Coal mine production circulating water filtering device and use method

Abstract

The present application relates to the technical field of filtering device, especially to coal mine production circulating water filtering device, including sedimentation tank, biological filter tank and membrane filter tank, also including first water pump, first water pipe, second water pipe, second water pump, third water pipe and fourth water pipe, the present application combines biological filter tank and membrane separation technology, uses aerobic microorganism to carry out biological oxidation treatment to organic matter in sewage, sewage and the gap contact between the microbial membrane grown on the surface of filler, so that the sewage is purified, the microorganism forms a layer of high activity biological membrane on the surface of filter material, removes organic matter, nitride and suspended particulate matter in sewage through adsorption and degradation, the membrane has very high separation efficiency, can effectively separate pollutants and impurities, improves separation efficiency under the condition of ensuring water treatment effect, reduces membrane pollution, reduces energy consumption, improves cleaning effect of the membrane, shortens cleaning time, avoids membrane blockage, and keeps water flow unobstructed.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and more particularly to a coal mine production circulating water filtration device and its usage method. Background Technology

[0002] In the coal mine production process, circulating water is generated, which contains a large amount of suspended solids, impurities, and organic matter. Direct discharge of this water would cause serious environmental pollution. Therefore, it is necessary to treat the circulating water to meet environmental protection requirements. Traditional treatment methods mainly include sedimentation and filtration. Sedimentation removes suspended solids from the circulating water through gravity sedimentation. During the treatment process, flocculants are added to coagulate the suspended solids into larger particles, making them easier to separate and settle. However, this method is not very effective for biological and organic pollution. Filtration removes impurities from the circulating water through filters. This method can effectively remove suspended solids, particulate matter, and microorganisms, but it is not very effective for removing organic matter.

[0003] In addition to traditional treatment methods, there are membrane separation and biological methods. Membrane separation is a method of separating and purifying circulating water by utilizing the special properties of membranes. It can effectively remove trace amounts of suspended solids, organic matter, and inorganic salts. Biological methods use the metabolic activity of microorganisms to remove organic matter and nutrients such as nitrogen and phosphorus from circulating water, which can purify circulating water to the water quality standard that can be directly reused. However, existing membrane separation methods are prone to membrane clogging and are difficult to clean, increasing maintenance costs. Biological filtration has the problem of incomplete treatment effect.

[0004] Therefore, in view of the problems of membrane clogging and difficulty in cleaning, which increases maintenance costs, and the incomplete treatment effect of biological filtration, a coal mine production circulating water filtration device and its usage method can be designed. Summary of the Invention

[0005] To overcome the problems of membrane separation methods, such as easy clogging and difficulty in cleaning, which increases maintenance costs, and biological filtration methods, which have the problem of incomplete treatment effect.

[0006] The technical solution of the present invention is as follows: a coal mine production circulating water filtration device, comprising a sedimentation tank, a biological filtration tank and a membrane filtration tank; and further comprising a first water pump, a first water pipe, a second water pipe, a second water pump, a third water pipe and a fourth water pipe; The sedimentation tank includes a bottom plate; support columns are fixedly connected to the four corners of the upper part of the bottom plate; a sedimentation tank body is fixedly connected to the upper part of the support columns; sludge hoppers distributed at equal intervals are fixedly connected to the lower part of the sedimentation tank body; wing plates distributed at equal intervals along the transverse direction are fixedly connected inside the sedimentation tank body; a limit chute plate is fixedly connected to the upper right side of the sedimentation tank body; a racetrack-shaped internal gear is slidably connected inside the limit chute plate; a drive gear that meshes with the racetrack-shaped internal gear is rotatably connected inside the limit chute plate; a connecting block is fixedly connected to the right end of the racetrack-shaped internal gear; a hopper is fixedly connected to the right end of the connecting block; and a circular aeration pipe is installed at the upper part of the bottom right side of the sedimentation tank body. The biological filtration tank includes a filter box; a grid is fixedly connected to the lower side of the filter box; a support layer and filter media are arranged sequentially on the upper side of the grid; and a water distributor is installed on the upper side of the filter box. The membrane filtration tank includes an outer casing; inside the outer casing, a first membrane and a second membrane are installed sequentially from left to right; an outlet pipe is installed on the upper left side of the outer casing; a filtered water discharge pipe connected to the first and second membranes is installed at the lower end of the outlet pipe; fixed plates are fixedly connected to the upper and lower sides of the inner wall on the left side of the outer casing; a ball screw is rotatably connected between the two fixed plates; a vertically movable screw pair is installed on the outside of the ball screw; a lifting aeration pipe is fixedly connected to the right end of the screw pair.

