Environment-friendly sewage purification device for paper pulp papermaking

Abstract

The application discloses a paper pulp papermaking sewage environment-friendly purification device, and relates to the technical field of sewage environment-friendly purification devices.The device comprises a box body, a plurality of partitions are arranged in the box body to form a pretreatment pool, an anaerobic pool, an aerobic pool and a sedimentation pool, a V-shaped grid is arranged on the top of the pretreatment pool, baffle plates are symmetrically arranged on the V-shaped grid, an annular plate is slidably arranged on the top of the pretreatment pool, short connecting rods and long connecting rods are symmetrically arranged on the bottom surface of the annular plate, collecting assemblies and backwashing assemblies are arranged on the short connecting rods and the long connecting rods, a removal mechanism is arranged at the bottom of the long connecting rods, and a reciprocating mechanism is further arranged on the top of the pretreatment pool.The reciprocating mechanism and the removal mechanism are used to generate air bubbles in water, so that light suspended matters in papermaking sewage float to the water surface along the air bubbles, and the light suspended matters in the papermaking sewage are removed, thereby improving the working efficiency of papermaking sewage treatment.

Description

Technical Field

[0001] This invention relates to the field of wastewater environmental purification equipment, and in particular to a wastewater environmental purification equipment for pulp and paper making. Background Technology

[0002] As an important basic raw material industry of the national economy, the paper industry not only meets the needs of packaging, printing, culture and other fields, but also generates a large amount of high-concentration industrial wastewater. According to industry statistics, an average of 10 to 25 tons of wastewater are discharged for every ton of pulp produced. Large paper enterprises can discharge thousands to tens of thousands of tons of wastewater per day. Moreover, the wastewater is characterized by "continuous discharge and large fluctuations in water volume". The treatment of papermaking wastewater requires the use of wastewater environmental purification equipment.

[0003] However, existing wastewater purification devices have significant shortcomings in use. Due to the large amount of suspended fibers in papermaking wastewater, these suspended fibers easily clog subsequent filtration units such as screens, membrane modules, and biological tank packing, thereby reducing the efficiency of adsorption, filtration, and biochemical reaction, requiring frequent shutdowns for cleaning. At the same time, they cannot efficiently remove light suspended solids such as fine fibers with a specific gravity close to or less than that of water, resulting in unstable treatment effects, inability to adapt to complex water quality requirements, and affecting the overall quality of wastewater purification. Summary of the Invention

[0004] In order to solve the problems in the background art, the present invention proposes an environmentally friendly wastewater purification device for pulp and paper making.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An environmentally friendly wastewater purification device for pulp and paper making includes a housing and further includes:

[0007] A partition, and multiple partitions are arranged inside the tank to form a pretreatment tank, an anaerobic tank, an aerobic tank, and a sedimentation tank;

[0008] A water pump is installed inside the anaerobic tank, and the inlet of the anaerobic tank is connected to the pretreatment tank through an outlet pipe.

[0009] V-shaped grid, wherein the V-shaped grid is installed at the top of the pretreatment tank, and baffles are symmetrically provided on the V-shaped grid;

[0010] An annular plate is slidably disposed at the top of the pretreatment tank. Short connecting rods and long connecting rods are symmetrically arranged on the bottom surface of the annular plate. The short connecting rods and long connecting rods are provided with collection components for collecting fine fibers and backwashing components for cleaning the V-shaped grid.

[0011] The bottom of the long connecting rod is equipped with a removal mechanism for removing fine fibers;

[0012] The top of the pretreatment pool is also equipped with a reciprocating mechanism for driving the annular plate to move back and forth.

[0013] Preferably, the removal mechanism includes a strip-shaped hollow plate slidably disposed at the bottom of the long connecting rod, and the strip-shaped hollow plate is slidably disposed with the bottom surface of the pretreatment tank, and a plurality of air outlet holes are opened on the inner top surface of the strip-shaped hollow plate;

[0014] An air blower is provided on the top surface of the housing, and the air outlet of the air blower is provided with a corrugated pipe that communicates with the strip hollow plate.

