Wastewater regeneration recycling system and use method thereof

Abstract

The invention discloses a wastewater regeneration recycling system and a using method thereof, and belongs to the field of aquaculture wastewater recycling, the wastewater regeneration recycling system comprises an aquaculture pond, a first partition wall is fixedly connected to the middle of the aquaculture pond, and a second partition wall is fixedly connected to the position, located on the front side of the first partition wall, of the middle of the aquaculture pond; an L-shaped guide frame is fixedly connected to the position, located at the rear end of the first partition wall, of the bottom of the breeding pond, a sewage passing hole is formed in the middle of the front end of the L-shaped guide frame, sludge at the bottom of the breeding pond can be scraped into the position between the L-shaped scraper and the L-shaped guide frame through the L-shaped scraper, and the sludge is compressed in the middle of the sewage storage groove through the rectangular rubber block; the extrusion effect of the rectangular rubber blocks enables the sewage to quickly pass through gaps among the microbial degradation biofilm culturing media, so that sludge does not need to be frequently and manually removed in the circulating process of the aquaculture wastewater, and elements such as nitrogen, phosphorus and nitrate in the wastewater can be biodegraded.

Description

Technical Field

[0001] The present invention relates to the field of recycling of aquaculture wastewater, and more specifically, to a wastewater regeneration and recycling system and a method for using the same. Background Art

[0002] With the progress and development of society, aquaculture has been increasingly recycling wastewater. The recycling of aquaculture wastewater can effectively reduce the waste of water resources.

[0003] The recycling of aquaculture wastewater requires wastewater treatment, which includes the removal of sludge and the removal of nitrogen, phosphorus, nitrate and other elements in the wastewater.

[0004] The common aquaculture wastewater circulation on the market requires manual scraping of the sludge on the bottom of the pond, and the flow rate of the wastewater will be affected when it relies on gravity to pass through the microbial biofilm medium, resulting in a decrease in the wastewater circulation treatment speed. Summary of the invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a wastewater regeneration and recycling system and a method of using the same, which can realize the scraping of sludge at the bottom of the aquaculture pond into the space between the L-shaped scraper and the L-shaped guide frame by an L-shaped scraper, and the compression of the sludge in the middle of the sewage storage tank by a rectangular rubber block, and the squeezing effect of the rectangular rubber block allows the sewage to quickly pass through the gaps between the microbial degradation biofilm media, so that there is no need to frequently remove the sludge manually during the circulation of aquaculture wastewater, and elements such as nitrogen, phosphorus, and nitrate in the wastewater can be biodegraded.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A wastewater recycling system comprises a breeding pond, wherein a first partition wall is fixedly connected to the middle of the breeding pond, a second partition wall is fixedly connected to the middle of the breeding pond located in front of the first partition wall, an L-shaped guide frame is fixedly connected to the bottom of the breeding pond located at the rear end of the first partition wall, a sewage hole is provided in the middle of the front end of the L-shaped guide frame, a U-shaped transfer frame is installed at the same height as the sewage hole in the middle of the first partition wall, a pumping module is fixedly installed at the rear end of the middle of the U-shaped transfer frame, and a pumping module is fixedly installed at the upper end of the middle of the U-shaped transfer frame A reset hinge is fixedly connected, a baffle is hinged in the middle of the reset hinge, the middle of the U-shaped transfer frame is located at the rear side of the baffle and fixedly connected to a limited block, the lower end of the middle of the U-shaped transfer frame is located at the front side of the baffle and has a through hole, the bottom of the breeding pond is located at the lower end of the through hole and has a U-shaped through hole, the bottom of the breeding pond is located at the rear side of the second partition wall and is disassembled and connected to a sewage storage tank, a rectangular hole is opened at the lower end of the second partition wall, a filter is fixedly connected in the middle of the rectangular hole, and the middle of the breeding pond is located at the front side of the second partition wall and is fixedly connected A perforated plate is provided, and a microbial degradation biofilm medium is placed in the middle of the breeding pond in front of the perforated plate. A placement groove is provided in the middle of the left and right ends of the breeding pond between the second partition wall and the perforated plate. Two pulleys are fixedly connected to the upper end of the second partition wall, and two pumps are fixedly installed on the upper end of the first partition wall. A U-shaped water pipe is installed at the output end of the pump. Linear modules are installed on the left and right parts of the breeding pond and the upper end of the first partition wall. The linear module is electrically connected to the pumping module and the pump. A collecting structure is installed between the two linear modules. A linkage structure is fixedly connected to the upper end of the breeding pond between the first partition wall and the second partition wall. The sludge collected at the bottom of the breeding pond is scraped into between the L-shaped scraper and the L-shaped guide frame by an L-shaped scraper, and the sludge is compressed in the middle of the sewage storage tank by a rectangular rubber block. The squeezing effect of the rectangular rubber block allows the sewage to quickly pass through the gaps between the microbial degradation biofilm medium, so that there is no need to frequently remove the sludge manually during the circulation of aquaculture wastewater, and elements such as nitrogen, phosphorus, and nitrate in the wastewater can be biodegraded.