[0007] Preferably, a compressed gas inlet pipe connected to a circular aeration pipe is installed on the lower right side of the sedimentation tank; and a water inlet pipe extending into the sedimentation tank is installed on the upper right side of the sedimentation tank.

[0008] Preferably, a drain valve is fixedly connected to the lower end of the sedimentation sludge hopper; a sludge discharge pipe is fixedly connected to the lower end of the drain valve; and a first motor connected to the drive gear is fixedly connected to the left end of the limiting slide plate.

[0009] Preferably, a first water pump is fixedly connected to the right end of the filter box; a first water pipe connected to the outlet on the upper left side of the sedimentation box is installed at the inlet end of the first water pump; and a second water pipe connected to the water distributor is installed at the outlet end of the first water pump.

[0010] Preferably, the support layer is any one or a combination of natural gravel, natural pebbles, heavy ore and palm fiber; the filter media is any one or a combination of quartz sand, anthracite, marble, garnet, dolomite, polystyrene foam and fiber balls.

[0011] Preferably, the lower ends of the first and second diaphragms are fixedly connected to fixed seats that are symmetrically distributed front and back and connected to the upper end of the bottom of the outer casing; the inner wall of the right side of the outer casing is fixedly connected to vertical guide rails that are symmetrically distributed front and back; a guide slider connected to the lifting aeration pipe is slidably connected in the vertical guide rails; and a second motor connected to a ball screw is installed at the upper end of the fixed plate.

[0012] Preferably, a second water pump is fixedly connected to the right end of the outer casing; a third water pipe connected to the outlet of the filter box is installed at the inlet end of the second water pump; and a fourth water pipe extending into the outer casing is installed at the outlet end of the second water pump.

[0013] A method for using a coal mine production circulating water filtration device, comprising the coal mine production circulating water filtration device as described in any of the above-mentioned embodiments, comprising the following steps: Step 1: Add water treatment agent to the silo, start the first motor, drive the drive gear to select, the drive gear intermittently meshes with the teeth on the upper and lower sides of the racetrack-shaped internal gear, the racetrack-shaped internal gear moves back and forth in the limit slide plate, the connecting block drives the silo to move back and forth, evenly sprinkle the water treatment agent in the sedimentation tank, compressed air is sent in through the compressed gas inlet pipe, the compressed air is evenly sent into the sedimentation tank through the circular aeration pipe, circulating water enters the right side of the sedimentation tank through the water inlet pipe, the compressed air comes into strong contact with the water, dissolves the oxygen in the air into the water, or releases unwanted gases and volatile substances in the water into the air, the water treatment agent reacts with the circulating water, further accelerating the treatment effect, as the circulating water increases, the circulating water passes through the wing plate in sequence, under the action of gravity, the sludge settles in the sedimentation sludge hopper, finally open the drain valve, and discharge the sludge through the sludge discharge pipe, turn on the first water pump, and supply the treated water in the sedimentation tank to the water distributor through the first water pipe and the second water pipe; Step 2: The water distributor sprays water evenly onto the support layer and filter media inside the filter box. The water comes into contact with the microbial film growing on the surface of the filter media, thus purifying the wastewater. The purified water falls into the bottom of the filter box through the grille. The second water pump is turned on, and the treated water is sent into the outer box through the third and fourth water pipes. Step 3: Compressed air is introduced into the lifting aeration pipe. The sewage inside the outer box is filtered by the first and second membranes and then discharged through the outlet pipe and the filtered water discharge pipe. Step 4: When cleaning is required, stop the entire device, send clean water into the outer chamber, start the second motor, drive the ball screw between the fixed plates, the screw pair converts the rotary motion of the ball screw into linear motion, driving the fixed seat and the lifting aeration pipe to move up and down. The guide slider at the right end of the lifting aeration pipe slides up and down in the vertical guide rail. Aerate for 24 hours to flush impurities on the first and second membranes.

