Anaerobic treatment device for pig wastewater

Abstract

The application discloses an anaerobic treatment device for pig raising wastewater and relates to the technical field of pig raising wastewater. The anaerobic treatment device for pig raising wastewater comprises a pretreatment box, a filter box, an anaerobic treatment tank and a connecting pipe, the bottom of the filter box is fixedly provided with the connecting pipe, one end of the connecting pipe extends into the interior of the anaerobic treatment tank, and the other end of the connecting pipe extends into the interior of the filter box. The anaerobic treatment device for pig raising wastewater can realize ladder type filtration treatment on large-particle sludge contained in the pig raising wastewater through the treatment plate, can grade-intercept large-particle sludge impurities with different particle sizes in the wastewater, reduces the direct entry of the large-particle sludge into the subsequent anaerobic treatment unit, avoids the blockage of subsequent treatment components caused by the accumulation of the large-particle sludge, reduces the treatment load of the rear-end anaerobic treatment process, reduces the risk of equipment failure shutdown of the rear-end equipment, guarantees the treatment flux of the whole device, reduces the adverse influence of large impurities on the reaction environment of anaerobic bacteria groups, and maintains the stability of the anaerobic treatment working condition.

Description

Technical Field

[0001] This invention relates to the field of pig farm wastewater technology, and in particular to an anaerobic treatment device for pig farm wastewater. Background Technology

[0002] Anaerobic treatment has a wide range of applications, especially suitable for treating high-concentration organic wastewater. For example, wastewater from industries such as food processing, brewing, papermaking, and pharmaceuticals often contains large amounts of organic matter at high concentrations, and direct discharge would cause serious environmental pollution. Through anaerobic treatment, the organic matter in this wastewater can be effectively removed, and the biogas produced can be recovered and reused as an energy source, reducing treatment costs and improving resource utilization efficiency.

[0003] Currently, some anaerobic treatment devices lack a dedicated staged filtration and removal mechanism at the inlet. When wastewater directly enters the anaerobic reactor for treatment, large particles of sludge, solid residues, and other impurities cannot be effectively retained and removed, directly entering the anaerobic reaction system. The continuous accumulation of large amounts of solid particles inside the reactor not only occupies the reactor's effective volume and clogs the water distribution structure and sludge bed, causing uneven water distribution and poor sludge-water mixing, but also inhibits the activity of anaerobic microorganisms, destroys the anaerobic bacterial community's living environment, and significantly reduces the efficiency of organic matter degradation. Ultimately, this leads to a significant decrease in the overall anaerobic wastewater treatment effect, resulting in substandard effluent quality and poor equipment operational stability and wastewater treatment practicality. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an anaerobic treatment device for pig farm wastewater, which can solve the problem that large particles of sludge, solid residues and other impurities contained in the water cannot be effectively intercepted and removed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an anaerobic treatment device for pig farm wastewater, comprising a pretreatment box, a filter box, an anaerobic treatment tank, and a connecting pipe. A connecting pipe is fixedly installed at the bottom of the filter box, with one end extending into the interior of the anaerobic treatment tank and the other end extending into the filter box, to facilitate the smooth transport of pretreated and filtered wastewater to the anaerobic treatment tank for anaerobic reaction. A treatment assembly is mounted on the pretreatment box, comprising a treatment plate. Treatment plates are fixedly installed on the inner walls of both sides of the pretreatment box, and the top of the treatment plate has stepped protrusions. The stepped design effectively disperses the impact force of the water flow, prevents the accumulation of large particles, improves interception efficiency, and reduces the solid load of subsequent treatment units. A filter assembly is mounted on the pretreatment box, comprising four sets of filter plates, all located inside the filter box. A hydrodynamic assembly is mounted on the pretreatment box, comprising a rotating rod and a water turbine blade, with the water turbine blade located on the outer wall of the rotating rod.

[0006] Preferably, the treatment assembly further includes a mud receiving plate. The mud receiving plate is fixedly installed on the front inner wall and the rear inner wall of the pretreatment box. The mud receiving plate is inclined. A door is hinged to the rear side of the pretreatment box through a hinge. A handle is fixedly installed on the door to facilitate the operator to clean the sediment on the mud receiving plate regularly.

