Wastewater treatment method

Abstract

The invention discloses a wastewater treatment method, which comprises a wastewater storage water tank, a sedimentation mechanism, an MABR main body reactor, a gas balance mechanism, an MBfR main body reactor and a filter screen mechanism, and is characterized in that an on-off valve I on a water inlet pipe is closed, and an on-off valve II on a water outlet pipe is closed, so that a circulation loop is formed among a sedimentation tank body, a connecting pipe I and a connecting pipe II; a pump machine is started, so that wastewater in the sedimentation mechanism circularly flows in a circulation loop formed among the sedimentation tank body, the connecting pipe I and the connecting pipe II, and the flow rate of water flow in the circulation loop is detected through a flow meter in a speed measuring pipe so as to determine the smoothness degree of a filter screen mechanism in the sedimentation mechanism; the unobstructed degree in the sedimentation mechanism can be detected in real time through a flow meter in the speed measuring pipe, and the accumulation degree of sludge on the filter screen mechanism is judged according to the unobstructed degree of water flow in the sedimentation mechanism, so that whether the sludge on the filter screen mechanism needs to be treated or not is judged conveniently, and the wastewater treatment efficiency of the device is ensured conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater treatment method. Background Art

[0002] Wastewater is often generated in industrial production, but it cannot be discharged directly and needs to be purified to avoid pollution and harm to the environment.

[0003] Existing Chinese patent application CN112062277B discloses a combined MABR and CH4-MBfR system for treating para-nitrophenol wastewater. The system comprises a wastewater storage device, an MABR unit, and a CH4-MBfR unit, interconnected in sequence. An intermediate effluent tank is connected between the MABR and CH4-MBfR units. This invention leverages the advantages of both membrane reactors to effectively degrade para-nitrophenol, achieving deep denitrification and ensuring that the effluent meets discharge standards. Because the MABR utilizes bubbleless aeration, oxygen utilization rates can reach 100%, while the oxygen mass transfer range is limited. The anaerobic layer of bacteria first undergoes hydrolysis and acidification, reducing toxicity, before aerobic and facultative anaerobic layers undergo metabolic mineralization and degradation. The biofilm of denitrifying, methane-oxidizing anaerobic bacteria within the main CH4-MBfR reactor effectively achieves deep denitrification. The presence of a large number of methanogens within the biofilm contributes to the methane supply, saving carbon source addition costs and reducing methane greenhouse gas emissions.

[0004] The shortcomings of the above-mentioned existing technical solutions are that the sludge in the wastewater needs to be settled and filtered during the treatment process. The existing wastewater treatment device cannot monitor the sludge accumulated on the filter in real time and cannot remind the staff to treat the sludge in time, which is not conducive to improving the wastewater treatment efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a wastewater treatment method to solve the technical problems in the prior art that the sludge accumulated on the filter screen cannot be monitored in real time, the staff cannot be reminded to treat the sludge in time, and it is not conducive to improving the wastewater treatment efficiency.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions:

[0007] A method for treating wastewater comprises the following steps:

[0008] Step 1: The wastewater to be treated is transported to the wastewater storage tank, and then transported to the sedimentation mechanism through the water pipe 1. The on-off valve 1 on the water inlet pipe and the on-off valve 2 on the water outlet pipe are opened, and the wastewater to be treated enters the sedimentation tank through the water inlet pipe.

[0009] Step 2: The pipe on-off valve 1 on the connecting pipe 1 and the pipe on-off valve 2 on the connecting pipe 2 are both closed, and the wastewater flows to the MABR main reactor through the inlet pipe, the sedimentation tank, the filter mechanism and the outlet pipe.

[0010] Step 3: When it is necessary to test the patency of the sedimentation mechanism, close the on-off valve 1 on the water inlet pipe and the on-off valve 2 on the water outlet pipe at the same time, so that a circulation loop is formed between the sedimentation tank body, connecting pipe 1 and connecting pipe 2, start the pump, so that the wastewater in the sedimentation mechanism circulates in the circulation loop formed between the sedimentation tank body, connecting pipe 1 and connecting pipe 2, and the flow rate in the circulation loop is detected by the flow meter in the velocity measuring tube to determine the patency of the filter mechanism in the sedimentation mechanism.

