A glass fiber wastewater treatment device

Abstract

This invention relates to the field of wastewater treatment equipment technology, specifically a glass fiber wastewater treatment device, comprising a shell with an internal cavity, an inlet located on the upper surface of the shell, a reaction tank fixedly installed in the middle of the cavity, a fixing plate fixedly installed on the inner top wall of the cavity, and a motor fixedly installed on the upper surface of the shell. This invention utilizes the compression and extension of two elastic air bladders to simultaneously force flocculant and air into the reaction cavity, increasing the sedimentation and aeration speed. Furthermore, the wastewater is heated by the interaction between a rotating iron block and a magnet, further enhancing the sedimentation and flotation rates of the precipitates.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a glass fiber wastewater treatment device. Background Technology

[0002] Glass fiber is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. However, its disadvantages include brittleness and poor wear resistance. It is made from six minerals—pyrophyllite, quartz sand, limestone, dolomite, borocalcite, and boromagnesia—through high-temperature melting, drawing, winding, and weaving processes. The diameter of its single filaments ranges from a few micrometers to over twenty micrometers, equivalent to 1 / 20 to 1 / 5 the diameter of a human hair. Each bundle of fiber consists of hundreds or even thousands of single filaments. Glass fiber is commonly used as a reinforcing material in composite materials, an electrical insulation material, a thermal insulation material, and in circuit boards, among other applications across various sectors of the national economy.

[0003] my country's glass fiber industry is a world leader, ranking first in glass fiber production. With increasingly stringent environmental regulations and stricter oversight of wastewater and exhaust gases, companies are being prompted to adopt more advanced and efficient wastewater treatment processes. Glass fiber wastewater is an organic wastewater, its properties depending on the types of wetting agents it contains. It mainly consists of lipids, emulsifiers, water-soluble organic matter, toxic substances, small amounts of glass fiber, and residues. During glass fiber production, to make it soft and elastic, a brightening agent composed of unsaturated polyester resin, petroleum ether, and machine lubricating oil is sprayed onto the fiber before cooling. This brightening agent is discharged along with the cooling water, resulting in milky-white glass fiber production wastewater that affects resource recovery and reuse.

[0004] For this type of wastewater, the first step is to remove suspended solids using effective methods. Current technologies involve adding chemicals (commonly known as coagulants and flocculants) to the water, causing particles that are difficult to settle to aggregate and form colloids. These colloids then combine with impurities in the water to form larger flocs. These flocs have strong adsorption capacity, adsorbing not only suspended solids but also some bacteria and dissolved substances. Through adsorption, the flocs increase in size and settle. However, because organic polymer particles are lightweight, fine, and settle slowly, sedimentation methods not only have limited sedimentation tank area capacity but also require large amounts of chemicals. Furthermore, conventional coagulation and sedimentation methods are not ideal for treating this type of wastewater.

[0005] In view of this, a glass fiber wastewater treatment device is proposed to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a glass fiber wastewater treatment device that solves the following technical problems: Firstly, due to the light weight, fine particle size, and slow sedimentation of organic polymer particles in glass fiber wastewater, the use of sedimentation methods results in small sedimentation tank area capacity and requires large dosages. Secondly, it addresses the issue that sedimentation and filtration rates decrease, as does aeration rate, when the ambient temperature drops.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A glass fiber wastewater treatment device, comprising:

[0009] A housing, wherein a device cavity is provided inside the housing;

[0010] Liquid inlet, wherein the liquid inlet is disposed on the upper surface of the housing;

[0011] A reaction vessel, which is fixedly installed in the middle of the device cavity;

[0012] A fixing plate is fixedly installed on the inner top wall of the device cavity;

[0013] An electric motor, which is fixedly mounted on the upper surface of the housing;

[0014] The fixed plate has a sliding cavity inside, and a first elastic airbag and a second elastic airbag are symmetrically fixedly connected to the two side walls of the sliding cavity. A third one-way valve and a fourth one-way valve are symmetrically fixedly installed inside one side wall of the fixed plate. The third one-way valve is connected to the outside, and the fourth one-way valve is connected to the second conduit.