[0015] Preferably, the top surface of the strip hollow plate is provided with a rectangular groove that cooperates with the long connecting rod and a compression spring disposed in the rectangular groove;

[0016] The hollow strip plate has an arc-shaped chamfer at one end;

[0017] The inner wall of the pretreatment tank, near the chamfered side, is uniformly provided with multiple arc-shaped plates that match the chamfer.

[0018] Preferably, the collection assembly includes a collection mesh frame mounted on one side of the short connecting rod and the long connecting rod by a fastener;

[0019] Short cylinders are fixed to both ends of the collection frame. An adjustment groove is provided on the inner wall of the pretreatment pool. A partition is provided in the adjustment groove, and the partition and the adjustment groove form an adjustment component that cooperates with the short cylinders.

[0020] A rectangular cavity is provided on the partition block, and a limiting member is provided inside the rectangular cavity.

[0021] Preferably, the regulating tank has an inclined chamfer on the side near the anaerobic tank.

[0022] Preferably, the fixing component includes a strip groove formed on the short connecting rod and the long connecting rod, a slider slidably disposed in the strip groove, and a screw disposed on the slider, wherein the screw passes through the collecting mesh frame and is threadedly connected to a buoyancy cylinder.

[0023] Preferably, the adjusting member includes an arc-shaped groove disposed at the inclined chamfered end, a return groove disposed at the end of the arc-shaped groove, and a return groove disposed at the end of the return groove, wherein the return groove is connected to the adjusting groove.

[0024] Preferably, the limiting member includes a stop block and a return spring that are slidably disposed in the rectangular cavity, and the end face of the stop block away from the adjusting member is an inclined surface.

[0025] Preferably, the backwashing assembly includes a V-shaped hollow plate disposed between the short connecting rod and the long connecting rod, and a high-pressure nozzle disposed on the top surface of the V-shaped hollow plate, wherein the V-shaped hollow plate is connected to the short connecting rod and the long connecting rod by a fixing rod;

[0026] The anaerobic tank is equipped with a water pump, and the outlet of the water pump is connected to the V-shaped hollow plate through a water guide pipe.

[0027] Preferably, the reciprocating mechanism includes a short shaft rotatably mounted on the top surface of the pretreatment tank, the short shaft having a drive motor at its top and a circular plate at its bottom, and a long cylinder at the bottom edge of the circular plate that cooperates with the annular plate.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. This invention utilizes a reciprocating mechanism and a removal mechanism to facilitate the generation of bubbles in the water, causing light suspended solids in papermaking wastewater to float to the surface with the bubbles, thereby facilitating the removal of light suspended solids from the papermaking wastewater and improving the efficiency of papermaking wastewater treatment. Furthermore, the coordinated use of the arc-shaped plate and the compression spring allows the hollow strip plate to move back and forth at the bottom of the pretreatment tank, enabling bubbles to cover the entire bottom of the pretreatment tank, facilitating comprehensive cleaning of the papermaking wastewater and further improving the efficiency of papermaking wastewater treatment.

[0030] 2. The present invention facilitates the collection of floating fine fibers by using a collection component, preventing the fine fibers in papermaking wastewater from clogging subsequent filtration units, thereby improving the purification of papermaking wastewater. The cooperation between the adjusting component and the short cylinder facilitates the separation of the collection frame from the papermaking wastewater during resetting, preventing light suspended solids in the papermaking wastewater from adhering to the back of the collection frame, thus facilitating the collection of light suspended solids in the papermaking wastewater and improving the purification efficiency of papermaking wastewater.

