Paper pulp molding production wastewater treatment equipment

Abstract

The invention discloses pulp molding production wastewater treatment equipment which comprises a treatment tank and a filter tank, the treatment tank is divided into a settling zone, an anaerobic zone, an aerobic zone and a purification zone through a first partition wall, a second partition wall and a third partition wall in sequence from left to right, and the filter tank is arranged in the settling zone and fixed to the top of the treatment tank. One side of the filter tank is fixedly connected with a collecting tank, the bottom of the filter tank is fixedly connected with a flocculant spraying pipe, an aeration bracket I is arranged in the settling zone, an aeration nozzle I is arranged at the top of the aeration bracket I, an air bag is fixedly connected to the bottom of the aeration bracket I, and the volume of the air bag is changed through an air tap to drive the aeration bracket I to vertically lift; an anode plate and a cathode plate are also arranged in the purification area. The invention relates to the technical field of wastewater treatment. According to the pulp molding production wastewater treatment equipment, physical filtration, chemical flocculation, biological treatment and electrochemical purification are combined, so that the treatment efficiency and the water quality stability can be effectively improved, and the operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a pulp molding production wastewater treatment device. Background Art

[0002] Wastewater generated during pulp molding production primarily originates from processes such as pulping, molding, dehydration, and hot pressing. Its composition is complex and challenging to treat. Major pollutants include suspended solids, organic matter, nutrients, and residual additives. Suspended solids come from lost fine fibers; organic matter comes from dissolved lignin, hemicellulose, and sugars from the fibers themselves; nutrients are primarily organic degradation products, such as nitrogen and phosphorus compounds, and some are derived from additives. Direct discharge of this wastewater would cause serious environmental pollution.

[0003] Currently, pulp molding wastewater treatment primarily relies on processes such as filtration-sedimentation-flotation. While these processes can remove pollutants to a certain extent, they suffer from low treatment efficiency, unstable water quality, high operating costs, and frequent maintenance requirements. Traditional treatment equipment is particularly difficult to achieve optimal treatment results for persistent organic matter and heavy metal ions in residual additives in wastewater. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the present invention provides a pulp molding production wastewater treatment equipment, which combines physical filtration, chemical flocculation, biological treatment and electrochemical purification to effectively improve treatment efficiency and water quality stability and reduce operating costs.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A pulp molding production wastewater treatment equipment, including a treatment tank and a filter tank, the treatment tank is divided into a sedimentation zone, an anaerobic zone, an aerobic zone and a purification zone from left to right by a first partition wall, a second partition wall and a third partition wall, the filter tank is arranged in the sedimentation zone and fixed on the top of the treatment tank, one side of the filter tank is fixedly connected to a collection tank connected to the bottom of one side of the filter tank, both sides of the inner wall of the filter tank are rotatably connected to a rotating ring, and the two rotating rings are fixedly connected There are spiral blades, which are driven by a rotating ring to discharge the intercepted impurities into the collection pool. A filter plate 1 is fixedly connected to the top of the spiral blade in the filter pool. A connecting pipe is connected between the top of the filter plate 1 and the collection pool on one side of the filter pool. Filter holes are provided on the surface of the filter pool and below the filter plate 1. A flocculant spray pipe is fixedly connected to the bottom of the filter pool. An aeration bracket 1 is provided in the sedimentation area. An aeration nozzle 1 is provided on the top of the aeration bracket 1. An air bag is fixedly connected to the bottom of the aeration bracket 1. One side of the air bag is connected to an air nozzle, and the volume of the air bag is changed by the air nozzle to drive the aeration bracket to rise and fall vertically. The bottom of the sedimentation area is symmetrically fixed with guide plates on both sides. One side of the treatment tank is provided with an extraction tank connected to the sedimentation area. The top of the extraction tank is provided with a sludge pump for extracting sediment in the sedimentation area. The top of the anaerobic zone is provided with a cover plate. The bottom two sides of the cover plate are fixedly connected with isolation plates. The bottom end of the isolation plate extends below the horizontal plane where the tops of the first partition wall and the second partition wall are located. The second partition wall is close to one side of the anaerobic zone. A first baffle is provided on the side, and a second baffle is provided on the surface of the isolation plate close to the second partition wall. A filter plate 2 is fixedly connected horizontally in the purification area, and activated carbon is laid on the top of the filter plate 2. An anode plate and a cathode plate are also provided in the purification area. One end of the anode plate and the cathode plate is electrically connected to a pulse power supply. The anode plate adopts a pure titanium plate with an iridium dioxide and ruthenium dioxide coating on the surface, and the cathode plate adopts a graphite electrode. A pull-out bracket is provided in the purification area and below the filter plate 2, and an ultraviolet lamp is provided in the pull-out bracket.