[0015] Preferably, the liquid inlet is connected to the reaction vessel via a liquid inlet pipe. The liquid inlet pipe is equipped with a first grid, a second grid, and a third grid at equal intervals. The first grid, the second grid, and the third grid are all fixedly connected to a tie rod, and one end of the tie rod has a diameter larger than the diameter of the liquid inlet pipe.

[0016] Preferably, the width of the bars of the first grille is 30mm.

[0017] Preferably, the width of the bars in the second grille is 20mm.

[0018] Preferably, the width of the bars of the third grille is 15mm.

[0019] Preferably, a first one-way valve and a second one-way valve are symmetrically arranged inside the other side wall of the fixing plate. The first one-way valve is connected to a storage tank containing flocculant, and the second one-way valve is connected to a reaction tank through a first pipe.

[0020] Preferably, the flocculant is a polyacrylamide solution.

[0021] Preferably, the rotating rod passes through the reaction vessel and extends into the reaction chamber. One end of the rotating rod is fixedly installed with a stirring rod inside the reaction chamber. A circular plate is fixedly connected to the bottom wall of the reaction vessel. Multiple magnets are embedded in the upper surface of the circular plate at equal intervals around the circumference. The magnets of each pair of adjacent magnets have opposite magnetic properties. An iron block that cooperates with the magnet is embedded inside the stirring rod.

[0022] Preferably, the outer edge of the rotating rod is threaded, and a nut is threadedly connected to the inside of the reaction chamber. The nut is rotatably connected to a bearing, and a filter plate is fixedly installed on the outer edge of the bearing.

[0023] The inner wall of the reaction chamber is provided with a sliding groove that mates with the filter plate. Springs are symmetrically fixed to the inner bottom wall of the sliding groove, and one end of each of the two springs is fixedly connected to the lower surface of the filter plate.

[0024] Preferably, a drain pipe is fixedly installed on the inner bottom wall of the device cavity, an air jet is fixedly installed on the inner side wall of the reaction cavity, and a drain port that cooperates with the drain pipe is opened on the side wall of the reaction tank.

[0025] A water pump is fixedly installed on the inner bottom wall of the device cavity, and the water pump is connected to the reaction tank through a drain pipe.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. The glass fiber wastewater treatment equipment of the present invention can treat glass fiber wastewater by aeration flocculation. The cam is driven by a motor to rotate, and the rotating cam will regularly squeeze the elastic air bladders on both sides. The squeezed elastic air bladders will squeeze flocculant and air into the reaction chamber in turn. The flocculant combines with the wastewater to form suspended solids. The air outlet sprays air into the wastewater to form bubbles. Then the bubbles rise and carry the suspended solids to the surface. Compared with the prior art, which continuously adds flocculant to combine with the wastewater to form suspended solids until the suspended solids can settle, the present invention shortens the wastewater treatment time and reduces the amount of flocculant used by using the rising bubbles to carry the suspended solids to the surface.

[0028] 2. In the glass fiber wastewater treatment equipment described in this invention, when the rotating rod rotates, the iron block inside the stirring rod is pressed against the rotating rod, and the magnet inside the circular plate below the reaction tank will form a magnetic field. When the stirring blade rotates, the iron block rotates in the magnetic field. Since the magnetism of each adjacent pair of magnets in the circular plate is opposite, it is equivalent to placing the iron block in a changing magnetic field. As a result, an induced current will be generated inside the iron block. Due to the heating effect of the metal current, the iron block will heat up. While the stirring blade is stirring, the reaction tank is heated, which further increases the speed of bubble rising and shortens the wastewater treatment time. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the circular plate structure;

[0032] Figure 4 for Figure 2 Enlarged view of the structure at point A;

[0033] Figure 5 for Figure 2 Enlarged view of the structure at point B;

[0034] Figure 6 for Figure 2 Enlarged view of the structure at point C.

