A / O and MBR wastewater treatment device for pig wastewater treatment

Abstract

The application belongs to the technical field of wastewater treatment, and particularly relates to a wastewater treatment device with A / O and MBR for pig wastewater treatment. The device is used for solving the problems that the growth of aerobic bacteria is promoted and multi-stage filtration is difficult to realize in the prior art. The device comprises a base, two vertical plates are symmetrically and fixedly installed on one side of the top of the base, and the same impurity removal box is fixedly installed on the top of the two vertical plates. An impurity removal plate is arranged in the impurity removal box, a plurality of impurity removal holes are formed in the impurity removal plate at equal intervals, and a hanging plate is fixedly installed on the top of the impurity removal plate and extends to the top of the impurity removal box. The device can perform anaerobic reaction and aerobic reaction on the wastewater before membrane filtration of the pig wastewater, so as to remove aerobic bacteria and anaerobic bacteria in the wastewater in advance. When the wastewater is filtered, a plurality of membrane filter plates are arranged, so that the wastewater can be filtered in multiple stages, and the cleanliness of the treated wastewater is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to an A / O and MBR wastewater treatment device for pig wastewater treatment. BACKGROUND

[0002] In recent years, with the development of large-scale and intensive pig breeding, the wastewater generated in the breeding process has increasingly serious problems of water pollution. Pig wastewater mainly comes from pig manure, pig urine and pigsty flushing water, and contains a large amount of organic pollutants, ammonia nitrogen, total phosphorus, insect eggs and the like. If the wastewater is directly discharged into rivers and lakes without treatment, a large amount of oxygen in the water will be consumed by the decomposition of high-concentration organic matter, resulting in the death of a large number of aquatic animals such as fish. At the same time, the random discharge of pig wastewater can easily pollute the shallow groundwater, seriously affect the health of people in the area where the groundwater is used as domestic water, and cause serious environmental pollution.

[0003] At present, before the pig wastewater is discharged, the wastewater needs to be treated. However, the existing treatment device, such as the pig wastewater treatment device with the announcement number CN208649058U, still has the following deficiencies in the actual use process.

[0004] 1. In the above technical solution, oxygen is supplemented to promote the growth of microorganisms to eliminate sludge in the wastewater. However, in the environment with sufficient oxygen, aerobic bacteria are easy to breed, so it is difficult to completely remove the bacteria in the wastewater.

[0005] 2. Furthermore, the technical solution cannot realize multi-stage filtration of the wastewater, so the cleanliness of the treated wastewater cannot be guaranteed in the process of wastewater treatment.

[0006] In view of the above problems, the present application provides an A / O and MBR wastewater treatment device for pig wastewater treatment. SUMMARY

[0007] The present application provides an A / O and MBR wastewater treatment device for pig wastewater treatment, which solves the problems in the prior art that aerobic bacteria are easy to grow and multi-stage filtration of the wastewater is difficult to realize when the wastewater is treated.

[0008] The present application provides the following technical solutions:

[0009] The utility model provides an A / O and MBR wastewater treatment device for pig raising wastewater treatment, which comprises a base, two vertical plates are symmetrically and fixedly installed on one side of the top of the base, and the same impurity removal box is fixedly installed on the top of the two vertical plates, an impurity removal plate is arranged in the impurity removal box, a plurality of impurity removal holes are equidistantly formed in the impurity removal plate, a hanging plate is fixedly installed on the top of the impurity removal plate and extends to the upper side of the impurity removal box, the hanging plate is clamped on the top of the impurity removal box, a positioning strip is fixedly installed on one side of the bottom of the impurity removal plate, a limiting strip is fixedly installed on the inner wall of one side of the impurity removal box, the positioning strip is clamped with the limiting strip, and the wastewater treatment device further comprises:

[0010] A reaction mechanism is installed on the top of the base, one side of the reaction mechanism extends into the impurity removal box and is connected with the inner wall of the bottom of the impurity removal box, and the reaction mechanism is used for anaerobic reaction and aerobic reaction of wastewater;

[0011] An oxygen removal mechanism is installed on the reaction mechanism, and the oxygen removal mechanism is used for discharging oxygen when the wastewater is subjected to anaerobic reaction;

[0012] A filtering mechanism is installed on the top of the base, the filtering mechanism is connected with the oxygen removal mechanism, and the filtering mechanism is used for MBR membrane filtration of the wastewater after anaerobic reaction and aerobic reaction.

[0013] In a possible design, the reaction mechanism comprises a delivery pump and a reaction box which are fixedly installed on the top of the base respectively, the delivery pump is located between the impurity removal box and the reaction box, a sewage pipe is fixedly installed on the suction end of the delivery pump, the top end of the sewage pipe extends into the impurity removal box and is fixedly connected with the inner wall of the bottom of the impurity removal box, a delivery pipe is fixedly installed on the output end of the delivery pump, the top end of the delivery pipe extends into the reaction box and is fixedly connected with the inner wall of one side of the top of the reaction box, a one-way valve is fixedly installed in the delivery pipe, a partition plate is fixedly installed in the reaction box, a plurality of air holes are equidistantly formed in the inner wall of the reaction box and are located below the partition plate, a flow hole is formed in the partition plate, a sealing ring is fixedly installed on the bottom of the partition plate and communicates with the flow hole, a dispersion assembly is installed on the top of the reaction box, the bottom of the dispersion assembly extends into the reaction box, the dispersion assembly penetrates through the flow hole and the sealing ring and is in close contact with the inner wall of the sealing ring, the dispersion assembly is used for centrifugal dispersion of wastewater, the oxygen removal mechanism is installed on the reaction box, and one side of the filtering mechanism extends into the reaction box and is connected with the inner wall of the other side of the bottom of the reaction box.

[0014] In a possible design, the dispersing assembly comprises a transmission ring rotatably connected to the top of the reaction box, two clamping grooves are symmetrically formed in the top of the transmission ring, a rotating shaft is penetratingly arranged in the transmission ring, the bottom end of the rotating shaft extends to below the sealing ring through the flow hole and the sealing ring, clamping plates are fixedly installed on the two sides of the top of the rotating shaft, the clamping plates are movably clamped with the corresponding clamping grooves, a driven bevel gear is fixedly sleeved on the transmission ring, a driving motor is fixedly installed on one side of the top of the reaction box, a driving bevel gear is fixedly installed on the output shaft of the driving motor, the driving bevel gear is engaged with the driven bevel gear, a sealing disc is fixedly sleeved on the rotating shaft, the sealing disc extends through the flow hole and the sealing ring and is tightly attached to the flow hole and the sealing ring respectively, two dispersing discs are fixedly sleeved on the rotating shaft and are located above and below the partition plate respectively.

