Integrated sewage treatment membrane bioreactor and sewage treatment method

Abstract

The present invention relates to the technical field of membrane bioreactors, and discloses an integrated sewage treatment membrane bioreactor and a sewage treatment method. The reactor includes a treatment tank, wherein a pretreatment unit and a membrane treatment unit are arranged inside the treatment tank, wherein the membrane treatment unit includes a bracket, a pump body is fixedly installed on the top of the treatment tank, a channel is arranged inside the bracket, and the extraction end of the pump body is connected to the channel through an extraction pipe. The present invention can achieve a pair of clamps that cooperate to move after the membrane wire breaks to clamp the root of the membrane wire, so that the membrane wire is sealed after breaking, thereby preventing sewage from entering the membrane wire without being filtered through the filter hole and contaminating the entire membrane treatment unit, and can protect the clamps to prevent impurities from accumulating on the surface thereof, and can cancel the protection of the clamps when in use, so that the clean clamps are exposed to the outside, so that the subsequent clamps will not be affected by impurities when clamping and sealing the membrane wire, so that the sealing effect of the membrane wire is better.

Description

Technical Field

[0001] The invention belongs to the technical field of membrane bioreactors, and in particular relates to an integrated sewage treatment membrane bioreactor and a sewage treatment method. Background Art

[0002] In the field of sewage treatment and water resource reuse, MBR, also known as membrane bioreactor, is a new water treatment technology that combines a membrane separation unit with a biological treatment unit.

[0003] Membrane-bioreactor is a new type of wastewater treatment system that organically combines membrane separation technology with biological treatment technology. The membrane components replace the terminal secondary sedimentation tank of traditional biological treatment technology, maintain a high concentration of activated sludge in the bioreactor, increase the organic load of biological treatment, thereby reducing the area occupied by sewage treatment facilities and reducing the amount of residual sludge by maintaining a low sludge load.

[0004] When the existing membrane bioreactor is in use, the membrane fibers inside are affected by impurities and sharp objects in the sewage for a long time, causing them to break. When the breaks occur, a large amount of sewage that has not been filtered through the filter holes on the surface of the membrane fibers will enter the membrane fibers, contaminating the subsequent treatment units and causing huge losses.

[0005] Therefore, it is necessary to invent an integrated sewage treatment membrane bioreactor and a sewage treatment method to solve the above problems. Summary of the invention

[0006] In view of the above problems, the present invention provides an integrated sewage treatment membrane bioreactor and a sewage treatment method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An integrated sewage treatment membrane bioreactor comprises a treatment tank, wherein a pretreatment unit and a membrane treatment unit are arranged inside the treatment tank, wherein the membrane treatment unit comprises a bracket, a pump body is fixedly installed on the top of the treatment tank, a channel is arranged inside the bracket, the extraction end of the pump body is communicated with the channel through an extraction pipe, installation boxes communicated with the channel are equidistantly arranged on the top and bottom of the bracket, the interior of the installation box is filled with sealant, a carrier plate is equidistantly fixedly installed on the side of the installation box facing the center of the bracket, membrane threads are equidistantly inserted on the carrier plate, both ends of the membrane threads extend to the interior of the installation box through the sealant, the membrane threads are fixed by the sealant, a round cover corresponding to the membrane threads is fixedly installed on the carrier plate, the membrane threads pass through the round cover, a sealing ring is arranged at the position where the membrane threads pass through the round cover, a round shell is slidably arranged inside the round cover, the round shell is fixedly sleeved on the outside of the membrane threads, the round shell is fixedly connected to the inner wall of the round cover on the side facing the center of the bracket through a first spring, and a closing component for clamping and closing the root of the membrane threads after the membrane threads are broken is arranged inside the round shell.

[0009] Furthermore, the closing component includes a mounting shell symmetrically and fixedly mounted on the inner wall of the circular shell, a limiting groove being provided on the top wall of the mounting shell, a limiting block being slidably mounted in the limiting groove, a sliding rod being slidably inserted inside the mounting shell, the sliding rod being fixedly connected to the limiting block, one end of the sliding rod close to the membrane wire extending through the mounting shell to the outside thereof and fixedly connected to a splint, an end of the sliding rod away from the splint is provided with a limiting component for limiting the sliding rod, and the end of the sliding rod away from the splint is provided with a second spring.

