Phosphating wastewater integrated treatment device

Abstract

The invention discloses an integrated phosphating wastewater treatment device, and belongs to the related technical field of wastewater treatment.The integrated phosphating wastewater treatment device comprises an adjusting pond, a reaction pond, a sedimentation pond and a water purifying pond, the reaction pond is fixedly installed on the outer surface of one end of the sedimentation pond, and the water purifying pond is fixedly installed on the outer surface of the other end of the sedimentation pond; the outer surface of one end of the reaction tank is fixedly provided with a regulating tank, the bottom of the sedimentation tank is provided with a slope bottom plate, the inner side of the sedimentation tank is provided with a trash remover used for being matched with the slope bottom plate, the trash remover comprises a transverse scraping strip and two vertical scraping strips, the transverse scraping strip is fixedly installed at the lower ends of the two vertical scraping strips, and the vertical scraping strips are fixedly installed at the lower ends of the two vertical scraping strips. A filter is fixedly mounted between the sedimentation tank and the water purification tank; the sedimentation tank is provided with an automatic attachment cleaning structure, the daily cleaning problem of the sedimentation tank can be solved, comprehensive cleaning operation on the side edge and the surface of the sedimentation tank can be automatically completed, surface attachments of the sedimentation tank are reduced, and the drainage quality of the sedimentation tank is improved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically an integrated treatment device for phosphating wastewater. Background Technology

[0002] The integrated phosphating wastewater treatment system is a highly efficient integrated treatment system designed for the pickling and phosphating mixed wastewater generated during the surface treatment of steel wire, bar, and finished products. This system employs a multi-stage synergistic process of "coagulation sedimentation + advanced oxidation + neutralization filtration" to first remove suspended particles, metal ions, and some phosphates from the wastewater. Then, it decomposes recalcitrant organic matter through catalytic oxidation. Finally, pH adjustment and deep filtration ensure stable water quality meeting standards. The entire system adopts a modular container design, featuring high automation, small footprint, and low operating costs. It effectively achieves integrated removal and reuse of pollutants in phosphating wastewater, meeting stringent environmental emission requirements.

[0003] Patent document CN215428847U describes a phosphating wastewater treatment device, including a ground and a fixed platform. A treatment tank and an aeration device are fixedly connected to the top of the ground. A motor is fixedly connected to the bottom of the fixed platform, and an acceleration gearbox is fixedly connected to the top of the fixed platform. The top of the motor's drive shaft passes through the fixed platform and is located inside the acceleration gearbox. A connecting shaft is provided inside the acceleration gearbox, and a spraying disc is fixedly connected to the top of the connecting shaft.

[0004] Existing phosphating wastewater treatment devices have certain shortcomings in use. When using such devices, the phosphating wastewater needs to be adjusted, reacted, and precipitated separately. After flocculation, the phosphating wastewater enters a sedimentation tank for sedimentation. After prolonged use, a layer of sediment will adhere to the surface of the sedimentation tank, requiring regular manual cleaning. Failure to clean it for a long time will affect the drainage quality of the sedimentation tank. The sedimentation tank itself does not have an automatic cleaning structure, which affects the effectiveness of the phosphating wastewater treatment device. Summary of the Invention

[0005] This invention provides an integrated treatment device for phosphating wastewater, which solves the problem that existing phosphating wastewater treatment devices require separate adjustment, reaction, and sedimentation treatments. After flocculation, the phosphating wastewater enters a sedimentation tank for sedimentation. However, after prolonged use, a layer of sediment adheres to the surface of the sedimentation tank, requiring regular manual cleaning. Failure to clean it regularly can negatively impact the drainage quality of the sedimentation tank. An integrated treatment device for phosphating wastewater includes an equalization tank, a reaction tank, a sedimentation tank, and a purification tank. The reaction tank is fixedly installed on the outer surface of one end of the sedimentation tank, and the purification tank is fixedly installed on the outer surface of the other end of the sedimentation tank. The equalization tank is fixedly installed on the outer surface of one end of the reaction tank. The bottom of the sedimentation tank is provided with a sloping bottom plate. The inner side of the sedimentation tank is provided with a cleaning device for use with the sloping bottom plate. The cleaning device includes a horizontal scraper and two vertical scrapers. The horizontal scraper is fixedly installed at the lower end of the two vertical scrapers. A filter is fixedly installed between the sedimentation tank and the purification tank.