[0008] Furthermore, the collecting structure includes a T-shaped rod and a rubber plate, the lower end of the T-shaped rod is fixedly connected to an L-shaped scraper, the left and right parts of the upper end of the L-shaped scraper are provided with adaptation holes, the middle of the adaptation hole is fixedly installed with a blocking net, the left and right ends of the rubber plate are fixedly connected to protrusions, the protrusion can be inserted into the middle of the placement groove, the upper end of the protrusion is fixedly connected to a compression spring, the upper end of the compression spring is fixedly connected to a limiting disk, two traction ropes are fixedly connected between the front upper end of the T-shaped rod and the upper end of the rubber plate, so that the sludge at the bottom of the breeding pond can be scraped off.

[0009] Furthermore, the linkage structure includes a U-shaped bracket, a spring telescopic rod is fixedly connected to the lower end of the middle part of the U-shaped bracket, a rectangular rubber block is fixedly connected to the lower end of the spring telescopic rod, a groove is opened at the lower front end of the rectangular rubber block, and a brush is fixedly connected to the middle part of the groove, so that the sewage between the first partition wall and the second partition wall can be squeezed into the microbial degradation biofilm medium.

[0010] Furthermore, the L-shaped guide frame and the L-shaped scraper can form a hollow rectangular frame, and the bottom of the L-shaped scraper is in contact with the inner wall of the aquaculture pond, so that the sludge can be concentrated between the L-shaped guide frame and the L-shaped scraper, and the L-shaped scraper can scrape off the sludge at the bottom of the aquaculture pond.

[0011] Furthermore, the linear module can drive the T-shaped rod to move, and the rubber plate is located between the second partition wall and the perforated plate, and the rubber plate can block the filter screen, so that the T-shaped rod can reciprocate.

[0012] Furthermore, the microbial degradation biofilm medium is granular, and the diameter of the particles is larger than the diameter of the holes in the perforated plate, and the U-shaped water pipe draws away the water on the upper side of the microbial degradation biofilm medium, thereby increasing the contact area between the sewage and the microbial degradation biofilm medium, and the microbial degradation biofilm medium is not easy to pass through the perforated plate, and the treated sewage can be recycled.

[0013] Furthermore, the middle part of the traction rope is sleeved on the outside of the pulley, and the compression spring is located in the placement groove, and the limit plate is fixedly connected to the upper end of the middle part of the placement groove, so that the traction rope can drive the rubber plate to move, and the compression spring can drive the rubber plate to reset downward.

[0014] Furthermore, the rectangular rubber block can block the space between the first partition wall, the second partition wall and the breeding pond, and the brush can contact the back side of the filter, so that the rectangular rubber block can squeeze the sewage between the first partition wall and the second partition wall through the filter, and the brush can scrape off the sludge attached to the back side of the filter.

[0015] The method for using the wastewater regeneration and recycling system comprises the following steps: S1. The staff adjusts and sets the linear module, pumping module and pump; S2. The staff pours the microbial biodegradable biofilm medium into the middle of the aquaculture pond in front of the perforated plate, and cultures the fish to be cultured in the middle of the aquaculture pond behind the first partition wall; S3. Regularly remove the sludge storage tank to clean the sludge.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This scheme uses an L-shaped scraper to scrape the sludge at the bottom of the aquaculture pond into the space between the L-shaped scraper and the L-shaped guide frame, and a rectangular rubber block to compress the sludge in the middle of the sludge storage tank. The squeezing effect of the rectangular rubber block allows the sewage to quickly pass through the gaps between the microbial degradation biofilm media, so that there is no need to frequently remove the sludge manually during the circulation of aquaculture wastewater, and elements such as nitrogen, phosphorus, and nitrate in the wastewater can be biodegraded.