[0010] Furthermore, the limiting component includes an iron rod fixedly connected to the end of the sliding rod away from the clamping plate, the second spring is sleeved outside the iron rod, the inner wall of the round cover is provided with an annular groove, a magnet ring cooperating with the iron rod is fixedly installed in the annular groove, the membrane wire is located in a partially bent arrangement between the lower round shell and the carrier plate, and one end of the iron rod passes through the round shell and is adsorbed by the magnet ring.

[0011] Furthermore, the bottom wall of the circular shell is symmetrically fixed with side plates, both ends of the clamping plate are fitted with the side plates, the inner sides of the side plates are symmetrically provided with transverse grooves, a connecting plate is fixedly installed on the side of the clamping plate close to the transverse groove, the connecting plate extends into the transverse groove, round rollers are rotatably installed between the two upper connecting plates and the two lower connecting plates, a rotating assembly for driving the rotation of the round rollers is provided at the ends of the round rollers, the upper and lower round rollers are connected by a sealing film, and the sealing film is fitted with the outer sides of the clamping plate.

[0012] Furthermore, the rotating assembly includes a gear fixedly connected to the end of the round roller, and the inner wall of the transverse groove is provided with teeth meshing with the gear.

[0013] Furthermore, the filtering holes of the membrane thread are distributed in the area between the two circular covers.

[0014] Furthermore, the first spring can overcome the attraction between the iron rod and the magnet ring to slide the round shell along the round cover.

[0015] The present invention also provides a sewage treatment method using the integrated sewage treatment membrane bioreactor as described above, comprising the following steps:

[0016] S1. During use, the sewage is pretreated by the pretreatment unit and then enters the membrane treatment unit;

[0017] S2. Start the pump body to cooperate with the extraction pipe, channel, installation box, and membrane wire to extract sewage. The sewage is filtered through the filter holes on the membrane wire and enters the inside of the membrane wire. It is discharged to the outside through the installation box, channel, extraction pipe, and pump body to complete the sewage treatment. During this process, the aeration pipe is connected to the external aeration equipment for aeration, so that the membrane wire can shake, thereby shedding the sludge on its surface;

[0018] S3. If the membrane filament breaks during this process, the compressed first spring releases its force to move the round shell and the membrane filament toward the carrier plate, and then cooperates with the sealing component to clamp and seal the root of the membrane filament, so that the membrane filament is sealed after breaking, thereby preventing sewage from entering the membrane filament without being filtered through the filter holes and polluting the entire membrane treatment unit.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention can achieve the clamping of the root of the membrane wire by a pair of clamping plates that move in coordination after the membrane wire breaks, so that the membrane wire is sealed after breaking, thereby preventing sewage from entering the membrane wire without being filtered through the filter holes and contaminating the entire membrane treatment unit;

[0021] 2. The present invention can protect the splint to prevent impurities from accumulating on its surface. The protection of the splint can be cancelled when in use, so that the clean splint is exposed to the outside, so that the subsequent splint will not be affected by impurities when clamping the closed membrane filament, so that the sealing effect of the membrane filament is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure diagram of the integrated sewage treatment membrane bioreactor and sewage treatment method according to the embodiment of the present invention is shown. Figure 1 ;

[0023] Figure 2 The structure diagram of the integrated sewage treatment membrane bioreactor and sewage treatment method according to the embodiment of the present invention is shown. Figure 2 ;

[0024] Figure 3A schematic diagram showing the structure of a stent and a membrane filament combination according to an embodiment of the present invention is shown;

[0025] Figure 4 A schematic cross-sectional view of a stent and a partial membrane filament assembly according to an embodiment of the present invention is shown;

[0026] Figure 5 The embodiment of the present invention is shown Figure 4 The enlarged structural diagram at A in the middle;

[0027] Figure 6 The embodiment of the present invention is shown Figure 5 The enlarged structural diagram at B in the middle;

[0028] Figure 7 A schematic structural diagram of a round cover and a round shell combination according to an embodiment of the present invention is shown;

[0029] Figure 8 The embodiment of the present invention is shown Figure 7 The enlarged structural diagram at C in the middle;