[0015] In a possible design, the other side of the top of the reaction box is fixedly installed with a mounting bracket, a moving plate is slidingly connected in the mounting bracket, one side of the moving plate extends to the outside of the mounting bracket, the top end of the rotating shaft is rotatably connected to the bottom of the moving plate, a first electric push rod is fixedly installed on the top of the mounting bracket, the output shaft of the first electric push rod extends to the inside of the mounting bracket and is fixedly connected to the top of the moving plate.

[0016] In a possible design, the oxygen removal mechanism comprises a first support pipe and a second support pipe which are fixedly installed on the inner walls of the two sides of the top of the reaction box respectively, the ends of the first support pipe and the second support pipe away from each other extend to the outside of the two sides of the reaction box respectively, an exhaust cover is fixedly installed on one end of the second support pipe, a first gas conveying cover is slidingly connected in the first support pipe, first gas conveying holes are formed in the top inner wall and the bottom inner wall of the first gas conveying cover, a second gas conveying cover is slidingly connected in the second support pipe, second gas conveying holes are formed in the top inner wall and the bottom inner wall of the second gas conveying cover, the same mounting ring located in the reaction box is fixedly installed on the side of the first gas conveying cover and the second gas conveying cover close to each other, a position adjusting assembly is installed on the top of the reaction box, the position adjusting assembly is connected with the first gas conveying cover, a gas conveying assembly is connected on the position adjusting assembly, and the gas conveying assembly is connected with the first gas conveying cover and the transmission ring respectively.

[0017] In a possible design, the position adjusting assembly comprises a support frame fixedly installed on the top of the reaction box, a moving frame is slidingly connected on the support frame, a moving hole is formed in the support frame, an installation plate is fixedly installed on the bottom of the moving frame, the bottom of the installation plate extends to below the support frame through the moving hole, the installation plate is fixedly sleeved on the first gas conveying cover, a second electric push rod is fixedly installed on one side of the support frame, the output shaft of the second electric push rod extends to one side of the moving frame through the support frame and is fixedly connected with the moving frame, and the gas conveying assembly extends through the moving frame and is connected with the moving frame.

[0018] In a possible design, the gas feeding assembly comprises a power box fixedly installed on one side of the first gas feeding cover opening, the power box is in communication with the first gas feeding cover, an air receiving pipe is fixedly installed on the inner wall of one side of the power box, one end of the air receiving pipe extends to the outside of the power box and is used for connecting an externally connected nitrogen gas feeding pipeline, a blade shaft is rotationally connected in the power box, an air suction blade is fixedly installed on one end of the blade shaft, a driving bevel gear is fixedly installed on the other end of the blade shaft, a transmission shaft is rotationally connected through the moving frame, the bottom end of the transmission shaft extends into the power box and is fixedly installed with a connecting bevel gear, the connecting bevel gear is in mesh with the driving bevel gear, a driving shaft is rotationally connected on the moving frame, a driven gear is fixedly installed on the top end of the driving shaft, a driving gear is fixedly sleeved on the transmission ring, the driving gear is in mesh with the driven gear, a synchronous wheel is fixedly sleeved on the driving shaft and the transmission shaft, and the same synchronous belt is drivingly sleeved on the two synchronous wheels.

[0019] In a possible design, the filter mechanism comprises a blowdown pipe fixedly installed on the inner wall of the bottom of one side of the reaction box, one end of the blowdown pipe extends to the outside of the reaction box, a booster pump is fixedly installed on the top of the base, one end of the blowdown pipe is connected with the suction end of the booster pump, a flow pipe is fixedly installed on the output end of the booster pump, a filter box is fixedly installed on the top of the base, a cover plate is clamped on the top of the filter box, the top end of the flow pipe extends into the filter box and is fixedly connected with the inner wall of one side of the top of the filter box, a grid plate is fixedly installed in the filter box, two installation rods are fixedly installed on the bottom of one side of the cover plate in a symmetrical manner, the bottom ends of the two installation rods extend into the filter box and are fixedly installed with the same supporting plate, the supporting plate is in contact with the corresponding inner wall of the filter box and one side of the grid plate, an external connection pipe is fixedly installed on the other side of the bottom of the filter box, a plurality of membrane filter plates are fixedly installed on the bottom of the cover plate at equal intervals, a plurality of limiting frames are fixedly installed in the filter box at equal intervals, and the membrane filter plates are clamped with the corresponding limiting frames.

[0020] In a possible design, a fixed shaft is rotationally connected to the top of the cover plate, two hooks are fixedly sleeved on the fixed shaft, clamping rods are fixedly installed on the top of the two sides of the filter box, and the hooks are clamped with the corresponding clamping rods.

[0021] In a possible design, a limiting cover is fixedly installed on the fixed shaft, a plug plate is slidingly connected in the limiting cover, a locking plate is fixedly installed on the top of the cover plate, a plug hole is formed in the locking plate, one side of the plug plate penetrates through the plug hole and is clamped with the plug hole, an adjusting hole is formed in the top inner wall of the limiting cover, a handle is fixedly installed on the top of the plug plate, the top of the handle penetrates through the adjusting hole and extends above the limiting cover, a compression spring is fixedly installed on the other side of the plug plate, and one end of the compression spring is fixedly connected with the inner wall of one side of the limiting cover.

[0022] It should be understood that the foregoing general description and the following detailed description are only exemplary, but cannot limit the present application.