[0007] Preferably, the processing assembly further includes a pull rod, which is slidably mounted on the front side of the pretreatment box. One end of the pull rod extends into the interior of the pretreatment box and is fixedly mounted with a baffle. The rear side of the baffle contacts the front side of the processing plate. By pulling the pull rod, the opening and closing of the baffle can be controlled, facilitating the diversion of sludge accumulated on the processing plate into the sludge receiving plate area, thus improving cleaning convenience.

[0008] Preferably, the processing assembly further includes a cylinder fixedly installed on the inner front wall of the pretreatment box. A damping spring is fixedly installed on the inner front wall of the cylinder, a circular plate is fixedly installed on the rear side of the damping spring, and a sliding rod is fixedly installed on the rear side of the circular plate. One end of the sliding rod is fixedly installed to the front side of the baffle, and the cylinder and the sliding rod are slidably installed. This structure allows the baffle to automatically reset via the damping spring after being subjected to force, ensuring sealing and operational continuity.

[0009] Preferably, the pretreatment box has a strip-shaped opening at the top. A strip plate is fixedly installed on the front and rear inner walls of the strip-shaped opening. A sliding sleeve plate is slidably installed on the outer wall of the strip plate. A support rod is fixedly installed at the bottom of the sliding sleeve plate. An inclined plate is fixedly installed at the bottom of the support rod. A scraper is fixedly installed at the bottom of the inclined plate. The operator can move along the strip plate through the sliding sleeve plate to drive the scraper to scrape the surface of the treatment plate, thoroughly removing the sludge attached to the stepped protrusions and preventing blockage.

[0010] Preferably, a drain pipe is fixedly installed on one side of the pretreatment tank, with one end of the drain pipe extending into the interior of the pretreatment tank and the drain pipe located above the treatment plate. This ensures that when the water level is sufficient, the treated upper clear liquid can be discharged through the drain pipe and enter the next treatment stage.

[0011] Preferably, the filtration assembly further includes a high-pressure pump fixedly installed on the top of the pretreatment tank. An input pipe is fixedly installed at the input end of the high-pressure pump, and one end of the input pipe is fixedly connected to one end of the drain pipe. An output pipe is fixedly installed at the output end of the high-pressure pump. A transmission cylinder is fixedly installed on one side of the filter tank. One end of the output pipe extends into the interior of the transmission cylinder. A connecting pipe is fixedly installed at the bottom of the transmission cylinder. One end of the connecting pipe extends into the interior of the transmission cylinder, and the other end extends into the interior of the filter tank. The high-pressure pump pressurizes and delivers the pretreated wastewater to the transmission cylinder, and then introduces it into the filter tank through the connecting pipe, thereby achieving secondary fine filtration of the wastewater.

[0012] Preferably, filter plates are fixedly installed on the inner wall of the filter box, and the distance between the four sets of filter plates is equal.

[0013] Preferably, the hydrodynamic assembly further includes rotating rods fixedly installed on the inner walls of both sides of the transmission cylinder. Water impellers are fixedly installed on the outer walls of the rotating rods. Rotating rods are rotatably installed on the inner walls of both sides of the filter box. One end of each rotating rod is fixedly installed to the other. The rotation of the water impellers drives the cleaning plate to rotate, automatically scraping away impurities accumulated on the surface of the filter plate, preventing filter pore blockage, and ensuring filtration throughput and effectiveness. This structure utilizes the self-flowing power of wastewater, requiring no external power supply, saving energy, protecting the environment, and reducing operation and maintenance costs.

[0014] Preferably, a cleaning plate is fixedly installed on the outer wall of the rotating rod, one side of the cleaning plate is in contact with one side of the filter plate, and a drain pipe is fixedly installed at the bottom of the filter box, one end of the drain pipe extends into the interior of the filter box and a shut-off valve is provided on the drain pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This anaerobic treatment device for pig farm wastewater utilizes a treatment plate to achieve step-by-step filtration of large sludge particles within the wastewater. It effectively intercepts large sludge particles of varying sizes from the wastewater, reducing the direct entry of large sludge particles into subsequent anaerobic treatment units. This prevents the accumulation of large sludge particles that could clog downstream treatment components, reducing the processing load on downstream anaerobic processes, lowering the risk of equipment failure and downtime, ensuring the overall processing throughput of the device, minimizing the adverse effects of large impurities on the anaerobic microbial reaction environment, and maintaining stable anaerobic treatment conditions. Furthermore, scrapers clean the sludge trapped on the treatment plate, promptly removing accumulated sludge impurities from the plate surface. This prevents continuous sludge buildup that could clog the filter channels, increasing filtration resistance and reducing wastewater throughput efficiency. This ensures the treatment plate maintains stable filtration capacity over the long term, eliminating the need for complete disassembly of the treatment plate, simplifying sludge cleaning and maintenance, reducing operator workload, and minimizing equipment downtime for maintenance.