[0035] In the diagram: 1. Shell, 2. Device cavity, 3. Liquid inlet, 4. Reaction tank, 5. Reaction chamber, 6. Pump, 7. Drain pipe, 8. Motor, 9. Liquid inlet pipe, 10. Fixing plate, 11. Sliding cavity, 12. Rotating rod, 13. Cam, 14. First elastic airbag, 15. First one-way valve, 16. Second one-way valve, 17. First pipe, 18. Second elastic airbag, 19. Third one-way valve, 20. Fourth one-way valve, 21. Second conduit, 22. Air inlet, 23. Air jet inlet, 24. Stirring rod, 25. Iron block, 26. Circular plate, 27. Magnet, 28. First grid, 29. Nut, 30. Bearing, 31. Filter plate, 32. Slide groove, 33. Spring, 34. Drain outlet, 35. Drain pipe, 36. Second grid, 37. Third grid, 38. Pull rod. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention provides a glass fiber wastewater treatment device that solves the technical problems of glass fiber wastewater having low specific gravity, fine particles, and slow sedimentation due to the light weight of organic polymer particles, resulting in small sedimentation tank area capacity and large required dosage when using sedimentation methods; and the technical problem that the sedimentation and filtration rate and aeration rate decrease when the ambient temperature decreases.

[0038] The technical solution in this invention aims to solve the aforementioned technical problems. The overall approach is as follows: Glass fiber wastewater is treated using an aeration flocculation method. A motor drives a cam to rotate, which regularly squeezes elastic air bladders on both sides. The squeezed air bladders then sequentially force flocculant and air into the reaction chamber. The flocculant combines with the wastewater to form suspended solids. Air is sprayed into the wastewater through an air outlet to form bubbles. These bubbles then rise, carrying the suspended solids with them. Compared to existing technologies, which rely on continuously adding flocculant to combine with wastewater to form suspended solids until the solids settle, this invention utilizes bubbles... The upward movement of suspended solids shortens wastewater treatment time and reduces the amount of flocculant used. When the rotor rotates, the iron block inside the stirring rod is pressed against the rotating surface, while the magnet inside the circular plate below the reaction tank creates a magnetic field. When the stirring blades rotate, the iron block rotates in the magnetic field. Since the magnets of each adjacent pair in the circular plate have opposite magnetic properties, it is equivalent to placing the iron block in a changing magnetic field. As a result, an induced current is generated inside the iron block. Due to the heating effect of the metal current, the iron block heats up. While the stirring blades are stirring, the reaction tank is heated, further increasing the speed at which bubbles rise and shortening wastewater treatment time.

[0039] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0040] like Figures 1 to 6 As shown, the present invention provides a glass fiber wastewater treatment device, comprising:

[0041] Housing 1, wherein a device cavity 2 is provided inside the housing 1;

[0042] Liquid inlet 3 is disposed on the upper surface of housing 1;

[0043] The reaction vessel 4 is fixedly installed in the middle of the device cavity 2;

[0044] Fixing plate 10, which is fixedly installed on the inner top wall of the device cavity 2;

[0045] Motor 8, which is fixedly installed on the upper surface of housing 1;

[0046] The fixed plate 10 has a sliding cavity 11 inside. The two sides of the sliding cavity 11 are symmetrically fixedly connected to a first elastic airbag 14 and a second elastic airbag 18. The fixed plate 10 has a third one-way valve 19 and a fourth one-way valve 20 symmetrically fixedly arranged inside one side wall. The third one-way valve 19 is connected to the outside, and the fourth one-way valve 20 is connected to the second conduit.

[0047] The reaction vessel 4 has a reaction chamber 5 inside. The bottom wall of the reaction chamber 5 is provided with a plurality of air inlets 22 that are connected to the second pipe 21 at equal intervals. The output shaft of the motor 8 is fixedly connected to a rotating rod 12. The rotating rod 12 passes through the shell 1 and the fixing plate 10 and extends into the interior of the sliding cavity 11. A cam 13 is fixedly installed on the rotating rod 12 inside the sliding cavity 11.