[0023] Compared with the prior art, the present application has the beneficial effects that:

[0024] In the present application, by setting the reaction mechanism, the wastewater used for raising pigs can be put into the impurity removal box, the large particle-shaped solid particles contained in the wastewater are filtered by the impurity removal plate, then the delivery pump is started to pump out the wastewater in the impurity removal box, the wastewater is delivered to the reaction box through the delivery pipe, at this time the flow hole is blocked, then the oxygen removal mechanism is started to remove the oxygen above the partition plate, so that the wastewater can be reacted and purified in an anaerobic environment, and the aerobic bacteria in the wastewater can be killed;

[0025] And after the flow hole and the sealing ring are blocked by the sealing disc, the wastewater can fall on the upper side of the partition plate after being delivered to the reaction box, at this time the oxygen removal mechanism is used to remove the oxygen in the area above the partition plate, so that the wastewater can be reacted in an anaerobic environment, and the driving motor is started to drive the driving bevel gear to rotate, at this time the transmission ring can be driven to rotate under the meshing transmission action of the driven bevel gear, so that the rotating shaft can be driven to rotate through the clamping of the two clamping plates, the dispersion disc can be driven to rotate, the wastewater can be centrifugally dispersed when the dispersion disc rotates, at this time the oxygen in the wastewater can be quickly released and discharged by dispersing the wastewater when the oxygen is discharged, so that the wastewater can be reacted anaerobically;

[0026] At the same time, the first electric push rod is started to drive the moving plate to move longitudinally, at this time the rotating shaft can be driven to move longitudinally, when the anaerobic reaction of the wastewater is completed, the rotating shaft can be driven to move upward, at this time the sealing disc can be driven to move upward, the flow hole and the sealing ring are opened, the wastewater can flow to the lower side of the partition plate through the flow hole and the sealing ring, so that the wastewater can be reacted aerobically;

[0027] In the present application, by setting the oxygen removal mechanism, the gas delivery assembly can be connected with the external nitrogen gas delivery pipeline, then the positioning assembly can be started to drive the first gas cover to move, at this time the second gas cover can be driven to move under the driving of the mounting ring, so that the two first gas holes are communicated with the reaction box, and the two second gas holes are communicated with the exhaust cover, then the nitrogen gas can be delivered into the reaction box under the transmission action of the gas delivery assembly, as the volume of the nitrogen gas increases, and the molecular mass of the nitrogen gas is larger than that of the oxygen gas, so that the oxygen gas in the reaction box can be squeezed out, the oxygen gas is discharged through the second gas cover and the two second gas holes, so that the wastewater can be reacted in an anaerobic environment;

[0028] In the application, through the filter mechanism, the wastewater after aerobic reaction can be pumped out of the reaction box by starting the booster pump, and then can be transported into the filter box. At this time, the wastewater is pre-filtered by the grid plate, and then the wastewater keeps flowing, and can be filtered by multiple membrane filter plates, so as to purify and filter the pig wastewater.

[0029] The application can carry out anaerobic reaction and aerobic reaction on the wastewater before membrane filtration of the pig wastewater, so as to pre-removes the aerobic bacteria and anaerobic bacteria in the wastewater, and when filtering the wastewater, multiple membrane filter plates are arranged, so as to carry out multi-stage filtration on the wastewater, so that the cleanliness of the treated wastewater is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A first perspective structure three-dimensional schematic view of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0031] Figure 2 A second perspective structure three-dimensional schematic view of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0032] Figure 3 A three-dimensional schematic view of the impurity removal box and impurity removal plate separation structure of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0033] Figure 4 A three-dimensional schematic view of the reaction box cross-sectional structure of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0034] Figure 5 A three-dimensional schematic view of the driving motor, driving bevel gear, driven bevel gear, transmission ring and rotating shaft connection structure of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0035] Figure 6 A three-dimensional schematic view of the first electric push rod, moving plate and rotating shaft connection structure of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0036] Figure 7 A three-dimensional schematic view of the second electric push rod, moving frame, first exhaust cover, transmission ring and second exhaust cover connection structure of the wastewater treatment device for treating pig wastewater by A / O and MBR provided by the embodiment of the application;

[0037] Figure 8A / O and MBR wastewater treatment device for pig wastewater treatment provided by the embodiment of the present application is provided with a power box, a filter box, a booster pump, a flow pipe, a plurality of membrane filter plates, a plurality of limiting racks and a cover plate.

[0038] Figure 9 A / O and MBR wastewater treatment device for pig wastewater treatment provided by the embodiment of the present application is provided with a power box, a filter box, a booster pump, a flow pipe, a plurality of membrane filter plates, a plurality of limiting racks and a cover plate.

[0039] Figure 10 A / O and MBR wastewater treatment device for pig wastewater treatment provided by the embodiment of the present application is provided with a power box, a filter box, a booster pump, a flow pipe, a plurality of membrane filter plates, a plurality of limiting racks and a cover plate.

[0040] Figure 11 A / O and MBR wastewater treatment device for pig wastewater treatment provided by the embodiment of the present application is provided with a power box, a filter box, a booster pump, a flow pipe, a plurality of membrane filter plates, a plurality of limiting racks and a cover plate.

[0041] Figure 12 A / O and MBR wastewater treatment device for pig wastewater treatment provided by the embodiment of the present application is provided with a power box, a filter box, a booster pump, a flow pipe, a plurality of membrane filter plates, a plurality of limiting racks and a cover plate.

[0042] Reference signs:

[0043] 1, base; 2, vertical plate; 3, impurity removal box; 4, impurity removal plate; 401, impurity removal hole; 5, hanging plate; 6, limiting strip; 7, positioning strip; 8, conveying pump; 9, sewer pipe; 10, conveying pipe; 1001, one-way valve; 11, reaction box; 12, partition plate; 13, mounting frame; 14, moving plate; 15, first electric push rod; 16, rotating shaft; 17, dispersion disc; 18, sealing ring; 19, sealing disc; 20, transmission ring; 21, clamping plate; 22, driving motor; 23, driving bevel gear; 24, driven bevel gear; 25, air hole; 26, first support pipe; 27, exhaust cover; 28, second support pipe; 29, first air conveying cover; 30, first air conveying hole; 31, mounting ring; 32, second air conveying cover; 33, second air conveying hole; 34, power box; 35, air connecting pipe; 36, support frame; 37, moving frame; 38, second electric push rod; 39, mounting plate; 40, transmission shaft; 41, connecting bevel gear; 42, blade shaft; 43, air suction blade; 44, driving bevel gear; 45, flow pipe; 46, driving shaft; 47, driving gear; 48, driven gear; 49, synchronous wheel; 50, synchronous belt; 51, blowdown pipe; 52, booster pump; 53, filter box; 54, external connecting pipe; 55, cover plate; 56, grid plate; 57, mounting rod; 58, supporting plate; 59, limiting rack; 60, membrane filter plate; 61, fixed shaft; 62, hook; 63, clamping rod; 64, limiting cover; 65, insertion plate; 66, locking plate; 67, handle; 68, compression spring. DETAILED DESCRIPTION

[0044] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0045] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative positional relationship after connection does not change. The orientation language mentioned in the embodiments of the present application, such as "inner", "outer", "top", "bottom", etc., is only the direction of the drawing, therefore, the orientation language used is to better, more clearly illustrate and understand the embodiments of the present application, and is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the present application.