[0014] The beneficial effects of this invention are as follows: It combines biological filters and membrane separation technology, utilizing aerobic microorganisms to biologically oxidize organic matter in wastewater. Wastewater comes into intermittent contact with the microbial membrane growing on the filter media surface, thus purifying the wastewater. Microorganisms form a highly active biofilm on the filter media surface, removing organic matter, nitrogen oxides, and suspended particulate matter from the wastewater through adsorption and degradation. The membrane has extremely high separation efficiency, effectively separating pollutants and impurities. While ensuring water treatment effect, it improves separation efficiency, reduces membrane fouling, lowers energy consumption, is more environmentally friendly, and reduces operating costs. The lifting aeration pipe adopts a liftable design, which improves the cleaning effect of the membrane, shortens the cleaning time, avoids membrane clogging, and maintains smooth water flow. Attached Figure Description

[0015] Figure 1 The diagram shown is a first three-dimensional structural schematic of the coal mine production circulating water filtration device of the present invention. Figure 2 The diagram shown is a second three-dimensional structural schematic of the coal mine production circulating water filtration device of the present invention. Figure 3 The diagram shown is a three-dimensional cross-sectional view of the sedimentation tank in the coal mine production circulating water filtration device of the present invention. Figure 4 The diagram shows a three-dimensional structure of the limiting slide plate and the racetrack-shaped internal gear in the coal mine production circulating water filtration device of the present invention. Figure 5 The diagram shown is a three-dimensional cross-sectional view of the biological filter tank in the coal mine production circulating water filtration device of the present invention. Figure 6 The diagram shown is a three-dimensional structural schematic of the membrane filter tank in the coal mine production circulating water filtration device of the present invention.

[0016] Explanation of reference numerals in the attached figures: Sedimentation tank: 101. Bottom plate; 102. Support column; 103. Sedimentation tank body; 104. Sludge hopper; 105. Wing plate; 106. Limiting slide plate; 107. Racetrack-shaped internal gear; 108. Drive gear; 109. Connecting block; 110. Material bin; 111. Circular aeration pipe; 112. Compressed gas inlet pipe; 113. Water inlet pipe; 114. Sewage valve; 115. Sludge discharge pipe; 116. First motor; Biological filtration tank: 201, Filter box; 202, Bar screen; 203, Support layer; 204, Filter media; 205, Water distributor; Membrane filtration tank: 301, outer casing; 302, first membrane; 303, second membrane; 304, outlet pipe; 305, filtered water discharge pipe; 306, fixing plate; 307, ball screw; 308, screw pair; 309, lifting aeration pipe; 310, fixing base; 311, vertical guide rail; 312, guide slider; 313, second motor; 4. First water pump; 5. First water pipe; 6. Second water pipe; 7. Second water pump; 8. Third water pipe; 9. Fourth water pipe. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1-6 The present invention provides an embodiment of a coal mine production circulating water filtration device, which includes a sedimentation tank, a biological filtration tank and a membrane filtration tank; it also includes a first water pump 4, a first water pipe 5, a second water pipe 6, a second water pump 7, a third water pipe 8 and a fourth water pipe 9; The sedimentation tank includes a bottom plate 101; support columns 102 are fixedly connected to the four corners of the upper end of the bottom plate 101; a sedimentation tank 103 is fixedly connected to the upper end of the support columns 102; sedimentation sludge hoppers 104 are fixedly connected to the lower end of the sedimentation tank 103 at equal intervals; wing plates 105 are fixedly connected to the interior of the sedimentation tank 103 at equal intervals along the transverse direction; a limiting chute plate 106 is fixedly connected to the upper right side of the sedimentation tank 103; a racetrack-shaped internal gear 107 is slidably connected inside the limiting chute plate 106; a drive gear 108 is rotatably connected inside the limiting chute plate 106 and meshes with the racetrack-shaped internal gear 107; a connecting block 109 is fixedly connected to the right end of the racetrack-shaped internal gear 107; a hopper 110 is fixedly connected to the right end of the connecting block 109; and a circular aeration pipe 111 is installed at the upper end of the bottom right side of the sedimentation tank 103. The biological filtration tank includes a filter box 201; a grid 202 is fixedly connected to the lower side of the filter box 201; a support layer 203 and filter media 204 are sequentially arranged on the upper side of the grid 202; and a water distributor 205 is installed on the upper side of the filter box 201. The membrane filtration tank includes an outer casing 301; a first membrane 302 and a second membrane 303 are installed inside the outer casing 301 from left to right; an outlet pipe 304 is installed on the upper left side of the outer casing 301; a filtered water discharge pipe 305 connected to the first membrane 302 and the second membrane 303 is installed at the lower end of the outlet pipe 304; fixed plates 306 are fixedly connected to the upper and lower sides of the left inner wall of the outer casing 301; a ball screw 307 is rotatably connected between the two fixed plates 306; a vertically movable screw pair 308 is installed on the outside of the ball screw 307; a lifting aeration pipe 309 is fixedly connected to the right end of the screw pair 308.