[0017] (2) The two barrier nets are located on the left and right sides of the L-shaped scraper, so that when water flows through the barrier net and enters the sewage hole, it can bring the sludge into the sewage hole together. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a partial half-section stereoscopic view of the whole of the present invention; Figure 3 for Figure 2 A partial enlarged view of; Figure 4 It is an overall split stereogram of the present invention; Figure 5 It is a partial half-section stereoscopic view of a breeding pond of the present invention; Figure 6 It is a three-dimensional diagram of the collection structure of the present invention; Figure 7 It is a schematic diagram of a partial half-section front view of the whole of the present invention; Figure 8 for Figure 7 B is a partial enlarged view; Fig. 9 This is a schematic diagram of the working principle of the sewage discharge state of the aquaculture pond of the present invention; Fig.10 for Fig. 9 A partial enlarged view of C.

[0019] Description of the numbers in the figure: 1. Aquaculture pond; 2. First partition wall; 3. Second partition wall; 4. L-shaped guide frame; 5. Sewage hole; 6. U-shaped transfer frame; 7. Pumping module; 8. Reset hinge; 9. Baffle; 10. Limit block; 11. U-shaped through hole; 12. Sewage storage tank; 13. Filter screen; 14. Perforated plate; 15. Microbial degradation biofilm medium; 16. Placement tank; 17. Pulley; 18. Pump; 19. U-shaped water pipe; 20. Linear module; 21. T-shaped rod; 22. L-shaped scraper; 23. Blocking net; 24. Rubber sheet; 25. Bump; 26. Compression spring; 27. Limit plate; 28. Traction rope; 29. ​​U-shaped bracket; 30. Spring telescopic rod; 31. Rectangular rubber block; 32. Brush. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of the adapter model component. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-10A wastewater recycling system comprises a breeding pond 1, wherein a first partition wall 2 is fixedly connected to the middle of the breeding pond 1, a second partition wall 3 is fixedly connected to the middle of the breeding pond 1 in front of the first partition wall 2, an L-shaped guide frame 4 is fixedly connected to the bottom of the breeding pond 1 at the rear end of the first partition wall 2, a sewage hole 5 is provided in the middle of the front end of the L-shaped guide frame 4, a U-shaped transfer frame 6 is installed at the same height as the sewage hole 5 in the middle of the first partition wall 2, a pumping module 7 is fixedly installed at the rear end of the middle of the U-shaped transfer frame 6, a reset hinge 8 is fixedly connected to the upper end of the middle of the U-shaped transfer frame 6, a baffle 9 is hinged in the middle of the reset hinge 8, a limited block 10 is fixedly connected to the middle of the U-shaped transfer frame 6 at the rear side of the baffle 9, a through hole is provided at the lower end of the middle of the U-shaped transfer frame 6 in front of the baffle 9, a U-shaped through hole 11 is provided at the lower end of the through hole at the bottom of the breeding pond 1, and the bottom of the breeding pond 1 is located at the rear side of the second partition wall 3 for disassembly and connection There is a sewage storage tank 12, a rectangular hole is opened at the lower end of the second partition wall 3, a filter screen 13 is fixedly connected to the middle of the rectangular hole, a perforated plate 14 is fixedly connected to the middle of the aquaculture pond 1 in front of the second partition wall 3, a microbial degradation biofilm medium 15 is placed in the middle of the aquaculture pond 1 in front of the perforated plate 14, a placement groove 16 is opened in the middle of the left and right ends of the aquaculture pond 1 between the second partition wall 3 and the perforated plate 14, two pulleys 17 are fixedly connected to the upper end of the second partition wall 3, two pumps 18 are fixedly installed on the upper end of the first partition wall 2, and a U-shaped water pipe 19 is installed on the output end of the pump 18, linear modules 20 are installed on the left and right parts of the upper ends of the aquaculture pond 1 and the first partition wall 2, the linear module 20 is electrically connected to the pumping module 7 and the pump 18, a collection structure is installed between the two linear modules 20, and the upper end of the aquaculture pond 1 is located between the first partition wall 2 and the second partition wall 3 and is fixedly connected to a linkage structure.