[0046] Embodiment 1: Reference Figures 1-12 The A / O and MBR wastewater treatment device for pig wastewater treatment of the embodiment comprises a base 1, two vertical plates 2 are symmetrically and fixedly installed on one side of the top of the base 1, and one impurity removal box 3 is commonly and fixedly installed on the top of the two vertical plates 2. An impurity removal plate 4 is arranged in the impurity removal box 3, a plurality of impurity removal holes 401 are equidistantly formed on the impurity removal plate 4, and are used for filtering out large-particle impurities in wastewater. The top of the impurity removal plate 4 extends to the upper side of the impurity removal box 3, and a hanging plate 5 is fixedly installed on the top of the impurity removal plate 4, the hanging plate 5 is clamped on the top of the impurity removal box 3, and the impurity removal plate 4 is convenient to install and dismount. In addition, a positioning strip 7 is fixedly installed on one side of the bottom of the impurity removal plate 4, a limiting strip 6 is fixedly installed on the inner wall of one side of the impurity removal box 3, and the positioning strip 7 is clamped with the limiting strip 6, so as to ensure the stable position of the impurity removal plate 4 in the impurity removal box 3.

[0047] Next, a reaction mechanism is installed on the top of the base 1. The reaction mechanism comprises a conveying pump 8 and a reaction box 11 which are fixedly installed on the top of the base 1, and the conveying pump 8 is located between the impurity removal box 3 and the reaction box 11. A sewage pipe 9 is fixedly installed on the suction end of the conveying pump 8, the top end of the sewage pipe 9 extends to the inside of the impurity removal box 3 and is fixedly connected with the bottom inner wall of the impurity removal box 3. A conveying pipe 10 is fixedly installed on the output end of the conveying pump 8, the top end of the conveying pipe 10 extends to the inside of the reaction box 11 and is fixedly connected with the top inner wall of one side of the reaction box 11, and a one-way valve 1001 is fixedly installed in the conveying pipe 10, so as to prevent the backflow of wastewater.

[0048] A partition 12 is fixedly installed in the reaction box 11, dividing the reaction box 11 into two areas. A plurality of air holes 25 are evenly arranged on the inner wall of the reaction box 11, and are located below the partition 12, for ventilating the area below the partition 12 when needed. The partition 12 is provided with a flow hole, and a sealing ring 18 is fixedly installed at the bottom of the flow hole. A dispersion assembly is installed on the top of the reaction box 11, and the bottom of the dispersion assembly extends into the reaction box 11 and respectively penetrates the flow hole and the sealing ring 18 and is in close contact with the inner wall of the sealing ring 18. The dispersion assembly comprises a transmission ring 20 rotatably connected to the top of the reaction box 11, a rotating shaft 16 penetrating the transmission ring 20, and the bottom end of the rotating shaft 16 penetrating the flow hole and the sealing ring 18. The two sides of the top of the rotating shaft 16 are fixedly installed with clamping plates 21, and two clamping grooves symmetrically arranged on the top of the transmission ring 20 are movably clamped. A driven bevel gear 24 is fixedly sleeved on the transmission ring 20, a driving motor 22 is fixedly installed on one side of the top of the reaction box 11, a driving bevel gear 23 is fixedly installed on the output shaft of the driving motor 22, and the driving bevel gear 23 is engaged with the driven bevel gear 24. A sealing disc 19 and two dispersion discs 17 are fixedly sleeved on the rotating shaft 16, the sealing disc 19 penetrates the flow hole and the sealing ring 18 respectively and is in close contact with them, and the two dispersion discs 17 are located above and below the partition 12 respectively.

[0049] An oxygen removal mechanism is installed in the reaction box 11, for removing oxygen when the wastewater is subjected to anaerobic reaction. A filtration mechanism is installed on the top of the base 1 and connected with the oxygen removal mechanism, for performing MBR membrane filtration on the wastewater after anaerobic reaction and aerobic reaction. One side of the filtration mechanism extends into the reaction box 11 and is connected with the inner wall of the other side of the bottom of the reaction box 11.

[0050] In use, the wastewater used for raising pigs is put into the impurity removal box 3, and the large granular solid particles contained in the wastewater are filtered by the impurity removal plate 4. Then the delivery pump 8 is started to pump the wastewater in the impurity removal box 3 to the reaction box 11 through the delivery pipe 10. At this time, the flow hole is blocked by the sealing disc 19, and the wastewater falls above the partition plate 12. Then the oxygen removal mechanism is started to remove the oxygen above the partition plate 12, so that the wastewater is reacted and purified in an oxygen-free environment to kill aerobic bacteria in the wastewater. At the same time, the driving motor 22 is started to drive the driving bevel gear 23 to rotate, which drives the transmission ring 20 to rotate through the meshing transmission action of the driven bevel gear 24. The transmission ring 20 drives the rotating shaft 16 to rotate through the two clamping plates 21, and then drives the dispersion disc 17 to rotate. The dispersion disc 17 disperses the wastewater by centrifugal force when rotating, which helps to quickly release and discharge the oxygen in the wastewater, so that the wastewater falls on the other side of the top of the reaction box 11. A mounting bracket 13 is fixedly installed on the other side of the top of the reaction box 11. A movable plate 14 that can slide is designed in the mounting bracket 13, and one side of the movable plate 14 extends to the outside of the mounting bracket 13. The top end of the rotating shaft 16 is rotatably connected to the bottom of the movable plate 14. In order to ensure that the movable plate 14 can stably and accurately move longitudinally, the first electric push rod 15 is installed on the top of the mounting bracket 13, and the output shaft of the first electric push rod 15 extends into the mounting bracket 13 and is fixedly connected to the top of the movable plate 14.