[0019] Please see Figures 1-4In this embodiment, a compressed gas inlet pipe 112 connected to a circular aeration pipe 111 is installed on the lower right side of the sedimentation tank 103; a water inlet pipe 113 extending into the sedimentation tank 103 is installed on the upper right side of the sedimentation tank 103; a drain valve 114 is fixedly connected to the lower end of the sedimentation sludge hopper 104; a sludge discharge pipe 115 is fixedly connected to the lower end of the drain valve 114; a first motor 116 connected to a drive gear 108 is fixedly connected to the left end of the limiting slide plate 106; a first water pump 4 is fixedly connected to the right end of the filter box 201; a first water pipe 5 connected to the outlet on the upper left side of the sedimentation tank 103 is installed at the inlet end of the first water pump 4; and a second water pipe 6 connected to a water distributor 205 is installed at the outlet end of the first water pump 4.

[0020] Please see Figure 1 and Figures 5-6 In this embodiment, the support layer 203 is any one or a combination of natural gravel, natural pebbles, heavy ore, and palm fiber; the filter media 204 is any one or a combination of quartz sand, anthracite, marble, garnet, dolomite, polystyrene foam, and fiber balls; the lower ends of the first membrane 302 and the second membrane 303 are fixedly connected to fixed seats 310 that are symmetrically distributed front and back and connected to the upper bottom of the outer box 301; the inner wall of the right side of the outer box 301 is fixedly connected to vertical guide rails 311 that are symmetrically distributed front and back; a guide slider 312 connected to the lifting aeration pipe 309 is slidably connected inside the vertical guide rails 311; a second motor 313 connected to the ball screw 307 is installed on the upper end of the fixed plate 306; a second water pump 7 is fixedly connected to the right end of the outer box 301; a third water pipe 8 connected to the outlet of the filter box 201 is installed at the inlet end of the second water pump 7; a fourth water pipe 9 extending into the outer box 301 is installed at the outlet end of the second water pump 7.

[0021] A method for using a coal mine production circulating water filtration device, comprising the coal mine production circulating water filtration device as described in any of the above-mentioned embodiments, comprising the following steps: Step 1: Add water treatment agent to silo 110, start the first motor 116, driving the drive gear 108 to select. The drive gear 108 intermittently meshes with the teeth on the upper and lower sides of the racetrack-shaped internal gear 107. The racetrack-shaped internal gear 107 moves back and forth within the limiting slide plate 106. The connecting block 109 drives the silo 110 to reciprocate back and forth, evenly spreading the water treatment agent in the sedimentation tank 103. Compressed air is introduced through the compressed gas inlet pipe 112 and evenly distributed into the sedimentation tank 103 through the circular aeration pipe 111. Circulating water enters the sedimentation tank through the water inlet pipe 113. On the right side inside the tank 103, compressed air comes into strong contact with water, dissolving oxygen in the air into the water, or releasing unwanted gases and volatile substances from the water into the air. The water treatment agent reacts with the circulating water, further accelerating the treatment effect. As the circulating water increases, it passes through the wing plate 105 in sequence. Under the action of gravity, the sludge settles in the sedimentation sludge hopper 104. Finally, the drain valve 114 is opened, and the sludge is discharged through the sludge discharge pipe 115. The first water pump 4 is turned on, and the treated water in the sedimentation tank 103 is supplied to the water distributor 205 through the first water pipe 5 and the second water pipe 6. Step 2: The water distributor 205 sprays water evenly onto the support layer 203 and filter media 204 inside the filter box 201. The water comes into contact with the microbial film growing on the surface of the filter media 204, thus purifying the wastewater. The purified water falls into the bottom of the filter box 201 through the grille 202. The second water pump 7 is turned on, and the treated water is sent into the outer box 301 through the third water pipe 8 and the fourth water pipe 9. Step 3: Compressed air is introduced into the lifting aeration pipe 309. The sewage in the outer casing 301 is filtered by the first membrane 302 and the second membrane 303 and then discharged through the outlet pipe 304 and the filtered water discharge pipe 305. Step 4: When cleaning is required, stop the entire device, send clean water into the outer casing 301, start the second motor 313, drive the ball screw 307 between the fixed plates 306, the screw pair 308 converts the rotary motion of the ball screw 307 into linear motion, driving the fixed seat 310 and the lifting aeration pipe 309 to move up and down, the guide slider 312 at the right end of the lifting aeration pipe 309 slides up and down in the vertical guide rail 311, aerate for 24 hours, and flush the impurities on the first membrane 302 and the second membrane 303.