[0011] Step 4: After the denitrification treatment of the MABR main reactor, the primary treated wastewater enters the intermediate water storage tank through water pipe 2. The primary treated wastewater in the intermediate water storage tank enters the MBfR main reactor through water pipe 3 for secondary treatment. The wastewater after secondary treatment enters the total outlet tank through water pipe 4 for storage.

[0012] A wastewater treatment device, comprising:

[0013] The sedimentation mechanism, the feed end of the sedimentation mechanism is connected to the wastewater storage tank, the discharge end of the sedimentation mechanism is connected to the MABR main reactor, and a water pipe 1 is connected between the sedimentation mechanism and the wastewater storage tank;

[0014] MBfR main reactor, an intermediate water storage tank is arranged between the MBfR main reactor and the MABR main reactor, a water pipe 2 is connected between the intermediate water storage tank and the MABR main reactor, a water pipe 3 is connected between the intermediate water storage tank and the MBfR main reactor, a gas balancing mechanism is connected to the MBfR main reactor, a total outlet water tank is arranged on one side of the MBfR main reactor, and a water pipe 4 is connected between the MBfR main reactor and the total outlet water tank.

[0015] As a further solution of the present invention: the sedimentation mechanism includes a cylindrical sedimentation tank body, the upper end of the sedimentation tank body is connected to a water inlet pipe, the lower end of the sedimentation tank body is connected to a water outlet pipe, a first on-off valve is fixedly installed on the water inlet pipe, and a second on-off valve is fixedly installed on the water outlet pipe.

[0016] As a further solution of the present invention: a filter channel is fixedly connected to the side end face of the sedimentation tank body, the filter channel is connected to the interior of the sedimentation tank body, a filter clamp plate 1 is fixedly connected to the bottom surface of the inner wall of the filter channel, a filter clamp plate 2 is fixedly connected to the top surface of the inner wall of the filter channel, and circular through holes are provided on the filter clamp plate 1 and the filter clamp plate 2.

[0017] As a further solution of the present invention: a connecting pipe 1 is fixedly connected and connected to the sedimentation tank body, a connecting pipe 2 is fixedly connected and connected to the water outlet pipe, a pipeline on-off valve 1 is fixedly installed on the end of the connecting pipe 1 close to the sedimentation tank body, a pipeline on-off valve 2 is fixedly installed on the end of the connecting pipe 2 close to the water outlet pipe, a speed measuring tube is connected between the connecting pipe 1 and the connecting pipe 2, a flow meter is fixedly installed in the speed measuring tube, and a pump is fixedly installed on the end of the connecting pipe 2 close to the speed measuring tube.

[0018] As a further solution of the present invention: the filter mechanism includes a channel cover plate, a mechanism connecting plate is fixedly connected to one end face of the channel cover plate, a filter hoop is fixedly connected to the mechanism connecting plate, a filter is fixedly connected to the filter hoop ring, sealing rubber rings are fixedly connected to the upper and lower end faces of the filter hoop ring, and a cover sealing ring corresponding to the filter channel opening is fixedly connected to the channel cover plate.

[0019] As a further solution of the present invention: both ends of the outer side of the filter channel are fixedly connected with fixed protrusions, and both ends of the channel cover plate are fixedly connected with docking protrusions corresponding to the fixed protrusions, a threaded hole is provided on the fixed protrusion, and a connecting through hole is provided through the docking protrusion, and a screw is provided between the fixed protrusion and the docking protrusion, and the screw passes through the connecting through hole on the docking protrusion and is threadedly connected to the threaded hole on the fixed protrusion.

[0020] As a further solution of the present invention: the gas balancing mechanism includes a storage tank, which is respectively connected to a connecting pipe 1 and a connecting pipe 2. The storage tank is connected to the MBfR main reactor through the connecting pipe 1 and the connecting pipe 2, respectively. A conveying pump 1 is fixedly installed on the connecting pipe 1, and a conveying pump 2 is fixedly installed on the connecting pipe 2.