[0048] During operation, motor 8 starts rotating, driving rotating rod 12 to rotate. Rotating rod 12 drives cam 13 to rotate inside sliding cavity 11. When cam 13 rotates, it intermittently squeezes second elastic airbag 18. When cam 13 stops squeezing second elastic airbag 18, second elastic airbag 18 will extend under its own elastic force. This cycle continues. When second elastic airbag 18 is in one cycle, it will draw outside air into second elastic airbag 18 through third one-way valve 19, and then push the air into second pipe 21 through fourth one-way valve 20. Finally, it enters reaction chamber 5 through air outlet 22 to form bubbles. The bubbles carry suspended matter to the surface. Compared with the prior art, which continuously adds flocculant to combine with wastewater to form suspended matter until the suspended matter can settle, this invention shortens wastewater treatment time and reduces the amount of flocculant used by having the suspended matter float to the surface through the floating of bubbles.

[0049] As one embodiment of the present invention, such as Figure 2 As shown, the liquid inlet 3 is connected to the reaction vessel 4 through the liquid inlet pipe 9. The liquid inlet pipe 9 is equipped with a first grid 28, a second grid 36, and a third grid 37 at equal intervals. The first grid 28, the second grid 36, and the third grid 37 are all fixedly connected to a pull rod 38. One end of the pull rod 38 has a diameter larger than the diameter of the liquid inlet pipe 9. The width of the bars of the first grid 28 is 30 mm, the width of the bars of the second grid 36 is 20 mm, and the width of the bars of the third grid 37 is 15 mm.

[0050] During operation, wastewater enters the reaction tank 4 through inlet 3 and then through inlet pipe 9. Since the glass fiber wastewater contains large wastes and dirt before treatment, most of the larger pollutants are removed first by setting up first screen 28, second screen 36 and third screen 37 of different widths, which reduces the amount of flocculant used and avoids clogging of the device. Since the three different screens are inserted in inlet pipe 9, the operator can pull the lever 38 to remove the three screens from the inlet pipe for cleaning or replacement.

[0051] As one embodiment of the present invention, such as Figure 2 and Figure 4As shown, a first one-way valve 15 and a second one-way valve 16 are symmetrically arranged inside the other side wall of the fixed plate 10. The first one-way valve 15 is connected to a storage tank containing flocculant, and the second one-way valve 16 is connected to the reaction tank 4 through a first pipe 17. The flocculant is a polyacrylamide solution.

[0052] During operation, the motor 8 starts and drives the rotating rod 12 to rotate. As the rotating rod 12 rotates, the cam 13 rotates. When the cam 13 rotates, it intermittently squeezes the first elastic airbag 14. The first elastic airbag 14 will then cycle through expansion and compression. During this cycle, the first elastic airbag 14 will draw flocculant from the storage tank containing flocculant through the first one-way valve 15. Then, the flocculant will be sprayed into the reaction tank 4 through the second one-way valve 16 and the first pipe 17. The flocculant will combine with the waste in the wastewater to form suspended solids, which will then float to the surface along with the air bubbles.

[0053] As one embodiment of the present invention, such as Figure 2 and Figure 3 As shown, the rotating rod 12 passes through the reaction vessel 4 and extends into the reaction chamber 5. One end of the rotating rod 12 is fixedly installed with a stirring rod 24 inside the reaction chamber 5. A circular plate 26 is fixedly connected to the bottom wall of the reaction vessel 4. Multiple magnets 27 are embedded in the upper surface of the circular plate 26 at equal intervals around the circumference. The magnets 27 have opposite magnetic properties for each pair of adjacent magnets. An iron block 25 that cooperates with the magnets 27 is embedded inside the stirring rod 24.

[0054] During operation, as the rotating rod 12 rotates, the iron block 25 inside the stirring rod 24 also rotates with the stirring rod 24. The magnet 27 inside the circular plate 26 below the reaction vessel 4 will generate a magnetic field. When the stirring rod 24 rotates, the iron block 25 rotates in the magnetic field. Since the magnets 27 in the circular plate 26 have opposite magnetic properties, it is equivalent to placing the iron block 25 in a changing magnetic field. As a result, an induced current will be generated inside the iron block 25. Due to the heating effect of the metal current, the iron block 25 will heat up. While the stirring rod 24 is stirring, the reaction vessel 4 is heated, which further increases the speed of bubble rising and shortens the wastewater treatment time.