[0016] This anaerobic wastewater treatment device for pig farming utilizes filter plates to further filter the previously filtered wastewater, trapping fine particles and purifying the wastewater before it enters the anaerobic process. This reduces the flow of fine impurities into the downstream anaerobic treatment unit, preventing impurity accumulation from interfering with the anaerobic bacterial reaction environment, reducing the processing burden on the downstream anaerobic treatment unit, lowering the risk of downstream pipeline blockage, and ensuring the overall wastewater treatment effect of the device. Furthermore, the water impeller drives the rotating rod and the rotating shaft to rotate, which in turn drives the cleaning plate. The rotating cleaning plate cleans and scrapes away impurities accumulated on the filter plate, promptly removing attached and retained dirt, preventing continuous accumulation of impurities that could cause filter plate blockage, ensuring the filter plate's water flow capacity, maintaining a stable wastewater throughput, and reducing the decrease in treatment efficiency due to filter plate blockage. No manual disassembly of the filter plate is required for cleaning, reducing the labor intensity of manual maintenance. Furthermore, relying on the water flow power generated during the wastewater transportation process to drive the water turbine blades to rotate, there is no need to add additional independent drive components such as motors, which simplifies the overall device structure, reduces the investment in component procurement, lowers the production and manufacturing costs of the device, and does not require additional power consumption during operation, further reducing the actual operating cost of the equipment. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of the pretreatment box of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a cross-sectional view of the filter box of the present invention; Figure 5 For the present invention Figure 4 Side view; Figure 6 This is an enlarged view of part A of the present invention.

[0018] Reference numerals: 1. Pretreatment box; 2. Filter box; 3. Anaerobic treatment tank; 4. Connecting pipe; 5. Treatment component; 501. Treatment plate; 502. Drain pipe; 503. Sludge receiving plate; 504. Cylinder; 505. Damping spring; 506. Circular plate; 507. Sliding rod; 508. Strip plate; 509. Sliding sleeve plate; 510. Support rod; 511. Inclined plate; 512. Scraper; 513. Pull rod; 6. Filter component; 601. High-pressure pump; 602. Input pipe; 603. Output pipe; 604. Transmission cylinder; 605. Connecting pipe; 606. Filter plate; 7. Hydrodynamic component; 701. Rotating rod; 702. Water impeller; 703. Rotating rod; 704. Cleaning plate; 705. Sewage pipe. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] Please see Figure 1-6 An anaerobic treatment device for pig farm wastewater includes a pretreatment tank 1, a filter tank 2, an anaerobic treatment tank 3, and a connecting pipe 4. The connecting pipe 4 is fixedly installed at the bottom of the filter tank 2, with one end of the connecting pipe 4 extending into the interior of the anaerobic treatment tank 3 and the other end extending into the interior of the filter tank 2. A treatment assembly 5 is disposed on the pretreatment tank 1 and includes a treatment plate 501. The treatment plate 501 is fixedly installed on the inner walls of both sides of the pretreatment tank 1, and the top of the treatment plate 501 has a stepped protrusion. A filter assembly 6 is disposed on the pretreatment tank 1 and includes four filter plates 606, all of which are disposed inside the filter tank 2. A hydrodynamic assembly 7 is disposed on the pretreatment tank 1 and includes a rotating rod 701 and a water turbine blade 702, with the water turbine blade 702 located on the outer wall of the rotating rod 701.