[0051] When the wastewater is reacted in the reaction box 11, the first electric push rod 15 keeps the movable plate 14 and the connected rotating shaft 16, sealing disc 19 and other components in the initial position. At this time, the flow hole and the sealing ring 18 are tightly blocked by the sealing disc 19, and the wastewater is limited to react in the oxygen-free environment above the partition plate 12. Once the oxygen-free reaction is completed, the first electric push rod 15 can be started to move the movable plate 14 and the connected components upward. In this process, the sealing disc 19 also moves upward to open the flow hole and the sealing ring 18, so that the wastewater can flow smoothly through these openings to the lower side of the partition plate 12.

[0052] Subsequently, the first electric push rod 15 can be started again to move the movable plate 14 and the connected components downward until the two clamping plates 21 are tightly clamped with the corresponding clamping grooves. At this time, if the driving motor 22 is started, it will drive the dispersion disc 17 to rotate through the transmission assembly, so as to effectively disperse the wastewater falling below the partition plate 12. The dispersion action can make the wastewater fully contact with the oxygen, so as to further biologically react in the aerobic environment to kill anaerobic microorganisms.

[0053] In addition to the above reaction mechanism, an oxygen removal mechanism is designed to ensure that the wastewater is reacted in an oxygen-free environment. The oxygen removal mechanism mainly consists of a first support pipe 26, a second support pipe 28, an exhaust hood 27, a first gas inlet hood 29, a second gas inlet hood 32, and a mounting ring 31. Among them, the first support pipe 26 and the second support pipe 28 are respectively fixedly installed on the inner walls of the top of the reaction box 11 on both sides, and extend to the outside of the reaction box 11 on both sides. One end of the second support pipe 28 is also fixedly installed with an exhaust hood 27 for discharging the oxygen squeezed out of the reaction box 11.

[0054] The first gas inlet hood 29 and the second gas inlet hood 32 are respectively slidably connected in the first support pipe 26 and the second support pipe 28, and gas inlet holes are opened on the top inner wall and the bottom inner wall of the first gas inlet hood 29 and the second gas inlet hood 32 for the input of nitrogen and the output of oxygen. The two gas inlet hoods are connected together through the mounting ring 31 to form an integral structure.

[0055] In order to ensure that the oxygen removal mechanism can work normally, a positioning assembly and a gas inlet assembly are also designed. The positioning assembly mainly consists of a support frame 36, a moving frame 37, a second electric push rod 38, and a mounting plate 39. Among them, the support frame 36 is fixedly installed on the top of the reaction box 11, and the moving frame 37 is slidably connected on it. The mounting plate 39 is fixedly sleeved on the first gas inlet hood 29 and connected with the support frame 36 through the moving frame 37. The output shaft of the second electric push rod 38 penetrates the support frame 36 and is fixedly connected with one side of the moving frame 37, for driving the moving frame 37 and the connected components to move horizontally.

[0056] The gas inlet assembly penetrates the moving frame 37 and is connected with the moving frame 37, which can be connected with the external nitrogen gas inlet pipeline. When it is needed to inject nitrogen into the reaction box 11, the second electric push rod 38 in the positioning assembly can be started to drive the moving frame 37 and the connected components to move horizontally, so that the first gas inlet hood 29 and the second gas inlet hood 32 are moved to the appropriate position. At this time, the two first gas inlet holes 30 will be connected with the reaction box 11, and the two second gas inlet holes 33 will be connected with the exhaust hood 27. Then nitrogen can be delivered into the reaction box 11 through the gas inlet assembly.

[0057] With the gradual increase of nitrogen, and because the molecular weight of nitrogen is greater than that of oxygen, oxygen in the reaction box 11 will be gradually squeezed out, and discharged into the exhaust cover 27 through the second gas cover 32 and two second gas holes 33. In this way, it can ensure that the wastewater is reacted in an oxygen-free environment. After the nitrogen injection is completed, only the second electric push rod 38 is started again to drive the moving frame 37 to move in the opposite direction, so that the first gas cover 29 and the second gas cover 32 move in the opposite direction to the initial position and are blocked by the first support pipe 26 and the second support pipe 28 to ensure the closed reaction of the reaction box 11 without oxygen.

[0058] Example 2: Reference Figure 1 、 Figures 9-12 , the present embodiment is based on example one, for the A / O and MBR wastewater treatment device for pig wastewater treatment proposed in example one, when constructing the A / O and MBR wastewater treatment device for pig wastewater treatment, a gas delivery assembly is specially designed to ensure that nitrogen can be smoothly delivered to the reaction box. Specifically, a power box 34 is fixedly installed on the opening side of the first gas cover 29, which is connected with the first gas cover 29 and used to provide power for nitrogen delivery. On the inner wall of one side of the power box 34, a gas connection pipe 35 is fixedly installed, one end of which extends to the outside of the power box 34, which is used to connect the external nitrogen gas pipeline.

[0059] In the power box 34, a blade shaft 42 is rotatably connected, one end of which is fixedly installed with a suction blade 43, which is used to form suction when rotating to suck nitrogen into the power box 34. The other end of the blade shaft 42 is fixedly installed with a driving bevel gear 44, which is used to mesh with the transmission assembly for transmission.

[0060] In order to realize transmission, a transmission shaft 40 is rotatably connected through the moving frame 37, the bottom end of which extends into the power box 34 and is fixedly installed with a connecting bevel gear 41, which meshes with the driving bevel gear 44. In this way, when the transmission shaft 40 rotates, it can drive the blade shaft 42 to rotate through the meshing transmission of the connecting bevel gear 41 and the driving bevel gear 44.

[0061] At the same time, a driving shaft 46 is also rotatably connected on the moving frame 37, the top end of which is fixedly installed with a driven gear 48. A driving gear 47 is fixedly sleeved on the transmission ring 20, which meshes with the driven gear 48. In this way, when the transmission ring 20 rotates, it can drive the driving shaft 46 to rotate.

[0062] In order to synchronize transmission, a synchronous wheel 49 is fixedly sleeved on the driving shaft 46 and the transmission shaft 40, and a synchronous belt 50 is sleeved on the two synchronous wheels 49. In this way, when the driving shaft 46 rotates, the transmission shaft 40 can be driven to rotate through the transmission effect of the two synchronous wheels 49 and the synchronous belt 50.