[0008] Preferably, a connecting frame is fixedly connected to the center of the rotating ring away from the collecting tank side, a reduction motor that drives the connecting frame to rotate is fixedly connected to one side of the filter tank, the filter plate is tilted, and a first valve body is provided on the surface of the connecting pipe.

[0009] Preferably, the pore size of one surface of the filter plate is larger than the pore size of the filter hole surface, the bottom of the filter tank is configured as an arc surface adapted to the spiral blade, and a second valve body is provided at the bottom of the collection tank.

[0010] Preferably, both sides of the inner wall of the sedimentation zone are fixedly connected with fixing seats, the surface of the fixing seats is vertically fixedly connected with guide rods, the surface of the guide rods is slidably connected with sliders, and both sides of the aeration bracket are fixedly connected to the sliders.

[0011] Preferably, a dragon shaft is rotatably connected in the sedimentation area and between the two guide plates, one end of the dragon shaft extends into the extraction pool, and a driving motor for driving the dragon shaft to rotate is fixedly connected to the surface of the treatment pool.

[0012] Preferably, the bottom of the aerobic zone is fixedly connected to aeration nozzle 2 via aeration bracket 2, a microbial bacterial house is fixedly connected to the top of aeration nozzle 2 in the aerobic zone, and an aeration fan connecting aeration nozzle 1 and aeration nozzle 2 is provided on one side of the treatment tank.

[0013] Preferably, one side of the pull-out bracket extends to the outside of the treatment pool and is sealed with the treatment pool, a drain pipe is connected to one side of the purification area and is located below the second filter plate, and a shielding plate is provided on the top of the purification area.

[0014] Preferably, the first baffle is tilted and the angle between it and the second partition wall is 30-60 degrees, and the second baffle is tilted and the angle between it and the isolation plate is 120-150 degrees.

[0015] Preferably, a flocculant storage box is provided on one side of the treatment tank, and a liquid pump connected to the flocculant spray pipe is provided in the flocculant storage box. An air pump is fixedly connected to one side of the treatment tank, and the air outlet end of the air pump is connected to the air nozzle through an electromagnetic valve. A control cabinet is also provided on one side of the treatment tank, and the pulse power supply is arranged in the control cabinet.

[0016] Preferably, the thickness of the iridium dioxide and ruthenium dioxide coating is 5-10 μm, and the area ratio of the iridium dioxide and ruthenium dioxide coating is 1:2.

[0017] (3) Beneficial effects

[0018] The present invention provides a pulp molding production wastewater treatment device, which has the following beneficial effects:

[0019] (1) The fiber impurities in the wastewater are intercepted by the filter plate 1 and the filter holes. The intercepted fiber impurities are pushed into the collection tank by the rotation of the spiral blades to avoid clogging of the filter holes and ensure the continuous operation of the equipment. The fiber impurities on the surface of the filter plate 1 can be directly salvaged and cleaned, or flow into the collection tank through the connecting pipe by opening the first valve body;

[0020] (2) The air bag is inflated to push the aeration bracket up along the guide rod, and the large bubble aeration of the aeration nozzle promotes the diffusion of the flocculant, improves the mixing effect of the flocculant and the wastewater, and promotes the aggregation of tiny suspended matter and colloidal particles in the wastewater into larger flocs, which is convenient for subsequent sedimentation. After sedimentation, the sediment is transported to the extraction tank through the rotation of the dragon shaft, which is convenient for cleaning the sediment;

[0021] (3) By setting up an anaerobic zone and utilizing the action of anaerobic bacteria, the organic matter in the wastewater is decomposed into inorganic substances such as methane and water, thereby improving the biodegradability of the wastewater. The first baffle and the second baffle are set up to block the anaerobic sludge from entering the aerobic zone. In the aerobic zone, the action of aerobic bacteria is utilized to further decompose the organic matter in the wastewater and convert it into inorganic substances such as carbon dioxide and water, so that the organic matter in the wastewater is removed more thoroughly.