[0021] Furthermore, the processing assembly 5 also includes a mud receiving plate 503. The mud receiving plate 503 is fixedly installed on the front and rear inner walls of the pretreatment box 1. The mud receiving plate 503 is inclined. A door is hinged to the rear side of the pretreatment box 1 via a hinge, and a handle is fixedly installed on the door. The processing assembly 5 also includes a pull rod 513. The pull rod 513 is slidably installed on the front side of the pretreatment box 1. One end of the pull rod 513 extends into the interior of the pretreatment box 1 and is fixedly fitted with a baffle. The rear side of the baffle is connected to the processing plate 501. The processing assembly 5 also includes a cylinder 504 fixedly installed on the inner front wall of the pretreatment box 1. A damping spring 505 is fixedly installed on the inner front wall of the cylinder 504, and a circular plate 506 is fixedly installed on the rear side of the damping spring 505. A sliding rod 507 is fixedly installed on the rear side of the circular plate 506. One end of the sliding rod 507 is fixedly installed on the front side of the baffle. The cylinder 504 and the sliding rod 507 are slidably installed. A strip-shaped opening is provided at the top of the pretreatment box 1. The inner front wall of the strip-shaped opening is in contact with the rear side. A strip plate 508 is fixedly installed on the inner wall, and a sliding sleeve plate 509 is slidably installed on the outer wall of the strip plate 508. A support rod 510 is fixedly installed at the bottom of the sliding sleeve plate 509, and an inclined plate 511 is fixedly installed at the bottom of the support rod 510. A scraper 512 is fixedly installed at the bottom of the inclined plate 511. A drain pipe 502 is fixedly installed on one side of the pretreatment box 1. One end of the drain pipe 502 extends into the interior of the pretreatment box 1 and is located above the treatment plate 501. The treatment plate 501 can perform step-by-step filtration treatment on the large sludge particles contained in the pig wastewater. It can intercept large sludge particles of different sizes in the wastewater in stages, reduce the direct entry of large sludge particles into the subsequent anaerobic treatment unit, avoid the accumulation of large sludge particles causing blockage of subsequent treatment components, reduce the treatment load of the downstream anaerobic treatment process, reduce the risk of downstream equipment failure and downtime, ensure the treatment throughput of the entire device, reduce the adverse effects of large impurities on the anaerobic bacterial reaction environment, and maintain the stability of the anaerobic treatment conditions. Furthermore, the scraper 512 can clean the sludge that is trapped on the treatment plate 501, and promptly remove the sludge and impurities that have accumulated on the surface of the treatment plate 501. This prevents the sludge from continuously adhering and accumulating, causing blockage of the filter channel of the treatment plate 501, and avoiding increased filtration resistance and reduced wastewater throughput efficiency. This ensures that the treatment plate 501 maintains a stable filtration capacity in the long term. There is no need to disassemble the entire treatment plate 501, which simplifies the sludge cleaning and maintenance process, reduces the labor intensity of operators, and reduces equipment downtime for maintenance.

[0022] Furthermore, the filter assembly 6 also includes a high-pressure pump 601 fixedly installed on the top of the pretreatment box 1. An input pipe 602 is fixedly installed at the input end of the high-pressure pump 601, and one end of the input pipe 602 is fixedly connected to one end of the drain pipe 502. An output pipe 603 is fixedly installed at the output end of the high-pressure pump 601. A transmission cylinder 604 is fixedly installed on one side of the filter box 2. One end of the output pipe 603 extends into the interior of the transmission cylinder 604. A connecting pipe 605 is fixedly installed at the bottom of the transmission cylinder 604. One end of the connecting pipe 605 extends into the interior of the transmission cylinder 604, and the other end of the connecting pipe 605 extends into the interior of the filter box 2. Filter plates 606 are fixedly installed on the inner wall of the filter box 2, and the distance between the four sets of filter plates 606 is equal.