[0006] As a further technical solution of the present invention, the outer surface of one side of the horizontal scraper and the two vertical scrapers are provided with V-shaped grooves. The upper ends of the two vertical scrapers are fixed by the connecting frame. During operation, the horizontal scraper and the two vertical scrapers can follow the inclined structure at the upper end of the inclined bottom plate to move obliquely downward. When the horizontal scraper and the two vertical scrapers move, the cleaning operation of the sediment on both sides of the sedimentation tank and the surface of the inclined bottom plate can be completed.

[0007] As a further technical solution of the present invention, the two sets of vertical scrapers and the sedimentation tank are movably connected by a movable frame, and the vertical scrapers and the movable frame are movably connected by a lifter. During operation, the movable frame can drive the vertical scrapers and the horizontal scrapers to move horizontally, while the lifter can make the vertical scrapers and the horizontal scrapers move up and down. The two are combined to make the vertical scrapers and the horizontal scrapers move diagonally downward.

[0008] As a further technical solution of the present invention, both ends of the mobile frame are provided with drivers, the surface of the sedimentation tank is provided with a sliding groove for use with the drivers, and both the drivers and the lifter are provided with drive wheels and motors. The motor drives the drive wheels, so that the vertical scraper moves up and down on the inner side of the mobile frame, and at the same time the mobile frame moves along the sliding groove of the sedimentation tank.

[0009] As a further technical solution of the present invention, a guide plate is provided between the vertical scraper and the horizontal scraper. The outer surface of one side of the guide plate is inclined. With the setting of the guide plate and the inclined structure of the side, a guide structure is formed between the horizontal scraper and the vertical scraper. When the vertical scraper scrapes and cleans the side wall of the sedimentation tank, the cleaned sediment moves down through the V-shaped groove of the vertical scraper. When the sediment moves to the corner position of the vertical scraper and the horizontal scraper, the guide plate guides the sediment into the V-shaped groove of the horizontal scraper. With the movement of the horizontal scraper, the sediment is pushed into the sewage discharge tank.

[0010] As a further technical solution of the present invention, the filter is fixedly installed with several sets of baffles, and the baffles form an S-shaped flow channel. By using the baffles to form an S-shaped flow channel inside the filter, when liquid enters the filter, the residence time of water in the filter is extended, thereby improving its filtration and purification effect.

[0011] As a further technical solution of the present invention, the filter is provided with filter media between two sets of partitions inside the filter. Several sets of filter media are connected and fixed together by connecting plates. By using the connecting plates, several sets of filter media can be pulled up at the same time, which facilitates the synchronous replacement of several sets of filter media.

[0012] As a further technical solution of the present invention, a delivery pump is provided between the equalization tank, the reaction tank, the sedimentation tank and the water purification tank. A sludge discharge trough is provided at the lower end of the inclined bottom plate inside the sedimentation tank. A screw pump is provided in the sludge discharge trough. The screw pump is used to discharge the sediment accumulated in the sludge discharge trough. With the delivery pump, the phosphating wastewater can be transported from the equalization tank to the reaction tank, the sedimentation tank and the water purification tank in sequence.

[0013] As a further technical solution of the present invention, the regulating tank is provided with a filter grid inside, and an inlet pipe is fixedly installed on the outer surface of one end of the regulating tank. The phosphating wastewater is transported to the inside of the regulating tank through the inlet pipe. After being filtered by the filter grid, most of the impurities in the phosphating wastewater are removed.

[0014] As a further technical solution of the present invention, a dosing tank is fixedly installed on one side of the outer surface of the reaction tank, and a stirrer is provided inside the reaction tank. The dosing tank is used to pump materials such as acid, alkali, oxidant, coagulant, flocculant and phosphorus removal agent into the reaction tank for acid-base neutralization and stepwise reaction of coagulant and flocculant.