[0022] (4) Through electrochemical and ultraviolet sterilization technology, the wastewater is deeply treated. Electrochemical treatment can oxidize and degrade organic matter in the wastewater and reduce heavy metal ions; ultraviolet sterilization can kill bacteria and viruses in the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a cross-sectional view of the overall structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the connection between the filter tank and the spiral blades of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the spiral blade of the present invention.

[0028] In the figure: 1-treatment tank, 2-filtration tank, 3-first partition wall, 4-second partition wall, 5-third partition wall, 6-sedimentation zone, 7-anaerobic zone, 8-aerobic zone, 9-purification zone, 10-shield, 11-collection tank, 12-rotating ring, 13-spiral blade, 14-filter plate 1, 15-connecting pipe, 16-filter hole, 17-flocculant spray pipe, 18-aeration bracket 1, 19-aeration nozzle 1, 20-air bag, 21-air nozzle, 22-guide plate, 23-extraction tank, 24-sludge pump, 25-cover plate, 26-isolation plate, 27- First baffle, 28-second baffle, 29-filter plate 2, 30-activated carbon, 31-anode plate, 32-cathode plate, 33-pull-out bracket, 34-ultraviolet lamp, 35-connecting frame, 36-reduction motor, 37-first valve body, 38-second valve body, 39-fixed seat, 40-guide rod, 41-slider, 42-dragon shaft, 43-drive motor, 44-aeration bracket 2, 45-aeration nozzle 2, 46-microorganism room, 47-aeration fan, 48-drain pipe, 49-flocculant storage box, 50-air pump, 51-control cabinet. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-5 The present invention provides a technical solution: a pulp molding production wastewater treatment device, comprising a treatment pool 1 and a filtration pool 2. The treatment pool 1 is divided into a sedimentation zone 6, an anaerobic zone 7, an aerobic zone 8 and a purification zone 9 from left to right by a first partition wall 3, a second partition wall 4 and a third partition wall 5.

[0031] The filter pool 2 is arranged in the sedimentation area 6 and fixed on the top of the treatment pool 1. One side of the filter pool 2 is fixedly connected to a collection pool 11 that is connected to the bottom of one side of the filter pool 2. The two sides of the inner wall of the filter pool 2 are rotatably connected with rotating rings 12. A spiral blade 13 is fixedly connected between the two rotating rings 12. The bottom of the filter pool 2 is set to an arc surface that is adapted to the spiral blade 13. The arc surface design improves the cleaning effect of the spiral blade 13; the center of the rotating ring 12 away from the side of the collection pool 11 is fixedly connected to a connecting frame 35, and one side of the filter pool 2 is fixedly connected to a drive connecting frame 3 5 is rotated by a reduction motor 36. A filter plate 14 is fixedly connected to the top of the spiral blade 13 in the filter tank 2. A connecting pipe 15 is connected between the top of the filter plate 14 and the collection tank 11 on one side of the filter tank 2. Filter holes 16 are provided on the surface of the filter tank 2 below the filter plate 14. The pore size of the filter plate 14 is larger than the pore size of the filter holes 16. Fiber impurities in the wastewater are intercepted by the filter plate 14 and the filter holes 16. The fiber impurities intercepted by the filter plate 14 can be directly salvaged and removed from the top of the filter tank 2.

[0032] The filter hole 16 further intercepts fiber impurities in the water. The spiral blade 13 is driven by the rotating ring 12 to discharge the intercepted impurities into the collection tank 11, avoiding the clogging of the filter hole 16 by the fiber impurities. In order to further improve the cleaning effect of the filter hole 16, a cleaning brush can also be set on one side of the spiral blade 13.

[0033] Filter plate 14 is tilted and faces one side of collection tank 11. A first valve 37 is provided on the surface of connecting pipe 15. After removing most of the fiber impurities from the surface of filter plate 14, opening first valve 37 allows the remaining fiber impurities to flow into collection tank 11, improving the cleaning effect. A second valve 38 is provided at the bottom of collection tank 11. Opening second valve 38 facilitates the removal of fiber impurities collected in collection tank 11.