[0023] Furthermore, the hydrodynamic component 7 also includes rotating rods 701 fixedly installed on the inner walls of both sides of the transmission cylinder 604. Water impellers 702 are fixedly installed on the outer wall of the rotating rods 701. Rotating rods 703 are rotatably installed on the inner walls of both sides of the filter box 2. One end of the rotating rod 701 is fixedly installed with one end of the rotating rod 703. A cleaning plate 704 is fixedly installed on the outer wall of the rotating rod 703. One side of the cleaning plate 704 contacts one side of the filter plate 606. A drain pipe 705 is fixedly installed at the bottom of the filter box 2. One end of the drain pipe 705 extends into the interior of the filter box 2, and a shut-off valve is provided on the drain pipe 705. The filter plate 606 can perform secondary filtration on the pig farm wastewater after the initial filtration, further intercepting residual fine impurities in the wastewater, further purifying the wastewater entering the anaerobic process, reducing the inflow of fine impurities into the downstream anaerobic treatment unit, preventing impurity accumulation from interfering with the reaction environment of the anaerobic bacteria, reducing the processing burden of the downstream anaerobic treatment unit, reducing the risk of downstream pipeline blockage, and ensuring the wastewater treatment effect of the entire device. The water impeller 702 drives the rotating rod 701 and the rotating rod 703 to rotate, which in turn drives the cleaning plate 704 to rotate. The rotation of the cleaning plate 704 can clean and scrape away the impurities accumulated on the filter plate 606, promptly removing the attached dirt and preventing the filter plate 606 from clogging due to continuous accumulation of impurities. This ensures the water filtration capacity of the filter plate 606, maintains a stable wastewater throughput, and reduces the decrease in treatment efficiency caused by clogging of the filter plate 606. There is no need for manual disassembly of the filter plate 606 for cleaning, reducing the labor intensity of manual maintenance. Furthermore, the water impeller 702 is driven by the water flow power generated during the wastewater transportation process, eliminating the need for additional independent drive components such as motors. This simplifies the overall device structure, reduces the investment in component procurement, lowers the production and manufacturing costs of the device, and requires no additional electricity consumption during operation, further reducing the actual operating cost of the equipment.

[0024] Working principle: The high-pressure pump 601 and anaerobic treatment tank 3 mentioned above are existing technologies, so their internal structure and control method do not need to be described in detail. In use, wastewater is transported to the interior of the pretreatment tank 1, and then the wastewater is filtered in a step-by-step manner through the treatment plate 501. Then, the high-pressure pump 601 is started to draw out the wastewater through the input pipe 602 and the drain pipe 502, and then discharged into the interior of the transmission cylinder 604 through the output pipe 603. Then, the wastewater is transported to the interior of the filter box 2 through the connecting pipe 605, and then filtered through the filter plate 606. Finally, it is transported to the interior of the anaerobic treatment tank 3 through the connecting pipe 4 for anaerobic treatment.

[0025] Furthermore, when the wastewater is transported into the transmission cylinder 604, the flow force of the wastewater drives the water turbine blade 702 to rotate. Subsequently, the water turbine blade 702 drives the rotating rod 701 to rotate. The rotation of the rotating rod 701 drives the rotating rod 703 and the cleaning plate 704 to rotate, thereby treating one side of the filter plate 606. When there is a lot of sludge accumulated on the treatment plate 501, the worker manually moves the sliding sleeve 509. The sliding sleeve 509 drives the support rod 510 and the inclined plate 511 to move. The movement of the inclined plate 511 drives the scraper 512 to move. The movement of the scraper 512 can scrape off the sludge on the top of the treatment plate 501. After the scraper 512 contacts the baffle, the scraper 512 can be moved to move the baffle. Then the baffle moves and the sludge will fall into the sludge receiving plate 503.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An anaerobic treatment device for pig farm wastewater, characterized in that, include: The pretreatment box (1), filter box (2), anaerobic treatment tank (3) and connecting pipe (4) are fixedly installed at the bottom of the filter box (2). One end of the connecting pipe (4) extends into the interior of the anaerobic treatment tank (3), and the other end of the connecting pipe (4) extends into the interior of the filter box (2). The processing component (5) is disposed on the pretreatment box (1). The processing component (5) includes a processing plate (501). The processing plate (501) is fixedly installed on the inner walls of both sides of the pretreatment box (1). The top of the processing plate (501) is provided with a stepped protrusion. The filter assembly (6) is located on the pretreatment box (1). The filter assembly (6) includes filter plates (606), and there are four sets of filter plates (606). All four sets of filter plates (606) are located inside the filter box (2). A hydrodynamic assembly (7) is provided on the pretreatment tank (1). The hydrodynamic assembly (7) includes a rotating rod (701) and a water turbine blade (702), with the water turbine blade (702) located on the outer wall of the rotating rod (701).