[0030] In the figure: 1. treatment tank; 2. bracket; 3. pump body; 4. extraction tube; 5. installation box; 6. sealant; 7. membrane wire; 8. carrier plate; 9. round cover; 10. round shell; 11. first spring; 12. installation shell; 13. limit block; 14. slide bar; 15. clamping plate; 16. side plate; 17. sealing ring; 18. iron rod; 19. second spring; 20. magnet ring; 21. connecting plate; 22. round roller; 23. sealing membrane; 24. gear; 25. teeth. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0032] The present invention provides an integrated sewage treatment membrane bioreactor, such as Figures 1 to 8As shown, it includes a treatment tank 1, and a pretreatment unit and a membrane treatment unit are arranged inside the treatment tank 1. The pretreatment unit is the same as the pretreatment unit in the integrated sewage treatment membrane bioreactor in the prior art, and can perform sewage pretreatment. The membrane treatment unit includes a bracket 2, and a plurality of aeration pipes are arranged at the bottom of the bracket 2. A pump body 3 is fixedly installed on the top of the treatment tank 1, and a channel is arranged inside the bracket 2. The extraction end of the pump body 3 is connected to the channel through an extraction pipe 4. The top and bottom of the bracket 2 are equidistantly provided with installation boxes 5 connected to the channel, and the interior of the installation box 5 is filled with sealant 6. The installation box 5 is fixedly installed equidistantly on one side toward the center of the bracket 2. A carrier plate 8 is fixedly installed, and membrane threads 7 are equidistantly inserted on the carrier plate 8. Both ends of the membrane threads 7 pass through the sealant 6 and extend to the inside of the installation box 5. The membrane threads 7 are fixed by the sealant 6. A round cover 9 corresponding to the membrane threads 7 is fixedly installed on the carrier plate 8. The membrane threads 7 pass through the round cover 9. A sealing ring 17 is provided at the place where the round cover 9 is passed by the membrane threads 7. A round shell 10 is slidably provided inside the round cover 9. The round shell 10 is fixedly sleeved on the outside of the membrane threads 7. The side of the round shell 10 facing the center of the bracket 2 is fixedly connected to the inner wall of the round cover 9 through the first spring 11. The inside of the round shell 10 is provided with a closing component for clamping and closing the root of the membrane threads 7 when the membrane threads 7 are broken.

[0033] During use, the sewage enters the membrane treatment unit after being pretreated by the pretreatment unit. At this time, the pump body 3 is started to cooperate with the extraction pipe 4, the channel, the installation box 5, and the membrane thread 7 to extract the sewage. The sewage enters the membrane thread 7 after being filtered through the filter holes on the membrane thread 7, and is discharged to the outside after passing through the installation box 5, the channel, the extraction pipe 4, and the pump body 3 to complete the treatment of the sewage. During this process, the aeration pipe is connected to the external aeration equipment for aeration, so that the membrane thread 7 can shake, thereby shedding the sludge on its surface. If the membrane thread 7 breaks during this process, the compressed first spring 11 releases the force to move the round shell 10 and the membrane thread 7, so that it moves in the direction close to the carrier plate 8, and then cooperates with the closing component to clamp and close the root of the membrane thread 7, so that the membrane thread 7 is closed after breaking, thereby preventing the sewage from entering the membrane thread 7 without being filtered through the filter holes and polluting the entire membrane treatment unit.

[0034] like Figure 5 and Figure 6 As shown, the closing component includes a mounting shell 12 symmetrically fixedly mounted on the inner wall of the circular shell 10, a limit groove is provided on the top wall of the mounting shell 12, a limit block 13 is slidably mounted in the limit groove, a slide rod 14 is slidably inserted into the interior of the mounting shell 12, the slide rod 14 is fixedly connected to the limit block 13, one end of the slide rod 14 close to the membrane wire 7 passes through the mounting shell 12 and extends to the outside thereof where a splint 15 is fixedly connected, a limit component for limiting the slide rod 14 is provided at one end away from the splint 15, and a second spring 19 is provided at one end of the slide rod 14 away from the splint 15.

[0035] When the round shell 10 moves toward the direction approaching the carrier plate 8, the mounting shell 12, the slide rod 14 and the clamping plate 15 move with it. Then, the limiting component cancels the restriction on the slide rod 14, and the compressed second spring 19 releases the force to move the slide rod 14 and the clamping plate 15 toward the direction approaching the membrane wire 7. The two clamping plates 15 clamp the membrane wire 7 so that the membrane wire 7 is clamped and closed.