[0031] 3. This invention utilizes the coordinated use of a strip-shaped chute, a slider, a screw, and a buoyancy cylinder to facilitate the entry of the collection frame into papermaking wastewater at different water levels. This allows for the collection of light suspended solids in the wastewater at varying water levels, improving the practicality and versatility of the collection components. Simultaneously, the buoyancy cylinder supports the collection frame, ensuring that half of the frame is above and half is below the water surface, further facilitating the collection of floating light suspended solids in the wastewater. Finally, the coordinated use of the buoyancy cylinder and the screw facilitates the fixing of the collection frame, improving the efficiency of its installation. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure from a frontal view provided according to an embodiment of the present invention is shown;

[0033] Figure 2 A structural schematic diagram of a first-view cross-section from a frontal perspective, provided according to an embodiment of the present invention, is shown;

[0034] Figure 3 A structural schematic diagram of a second cross-sectional view from a positive angle, provided according to an embodiment of the present invention, is shown;

[0035] Figure 4 A first-view structural schematic diagram of a collection component provided according to an embodiment of the present invention is shown;

[0036] Figure 5 A schematic diagram of the collection component provided according to an embodiment of the present invention is shown from a second perspective.

[0037] Figure 6 A schematic diagram of the reciprocating mechanism provided according to an embodiment of the present invention is shown;

[0038] Figure 7 An exploded view of a collection component provided according to an embodiment of the present invention is shown;

[0039] Figure 8 A schematic diagram of the connection between the adjusting groove and the limiting member according to an embodiment of the present invention is shown;

[0040] Figure 9 A schematic diagram of the structure of the adjusting groove provided according to an embodiment of the present invention is shown.

[0041] Legend:

[0042] 1. Box body; 2. Drive motor; 3. Blower; 4. Corrugated pipe; 5. Strip hollow plate; 6. Baffle; 7. Pretreatment tank; 8. Arc plate; 9. Water pump; 10. Pump; 11. Water guide pipe; 12. Anaerobic tank; 13. Aerobic tank; 14. Sedimentation tank; 15. Annular plate; 16. V-shaped bar; 17. Baffle; 18. Collection mesh frame; 19. Short connecting rod; 20. Circular plate; 21. Adjustment trough; 22. Strip chute; 23. Buoyancy cylinder; 24. Long connecting rod; 25. Air outlet; 26. Short cylinder; 27. Arc-shaped chamfer; 28. Compression spring; 29. ​​High-pressure nozzle; 30. V-shaped hollow plate; 31. Fixing rod; 32. Long cylinder; 33. Slider; 34. Screw; 35. Spacer; 36. Adjusting component; 3601. Arc-shaped groove; 3602. Return groove; 3603. Return groove; 37. Reset spring; 38. Stop block; 39. Inclined chamfer. Detailed Implementation

[0043] 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.

[0044] Please see Figure 1 - Figure 9 The present invention provides a technical solution:

[0045] An environmentally friendly wastewater purification device for pulp and paper making includes a housing 1, with an inlet on one side of the housing 1 for injecting papermaking wastewater into the housing 1; it also includes:

[0046] Multiple partitions 6 are installed inside the box 1 to form a pretreatment tank 7, which is used to pretreat the wastewater to prevent impurities in the papermaking wastewater from clogging the filter unit and affecting the filtration of the papermaking wastewater. There are also anaerobic tank 12, aerobic tank 13 and sedimentation tank 14, which are interconnected to facilitate the purification of wastewater.

[0047] The pump 10 is installed in the anaerobic tank 12. The inlet of the anaerobic tank 12 is connected to the pretreatment tank 7 through the outlet pipe. It is used to pump the treated papermaking wastewater in the pretreatment tank 7 into the anaerobic tank 12, which is beneficial to the purification of papermaking wastewater.

[0048] V-shaped screen 16 is installed at the top of the pretreatment tank 7. Baffles 17 are symmetrically arranged on the V-shaped screen 16. The use of V-shaped screen 16 facilitates the filtering out of solid pollutants generated during the papermaking process, such as shredded paper, wood chips, and pulp fiber clumps, from the papermaking wastewater. This prevents solid pollutants from clogging subsequent filtration units (such as screens, membrane modules, and biochemical tank packing), thus promoting the purification of papermaking wastewater. The use of baffles 17 facilitates the blocking of solid pollutants, preventing them from detaching from the V-shaped screen 16, thus promoting the collection of the V-shaped screen 16.