[0021] Beneficial effects of the present invention:

[0022] 1. When the present invention is in use, when it is necessary to detect the patency of the sedimentation mechanism, the on-off valve 1 on the water inlet pipe is closed, and the on-off valve 2 on the water outlet pipe is closed at the same time, so that a circulation loop is formed between the sedimentation tank body, the connecting pipe 1 and the connecting pipe 2, and the pump is started so that the wastewater in the sedimentation mechanism circulates in the circulation loop formed between the sedimentation tank body, the connecting pipe 1 and the connecting pipe 2, and the water flow velocity in the circulation loop is detected by the flow meter in the velocity measuring tube to determine the patency of the filter mechanism in the sedimentation mechanism. The patency of the sedimentation mechanism can be detected in real time by the flow meter in the velocity measuring tube, and the degree of accumulation of sludge on the filter mechanism can be judged by the patency of the water flow in the sedimentation mechanism, thereby facilitating the judgment of whether the sludge on the filter mechanism needs to be processed, thereby ensuring the treatment efficiency of the device for wastewater;

[0023] 2. Filter plate 1 and filter plate 2 for clamping the filter mechanism are respectively fixed on the inner wall of the filter channel of the present invention. The sealing rubber rings on the two end surfaces of the filter hoop of the filter mechanism can ensure the sealing of the connection between the filter mechanism and the filter plate 1 and the filter plate 2, thereby ensuring the filtering effect of the filter mechanism. When the filter mechanism needs to be replaced, the bolts between the fixing protrusion and the docking protrusion are removed, and the filter mechanism is pulled out of the filter channel to complete the maintenance and replacement of the filter mechanism, which is convenient for the staff to maintain the filter mechanism and is conducive to ensuring the production efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural diagram of the connection relationship between the sedimentation mechanism and the filter mechanism in the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the sedimentation mechanism of the present invention;

[0028] Figure 4 It is a partial structural diagram of the sedimentation mechanism of the present invention;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the filter mechanism of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the connection relationship between the gas balance mechanism and the MBfR main reactor of the present invention.

[0031] Figure: 1. Wastewater storage tank; 2. Water pipe 1; 3. Sedimentation mechanism; 31. Sedimentation tank; 32. Water inlet pipe; 33. Water outlet pipe; 34. Filter channel; 35. Fixing block; 36. Filter clamp 1; 37. Filter clamp 2; 38. On-off valve 1; 39. On-off valve 2; 310. Connecting pipe 1; 311. Connecting pipe 2; 312. Velocity measuring tube; 313. Pump; 4. MABR main reactor; 5. Water pipe 2; 6. Intermediate water storage Water drain tank; 7. Water pipe three; 8. Gas balancing mechanism; 81. Storage tank; 82. Connecting pipe one; 83. Connecting pipe two; 84. Delivery pump one; 85. Delivery pump two; 9. MBfR main reactor; 10. Water pipe four; 11. Total water outlet tank; 12. Filter mechanism; 121. Channel cover; 122. Docking bump; 123. Cover sealing ring; 124. Mechanism connecting plate; 125. Filter hoop; 126. Sealing rubber ring. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] like Figures 1-6 As shown, a wastewater treatment device comprises:

[0034] The sedimentation mechanism 3, the feed end of the sedimentation mechanism 3 is connected to the wastewater storage tank 1, the discharge end of the sedimentation mechanism 3 is connected to the MABR main reactor 4, and the sedimentation mechanism 3 and the wastewater storage tank 1 are connected by a water pipe 2;

[0035] MBfR main reactor 9, an intermediate water storage tank 6 is arranged between the MBfR main reactor 9 and the MABR main reactor 4, a water pipe 2 5 is connected between the intermediate water storage tank 6 and the MABR main reactor 4, a water pipe 3 7 is connected between the intermediate water storage tank 6 and the MBfR main reactor 9, a gas balancing mechanism 8 is connected to the MBfR main reactor 9, a total outlet water tank 11 is arranged on one side of the MBfR main reactor 9, and a water pipe 4 10 is connected between the MBfR main reactor 9 and the total outlet water tank 11.

[0036] The MBfR main reactor 9 is a CH4-MBfR main reactor. The MBfR main reactor 9 is provided with an MBfR main reactor reaction column, a methane aeration system, a CH4-MBfR sludge circulation system and a CH4-MBfR water circulation system. The MABR main reactor is provided with a hollow fiber membrane for reaction.