[0024] See also Figure 2-6 The collecting structure includes a T-shaped rod 21 and a rubber plate 24. An L-shaped scraper 22 is fixedly connected to the lower end of the T-shaped rod 21. The left and right parts of the upper end of the L-shaped scraper 22 are provided with adaptation holes. A blocking net 23 is fixedly installed in the middle of the adaptation hole. The left and right ends of the rubber plate 24 are fixedly connected with protrusions 25. The protrusion 25 can be inserted into the middle of the placement groove 16. The upper end of the protrusion 25 is fixedly connected with a compression spring 26. The upper end of the compression spring 26 is fixedly connected with a limiting disk 27. Two traction ropes 28 are fixedly connected between the front part of the upper end of the T-shaped rod 21 and the upper end of the rubber plate 24, so that the sludge at the bottom of the breeding pond 1 can be scraped off. The linkage structure includes a U-shaped bracket 29, a spring telescopic rod 30 is fixedly connected to the lower middle end of the U-shaped bracket 29, a rectangular rubber block 31 is fixedly connected to the lower end of the spring telescopic rod 30, a groove is provided at the lower front end of the rectangular rubber block 31, and a brush 32 is fixedly connected to the middle of the groove, so that the sewage between the first partition wall 2 and the second partition wall 3 can be squeezed into the microbial degradation biofilm medium 15.

[0025] See also Figure 3-6The L-shaped guide frame 4 and the L-shaped scraper 22 can form a hollow rectangular frame, and the bottom of the L-shaped scraper 22 is in contact with the inner wall of the aquaculture pond 1, so that the sludge can be concentrated between the L-shaped guide frame 4 and the L-shaped scraper 22, and the L-shaped scraper 22 can scrape the sludge at the bottom of the aquaculture pond 1. The linear module 20 can drive the T-shaped rod 21 to move, and the rubber plate 24 is located between the second partition wall 3 and the perforated plate 14, and the rubber plate 24 can block the filter screen 13, so that the T-shaped rod 21 can reciprocate.

[0026] See also Figure 2-8 The microbial degradation biofilm medium 15 is granular, and the particle diameter is larger than the hole diameter of the perforated plate 14, and the U-shaped water pipe 19 draws away the water on the upper side of the microbial degradation biofilm medium 15, so that the contact area between the sewage and the microbial degradation biofilm medium 15 is increased, and the microbial degradation biofilm medium 15 is not easy to pass through the perforated plate 14, and the treated sewage can be recycled. The middle part of the traction rope 28 is sleeved on the outside of the pulley 17, and the compression spring 26 is located in the placement groove 16, and the limit plate 27 is fixedly connected to the upper end of the middle part of the placement groove 16, so that the traction rope 28 can drive the rubber plate 24 to move, and the compression spring 26 can drive the rubber plate 24 to reset downward. The rectangular rubber block 31 can block the space between the first partition wall 2 and the second partition wall 3 and the aquaculture pond 1, and the brush 32 can contact the back side of the filter screen 13, so that the rectangular rubber block 31 can squeeze the sewage between the first partition wall 2 and the second partition wall 3 through the filter screen 13, and the brush 32 can scrape off the sludge attached to the back side of the filter screen 13.