[0049] The annular plate 15 is slidably mounted on the top of the pretreatment tank 7. Short connecting rods 19 and long connecting rods 24 are symmetrically arranged on the bottom surface of the annular plate 15. The short connecting rods 19 and long connecting rods 24 are equipped with collection components for collecting fine fibers and backwashing components for cleaning the V-shaped grid 16. The use of the collection components facilitates the collection of floating fine fibers, preventing the fine fibers in the papermaking wastewater from clogging the subsequent filtration units, thereby facilitating the purification of papermaking wastewater. The use of the backwashing components facilitates the backwashing of the V-shaped grid 16, preventing impurities from clogging the mesh of the V-shaped grid 16 and improving the efficiency of wastewater filtration.

[0050] The bottom of the long connecting rod 24 is equipped with a removal mechanism for removing fine fibers. The use of the removal mechanism facilitates the generation of bubbles in the water, causing light suspended solids in the papermaking wastewater to float to the surface with the bubbles, thereby facilitating the removal of light suspended solids in the papermaking wastewater and improving the efficiency of papermaking wastewater treatment.

[0051] The top of the pretreatment tank 7 is also equipped with a reciprocating mechanism for driving the annular plate 15 to move back and forth. The use of the reciprocating mechanism makes it easy for the removal mechanism to move back and forth in the pretreatment tank 7, thereby facilitating the removal of light suspended solids in papermaking wastewater.

[0052] In this invention, the removal mechanism includes a strip-shaped hollow plate 5 slidably disposed at the bottom of the long connecting rod 24, and the strip-shaped hollow plate 5 is slidably disposed with the bottom surface of the pretreatment tank 7. Multiple air outlets 25 are opened on the top surface of the strip-shaped hollow plate 5, which generate bubbles at the bottom of the pretreatment tank 7 to treat the light suspended solids at the bottom of the papermaking wastewater.

[0053] An air blower 3 is provided on the top surface of the box 1. The air outlet of the air blower 3 is provided with a corrugated pipe 4 that is connected to the strip hollow plate 5. The use of the air blower 3 and the corrugated pipe 4 facilitates the generation of bubbles in the pretreatment tank 7, which facilitates the removal of light suspended solids in the papermaking wastewater, and is beneficial to the treatment of papermaking wastewater, thereby improving the efficiency of papermaking wastewater treatment.

[0054] In this invention, a rectangular groove that cooperates with the long connecting rod 24 and a compression spring 28 are provided on the top surface of the strip hollow plate 5. One end of the compression spring 28 is fixedly connected to the long connecting rod 24 and the other end is fixedly connected to the rectangular groove, which is used to reset the strip hollow plate 5.

[0055] One end of the strip hollow plate 5 has an arc-shaped chamfer 27 to facilitate the strip hollow plate 5 passing through the arc plate 8;

[0056] Multiple arc-shaped plates 8 that cooperate with the arc-shaped chamfer 27 are evenly arranged on the inner wall of the pretreatment tank 7. Through the cooperation of the arc-shaped plates 8 and the compression spring 28, the strip hollow plate 5 can move back and forth at the bottom of the pretreatment tank 7, so that the air bubbles cover the bottom of the entire pretreatment tank 7, which facilitates the comprehensive cleaning of papermaking wastewater and improves the working efficiency of papermaking wastewater treatment.

[0057] In this invention, the collection assembly includes a collection net frame 18 mounted on one side of the short connecting rod 19 and the long connecting rod 24 by means of a fastener; wherein, the use of the fastener facilitates the fixing of the collection net frame 18 and also facilitates the disassembly of the collection net frame 18; the use of the collection net frame 18 facilitates the collection of floating light suspended matter.