[0036] like Figure 5 As shown, the limiting component includes an iron rod 18 fixedly connected to the end of the sliding rod 14 away from the clamping plate 15, the second spring 19 is sleeved on the outside of the iron rod 18, the inner wall of the round cover 9 is provided with an annular groove, and a magnet ring 20 cooperating with the iron rod 18 is fixedly installed in the annular groove. The part of the membrane wire 7 located between the lower round shell 10 and the carrier plate 8 is bent, so that when the membrane wire 7 swings, its bent part can provide it with a swinging space. When the membrane wire 7 swings, it will pull the lower round shell 10 up and compress the first spring 11. During the whole process, the iron rod 18 is adsorbed by the magnet ring 20, and one end of the iron rod 18 passes through the round shell 10 and is adsorbed by the magnet ring 20.

[0037] The slide bar 14 moves toward the direction approaching the carrier plate 8 and moves with the iron rod 18. One end of the iron rod 18 slides along the magnet ring 20. When the iron rod 18 is separated from the magnet ring 20, the compressed second spring 19 releases its force and moves the slide bar 14 and the clamping plate 15 toward the direction approaching the membrane wire 7.

[0038] like Figures 6 to 8 As shown, the bottom wall of the circular shell 10 is symmetrically fixed with side plates 16, both ends of the clamping plate 15 are in contact with the side plates 16, and transverse grooves are symmetrically provided on the inner side of the side plates 16. A connecting plate 21 is fixedly installed on the side of the clamping plate 15 close to the transverse groove, and the connecting plate 21 extends into the transverse groove. Round rollers 22 are rotatably installed between the two opposite connecting plates 21 above and the two opposite connecting plates 21 below, and a rotating assembly for driving the rotation of the round rollers 22 is provided at the ends of the round rollers 22. The upper and lower round rollers 22 are connected by a sealing film 23, and the sealing film 23 is in contact with the outer side of the clamping plate 15.

[0039] With long-term use, some fine impurities will adhere to the side of the splint 15 close to the membrane thread 7 and accumulate. When the two splints 15 clamp and seal the membrane thread 7, the accumulated impurities are stuck between the two splints 15, affecting the clamping and sealing effect of the splint 15 on the membrane thread 7. Therefore, the impurities are isolated by the sealing film 23 so that the impurities will not remain on the surface of the splint 15. When the slide bar 14 moves in the direction close to the membrane thread 7, it moves with the connecting plate 21 and the round roller 22. The rotating assembly drives the round roller 22 to rotate. The rotation of the two round rollers 22 in opposite directions causes the sealing film 23 to be rolled up, thereby tearing the sealing film 23 and then rolling it up. Finally, the side of the splint 15 close to the membrane thread 7 is exposed to the outside. At this time, the outer side of the splint 15 is clean and free of impurities. Therefore, the subsequent clamping and sealing of the membrane thread 7 will not be affected by impurities, so that the sealing effect of the membrane thread 7 is better.

[0040] like Figure 8 As shown, the rotating assembly includes a gear 24 fixedly connected to the end of the round roller 22, and the inner wall of the transverse groove is provided with teeth 25 meshing with the gear 24.

[0041] The round roller 22 moves with the connecting plate 21 and drives the gear 24 to move along the teeth 25. The gear 24 rolls and drives the round roller 22 to rotate. The two round rollers 22 rotate in opposite directions to tear the sealing film 23 for winding.

[0042] like Figure 5 As shown, the filter holes of the membrane thread 7 are distributed in the area between the two circular covers 9.

[0043] like Figure 5 As shown, the first spring 11 can overcome the attraction between the iron rod 18 and the magnet ring 20 to slide the round shell 10 along the round cover 9.

[0044] This ensures that the first spring 11 can move with the round shell 10 and the iron rod 18 until the iron rod 18 is separated from the magnet ring 20 .

[0045] The present invention also provides a sewage treatment method using the above-mentioned integrated sewage treatment membrane bioreactor, comprising the following steps:

[0046] S1. During use, the sewage is pretreated by the pretreatment unit and then enters the membrane treatment unit;

[0047] S2, start the pump body 3 to cooperate with the extraction pipe 4, channel, installation box 5, membrane filament 7 to extract sewage, the sewage is filtered through the filter holes on the membrane filament 7 and enters the inside of the membrane filament 7, and then is discharged to the outside through the installation box 5, channel, extraction pipe 4, pump body 3 to complete the sewage treatment. In this process, the aeration pipe is connected to the external aeration equipment for aeration, so that the membrane filament 7 can shake, thereby shedding the sludge on its surface;

[0048] S3. If the membrane filament 7 breaks during this process, the compressed first spring 11 releases its force to move the round shell 10 and the membrane filament 7 toward the carrier plate 8, and then cooperates with the sealing component to clamp and seal the root of the membrane filament 7, so that the membrane filament 7 is sealed after breaking, thereby preventing sewage from entering the membrane filament 7 without being filtered through the filter holes and polluting the entire membrane treatment unit.