[0055] As one embodiment of the present invention, such as Figure 2 and Figure 5 As shown, the outer edge of the rotating rod 12 is threaded, and the rotating rod 12 is helically connected to the inside of the reaction chamber 5 with a nut 29. The nut 29 is rotatably connected to a bearing 30, and a filter plate 31 is fixedly installed on the outer edge of the bearing 30. The inner side wall of the reaction chamber 5 is provided with a sliding groove 32 that mates with the filter plate 31. Springs 33 are symmetrically fixedly connected to the inner bottom wall of the sliding groove 32, and one end of each of the two springs 33 is fixedly connected to the lower surface of the filter plate 31.

[0056] During operation, before the wastewater enters the reaction tank 4, the filter plate 31 is positioned at the top of the reaction chamber 5 under the elastic force of the spring 33. When the wastewater enters the reaction chamber 5, the wastewater will have an impact force on the filter plate 31. When the impact force is greater than the elastic force of the spring 33, the filter plate 31 will move downward, causing the nut 29 to rotate. Due to the function of the bearing 30, the rotation of the nut 29 will not affect the downward movement of the filter plate 31. When the filter plate 31 descends to the bottom of the slide 32, it will stop. At this time, the suspended matter combining flocculant and waste is blocked by the filter plate 31 and is located at the top of the filter plate 31. The treated wastewater will then pass through the filter plate 31. When the wastewater no longer enters the reaction chamber 5, the filter plate 31 will rise under the elastic force of the spring 33. During the rising process, the filter plate 31 will carry the suspended matter that has not yet floated with the bubbles upward, thus achieving the purpose of cleaning the reaction chamber.

[0057] As one embodiment of the present invention, such as Figure 2 As shown, a drain pipe 35 is fixedly installed on the inner bottom wall of the device cavity 2, a jet nozzle 23 is fixedly installed on the inner side wall of the reaction cavity 5, a drain port 34 that cooperates with the drain pipe 35 is opened on the side wall of the reaction tank 4, a water pump 6 is fixedly installed on the inner bottom wall of the device cavity 2, and the water pump 6 is connected to the reaction tank 4 through a drain pipe 7.

[0058] During operation, when suspended matter rises with the bubbles to the upper part of the reaction chamber 5, the jet nozzle 23 will spray airflow, pushing the suspended matter closer to the drain port 34. Then, the suspended matter is discharged through the drain port 34 and flows into the drain pipe 35, and finally discharged. The treated wastewater is also pumped out through the drain pipe 7 by the water pump 6, realizing simultaneous discharge and wastewater treatment, reducing the pressure of the reaction tank 4 and improving work efficiency.

[0059] Specific working methods:

[0060] During operation, motor 8 starts rotating, driving rotor 12 to rotate. Rotor 12 drives cam 13 to rotate inside slide cavity 11. As cam 13 rotates, it intermittently compresses the second elastic airbag 18. When cam 13 stops compressing the second elastic airbag 18, the second elastic airbag 18 extends under its own elastic force. This cycle repeats. When the second elastic airbag 18 completes one cycle, it draws in outside air through the third one-way valve 19, then forces the air through the fourth one-way valve 20 into the second pipe 21, and finally into the reaction chamber 5 through the air inlet 22 to form bubbles. These bubbles carry suspended solids to the surface. Compared to existing technologies, this method continuously adds flocculant to combine with wastewater to form suspended solids until the suspended solids can be... In this invention, suspended solids are lifted to the surface by rising air bubbles, shortening wastewater treatment time and reducing flocculant usage. Wastewater enters the reaction tank 4 through inlet 3 and then inlet pipe 9. Since the glass fiber wastewater contains large wastes and impurities before treatment, the use of first screens 28, second screens 36, and third screens 37 of different widths removes most of the larger pollutants, reducing flocculant usage and preventing clogging. Because the three screens are inserted into inlet pipe 9, operators can remove them by pulling rod 38 for cleaning or replacement, also preventing clogging. Motor 8 starts, driving rotating rod 12 to rotate. Rotating rod 12 rotates cam 13, which intermittently squeezes the first elastic airbag 14 during rotation. The first elastic airbag 14 then cycles through expansion and compression. During this cycle, flocculant is drawn from the storage tank containing flocculant through the first one-way valve 15 into the first elastic airbag 14. The flocculant is then sprayed into the reaction tank 4 through the second one-way valve 16 and the first pipe 17. The flocculant combines with waste in the wastewater to form suspended solids, which then rise with the air bubbles. As rotating rod 12 rotates, the iron block 25 inside the stirring rod 24 also rotates. Meanwhile, the magnet 27 inside the circular plate 26 below the reaction tank 4 creates a magnetic field. When the stirring rod 24 rotates, the iron block 25... Block 25 rotates in the magnetic field. Since the magnets 27 in the circular plate 26 have opposite magnetic properties for each adjacent pair, it is equivalent to placing the iron block 25 in a changing magnetic field. An induced current is generated inside the iron block 25. Due to the heating effect of the metal current, the iron block 25 heats up. Simultaneously with the stirring rod 24 stirring, the reaction tank 4 is heated, further increasing the speed of bubble rise and shortening the wastewater treatment time. Before the wastewater enters the reaction tank 4, the filter plate 31 is positioned at the top of the reaction chamber 5 under the elastic force of the spring 33. When the wastewater enters the reaction chamber 5, the wastewater impacts the filter plate 31. When the impact force exceeds the elastic force of the spring 33, the filter plate 31 moves downward, causing the nut 29 to rotate. Due to the function of the bearing 30...Rotating nut 29 does not affect the downward movement of filter plate 31. Filter plate 31 stops descending to the bottom of chute 32. At this point, suspended matter combining flocculant and waste is blocked by filter plate 31 and located at the top of filter plate 31. The treated wastewater then passes through filter plate 31. When the wastewater no longer enters reaction chamber 5, filter plate 31 rises under the force of spring 33. During this ascent, filter plate 31 carries away any suspended matter that has not yet floated with the bubbles, thus cleaning the reaction chamber. When the suspended matter rises with the bubbles to the top of reaction chamber 5, jet nozzle 23 sprays air, pushing the suspended matter towards drain port 34. The suspended matter is then discharged through drain port 34, flowing into drain pipe 35 and finally discharged. The treated wastewater is also pumped out through drain pipe 7 by pump 6, achieving simultaneous sewage discharge and wastewater treatment, reducing the pressure on reaction tank 4 and improving work efficiency.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass fiber wastewater treatment device, comprising a shell (1), wherein a device cavity (2) is provided inside the shell (1); and a liquid inlet (3), wherein the liquid inlet (3) is disposed on the upper surface of the shell (1); The reaction vessel (4) is fixedly installed in the middle of the device cavity (2); A fixing plate (10) is fixedly installed on the inner top wall of the device cavity (2); Motor (8), which is fixedly mounted on the upper surface of housing (1); Its features are: The fixed plate (10) has a sliding cavity (11) inside. The two sides of the sliding cavity (11) are symmetrically fixedly connected to a first elastic airbag (14) and a second elastic airbag (18). The fixed plate (10) has a third one-way valve (19) and a fourth one-way valve (20) symmetrically fixedly installed inside one side wall. The third one-way valve (19) is connected