[0037] The sedimentation mechanism 3 includes a cylindrical sedimentation tank body 31, the upper end of the sedimentation tank body 31 is connected to a water inlet pipe 32, the lower end of the sedimentation tank body 31 is connected to a water outlet pipe 33, the water inlet pipe 32 is fixedly installed with an on-off valve 1 38, the outlet pipe 33 is fixedly installed with an on-off valve 2 39, the side end surface of the sedimentation tank body 31 is fixedly connected to a filter channel 34, the filter channel 34 is connected to the interior of the sedimentation tank body 31, the bottom surface of the inner wall of the filter channel 34 is fixedly connected to a filter clamp 1 36, the top surface of the inner wall of the filter channel 34 is fixedly connected to a filter clamp 2 37, the filter clamp 1 36 and the filter clamp Circular through holes are provided on the two 37, and a connecting pipe 1 310 is fixedly connected and communicated with the sedimentation tank body 31, and a connecting pipe 2 311 is fixedly connected and communicated with the outlet pipe 33. A pipeline on-off valve 1 is fixedly installed on the end of the connecting pipe 1 310 close to the sedimentation tank body 31, and a pipeline on-off valve 2 is fixedly installed on the end of the connecting pipe 2 311 close to the outlet pipe 33. A speed measuring tube 312 is connected between the connecting pipe 1 310 and the connecting pipe 2 311, and a flow meter is fixedly installed in the speed measuring tube 312. A pump 313 is fixedly installed on the end of the connecting pipe 2 311 close to the speed measuring tube 312.

[0038] The filter mechanism 12 includes a channel cover plate 121, and a mechanism connecting plate 124 is fixedly connected to one end surface of the channel cover plate 121, and a filter hoop 125 is fixedly connected to the mechanism connecting plate 124, and a filter is fixedly connected to the filter hoop 125. Sealing rubber rings 126 are fixedly connected to the upper and lower end surfaces of the filter hoop 125, and a cover sealing ring 123 corresponding to the opening of the filter channel 34 is fixedly connected to the channel cover plate 121.

[0039] Both ends of the outer side of the filter channel 34 are fixedly connected with fixed protrusions 35, and both ends of the channel cover 121 are fixedly connected with docking protrusions 122 corresponding to the fixed protrusions 35. A threaded hole is provided on the fixing protrusion 35, and a connecting through hole is provided on the docking protrusion 122. A screw is provided between the fixing protrusion 35 and the docking protrusion 122, and the screw passes through the connecting through hole on the docking protrusion 122 and is threadedly connected to the threaded hole on the fixing protrusion 35.

[0040] The gas balancing mechanism 8 includes a storage tank 81, which is connected to a connecting pipe 1 82 and a connecting pipe 2 83 respectively. The storage tank 81 is connected to the MBfR main reactor 9 through the connecting pipe 1 82 and the connecting pipe 2 83 respectively. A delivery pump 1 84 is fixedly installed on the connecting pipe 1 82, and a delivery pump 2 85 is fixedly installed on the connecting pipe 2 83.

[0041] In some specific embodiments, water pipe 1 2 , water pipe 2 5 , water pipe 3 7 and water pipe 4 10 are fixedly installed with a delivery pump used to drive the water flow.

[0042] A method for treating wastewater comprises the following steps:

[0043] Step 1: The wastewater to be treated is transported to the wastewater storage tank 1, and then transported to the sedimentation mechanism 3 through the water pipe 1. The on-off valve 1 38 on the water inlet pipe 32 and the on-off valve 2 39 on the water outlet pipe 33 are opened, and the wastewater to be treated enters the sedimentation tank body 31 through the water inlet pipe 32.

[0044] Step 2: The pipeline on-off valve 1 on the connecting pipe 1 310 and the pipeline on-off valve 2 on the connecting pipe 2 311 are both closed, and the wastewater flows to the MABR main reactor through the water inlet pipe 32, the sedimentation tank body 31, the filter mechanism 12 and the water outlet pipe 33.

[0045] Step three: When it is necessary to test the patency of the sedimentation mechanism 3, close the on-off valve 1 38 on the water inlet pipe 32, and at the same time close the on-off valve 2 39 on the water outlet pipe 33, so that a circulation loop is formed between the sedimentation tank body 31, the connecting pipe 1 310 and the connecting pipe 2 311, start the pump 313, so that the wastewater in the sedimentation mechanism 3 circulates in the circulation loop formed between the sedimentation tank body 31, the connecting pipe 1 310 and the connecting pipe 2 311, and the flow rate in the circulation loop is detected by the flow meter in the velocity measuring tube 312 to determine the patency of the filter mechanism 12 in the sedimentation mechanism 3.