[0027] When treating aquaculture wastewater, the relevant staff adjusts and sets the linear module 20, the pumping module 7 and the pump 18, pours the microbial degradation biofilm medium 15 into the middle of the aquaculture pond 1 in front of the perforated plate 14, and breeds the fish to be bred in the middle of the aquaculture pond 1 behind the first partition wall 2; After a period of time, sludge such as feces and bait residues of aquatic products are deposited at the bottom of the breeding pond 1 located behind the first partition wall 2. The linear module 20 drives the T-shaped rod 21 to move forward, and the T-shaped rod 21 drives the L-shaped scraper 22 to move forward. During the forward movement, the L-shaped scraper 22 scrapes the sludge deposited at the bottom of the breeding pond 1 into the inside of the L-shaped scraper 22. Then, the L-shaped scraper 22 contacts the L-shaped guide frame 4. At this time, the L-shaped scraper 22 and the L-shaped guide frame 4 form a closed hollow frame. The traction rope 28 no longer limits the rubber plate 24. Under the action of the compression spring 26, the rubber plate 24 descends to block the filter screen 13. The pumping module 7 pumps water through the sewage hole 5, and the water in the aquaculture pond 1 enters between the L-shaped guide frame 4 and the L-shaped scraper 22 through the blocking net 23. The water pushes the sludge between the L-shaped guide frame 4 and the L-shaped scraper 22 to pass through the pumping module 7, and the blocking net 23 blocks the aquaculture products. The sewage mixed with the sludge pushes the baffle 9 to rotate along the reset hinge 8, and the baffle 9 no longer blocks the movement of the sewage. The sewage mixed with the sludge enters between the first partition wall 2 and the second partition wall 3 through the U-shaped through hole 11. The sewage pushes the rectangular rubber block 31 upward. When the rectangular rubber block 31 rises to the same height as the aquaculture pond 1, the pumping module 7 stops pumping water. Under the action of the reset hinge 8, the baffle 9 rotates and resets to block the U-shaped transfer frame 6, and the limit block 10 limits the baffle 9 at the same time. Afterwards, the linear module 20 drives the T-shaped rod 21 to move backward, and the T-shaped rod 21 pulls the traction rope 28. Under the action of the traction rope 28, the rubber plate 24 moves upward, and the rubber plate 24 no longer blocks the filter screen 13. Under the action of the spring telescopic rod 30, the rectangular rubber block 31 moves downward, and the sewage between the first partition wall 2 and the second partition wall 3 is squeezed through the filter screen 13 by the rectangular rubber block 31. Under the action of the filter screen 13, the sludge is blocked and falls into the sewage storage tank 12. During the descent process, the rectangular rubber block 31 uses the brush 32 to brush off the sludge attached to the rear surface of the filter screen 13. When the rectangular rubber block 31 descends to the bottom, the sludge is compressed in the middle of the sewage storage tank 12. After passing through the filter screen 13, the sewage enters the microbial degradation biofilm medium 15 through the perforated plate 14. Under the extrusion of the rectangular rubber block 31, the sewage quickly passes through the gaps between the microbial degradation biofilm medium 15, and the nitrogen, phosphorus, nitrate and other elements in the sewage are degraded by the microorganisms. Then, the pump 18 pumps the treated water in the middle of the aquaculture pond 1 in front of the second partition wall 3 into the middle of the aquaculture pond 1 in the rear of the first partition 2 through the U-shaped water pipe 19, completing the recycling of the aquaculture wastewater; The linear module 20 drives the T-shaped rod 21 to reciprocate, so that the aquaculture wastewater in the aquaculture pond 1 is recycled. The sludge at the bottom of the aquaculture pond 1 can be scraped into the space between the L-shaped scraper 22 and the L-shaped guide frame 4 by the L-shaped scraper 22, and the rectangular rubber block 31 compresses the sludge in the middle of the sewage storage tank 12, and the squeezing effect of the rectangular rubber block 31 allows the sewage to quickly pass through the gaps between the microbial degradation biofilm medium 15, so that there is no need to frequently remove the sludge manually during the circulation of aquaculture wastewater, and the nitrogen, phosphorus, nitrate and other elements in the wastewater can be biodegraded.