[0034] The bottom of the filter tank 2 is fixedly connected with a flocculant spray pipe 17, and the surface of the flocculant spray pipe 17 is evenly distributed with spray holes. A flocculant storage box 49 is provided on one side of the treatment tank 1, and a sealing cover is provided on the top of the flocculant storage box 49 to facilitate the addition of flocculant. A liquid pump connected to the flocculant spray pipe 17 is provided in the flocculant storage box 49, and the flocculant in the flocculant storage box 49 is pumped into the flocculant spray pipe 17 by the liquid pump, and evenly sprayed into the sedimentation area 6; an aeration bracket 18 is provided in the sedimentation area 6, and an aeration nozzle 1 is provided on the top of the aeration bracket 18 9. An air bag 20 is fixedly connected to the bottom of the aeration bracket 18, and an air nozzle 21 is connected to one side of the air bag 20. The air nozzle 21 changes the volume of the air bag 20 to drive the aeration bracket 18 to rise and fall vertically, and generates large bubbles with a diameter of 2-5mm through the aeration nozzle 19, which promotes the diffusion of flocculant. At the same time, the vertical rise and fall of the aeration bracket 18 further improves the mixing efficiency. When the tiny suspended matter in the water condenses into larger flocs, the rise of the aeration bracket 18 avoids the generation of sediment on the top of the aeration nozzle 19, ensuring the subsequent normal aeration work.

[0035] Guide plates 22 are symmetrically fixedly connected to both sides of the bottom of the sedimentation area 6. An extraction tank 23 connected to the sedimentation area 6 is provided on one side of the treatment tank 1. One side of the guide plate 22 extends into the extraction tank 23. A dragon shaft 42 is rotatably connected in the sedimentation area 6 and between the two guide plates 22. One end of the dragon shaft 42 extends into the extraction tank 23. A driving motor 43 for driving the dragon shaft 42 to rotate is fixedly connected to the surface of the treatment tank 1. The dragon shaft 42 is used to facilitate the transportation of sediment to one side of the extraction tank 23. A sludge pump 24 for extracting sediment in the sedimentation area 6 is provided on the top of the extraction tank 23. The sediment is discharged by the sludge pump, avoiding manual cleaning.

[0036] A cover plate 25 is provided on the top of the anaerobic zone 7, and isolation plates 26 are fixedly connected to both sides of the bottom of the cover plate 25. The bottom end of the isolation plate 26 extends below the horizontal plane where the tops of the first partition wall 3 and the second partition wall 4 are located. The water sealing effect makes the area directly below the isolation plate 26 an anaerobic zone, preventing the entry of air. A first baffle 27 is provided on the side of the second partition wall 4 close to the anaerobic zone 7, and a second baffle 28 is provided on the surface of the isolation plate 26 close to the second partition wall 4. The first baffle 27 is tilted and the angle between it and the second partition wall 4 is 30-60°. The second baffle 28 is tilted and the angle between it and the isolation plate 26 is 120-150°. Through the setting of the second baffle 28, the solids in the solid-liquid mixture slide along the surface of the second baffle 28 to the bottom of the anaerobic zone 7. At the same time, the first baffle 27 prevents sludge from entering the aerobic zone 8 and avoids the loss of anaerobic pond bacteria.

[0037] A filter plate 29 is fixedly connected horizontally in the purification area 9, and activated carbon 30 is laid on the top of the filter plate 29. An anode plate 31 and a cathode plate 32 are also provided in the purification area 9. One end of the anode plate 31 and the cathode plate 32 are electrically connected to a pulse power supply. The frequency of the pulse power supply is 100 Hz and the duty cycle is 50%. Compared with a constant current power supply, it is more energy-efficient and reduces electrode passivation. The anode plate 31 adopts a pure titanium plate with iridium dioxide and ruthenium dioxide coatings on the surface, and the cathode plate 32 adopts a graphite electrode. The thickness of the iridium dioxide and ruthenium dioxide coatings is 5-10 μm, and the area ratio of the iridium dioxide and ruthenium dioxide coatings is 1:2. The anode plate 31 produces hydroxyl radicals to oxidatively degrade difficult-to-degrade organic matter such as lignin and phenols, and the cathode plate 32 plays a role in reducing heavy metals.

[0038] A pull-out bracket 33 is provided in the purification area 9 and below the filter plate 2 29 , and an ultraviolet lamp 34 is provided in the pull-out bracket 33 . One side of the pull-out bracket 33 extends to the outside of the treatment pool 1 and is sealed with the treatment pool 1 . The pull-out bracket 33 adopts a drawer-type structure, which facilitates the replacement of the ultraviolet lamp 34 .