[0058] Short cylinders 26 are fixed to both ends of the collection frame 18. An adjustment groove 21 is provided on the inner wall of the pretreatment tank 7. A partition 35 is provided in the adjustment groove 21, and an adjustment component 36 is formed between the partition 35 and the adjustment groove 21 to cooperate with the short cylinders 26. Through the cooperation of the adjustment component 36 and the short cylinders 26, the collection frame 18 can be separated from the papermaking wastewater when it is reset, so as to avoid the light suspended solids in the papermaking wastewater from adhering to the back of the collection frame 18, thereby facilitating the collection of light suspended solids in the papermaking wastewater and improving the purification efficiency of the papermaking wastewater.

[0059] A rectangular cavity is provided on the partition 35, and a limiting member is provided inside the rectangular cavity. The use of the limiting member makes it easy to limit the short cylinder, ensuring that the short cylinder 26 can enter the arc groove 3601, thereby facilitating the reset of the collection frame 18 and further facilitating the collection of light suspended solids in papermaking wastewater.

[0060] In this invention, an inclined chamfer 39 is provided on the side of the regulating trough 21 near the anaerobic tank 12. By using the inclined chamfer 39, when the collecting frame 18 is moved to the side near the anaerobic tank 12, the collecting frame 18 will be lifted and the short cylinder 26 will enter the arc-shaped trough 3601, thereby detaching the collecting frame 18 from the papermaking wastewater.

[0061] In this invention, the fixing component includes a strip groove 22 formed on the short connecting rod 19 and the long connecting rod 24, a slider 33 slidably disposed in the strip groove 22, and a screw 34 disposed on the slider 33. The screw 34 passes through the collection frame 18 and is threadedly connected to a buoyancy cylinder 23. Through the cooperative use of the strip groove 22, the slider 33, the screw 34 and the buoyancy cylinder 23, it is easy to allow the collection frame 18 to enter papermaking wastewater at different water levels, thereby facilitating the collection of light suspended solids in papermaking wastewater at different water levels, improving the practicality and versatility of the collection component. At the same time, the buoyancy cylinder 23 can also support the collection frame 18, so that half of the collection frame 18 is above the water surface and half is below the water surface, thereby facilitating the collection of light suspended solids floating in the papermaking wastewater. Finally, the cooperative use of the buoyancy cylinder 23 and the screw 34 facilitates the fixing of the collection frame 18, improving the installation efficiency of the collection frame 18.

[0062] In this invention, the adjusting member 36 includes an arc-shaped groove 3601 disposed at the end of the inclined chamfer 39, a return groove 3602 disposed at the end of the arc-shaped groove 3601, and a return groove 3603 disposed at the end of the return groove 3602, and the return groove 3603 is connected to the adjusting groove 21; wherein, when the short cylinder 26 slides in the return groove 3602, the collecting frame 18 is located above the surface of the papermaking wastewater, which avoids the collecting frame 18 from contacting the papermaking wastewater when it is reset, so that light suspended matter adheres to the back of the collecting frame 18, thereby facilitating the collection of light suspended matter.

[0063] In this invention, the limiting member includes a stop block 38 and a return spring 37 slidably disposed in a rectangular cavity. One end of the return spring 37 is fixedly connected to the stop block 38, and the other end is fixedly connected to the inside of the rectangular cavity, which is used to squeeze the stop block 38. The end face of the stop block 38 away from the adjusting member 36 is an inclined surface, which makes it easy for the short cylinder 26 to pass through the stop block 38, thereby facilitating the limiting of the stop block 38.

[0064] In this invention, the backwashing assembly includes a V-shaped hollow plate 30 disposed between a short connecting rod 19 and a long connecting rod 24 and a high-pressure nozzle 29 disposed on the top surface of the V-shaped hollow plate 30, and the V-shaped hollow plate 30 is connected to the short connecting rod 19 and the long connecting rod 24 by a fixing rod 31.