[0063] After the gas inlet pipe 35 is connected with the external nitrogen gas supply pipeline, the nitrogen gas supply pipeline can be started to deliver nitrogen gas into the power box 34. At this time, the suction force formed by the suction vane 43 during rotation can suck the nitrogen gas into the first gas delivery cover 29, and the nitrogen gas is delivered into the reaction box 11 through the two first gas delivery holes 30, so as to ensure that the wastewater is reacted in an oxygen-free environment.

[0064] After the wastewater is treated, the wastewater needs to be filtered and purified. Therefore, a sewage pipe 51 is fixedly installed on the bottom inner wall of one side of the reaction box 11, one end of the sewage pipe 51 extends to the outside of the reaction box 11 and is connected with the suction end of a booster pump 52. A flow pipe 45 is fixedly installed on the output end of the booster pump 52, which is used to deliver the wastewater into a filter box 53.

[0065] A cover plate 55 is clamped on the top of the filter box 53, which is used to close the filter box 53. The top end of the flow pipe 45 extends into the filter box 53 and is fixedly connected with the top inner wall of one side of the filter box 53. A grid plate 56 is fixedly installed in the filter box 53, which is used to preliminarily filter the wastewater.

[0066] Meanwhile, two mounting rods 57 are fixedly installed on the bottom side of the cover plate 55 in a symmetrical manner, the bottom ends of the two mounting rods 57 extend into the filter box 53 and a supporting plate 58 is fixedly installed. The supporting plate 58 is in contact with the corresponding inner wall of the filter box 53 and one side of the grid plate 56, which is used to support the grid plate 56.

[0067] An external pipe 54 is fixedly installed on the bottom inner wall of the other side of the filter box 53, which is used to discharge the filtered wastewater. A plurality of membrane filter plates 60 are fixedly installed on the bottom of the cover plate 55 at equal intervals, which can further filter and purify the wastewater. Meanwhile, a plurality of limiting frames 59 are fixedly installed in the filter box 53 at equal intervals, and the membrane filter plates 60 are clamped with the corresponding limiting frames 59, so as to ensure the stable installation of the membrane filter plates 60.

[0068] When the cover plate 55 is clamped on the filter box 53, the two hooks 62 can be rotated by rotating the fixing shaft 61, so that the hooks 62 are clamped with the corresponding clamping rods 63, thereby clamping and limiting the cover plate 55. In order to ensure the stable clamping of the hooks 62 and the clamping rods 63, a limiting cover 64 is fixedly installed on the fixing shaft 61, and a plug plate 65 is slidably connected in the limiting cover 64. On the top of the cover plate 55, a locking plate 66 is fixedly installed, and the locking plate is provided with a plug hole, and one side of the plug plate 65 can penetrate through the plug hole and be clamped with the plug hole.

[0069] Meanwhile, an adjusting hole is formed in the top inner wall of the limiting cover 64, and a handle 67 is fixedly installed on the top of the plug plate 65, and the top of the handle 67 can penetrate through the adjusting hole and extend above the limiting cover 64. The other side of the plug plate 65 is fixedly installed with a compression spring 68, and one end of the compression spring 68 is fixedly connected with the inner wall of one side of the limiting cover 64. After the two hooks 62 are clamped with the corresponding clamping rods 63, the handle 67 can be released, and at this time the compression spring 68 in the stressed state will push the plug plate 65 to move, so that the plug plate 65 penetrates through the plug hole and is clamped with the locking plate 66, thereby limiting the two hooks 62, and ensuring that the two hooks 62 and the corresponding clamping rods 63 can be stably clamped together.

[0070] Working principle: the wastewater to be treated is put into the impurity removal box 3, at this time the large particle solid particles contained in the wastewater are filtered by the impurity removal plate 4, then the wastewater in the impurity removal box 3 is pumped out by starting the conveying pump 8, the wastewater is conveyed into the reaction box 11 through the conveying pipe 10, then the gas connection pipe 35 can be connected with the external nitrogen gas conveying pipeline, then the second electric push rod 38 is started to drive the moving frame 37 to move horizontally, at this time the mounting plate 39 can be driven to move, so that the first gas cover 29 can be driven to move, at this time the second gas cover 32 can be driven to move under the drive of the mounting ring 31, so that the two first gas holes 30 are communicated with the reaction box 11, and the two second gas holes 33 are communicated with the exhaust cover 27, and when the moving frame 37 moves, the driven gear 48 can be driven to move, so that the driven gear 48 is engaged with the driving gear 47, then the driving motor 22 can be started to drive the driving bevel gear 23 to rotate, at this time the transmission ring 20 can be driven to rotate under the engagement transmission of the driven bevel gear 24, so that the rotating shaft 16 can be driven to rotate through the clamping of the two clamping plates 21, that is, the dispersion disc 17 can be driven to rotate, when the dispersion disc 17 rotates, the wastewater can be centrifugally dispersed, at this time the oxygen in the wastewater can be quickly released and discharged by dispersing the wastewater when the oxygen is discharged, and when the transmission ring 20 rotates, the driving gear 47 can be driven to rotate, at this time the driving shaft 46 can be driven to rotate under the engagement transmission of the driven gear 48, at this time the transmission shaft 40 can be driven to rotate under the cooperation transmission of the two synchronous wheels 49 and the synchronous belt 50, at this time the blade shaft 42 can be driven to rotate under the engagement transmission of the connecting bevel gear 41 and the driving bevel gear 44, at this time the suction blade 43 can be driven to rotate, when the suction blade 43 rotates, suction can be formed, so that after the gas connection pipe 35 is connected with the external nitrogen gas conveying pipeline, nitrogen gas can be conveyed into the first gas cover 29, then the nitrogen gas can be conveyed into the reaction box 11 through the two first gas holes 30, as the nitrogen gas gradually increases, and the molecular mass of nitrogen gas is larger than that of oxygen, the oxygen in the reaction box 11 can be squeezed out, so that the oxygen is discharged through the second gas cover 32 and the two second gas holes 33, so that the wastewater can be reacted in an oxygen-free environment, after the oxygen above the partition plate 12 is discharged, at this time the second electric push rod 38 can be started in reverse to drive the first gas cover 29 and the second gas cover 32 to move reversely, the two first gas holes 30 are plugged by the first support pipe 26, and the two second gas holes 33 are plugged by the second support pipe 28, so that the reaction box 11 is closed, so that the wastewater is reacted in an oxygen-free environment, after the oxygen-free reaction is completed, at this time the first electric push rod 15 can be started to drive the moving plate 14 to move longitudinally, at this time the rotating shaft 16 can be driven to move longitudinally, when the rotating shaft 16 moves upward after the oxygen-free reaction of the wastewater is completed,When the sealing disc 19 is driven to move upward, the flow hole and the sealing ring 18 are opened, and the wastewater can flow to the lower part of the partition plate 12 through the flow hole and the sealing ring 18. Since the lower part of the partition plate 12 is sufficient in oxygen, the anaerobic bacteria in the wastewater can be killed after the wastewater flows to the lower part of the partition plate 12. After the aerobic reaction is completed, the booster pump 52 is started to pump the wastewater out of the reaction box 11, and then the wastewater can be conveyed into the filter box 53. The grid plate 56 is used to pre-filter the wastewater, and then the wastewater keeps flowing, and the membrane filter plates 60 are used to filter the wastewater, so that the pig wastewater can be purified and filtered. After the wastewater is filtered, the handle 67 is pulled to pull the plug plate 65 out of the plug hole, and then the limiting cover 64 is reversely rotated to separate the two hooks 62 from the corresponding clamping rods 63. Then the cover plate 55 is pulled upward to move the membrane filter plates 60 and the supporting plate 58 out, and when the supporting plate 58 moves upward, the inner wall of the filter box 53 and the grid plate 56 can be scraped, and the impurities filtered by the grid plate 56 can be scraped out, so that the impurities can be conveniently cleaned.