[0022] Through the above steps, biological filters and membrane separation technology are combined. Aerobic microorganisms are used to biologically oxidize organic matter in wastewater. Wastewater comes into contact with the microbial membrane growing on the surface of the filter media, thus purifying the wastewater. Microorganisms form a highly active biofilm on the surface of the filter media, removing organic matter, nitrogen oxides, and suspended particulate matter from the wastewater through adsorption and degradation. Membrane separation has extremely high separation efficiency, effectively separating pollutants and impurities. While ensuring water treatment effect, it improves separation efficiency, reduces membrane fouling, lowers energy consumption, is more environmentally friendly, and reduces operating costs. It also improves the cleaning effect of membranes, shortens cleaning time, avoids membrane clogging, and maintains smooth water flow. This solves the problems of membrane clogging and difficulty in cleaning, which increases maintenance costs, and biological filtration, which has the problem of incomplete treatment effect.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A coal mine production circulating water filtration device, comprising a sedimentation tank, a biological filtration tank, and a membrane filtration tank; characterized in that: It also includes a first water pump (4), a first water pipe (5), a second water pipe (6), a second water pump (7), a third water pipe (8), and a fourth water pipe (9); The sedimentation tank includes a bottom plate (101); support columns (102) are fixedly connected to the four corners of the upper end of the bottom plate (101); a sedimentation tank (103) is fixedly connected to the upper end of the support columns (102); sludge hoppers (104) are fixedly connected to the lower end of the sedimentation tank (103); wing plates (105) are fixedly connected to the interior of the sedimentation tank (103) and are equidistantly distributed in the transverse direction; a limit chute plate (104) is fixedly connected to the upper right side of the sedimentation tank (103). 06); A racetrack-shaped internal gear (107) is slidably connected inside the limiting slide plate (106); A drive gear (108) that meshes with the racetrack-shaped internal gear (107) is rotatably connected inside the limiting slide plate (106); A connecting block (109) is fixedly connected to the right end of the racetrack-shaped internal gear (107); A hopper (110) is fixedly connected to the right end of the connecting block (109); A circular aeration pipe (111) is installed at the upper end of the bottom right side of the sedimentation tank (103); The biological filtration tank includes a filter box (201); a grid (202) is fixedly connected to the lower side of the filter box (201); a support layer (203) and filter media (204) are arranged sequentially on the upper side of the grid (202); a water distributor (205) is installed on the upper side of the filter box (201). The membrane filtration tank includes an outer casing (301); a first membrane (302) and a second membrane (303) are installed inside the outer casing (301) from left to right; an outlet pipe (304) is installed on the upper left side of the outer casing (301); a filtered water discharge pipe (305) connected to the first membrane (302) and the second membrane (303) is installed at the lower end of the outlet pipe (304); fixed plates (306) are fixedly connected to the upper and lower sides of the left inner wall of the outer casing (301); a ball screw (307) is rotatably connected between the two fixed plates (306); a vertically movable screw pair (308) is installed on the outside of the ball screw (307); a lifting aeration pipe (309) is fixedly connected to the right end of the screw pair (308). A compressed gas inlet pipe (112) connected to a circular aeration pipe (111) is installed on the lower right side of the sedimentation tank (103); a water inlet pipe (113) extending into the sedimentation tank (103) is installed on the upper right side of the sedimentation tank (103). A first water pump (4) is fixedly connected to the right end of the filter box (201); a first water pipe (5) is installed at the inlet end of the first water pump (4) and connected to the water outlet on the upper left side of the sedimentation box (103); a second water pipe (6) is installed at the outlet end of the first water pump (4) and connected to the water distributor (205). The support layer (203) is any one or more of natural gravel, natural pebbles, heavy minerals and palm fibers; the filter media (204) is any one or more of quartz sand, anthracite, marble, garnet, dolomite, polystyrene foam and fiber balls. The lower ends of the first diaphragm (302) and the second diaphragm (303) are fixedly connected to fixed seats (310) that are symmetrically distributed front and back and connected to the upper end of the bottom of the outer box (301); the inner wall of the right side of the outer box (301) is fixedly connected to vertical guide rails (311) that are symmetrically distributed front and back; a guide slider (312) connected to the lifting aeration pipe (309) is slidably connected inside the vertical guide rail (311); a second motor (313) connected to the ball screw (307) is installed at the upper end of the fixed plate (306). A second water pump (7) is fixedly connected to the right end of the outer casing (301); a third water pipe (8) connected to the outlet of the filter box (201) is installed at the inlet end of the second water pump (7); a fourth water pipe (9) extending into the outer casing (301) is installed at the outlet end of the second water pump (7).