[0065] The anaerobic tank 12 is equipped with a water pump 9. The outlet of the water pump 9 is connected to the V-shaped hollow plate 30 through a water guide pipe 11. The water pump 9 pumps the water in the anaerobic tank 12 into the V-shaped hollow plate 30, and finally sprays it onto the bottom surface of the V-shaped grid 16 through a high-pressure nozzle 29 to achieve backwashing of the V-shaped grid 16.

[0066] In this invention, the reciprocating mechanism includes a short shaft rotatably mounted on the top surface of the pretreatment tank 7. The top of the short shaft is provided with a drive motor 2 and the bottom is provided with a circular plate 20. The bottom edge of the circular plate 20 is provided with a long cylinder 32 that cooperates with the annular plate 15. The drive motor 2 is mounted on the top surface of the housing 1 to provide power.

[0067] Working principle: Papermaking wastewater is injected into the pretreatment tank 7 through the inlet of the tank 1 and falls onto the V-shaped grid 16. Impurities in the papermaking wastewater can be filtered out through the V-shaped grid 16.

[0068] Because the buoyancy cylinder 23 is fixed on the collection frame 18, the buoyancy cylinder 23 will carry the collection frame 18 to float on the surface of the papermaking wastewater, so that half of the collection frame 18 is on the surface of the papermaking wastewater and the other half is below the surface of the papermaking wastewater, which is used to collect light suspended solids in the papermaking wastewater.

[0069] Then, the blower 3 and drive motor 2 are turned on. Gas is produced by the blower 3 and transported to the strip hollow plate 5 through the corrugated pipe 4. Then the gas flows into the papermaking wastewater from the gas outlet 25. When the gas enters the papermaking wastewater, it will generate bubbles. Light suspended matter will float to the water surface with the bubbles.

[0070] The output shaft of the drive motor 2 rotates, which drives the short shaft to rotate, which in turn drives the circular plate 20 to rotate, which in turn drives the long cylinder 32 to rotate, thereby driving the annular plate 15 to move horizontally. The movement of the annular plate 15 will drive the short connecting rod 19 and the long connecting rod 24 to move, thereby driving the strip hollow plate 5 and the collection frame 18 to move back and forth.

[0071] When the strip-shaped hollow plate 5 moves, it passes through each arc-shaped plate 8. Then, under the action of the compression spring 28, the strip-shaped hollow plate 5 moves back and forth on the bottom surface of the pretreatment tank 7, which facilitates the filling of air bubbles into the entire papermaking wastewater and removes light suspended solids from the papermaking wastewater. When the long cylinder 32 rotates 180° from 0°, the strip-shaped hollow plate 5 moves from one side of the bottom surface of the pretreatment tank 7 to the other side. When the long cylinder 32 rotates 360° from 180°, the strip-shaped hollow plate 5 moves back and forth and resets. Therefore, the reciprocating movement of the strip-shaped hollow plate 5 in the pretreatment tank 7 is achieved by the rotation of the circular plate 20.

[0072] By moving the collection frame 18, floating light suspended matter is collected. As the collection frame 18 moves from one side to the other, when the short cylinder 26 rotates from 0° to 180°, it contacts the inclined chamfer 39. Then, the short cylinder 26 passes through the stop block 38 and enters the arc-shaped groove 3601, causing the collection frame 18 to be lifted. When the long cylinder 32 rotates from 180° to 360°, the short cylinder 26 first enters the return groove 3602, and then enters the regulating groove 21 through the return groove 3603. At this time, the collection frame 18 resets and continues to fall into the papermaking wastewater, and then the above operation is repeated.

[0073] During the treatment of fine fibers, water pump 9 is turned on to pump water from the anaerobic tank 12 into the V-shaped hollow plate 30. Finally, the water is sprayed onto the bottom surface of the V-shaped grid 16 through the high-pressure nozzle 29. When the circular plate 20 rotates, it causes the V-shaped hollow plate 30 to move back and forth, which facilitates backwashing of the V-shaped grid 16 and prevents the mesh of the V-shaped grid 16 from being blocked by impurities, thus facilitating the purification of papermaking wastewater.