[0028] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wastewater recycling system, comprising a breeding pond (1), characterized in that: The aquaculture pond (1) is fixedly connected to a first partition wall (2) in the middle, the aquaculture pond (1) is fixedly connected to a second partition wall (3) in the middle located in front of the first partition wall (2), the bottom of the aquaculture pond (1) is fixedly connected to an L-shaped guide frame (4) located at the rear end of the first partition wall (2), a sewage hole (5) is provided in the middle of the front end of the L-shaped guide frame (4), a U-shaped transfer frame (6) is installed in the middle of the first partition wall (2) at the same height as the sewage hole (5), and a pumping module is fixedly installed in the middle and rear end of the U-shaped transfer frame (6). (7), the upper middle end of the U-shaped transfer frame (6) is fixedly connected to a reset hinge (8), the middle part of the reset hinge (8) is hinged to a baffle (9), the middle part of the U-shaped transfer frame (6) is located behind the baffle (9) and fixedly connected to a limit block (10), the lower middle end of the U-shaped transfer frame (6) is located in front of the baffle (9) and is provided with a through hole, the bottom of the aquaculture pond (1) is located at the lower end of the through hole and is provided with a U-shaped through hole, the bottom of the aquaculture pond (1) is located behind the second partition wall (3) and is detachably connected to a sewage storage tank (12), the A rectangular hole is provided at the lower end of the second partition wall (3), a filter screen (13) is fixedly connected to the middle of the rectangular hole, a perforated plate (14) is fixedly connected to the middle of the aquaculture pond (1) in front of the second partition wall (3), a microbial biodegradable biofilm medium (15) is placed in the middle of the aquaculture pond (1) in front of the perforated plate (14), placement grooves (16) are provided at the middle of the left and right ends of the aquaculture pond (1) between the second partition wall (3) and the perforated plate (14), and two pulleys (17) are fixedly connected to the upper end of the second partition wall (3). Two water pumps (18) are fixedly mounted on the upper end of the first partition wall (2), and a U-shaped water pipe (19) is mounted on the output end of the water pump (18). Linear modules (20) are mounted on both the left and right parts of the upper end of the aquaculture pond (1) and the first partition wall (2). The linear modules (20) are electrically connected to the water pump module (7) and the water pump (18). A collection structure is mounted between the two linear modules (20). The upper end of the aquaculture pond (1) is located between the first partition wall (2) and the second partition wall (3) and is fixedly connected to a linkage structure.

2. A wastewater recycling system according to claim 1, characterized in that: The collecting structure comprises a T-shaped rod (21) and a rubber plate (24); the lower end of the T-shaped rod (21) is fixedly connected to an L-shaped scraper (22); the upper left and right parts of the L-shaped scraper (22) are provided with matching holes; a blocking net (23) is fixedly installed in the middle of the matching hole; the left and right ends of the rubber plate (24) are fixedly connected to protrusions (25); the protrusions (25) can be inserted into the middle of the placement groove (16); the upper end of the protrusion (25) is fixedly connected to a compression spring (26); the upper end of the compression spring (26) is fixedly connected to a limiting disk (27); and two traction ropes (28) are fixedly connected between the front part of the upper end of the T-shaped rod (21) and the upper end of the rubber plate (24).

3. A wastewater recycling system according to claim 1, characterized in that: The linkage structure comprises a U-shaped bracket (29), a spring telescopic rod (30) being fixedly connected to the lower middle end of the U-shaped bracket (29), a rectangular rubber block (31) being fixedly connected to the lower end of the spring telescopic rod (30), a groove being provided at the lower front end of the rectangular rubber block (31), and a brush (32) being fixedly connected to the middle of the groove.

4. A wastewater recycling system according to claim 2, characterized in that: The L-shaped guide frame (4) and the L-shaped scraper (22) can form a hollow rectangular frame, and the bottom of the L-shaped scraper (22) is in contact with the inner wall of the breeding pond (1).

5. A wastewater recycling system according to claim 2, characterized in that: The linear module (20) is capable of driving the T-shaped rod (21) to move, and the rubber plate (24) is located between the second partition wall (3) and the perforated plate (14), and the rubber plate (24) is capable of blocking the filter screen (13).

6. A wastewater recycling system according to claim 2, characterized in that: The microbial biodegradable biofilm medium (15) is in the form of particles, and the diameter of the particles is larger than the diameter of the holes in the perforated plate (14), and the U-shaped water pipe (19) draws away water on the upper side of the microbial biodegradable biofilm medium (15).

7. A wastewater recycling system according to claim 2, characterized in that: The middle portion of the traction rope (28) is sleeved on the outside of the pulley (17), the compression spring (26) is located in the placement groove (16), and the limit plate (27) is fixedly connected to the upper end of the middle portion of the placement groove (16).

8. The wastewater recycling system according to claim 3 is characterized by: The rectangular rubber block (31) can block the space between the first partition wall (2), the second partition wall (3) and the aquaculture pond (1), and the brush (32) can contact the rear side of the filter screen (13).

9. The method for using a wastewater recycling system according to claim 1, characterized in that: The following steps are involved: S1. A staff member adjusts and sets the linear module (20), the pumping module (7) and the pump (18); S2, the staff pours the microbial biodegradable biofilm medium (15) into the middle of the aquaculture pond (1) in front of the perforated plate (14), and culture the fish to be cultured in the middle of the aquaculture pond (1) in the rear of the first partition wall (2); S3. Regularly remove the sludge storage tank (12) to clean the sludge.

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