[0039] Fixed seats 39 are fixedly connected to both sides of the inner wall of the sedimentation area 6, and a guide rod 40 is vertically fixedly connected to the surface of the fixed seat 39. A slider 41 is slidably connected to the surface of the guide rod 40. Both sides of the aeration bracket 18 are fixedly connected to the slider 41, which improves the stability of the lifting and lowering of the aeration bracket 18.

[0040] The bottom of the aerobic zone 8 is fixedly connected to an aeration nozzle 45 via an aeration bracket 44. A microbial cell 46 is fixedly connected to the top of the aeration nozzle 45 in the aerobic zone 8. The microbial cell 46 provides a living space for bacteria and promotes their growth and reproduction. The bacteria include: cellulose-decomposing bacteria, hemicellulose-decomposing bacteria and lignin-decomposing bacteria, which degrade organic matter in the water.

[0041] An aeration fan 47 connecting aeration nozzle 19 and aeration nozzle 2 45 is provided on one side of the treatment tank 1. A three-way joint is provided at the air outlet end of the aeration fan 47, and a corresponding solenoid valve is provided. Through the control of the solenoid valve, aeration nozzle 19 and aeration nozzle 2 45 can be controlled separately.

[0042] A drainage pipe 48 is connected to one side of the purification area 9 and is located below the second filter plate 29 , and a shielding plate 10 is provided on the top of the purification area 9 .

[0043] An air pump 50 is fixedly connected to one side of the treatment tank 1, and the air outlet end of the air pump 50 is connected to the air nozzle 21 through an electromagnetic valve. A control cabinet 51 is also provided on one side of the treatment tank 1, and a pulse power supply is provided in the control cabinet 51. The control cabinet 51 is also provided with a controller and an operation panel to control the liquid pump, air pump 50, aeration fan 47, ultraviolet lamp 34, sludge pump 24, reduction motor 36, drive motor 43, pulse power supply and various electromagnetic valves.

[0044] During operation, wastewater flows into the filter tank 2 from the top and is initially filtered by the filter plate 14. The fiber impurities filtered out by the filter plate 14 are salvaged from the top and filtered again by the filter holes. The filtered fiber impurities are pushed into the collection tank 11 by the spiral blades 13. The filtrate enters the sedimentation zone 6 from the filter holes 16. The flocculant is added through the flocculant spray pipe 17. The air bag 20 is moved up and down to drive the aeration bracket 18 to rise and fall, and the flocculant is mixed with the aeration nozzle. After precipitation, the clean water overflows into the anaerobic zone 7. The first baffle 27 and the second baffle 28 block the flow of sludge, and then flows into the aerobic zone 8. The organic matter is degraded by aeration, and then enters the purification zone 9 for electrochemical oxidation, activated carbon adsorption and ultraviolet disinfection in sequence. The treated wastewater is discharged from the drain pipe 48.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A pulp molding wastewater treatment device, comprising a treatment tank (1) and a filter tank (2), characterized in that: The treatment pool (1) is divided into a sedimentation zone (6), an anaerobic zone (7), an aerobic zone (8) and a purification zone (9) from left to right by a first partition wall (3), a second partition wall (4) and a third partition wall (5). The filter pool (2) is arranged in the sedimentation zone (6) and fixed on the top of the treatment pool (1). One side of the filter pool (2) is fixedly connected to a collection pool (11) which is in communication with the bottom of one side of the filter pool (2). Both sides of the inner wall of the filter pool (2) are rotatably connected to rotating rings (12). A spiral blade (13) is fixedly connected between the two rotating rings (12). The spiral blade (13) is driven by the rotating ring (12) to discharge the intercepted impurities into the collection pool (11). The filter pool (2 ) and is fixedly connected to a filter plate 1 (14) at the top of the spiral blade (13); a connecting pipe (15) is provided on one side of the filter pool (2) and is located between the top of the filter plate 1 (14) and the collecting pool (11); a filter hole (16) is provided on the surface of the filter pool (2) and is located below the filter plate 1 (14); a flocculant spray pipe (17) is fixedly connected to the bottom of the filter pool (2); an aeration bracket 1 (18) is provided in the sedimentation area (6); an aeration nozzle 1 (19) is provided on the top of the aeration bracket 1 (18); an air bag (20) is fixedly connected to the bottom of the aeration bracket 1 (18); a gas nozzle (21) is connected to one side of the gas bag (20); and the gas nozzle (21) is used to change the flocculant spray pipe (17) to improve the flocculant spray pipe (17). The volume of the variable air bag (20) drives the aeration bracket (18) to rise and fall vertically. The bottom of the sedimentation zone (6) is symmetrically fixedly connected with guide plates (22). One side of the treatment tank (1) is provided with an extraction tank (23) connected with the sedimentation zone (6). The top of the extraction tank (23) is provided with a sludge pump (24) for extracting sediment in the sedimentation zone (6). The top of the anaerobic zone (7) is provided with a cover plate (25). The bottom sides of the cover plate (25) are fixedly connected with isolation plates (26). The bottom end of the isolation plate (26) extends to below the horizontal plane where the tops of the first partition wall (3) and the second partition wall (4) are located. The second partition wall (4) is provided with a first baffle (27) on the side close to the anaerobic zone (7). A second baffle (28) is provided on the surface of the isolation plate (26) on one side of the second partition wall (4); a filter plate 2 (29) is horizontally fixedly connected in the purification zone (9); activated carbon (30) is laid on the top of the filter plate 2 (29); an anode plate (31) and a cathode plate (32) are also provided in the purification zone (9); one end of the anode plate (31) and the cathode plate (32) are electrically connected to a pulse power supply; the anode plate (31) is a pure titanium plate with an iridium dioxide and ruthenium dioxide coating on the surface; the cathode plate (32) is a graphite electrode; a pull-out bracket (33) is provided in the purification zone (9) and below the filter plate 2 (29); an ultraviolet lamp (34) is provided in the pull-out bracket (33).

2. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: A connecting frame (35) is fixedly connected to the center of the rotating ring (12) on the side away from the collecting tank (11), and a reduction motor (36) for driving the connecting frame (35) to rotate is fixedly connected to one side of the filter tank (2). The filter plate (14) is tilted, and a first valve body (37) is provided on the surface of the connecting pipe (15).

3. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: The pore size of the surface of the filter plate 1 (14) is larger than the pore size of the surface of the filter hole (16), the bottom of the filter pool (2) is configured as an arc surface adapted to the spiral blade (13), and the bottom of the collection pool (11) is provided with a second valve body (38).

4. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: The inner wall of the sedimentation zone (6) is fixedly connected to a fixing seat (39) on both sides, the surface of the fixing seat (39) is vertically fixedly connected to a guide rod (40), the surface of the guide rod (40) is slidably connected to a slider (41), and the two sides of the aeration bracket (18) are fixedly connected to the slider (41).

5. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: A dragon shaft (42) is rotatably connected in the sedimentation area (6) and between the two guide plates (22), one end of the dragon shaft (42) extends into the extraction tank (23), and a driving motor (43) for driving the dragon shaft (42) to rotate is fixedly connected to the surface of the treatment tank (1).

6. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: The bottom of the aerobic zone (8) is fixedly connected to the second aeration nozzle (45) via the second aeration bracket (44), and a microbial bacterial chamber (46) is fixedly connected to the top of the second aeration nozzle (45) in the aerobic zone (8). An aeration fan (47) connecting the first aeration nozzle (19) and the second aeration nozzle (45) is provided on one side of the treatment tank (1).

7. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: One side of the pull-out bracket (33) extends to the outside of the treatment tank (1) and is sealed with the treatment tank (1); a drainage pipe (48) is connected to one side of the purification zone (9) and is located below the second filter plate (29); and a shielding plate (10) is provided on the top of the purification zone (9).

8. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: The first baffle (27) is tilted and the angle between it and the second partition wall (4) is 30-60 degrees, and the second baffle (28) is tilted and the angle between it and the isolation plate (26) is 120-150 degrees.

9. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: A flocculant storage box (49) is provided on one side of the treatment tank (1), and a liquid pump connected to the flocculant spray pipe (17) is provided in the flocculant storage box (49). An air pump (50) is fixedly connected to one side of the treatment tank (1), and the air outlet end of the air pump (50) is connected to the air nozzle (21) through an electromagnetic valve. A control cabinet (51) is also provided on one side of the treatment tank (1), and the pulse power supply is provided in the control cabinet (51).

10. The pulp molding wastewater treatment equipment according to claim 1, characterized in that: The thickness of the iridium dioxide and ruthenium dioxide coating is 5-10 μm, and the area ratio of the iridium dioxide and ruthenium dioxide coating is 1:2.

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