[0074] After the papermaking wastewater is treated, the pump 10 is turned on to pump the papermaking wastewater in the pretreatment tank 7 into the anaerobic tank 12, and then the papermaking wastewater undergoes further purification treatment.

[0075] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater purification device for pulp and paper making, comprising a housing, characterized in that, Also includes: A partition, and multiple partitions are arranged inside the tank to form a pretreatment tank, an anaerobic tank, an aerobic tank, and a sedimentation tank; A water pump is installed inside the anaerobic tank, and the inlet of the anaerobic tank is connected to the pretreatment tank through an outlet pipe. V-shaped grid, wherein the V-shaped grid is installed at the top of the pretreatment tank, and baffles are symmetrically provided on the V-shaped grid; An annular plate is slidably disposed at the top of the pretreatment tank. Short connecting rods and long connecting rods are symmetrically arranged on the bottom surface of the annular plate. The short connecting rods and long connecting rods are provided with collection components for collecting fine fibers and backwashing components for cleaning the V-shaped grid. The bottom of the long connecting rod is equipped with a removal mechanism for removing fine fibers; The top of the pretreatment tank is also equipped with a reciprocating mechanism for driving the annular plate to move back and forth. The removal mechanism includes a strip-shaped hollow plate slidably disposed at the bottom of a long connecting rod, and the strip-shaped hollow plate is slidably disposed with the bottom surface of the pretreatment tank. The top surface of the strip hollow plate is provided with a rectangular groove that cooperates with the long connecting rod and a compression spring disposed in the rectangular groove; The hollow strip plate has an arc-shaped chamfer at one end; The inner wall of the pretreatment tank near the chamfer is uniformly provided with multiple arc-shaped plates that match the chamfer. The collection assembly includes a collection mesh frame installed on one side of the short connecting rod and the long connecting rod by fasteners; Short cylinders are fixed to both ends of the collection frame. An adjustment groove is provided on the inner wall of the pretreatment pool. A partition is provided in the adjustment groove, and the partition and the adjustment groove form an adjustment component that cooperates with the short cylinders. A rectangular cavity is provided on the partition block, and a limiting member is provided inside the rectangular cavity; The regulating trough has an inclined chamfer on the side near the anaerobic tank. The fixing component includes a strip groove formed on the short connecting rod and the long connecting rod, a slider slidably disposed in the strip groove, and a screw disposed on the slider, wherein the screw passes through the collecting mesh frame and is threadedly connected to a buoyancy cylinder; The adjusting component includes an arc-shaped groove at the end of the inclined chamfer, a return groove at the end of the arc-shaped groove, and a return groove at the end of the return groove, wherein the return groove is connected to the adjusting groove. The limiting component includes a stop block and a reset spring that are slidably disposed in the rectangular cavity, and the end face of the stop block away from the adjusting component is an inclined surface.

2. The wastewater purification device for pulp and paper making according to claim 1, characterized in that, Multiple air vents are provided on the inner top surface of the strip hollow plate; An air blower is provided on the top surface of the housing, and the air outlet of the air blower is provided with a corrugated pipe that communicates with the strip hollow plate.

3. The wastewater purification device for pulp and paper making according to claim 1, characterized in that, The backwashing assembly includes a V-shaped hollow plate disposed between a short connecting rod and a long connecting rod, and a high-pressure nozzle disposed on the top surface of the V-shaped hollow plate, wherein the V-shaped hollow plate is connected to the short connecting rod and the long connecting rod by a fixing rod. The anaerobic tank is equipped with a water pump, and the outlet of the water pump is connected to the V-shaped hollow plate through a water guide pipe.

4. The wastewater purification device for pulp and paper making according to claim 1, characterized in that, The reciprocating mechanism includes a short shaft rotatably mounted on the top surface of the pretreatment tank. The short shaft has a drive motor at its top and a circular plate at its bottom. The bottom edge of the circular plate has a long cylinder that cooperates with the annular plate.

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