[0046] Step 4: The primary treated wastewater after denitrification treatment in the MABR main reactor enters the intermediate water storage tank 6 through the water pipe 2 5. The primary treated wastewater in the intermediate water storage tank 6 enters the MBfR main reactor 9 through the water pipe 3 7 for secondary treatment. The wastewater after secondary treatment enters the total outlet water tank 11 through the water pipe 4 10 for storage.

[0047] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in conjunction with specific application scenarios:

[0048] During use, when it is necessary to detect the patency of the sedimentation mechanism 3, the on-off valve 1 38 on the water inlet pipe 32 is closed, and the on-off valve 2 39 on the water outlet pipe 33 is closed at the same time, so that a circulation loop is formed between the sedimentation tank body 31, the connecting pipe 1 310 and the connecting pipe 2 311, and the pump 313 is started to circulate the wastewater in the sedimentation mechanism 3 in the circulation loop formed between the sedimentation tank body 31, the connecting pipe 1 310 and the connecting pipe 2 311. The flow rate in the circulation loop is detected by the flow meter in the velocity measuring tube 312 to determine the patency of the filter mechanism 12 in the sedimentation mechanism 3. The patency of the sedimentation mechanism 3 can be detected in real time by the flow meter in the velocity measuring tube 312. The degree of sludge accumulation on the filter mechanism 12 can be judged by the patency of the water flow in the sedimentation mechanism 3, thereby To facilitate the judgment of whether the sludge on the filter mechanism 12 needs to be processed, and to ensure the treatment efficiency of the device for wastewater, the inner walls of the two channels of the filter channel 34 are respectively fixed with a filter clamp 1 36 and a filter clamp 2 37 for clamping the filter mechanism 12, and the sealing rubber rings 126 on the two end surfaces of the filter hoop 125 of the filter mechanism 12 can ensure the sealing of the connection between the filter mechanism 12 and the filter clamp 1 36 and the filter clamp 2 37, thereby ensuring the filtering effect of the filter mechanism 12. When the filter mechanism 12 needs to be replaced, the bolts between the fixing protrusion 35 and the docking protrusion 122 are removed, and the filter mechanism 12 is pulled out from the filter channel 34 to complete the maintenance and replacement of the filter mechanism 12, which is convenient for the staff to maintain the filter mechanism 12 and is conducive to ensuring the production efficiency of the device.

[0049] The above describes several embodiments of the present invention in detail, but the embodiments of the present invention are not limited to these and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for treating wastewater, characterized in that: The steps include: S1: The wastewater to be treated is transported to the wastewater storage tank (1), and is transported to the sedimentation mechanism (3) through the water pipe (2). The on-off valve (38) on the water inlet pipe (32) and the on-off valve (39) on the water outlet pipe (33) are opened, and the wastewater to be treated enters the sedimentation tank (31) through the water inlet pipe (32); S2: The pipeline on-off valve 1 on the connecting pipe 1 (310) and the pipeline on-off valve 2 on the connecting pipe 2 (311) are both closed, and the wastewater flows to the MABR main reactor through the water inlet pipe (32), the sedimentation tank (31), the filter mechanism (12) and the water outlet pipe (33); S3: When it is necessary to detect the patency of the sedimentation mechanism (3), the on-off valve 1 (38) on the water inlet pipe (32) is closed, and the on-off valve 2 (39) on the water outlet pipe (33) is closed at the same time, so that a circulation loop is formed between the sedimentation tank body (31), the connecting pipe 1 (310) and the connecting pipe 2 (311), and the pump (313) is started, so that the wastewater in the sedimentation mechanism (3) circulates in the circulation loop formed between the sedimentation tank body (31), the connecting pipe 1 (310) and the connecting pipe 2 (311), and the flow rate of the water flow in the circulation loop is detected by the flow meter in the velocity measuring tube (312) to determine the patency of the filter mechanism (12) in the sedimentation mechanism (3); S4: After the denitrification treatment of the MABR main reactor, the primary treated wastewater enters the intermediate water storage tank (6) through the water pipe 2 (5). The primary treated wastewater in the intermediate water storage tank (6) enters the MBfR main reactor (9) through the water pipe 3 (7) for secondary treatment. The wastewater after the secondary treatment enters the total outlet water tank (11) through the water pipe 4 (10) for storage.