[0049] Working principle: When in use, the sewage is pretreated by the pretreatment unit and then enters the membrane treatment unit. At this time, the pump body 3 is started to cooperate with the extraction pipe 4, the channel, the installation box 5, and the membrane wire 7 to extract the sewage. The sewage is filtered through the filter holes on the membrane wire 7 and enters the inside of the membrane wire 7. After passing through the installation box 5, the channel, the extraction pipe 4, and the pump body 3, it is discharged to the outside to complete the sewage treatment. In this process, the aeration pipe is connected to the external aeration equipment for aeration, so that the membrane wire 7 can shake, thereby shedding the sludge on its surface. If in this process The membrane wire 7 breaks, and the compressed first spring 11 releases its force to move the round shell 10 and the membrane wire 7, so that they move in the direction close to the carrier plate 8. When the round shell 10 moves in the direction close to the carrier plate 8, it moves with the mounting shell 12, the slide bar 14, and the clamping plate 15, so that the iron rod 18 moves accordingly, and one end of the iron rod 18 slides along the magnet ring 20. When the iron rod 18 is separated from the magnet ring 20, the compressed second spring 19 releases its force to move the slide bar 14 and the clamping plate 15 in the direction close to the membrane wire 7. The two clamping plates 15 press the membrane wire 7. The membrane filaments 7 are clamped and sealed, so that the membrane filaments 7 are sealed after being broken, thereby preventing sewage from entering the membrane filaments 7 without being filtered through the filter holes and polluting the entire membrane treatment unit; with long-term use, some fine impurities will adhere to the side of the clamping plate 15 close to the membrane filaments 7 and accumulate. When the two clamping plates 15 clamp and seal the membrane filaments 7, the accumulated impurities are stuck between the two clamping plates 15, affecting the clamping and sealing effect of the clamping plates 15 on the membrane filaments 7. Therefore, the impurities are isolated by the sealing film 23 so that the impurities will not remain on the clamping plates 15. On the surface, when the sliding rod 14 moves in the direction close to the membrane thread 7, the connecting plate 21 and the round roller 22 move with it. The round roller 22 moves with the connecting plate 21 and drives the gear 24 to move along the teeth 25. The gear 24 rolls and drives the round roller 22 to rotate. The two round rollers 22 rotate in opposite directions to tear the sealing film 23 for winding. Finally, the side of the splint 15 close to the membrane thread 7 is exposed to the outside. At this time, the outside of the splint 15 is clean and free of impurities. Therefore, the subsequent clamping and sealing of the membrane thread 7 will not be affected by impurities, so that the sealing effect of the membrane thread 7 is better.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An integrated sewage treatment membrane bioreactor, comprising a treatment tank (1), characterized in that: The treatment pool (1) is provided with a pretreatment unit and a membrane treatment unit inside. The membrane treatment unit comprises a bracket (2). A pump body (3) is fixedly installed on the top of the treatment pool (1). A channel is provided inside the bracket (2). The extraction end of the pump body (3) is connected to the channel through an extraction pipe (4). The top and bottom of the bracket (2) are equidistantly provided with installation boxes (5) connected to the channel. The interior of the installation box (5) is filled with sealant (6). A carrier plate (8) is equidistantly fixedly installed on one side of the installation box (5) facing the center of the bracket (2). Membrane threads (7) are equidistantly inserted on the carrier plate (8). Both ends of the membrane threads (7) extend through the sealant (6). To the inside of the installation box (5), the membrane wire (7) is fixed by the sealant (6), a round cover (9) corresponding to the membrane wire (7) is fixedly installed on the carrier plate (8), the membrane wire (7) passes through the round cover (9), and a sealing ring (17) is provided at the part of the round cover (9) where the membrane wire (7) passes through, a round shell (10) is slidably provided inside the round cover (9), the round shell (10) is fixedly sleeved on the outside of the membrane wire (7), the side of the round shell (10) facing the center of the bracket (2) is fixedly connected to the inner wall of the round cover (9) through a first spring (11), and a sealing component is provided inside the round shell (10) for clamping and sealing the root of the membrane wire (7) when the membrane wire (7) is broken; The closure assembly comprises a mounting shell (12) symmetrically fixedly mounted on the inner wall of the circular shell (10), a limit groove being provided on the top wall of the mounting shell (12), a limit block (13) being slidably mounted in the limit groove, a slide rod (14) being slidably inserted into the interior of the mounting shell (12), the slide rod (14) being fixedly connected to the limit block (13), an end of the slide rod (14) close to the membrane wire (7) passing through the mounting shell (12) and extending to the outside thereof where a clamping plate (15) is fixedly connected, an end of the slide rod (14) away from the clamping plate (15) is provided with a limit assembly for limiting the slide rod (14), and an end of the slide rod (14) away from the clamping plate (15) is provided with a second spring (19); The limiting assembly comprises an iron rod (18) fixedly connected to the end of the slide bar (14) away from the clamping plate (15), the second spring (19) is sleeved outside the iron rod (18), the inner wall of the circular cover (9) is provided with an annular groove, a magnet ring (20) matched with the iron rod (18) is fixedly installed in the annular groove, the membrane wire (7) is located between the lower circular shell (10) and the carrier plate (8) and the part is bent, and one end of the iron rod (18) passes through the circular shell (10) and is adsorbed by the magnet ring (20); The first spring (11) can overcome the suction force between the iron rod (18) and the magnet ring (20) to carry the round shell (10) to slide along the round cover (9).