2. The coal mine production circulating water filtration device according to claim 1, characterized in that: A sludge hopper (104) is fixedly connected to a drain valve (114) at its lower end; a sludge discharge pipe (115) is fixedly connected to the lower end of the drain valve (114); and a first motor (116) connected to a drive gear (108) is fixedly connected to the left end of the limiting slide plate (106).

3. The method of using a coal mine production circulating water filtration device, characterized in that... The coal mine production circulating water filtration device according to any one of claims 1-2 comprises the following steps: Step 1: Add water treatment agent to the silo (110), start the first motor (116), drive the drive gear (108) to rotate, the drive gear (108) intermittently meshes with the teeth on the upper and lower sides of the racetrack-shaped internal gear (107), the racetrack-shaped internal gear (107) moves back and forth in the limiting slide plate (106), the connecting block (109) drives the silo (110) to move back and forth, evenly spreading the water treatment agent in the sedimentation tank (103), compressed air is sent in through the compressed gas inlet pipe (112), the compressed air is evenly sent into the sedimentation tank (103) through the circular aeration pipe (111), and circulating water is sent through the water inlet pipe (113). Entering the right side of the sedimentation tank (103), compressed air comes into strong contact with water, dissolving oxygen in the air into the water, or releasing unwanted gases and volatile substances in the water into the air. The water treatment agent reacts with the circulating water, further accelerating the treatment effect. As the circulating water increases, the circulating water passes through the wing plate (105) in sequence. Under the action of gravity, the sludge settles in the sedimentation sludge hopper (104). Finally, the drain valve (114) is opened, and the sludge is discharged through the sludge discharge pipe (115). The first water pump (4) is turned on, and the treated water in the sedimentation tank (103) is supplied to the water distributor (205) through the first water pipe (5) and the second water pipe (6). Step 2: The water distributor (205) sprays water evenly onto the support layer (203) and filter media (204) inside the filter box (201). The water comes into contact with the microbial film growing on the surface of the filter media (204), thus purifying the wastewater. The purified water falls into the bottom of the filter box (201) through the grid (202). The second water pump (7) is turned on, and the treated water is sent into the outer box (301) through the third water pipe (8) and the fourth water pipe (9). Step 3: Compressed air is introduced into the lifting aeration pipe (309). The sewage in the outer casing (301) is filtered by the first membrane (302) and the second membrane (303) and then discharged through the outlet pipe (304) and the filtered water discharge pipe (305). Step 4: When cleaning is required, stop the entire device, send clean water into the outer casing (301), start the second motor (313), drive the ball screw (307) between the fixed plates (306), the screw pair (308) converts the rotational motion of the ball screw (307) into linear motion, driving the fixed seat (310) and the lifting aeration pipe (309) to move up and down. The guide slider (312) at the right end of the lifting aeration pipe (309) slides up and down in the vertical guide rail (311). Aerate for 24 hours to flush the impurities on the first membrane (302) and the second membrane (303).

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