end of which is connected to the anaerobic tank (2).

3. The pilot-scale equipment for MBR membrane treatment process according to claim 2, characterized in that: It also includes a second sedimentation tank (15) connected to the first overflow pipe (12) and a second overflow pipe (16) connected to the second sedimentation tank (15). The outlet end of the first overflow pipe (12) is located at the lower part of the second sedimentation tank (15), and the inlet end of the second overflow pipe (16) is located at the upper part of the second sedimentation tank (15).

4. The pilot-scale equipment for MBR membrane treatment process according to claim 3, characterized in that: It also includes a confluence pipe (17) with one end connected to the first outlet pipe (8) and the second overflow pipe (16) respectively, and a detection component (18) for detecting water quality installed on the confluence pipe (17).

5. A pilot-scale MBR membrane treatment process according to claim 4, characterized in that: The detection assembly (18) includes a detection box (1801) disposed on the merging pipe (17), a turbidity detector (1802) connected to the detection box (1801), and a processing unit (1803) connected to the turbidity detector (1802). The processing unit (1803) is used to process and display the detection results and is connected to the device body (1).

6. The pilot-scale equipment for MBR membrane treatment process according to claim 1, characterized in that: It also includes a sealing cover plate (19) respectively installed above the anaerobic tank (2), the first anoxic tank (3), the aerobic tank (4) and the second anoxic tank (5), and a first exhaust pipe connected to the sealing cover plate (19). The first exhaust pipe is connected to the anaerobic tank (2), the first anoxic tank (3), the aerobic tank (4) and the second anoxic tank (5). The sealing cover plate (19) is provided with a transparent observation window (1901).

7. A pilot-scale MBR membrane treatment process according to claim 6, characterized in that: It also includes a deodorizing fan connected to the first exhaust pipe, and a second exhaust pipe connected to the deodorizing fan.

8. A pilot-scale MBR membrane treatment process according to claim 7, characterized in that: It also includes a deodorizing chamber connected to the second exhaust pipe, a third exhaust pipe connected to the deodorizing chamber, and filter material disposed within the deodorizing chamber.

9. A pilot-scale MBR membrane treatment process according to claim 1, characterized in that: It also includes a detection pipe (20), a ball valve (21) connected to the detection pipe (20), a second connecting pipe (22) connected to the ball valve (21), a water pump (23) connected to the second connecting pipe (22), and a second outlet pipe (24) connected to the water pump (23). The end of the detection pipe (20) is connected to multiple branch pipes, and the inlet ends of the multiple branch pipes are respectively located in the middle of the anaerobic tank (2), the first anoxic tank (3), the aerobic tank (4), and the second anoxic tank (5).

10. A pilot-scale MBR membrane treatment process according to claim 9, characterized in that: It also includes a control cabinet (25) that is signal-connected to the water pump (23).

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