2. The integrated sewage treatment membrane bioreactor according to claim 1, characterized in that: The bottom wall of the circular shell (10) is symmetrically fixed with side plates (16), both ends of the clamping plate (15) are in contact with the side plates (16), the inner side of the side plates (16) is symmetrically provided with transverse grooves, a connecting plate (21) is fixedly installed on the side of the clamping plate (15) close to the transverse groove, the connecting plate (21) extends into the transverse groove, and round rollers (22) are rotatably installed between the two upper opposite connecting plates (21) and between the two lower opposite connecting plates (21), and a rotating assembly for driving the rollers (22) to rotate is provided at the ends of the rollers (22), and the upper and lower rollers (22) are connected by a sealing film (23), and the sealing film (23) is in contact with the outer side of the clamping plate (15); When the slide bar (14) moves in a direction close to the membrane thread (7), the connecting plate (21) and the round roller (22) move therewith, and the rotating assembly drives the round roller (22) to rotate. The two round rollers (22) rotate in opposite directions to reel in the sealing film (23), thereby tearing the sealing film (23) and then reeling it in. Finally, the side of the clamping plate (15) close to the membrane thread (7) is exposed to the outside.

3. The integrated sewage treatment membrane bioreactor according to claim 2, characterized in that: The rotating assembly comprises a gear (24) fixedly connected to the end of the round roller (22), and the inner wall of the transverse groove is provided with teeth (25) meshing with the gear (24).

4. The integrated sewage treatment membrane bioreactor according to claim 3, characterized in that: The filtering holes of the membrane thread (7) are distributed in the area between the two circular covers (9).

5. A sewage treatment method using the integrated sewage treatment membrane bioreactor according to claim 4, characterized in that: The steps include: S1. During use, the sewage is pretreated by the pretreatment unit and then enters the membrane treatment unit; S2, starting the pump body (3) so that it cooperates with the extraction pipe (4), the channel, the installation box (5), and the membrane thread (7) to extract sewage. The sewage is filtered through the filter holes on the membrane thread (7) and enters the membrane thread (7). It is then discharged to the outside through the installation box (5), the channel, the extraction pipe (4), and the pump body (3), thereby completing the sewage treatment. During this process, the aeration pipe is connected to the external aeration equipment for aeration, so that the membrane thread (7) can shake, thereby shedding the sludge on its surface. S3. If the membrane filament (7) breaks during this process, the compressed first spring (11) releases its force to move the round shell (10) and the membrane filament (7) toward the carrier plate (8), and then cooperates with the sealing component to clamp and seal the root of the membrane filament (7), so that the membrane filament (7) is sealed after breaking, thereby preventing sewage from entering the membrane filament (7) without being filtered through the filter holes and contaminating the entire membrane treatment unit.

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