to the outside, and the fourth one-way valve (20) is connected to the second conduit (21). The reaction vessel (4) has a reaction chamber (5) inside. The bottom wall of the reaction chamber (5) is provided with a plurality of air inlets (22) that are connected to the second conduit (21) at equal intervals. The output shaft of the motor (8) is fixedly connected to a rotating rod (12). The rotating rod (12) passes through the shell (1) and the fixing plate (10) and extends into the interior of the sliding cavity (11). A cam (13) is fixedly installed on the rotating rod (12) inside the sliding cavity (11). The inlet (3) is connected to the reaction vessel (4) through the inlet pipe (9). The inlet pipe (9) is equipped with a first grid (28), a second grid (36) and a third grid (37) at equal intervals. The first grid (28), the second grid (36) and the third grid (37) are all fixedly connected to a pull rod (38). One end of the pull rod (38) has a diameter larger than the diameter of the inlet pipe (9). The width of the bars of the first grille (28) is 30mm; The width of the bars in the second grille (36) is 20 mm; The width of the bars of the third grille (37) is 15mm; The other side wall of the fixed plate (10) is symmetrically provided with a first one-way valve (15) and a second one-way valve (16). The first one-way valve (15) is connected to the storage tank containing flocculant, and the second one-way valve (16) is connected to the reaction tank (4) through the first pipe (17). The flocculant is a polyacrylamide solution; The rotating rod (12) passes through the reaction vessel (4) and extends into the reaction chamber (5). One end of the rotating rod (12) is fixedly installed with a stirring rod (24) inside the reaction chamber (5). A circular plate (26) is fixedly connected to the bottom wall of the reaction vessel (4). Multiple magnets (27) are embedded in the upper surface of the circular plate (26) at equal intervals around the circumference. The magnets (27) of each pair of adjacent magnets (27) have opposite magnetic properties. An iron block (25) that cooperates with the magnet (27) is embedded inside the stirring rod (24). The outer edge of the rotating rod (12) is threaded, and the rotating rod (12) is threaded to the inside of the reaction chamber (5) with a nut (29). The nut (29) is rotatably connected to a bearing (30), and a filter plate (31) is fixedly installed on the outer edge of the bearing (30). The inner wall of the reaction chamber (5) is provided with a sliding groove (32) that cooperates with the filter plate (31). Springs (33) are symmetrically fixedly connected to the inner bottom wall of the sliding groove (32). One end of each of the two springs (33) is fixedly connected to the lower surface of the filter plate (31). A drain pipe (35) is fixedly installed on the inner bottom wall of the device cavity (2), a jet nozzle (23) is fixedly installed on the inner side wall of the reaction cavity (5), and a drain port (34) that cooperates with the drain pipe (35) is opened on the side wall of the reaction tank (4). A water pump (6) is fixedly installed on the inner bottom wall of the device cavity (2), and the water pump (6) is connected to the reaction tank (4) through the drain pipe (7); When the rotating rod (12) rotates, the iron block (25) inside the stirring rod (24) also rotates with the stirring rod (24). The magnet (27) inside the circular plate (26) below the reaction tank (4) will form a magnetic field. When the stirring rod (24) rotates, the iron block (25) rotates in the magnetic field. Since the magnets (27) in the circular plate (26) have opposite magnetic properties for each adjacent pair, it is equivalent to placing the iron block (25) in a changing magnetic field. Thus, an induced current will be generated inside the iron block (25). Due to the heating effect of the metal current, the iron block (25) will heat up. While the stirring rod (24) is stirring, the reaction tank (4) is heated, which further increases the speed of bubble rising and shortens the wastewater treatment time. Before the wastewater enters the reaction tank (4), the filter plate (31) will be in the reaction chamber (5) under the elastic force of the spring (33). When wastewater enters the reaction chamber (5), the wastewater will impact the filter plate (31). When the impact force is greater than the elastic force of the spring (33), the filter plate (31) will move down and drive the nut (29) to rotate. Due to the effect of the bearing (30), the rotation of the nut (29) will not affect the downward movement of the filter plate (31). When the filter plate (31) descends to the bottom of the chute (32), it will stop. At this time, the suspended matter that combines flocculant and waste is blocked by the filter plate (31) and is located at the top of the filter plate (31). The treated wastewater will pass through the filter plate (31). When the wastewater no longer enters the reaction chamber (5), the filter plate (31) will rise under the elastic force of the spring (33). During the rising process, the filter plate (31) will carry the suspended matter that has not yet floated with the bubbles to rise with it, thus achieving the purpose of cleaning the reaction chamber.

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