2. The anaerobic treatment device for pig farm wastewater according to claim 1, characterized in that: The processing component (5) also includes a mud receiving plate (503). The mud receiving plate (503) is fixedly installed on the front inner wall and the rear inner wall of the pretreatment box (1). The mud receiving plate (503) is inclined. A door is hinged to the rear side of the pretreatment box (1) through a hinge, and a handle is fixedly installed on the door.

3. The anaerobic treatment device for pig farm wastewater according to claim 2, characterized in that: The processing component (5) also includes a pull rod (513), which is slidably installed on the front side of the pretreatment box (1). One end of the pull rod (513) extends into the interior of the pretreatment box (1) and is fixedly installed with a baffle. The rear side of the baffle contacts the front side of the processing plate (501).

4. The anaerobic treatment device for pig farm wastewater according to claim 3, characterized in that: The processing component (5) also includes a cylinder (504) fixedly installed on the inner wall of the front side of the pretreatment box (1). A damping spring (505) is fixedly installed on the inner wall of the front side of the cylinder (504). A circular plate (506) is fixedly installed on the rear side of the damping spring (505). A sliding rod (507) is fixedly installed on the rear side of the circular plate (506). One end of the sliding rod (507) is fixedly installed on the front side of the baffle. The cylinder (504) and the sliding rod (507) are slidably installed.

5. The anaerobic treatment device for pig farm wastewater according to claim 4, characterized in that: The pretreatment box (1) has a strip-shaped opening at the top. A strip plate (508) is fixedly installed on the inner wall of the front side and the inner wall of the back side of the strip-shaped opening. A sliding sleeve plate (509) is slidably installed on the outer wall of the strip plate (508). A support rod (510) is fixedly installed at the bottom of the sliding sleeve plate (509). An inclined plate (511) is fixedly installed at the bottom of the support rod (510). A scraper (512) is fixedly installed at the bottom of the inclined plate (511).

6. The anaerobic treatment device for pig farm wastewater according to claim 5, characterized in that: A drain pipe (502) is fixedly installed on one side of the pretreatment box (1). One end of the drain pipe (502) extends into the interior of the pretreatment box (1) and the drain pipe (502) is located above the treatment plate (501).

7. The anaerobic treatment device for pig farm wastewater according to claim 6, characterized in that: The filter assembly (6) also includes a high-pressure pump (601) fixedly installed on the top of the pretreatment box (1). An input pipe (602) is fixedly installed at the input end of the high-pressure pump (601). One end of the input pipe (602) is fixedly connected to one end of the drain pipe (502). An output pipe (603) is fixedly installed at the output end of the high-pressure pump (601). A transmission cylinder (604) is fixedly installed on one side of the filter box (2). One end of the output pipe (603) extends into the interior of the transmission cylinder (604). A connecting pipe (605) is fixedly installed at the bottom of the transmission cylinder (604). One end of the connecting pipe (605) extends into the interior of the transmission cylinder (604), and the other end of the connecting pipe (605) extends into the interior of the filter box (2).

8. The anaerobic treatment device for pig farm wastewater according to claim 7, characterized in that: The filter box (2) is fixedly installed with filter plates (606), and the distance between the four sets of filter plates (606) is equal.

9. An anaerobic treatment device for pig farm wastewater according to claim 8, characterized in that: The hydrodynamic component (7) also includes a rotating rod (701) fixedly installed on the inner walls of both sides of the transmission cylinder (604). A water turbine blade (702) is fixedly installed on the outer wall of the rotating rod (701). A rotating rod (703) is rotatably installed on the inner walls of both sides of the filter box (2). One end of the rotating rod (701) is fixedly installed with one end of the rotating rod (703).

10. An anaerobic treatment device for pig farm wastewater according to claim 9, characterized in that: A cleaning plate (704) is fixedly installed on the outer wall of the rotating rod (703). One side of the cleaning plate (704) is in contact with one side of the filter plate (606). A drain pipe (705) is fixedly installed at the bottom of the filter box (2). One end of the drain pipe (705) extends into the interior of the filter box (2) and a shut-off valve is provided on the drain pipe (705).

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