[0071] However, as known by those skilled in the art, the working principles and wiring methods of the delivery pump 8, the first electric push rod 15, the driving motor 22, the second electric push rod 38 and the booster pump 52 are common, which belong to conventional means or common knowledge, and will not be described here. Those skilled in the art can make any selection or arrangement according to their needs or convenience.

[0072] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. The embodiments of the present application and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An A / O and MBR wastewater treatment device for pig wastewater treatment, comprising a base (1), two vertical plates (2) are symmetrically and fixedly installed on one side of the top of the base (1), and the same impurity removal box (3) is fixedly installed on the top of the two vertical plates (2), an impurity removal plate (4) is arranged in the impurity removal box (3), a plurality of impurity removal holes (401) are equidistantly formed on the impurity removal plate (4), the top of the impurity removal plate (4) extends to above the impurity removal box (3) and is fixedly installed with a hanging plate (5), the hanging plate (5) is clamped on the top of the impurity removal box (3), a positioning strip (7) is fixedly installed on one side of the bottom of the impurity removal plate (4), a limiting strip (6) is fixedly installed on the inner wall of one side of the impurity removal box (3), and the positioning strip (7) is clamped with the limiting strip (6), characterized in that, The wastewater treatment device further comprises: A reaction mechanism is installed on the top of the base (1), one side of the reaction mechanism extends into the impurity removal box (3) and is connected with the inner wall of the bottom of the impurity removal box (3), and the reaction mechanism is used for anaerobic reaction and aerobic reaction of the wastewater; An oxygen removal mechanism is installed on the reaction mechanism, and the oxygen removal mechanism is used for discharging oxygen when the wastewater is subjected to anaerobic reaction; A filtering mechanism is installed on the top of the base (1), the filtering mechanism is connected with the oxygen removal mechanism, and the filtering mechanism is used for MBR membrane filtration of the wastewater after anaerobic reaction and aerobic reaction; The reaction mechanism comprises a delivery pump (8) and a reaction box (11) which are fixedly installed on the top of the base (1), the delivery pump (8) is located between the impurity removal box (3) and the reaction box (11), the reaction box (11) is fixedly installed with a partition plate (12) therein, a plurality of air holes (25) are arranged on the inner wall of the reaction box (11) at equal intervals and are located below the partition plate (12), a flow hole is arranged on the partition plate (12), a sealing ring (18) is fixedly installed on the bottom of the partition plate (12) and communicates with the flow hole, a dispersion assembly is installed on the top of the reaction box (11) and extends into the reaction box (11), the dispersion assembly penetrates through the flow hole and the sealing ring (18) and is in close contact with the inner wall of the sealing ring (18), the dispersion assembly is used for centrifugal dispersion of the wastewater, the oxygen removal mechanism is installed on the reaction box (11), and one side of the filtering mechanism extends into the reaction box (11) and is connected with the inner wall of the other side of the bottom of the reaction box (11); The dispersion assembly comprises a transmission ring (20) which is rotationally connected to the top of the reaction box (11), two clamping grooves are symmetrically arranged on the top of the transmission ring (20), a rotating shaft (16) is arranged in the transmission ring (20), the bottom end of the rotating shaft (16) penetrates through the flow hole and the sealing ring (18) and extends below the sealing ring (18), clamping plates (21) are fixedly installed on the top of the two sides of the rotating shaft (16), the clamping plates (21) are movably clamped with the corresponding clamping grooves, a sealing disc (19) is fixedly sleeved on the rotating shaft (16), and the sealing disc (19) penetrates through the flow hole and the sealing ring (18) and is in close contact with the flow hole and the sealing ring (18) respectively; The other side of the top of the reaction box (11) is fixedly installed with a mounting bracket (13), a moving plate (14) is slidably connected in the mounting bracket (13), one side of the moving plate (14) extends to the outside of the mounting bracket (13), the top end of the rotating shaft (16) is rotationally connected with the bottom of the moving plate (14), a first electric push rod (15) is fixedly installed on the top of the mounting bracket (13), and the output shaft of the first electric push rod (15) extends into the mounting bracket (13) and is fixedly connected with the top of the moving plate (14).

2. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 1, characterized in that, The suction end of the conveying pump (8) is fixedly provided with a drain pipe (9), the top end of the drain pipe (9) extends into the impurity removal box (3) and is fixedly connected with the bottom inner wall of the impurity removal box (3), the output end of the conveying pump (8) is fixedly provided with a conveying pipe (10), the top end of the conveying pipe (10) extends into the reaction box (11) and is fixedly connected with the top inner wall of one side of the reaction box (11), and a one-way valve (1001) is fixedly provided in the conveying pipe (10).

3. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 1, characterized in that, The transmission ring (20) is fixedly provided with a driven bevel gear (24), the top of the reaction box (11) is fixedly provided with a driving motor (22), the output shaft of the driving motor (22) is fixedly provided with a driving bevel gear (23), the driving bevel gear (23) is engaged with the driven bevel gear (24), and the rotating shaft (16) is fixedly provided with two dispersing discs (17), and the two dispersing discs (17) are located above and below the partition plate (12) respectively.

4. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 1, characterized by, The oxygen removal mechanism comprises a first supporting pipe (26) and a second supporting pipe (28) which are fixedly provided on the top inner walls of the two sides of the reaction box (11) respectively, the first supporting pipe (26) and the second supporting pipe (28) extend to the outside of the two sides of the reaction box (11) respectively at the ends away from each other, one end of the second supporting pipe (28) is fixedly provided with an exhaust cover (27), the first supporting pipe (26) is slidably connected with a first gas feeding cover (29) penetrating therethrough, the top inner wall and the bottom inner wall of the first gas feeding cover (29) are both provided with a first gas feeding hole (30), the second supporting pipe (28) is slidably connected with a second gas feeding cover (32) penetrating therethrough, the top inner wall and the bottom inner wall of the second gas feeding cover (32) are both provided with a second gas feeding hole (33), and the side of the first gas feeding cover (29) and the second gas feeding cover (32) away from each other is fixedly provided with a same mounting ring (31) located in the reaction box (11), the top of the reaction box (11) is provided with a position adjusting assembly, the position adjusting assembly is connected with the first gas feeding cover (29), and a gas feeding assembly is connected with the position adjusting assembly and the transmission ring (20).

5. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 4, characterized in that, The position adjusting assembly comprises a supporting frame (36) fixedly provided on the top of the reaction box (11), a moving frame (37) slidably connected with the supporting frame (36), a moving hole formed in the supporting frame (36), an installation plate (39) fixedly provided on the bottom of the moving frame (37), the bottom of the installation plate (39) penetrating through the moving hole and extending below the supporting frame (36), the installation plate (39) being fixedly provided on the first gas feeding cover (29), a second electric push rod (38) fixedly provided on one side of the supporting frame (36), the output shaft of the second electric push rod (38) penetrating through the supporting frame (36) and being fixedly connected with one side of the moving frame (37), and the gas feeding assembly penetrating through the moving frame (37) and being connected with the moving frame (37).

6. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 5, characterized in that, The gas feeding assembly comprises a power box (34) fixedly installed on one side of the opening of the first gas feeding cover (29), the power box (34) is communicated with the first gas feeding cover (29), an air inlet pipe (35) is fixedly installed on the inner wall of one side of the power box (34), one end of the air inlet pipe (35) extends to the outside of the power box (34) and is used for connecting an externally connected nitrogen gas feeding pipeline, a blade shaft (42) is rotatably connected in the power box (34), an air suction blade (43) is fixedly installed on one end of the blade shaft (42), a driving bevel gear (44) is fixedly installed on the other end of the blade shaft (42), a transmission shaft (40) is rotatably connected through the bottom of the moving frame (37), a connecting bevel gear (41) is fixedly installed on the bottom end of the transmission shaft (40) and extends into the power box (34), the connecting bevel gear (41) is engaged with the driving bevel gear (44), a driving shaft (46) is rotatably connected on the moving frame (37), a driven gear (48) is fixedly installed on the top end of the driving shaft (46), a driving gear (47) is fixedly sleeved on the transmission ring (20) and engaged with the driven gear (48), a synchronous wheel (49) is fixedly sleeved on the driving shaft (46) and the transmission shaft (40), and the same synchronous belt (50) is drivingly sleeved on the two synchronous wheels (49).

7. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 1, characterized in that, The filter mechanism comprises a blowdown pipe (51) fixedly installed on the inner wall of the bottom of one side of the reaction box (11), one end of the blowdown pipe (51) extends to the outside of the reaction box (11), a booster pump (52) is fixedly installed on the top of the base (1), one end of the blowdown pipe (51) is connected with the suction end of the booster pump (52), a flow pipe (45) is fixedly installed on the output end of the booster pump (52), a filter box (53) is fixedly installed on the top of the base (1), a cover plate (55) is clamped on the top of the filter box (53), the top end of the flow pipe (45) extends into the filter box (53) and is fixedly connected with the top inner wall of one side of the filter box (53), a grid plate (56) is fixedly installed in the filter box (53), two installation rods (57) are fixedly installed on the bottom of one side of the cover plate (55) in a symmetrical manner, the bottom ends of the two installation rods (57) extend into the filter box (53) and are fixedly installed with the same supporting plate (58), the supporting plate (58) is in contact with the inner wall of the filter box (53) corresponding to the other side and the side of the grid plate (56), an external connection pipe (54) is fixedly installed on the other side of the bottom inner wall of the filter box (53), a plurality of membrane filter plates (60) are fixedly installed on the bottom of the cover plate (55) at equal intervals, a plurality of limiting frames (59) are fixedly installed in the filter box (53) at equal intervals, and the membrane filter plates (60) are clamped with the corresponding limiting frames (59).

8. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 7, characterized in that, The top of the cover plate (55) is rotatably connected with a fixed shaft (61), two hooks (62) are fixedly sleeved on the fixed shaft (61), clamping rods (63) are fixedly installed on the top of the two sides of the filter box (53), and the hooks (62) are clamped with the corresponding clamping rods (63).

9. The A / O and MBR wastewater treatment device for pig wastewater treatment according to claim 8, characterized in that, The fixed shaft (61) is fixedly installed with a limiting cover (64), the limiting cover (64) is slidably connected with an inserting plate (65), the top of the cover plate (55) is fixedly installed with a locking plate (66), the locking plate (66) is provided with an inserting hole, one side of the inserting plate (65) penetrates the inserting hole and is clamped with the inserting hole, the top inner wall of the limiting cover (64) is provided with an adjusting hole, the top of the inserting plate (65) is fixedly installed with a handle (67), the top of the handle (67) penetrates the adjusting hole and extends to the top of the limiting cover (64), the other side of the inserting plate (65) is fixedly installed with a compression spring (68), one end of the compression spring (68) is fixedly connected with the inner wall of one side of the limiting cover (64).

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