2. A wastewater treatment device for implementing the wastewater treatment method according to claim 1, characterized in that: include: A sedimentation mechanism (3), wherein the feed end of the sedimentation mechanism (3) is connected to a wastewater storage tank (1), the discharge end of the sedimentation mechanism (3) is connected to a MABR main reactor (4), and a water pipe (2) is connected between the sedimentation mechanism (3) and the wastewater storage tank (1); MBfR main reactor (9), an intermediate water storage tank (6) is provided between the MBfR main reactor (9) and the MABR main reactor (4), a water supply pipe 2 (5) is connected between the intermediate water storage tank (6) and the MABR main reactor (4), a water supply pipe 3 (7) is connected between the intermediate water storage tank (6) and the MBfR main reactor (9), a gas balancing mechanism (8) is connected to the MBfR main reactor (9), a total water outlet tank (11) is provided on one side of the MBfR main reactor (9), and a water supply pipe 4 (10) is connected between the MBfR main reactor (9) and the total water outlet tank (11).

3. A wastewater treatment device according to claim 2, characterized in that: The sedimentation mechanism (3) comprises a cylindrical sedimentation tank body (31), the upper end of the sedimentation tank body (31) is connected to a water inlet pipe (32), the lower end of the sedimentation tank body (31) is connected to a water outlet pipe (33), a first on-off valve (38) is fixedly installed on the water inlet pipe (32), and a second on-off valve (39) is fixedly installed on the water outlet pipe (33).

4. A wastewater treatment device according to claim 3, characterized in that: A filter channel (34) is fixedly connected to the side end surface of the sedimentation tank body (31), and the filter channel (34) is connected to the interior of the sedimentation tank body (31). A filter clamping plate 1 (36) is fixedly connected to the bottom surface of the inner wall of the filter channel (34), and a filter clamping plate 2 (37) is fixedly connected to the top surface of the inner wall of the filter channel (34). Circular through holes are provided on the filter clamping plate 1 (36) and the filter clamping plate 2 (37).

5. A wastewater treatment device according to claim 3, characterized in that: A connecting pipe 1 (310) is fixedly connected to and communicated with the sedimentation tank body (31), and a connecting pipe 2 (311) is fixedly connected to and communicated with the water outlet pipe (33). A pipeline on-off valve 1 is fixedly installed on one end of the connecting pipe 1 (310) close to the sedimentation tank body (31), and a pipeline on-off valve 2 is fixedly installed on one end of the connecting pipe 2 (311) close to the water outlet pipe (33). A velocity measuring tube (312) is connected between the connecting pipe 1 (310) and the connecting pipe 2 (311), and a flow meter is fixedly installed in the velocity measuring tube (312). A pump (313) is fixedly installed on one end of the connecting pipe 2 (311) close to the velocity measuring tube (312).

6. A wastewater treatment device according to claim 2, characterized in that: The filter mechanism (12) comprises a channel cover plate (121), a mechanism connecting plate (124) fixedly connected to one end surface of the channel cover plate (121), a filter hoop (125) fixedly connected to the mechanism connecting plate (124), a filter screen fixedly connected to the filter hoop (125), a sealing rubber ring (126) fixedly connected to both upper and lower end surfaces of the filter hoop (125), and a cover plate sealing ring (123) corresponding to the opening of the filter channel (34) fixedly connected to the channel cover plate (121).

7. A wastewater treatment device according to claim 2, characterized in that: Both ends of the outer side of the filter channel (34) are fixedly connected with fixed protrusions (35), and both ends of the channel cover plate (121) are fixedly connected with docking protrusions (122) corresponding to the fixed protrusions (35). A threaded hole is provided on the fixed protrusion (35), and a connecting through hole is provided through the docking protrusion (122). A screw is provided between the fixed protrusion (35) and the docking protrusion (122), and the screw passes through the connecting through hole on the docking protrusion (122) and is threadedly connected to the threaded hole on the fixed protrusion (35).

8. A wastewater treatment device according to claim 2, characterized in that: The gas balancing mechanism (8) includes a storage tank (81), and the storage tank (81) is respectively connected to a connecting pipe 1 (82) and a connecting pipe 2 (83). The storage tank (81) is connected to the MBfR main reactor (9) through the connecting pipe 1 (82) and the connecting pipe 2 (83). A delivery pump 1 (84) is fixedly installed on the connecting pipe 1 (82), and a delivery pump 2 (85) is fixedly installed on the connecting pipe 2 (83).

Images