[0015] The beneficial effects of this invention are as follows: By incorporating a cleaning device, this invention solves the daily cleaning problem of the sedimentation tank in the integrated phosphating wastewater treatment device. It automatically and periodically cleans the sides and surface of the sedimentation tank, reducing surface deposits and improving the drainage quality. During operation, both the drive unit and the lifting device are equipped with drive wheels and motors. The motor drives the drive wheels, causing the vertical scraper to move up and down inside the moving frame. Simultaneously, the moving frame moves along the chute of the sedimentation tank, causing the horizontal scraper and the two vertical scrapers to move bidirectionally. This allows the horizontal scraper and the two vertical scrapers to follow the inclined plane at the top of the inclined base plate. The structure moves diagonally downwards, allowing for the cleaning of sediment on both sides of the sedimentation tank and the surface of the sloping bottom plate. The guide plate, combined with the sloping side structure, creates a guide structure between the horizontal and vertical scrapers. When the vertical scrapers clean the side walls of the sedimentation tank, the sediment is moved downwards through the V-shaped grooves of the vertical scrapers. When the sediment reaches the corner between the vertical and horizontal scrapers, the guide plate guides it into the V-shaped grooves of the horizontal scrapers. The movement of the horizontal scrapers then pushes the sediment into the discharge trough, preventing it from overflowing and improving the cleaning effect. By installing filters, the integrated phosphating wastewater treatment device optimizes the use of sedimentation tanks and purification tanks, improving the filtration effect of water from sedimentation tanks to purification tanks. It increases the retention time of water during filtration over a short distance, while also making the cleaning and replacement of filter media more convenient. During operation, several sets of baffles form an S-shaped flow channel inside the filter. When liquid enters the filter, the phosphating wastewater comes into contact with the filter media, removing residual impurities. The S-shaped flow channel is horizontally arranged, extending the retention time of water within the filter and improving its filtration and purification effect. The connecting plate allows several sets of filter media to be moved upwards simultaneously, facilitating the synchronous replacement of multiple sets of filter media. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an overall structural diagram of the cleaning device in this invention; Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle; Figure 4 This is a diagram of the internal structure of the filter in this invention.

[0018] In the diagram: 1. Equalization tank; 2. Reaction tank; 3. Sedimentation tank; 4. Purified water tank; 5. Filter; 6. Strainer; 7. Sloping bottom plate; 8. Dosing tank; 9. Agitator; 10. Infusion pump; 11. Filter grid; 12. Vertical scraper; 13. Horizontal scraper; 14. Guide plate; 15. Moving frame; 16. Lifter; 17. Driver; 18. Filter media; 19. Baffle; 20. Connecting plate; 21. S-shaped flow channel. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0020] like Figures 1-4 As shown, an integrated treatment device for phosphating wastewater includes an equalization tank 1, a reaction tank 2, a sedimentation tank 3, and a purification tank 4. The reaction tank 2 is fixedly installed on the outer surface of one end of the sedimentation tank 3, and the purification tank 4 is fixedly installed on the outer surface of the other end of the sedimentation tank 3. The equalization tank 1 is fixedly installed on the outer surface of one end of the reaction tank 2. The bottom of the sedimentation tank 3 is provided with an inclined bottom plate 7. The inner side of the sedimentation tank 3 is provided with a cleaner 6 for use with the inclined bottom plate 7. The cleaner 6 includes a horizontal scraper 13 and two vertical scrapers 12. The horizontal scraper 13 is fixedly installed at the lower end of the two vertical scrapers 12. A filter 5 is fixedly installed between the sedimentation tank 3 and the purification tank 4.

[0021] The outer surface of one side of the horizontal scraper 13 and the two vertical scrapers 12 are provided with V-shaped grooves. The upper ends of the two vertical scrapers 12 are fixed by the movable frame 15. During operation, the horizontal scraper 13 and the two vertical scrapers 12 can follow the inclined structure at the upper end of the inclined bottom plate 7 to move downwards at an angle. When the horizontal scraper 13 and the two vertical scrapers 12 move, the cleaning operation of the sediment on both sides of the sedimentation tank 3 and the surface of the inclined bottom plate 7 can be completed.

[0022] Both sets of vertical scraper bars 12 and sedimentation tank 3 are movably connected by a movable frame 15, and the vertical scraper bars 12 and movable frame 15 are movably connected by a lifting device 16. During operation, the movable frame 15 can drive the vertical scraper bars 12 and the horizontal scraper bars 13 to move horizontally, while the lifting device 16 can make the vertical scraper bars 12 and the horizontal scraper bars 13 move up and down. The two work together to make the vertical scraper bars 12 and the horizontal scraper bars 13 move diagonally downward.

[0023] Both ends of the movable frame 15 are equipped with a driver 17. The surface of the sedimentation tank 3 is provided with a sliding groove for use with the driver 17. Both the driver 17 and the lifting device 16 are equipped with a drive wheel and a motor. The motor drives the drive wheel, so that the vertical scraper 12 moves up and down on the inner side of the movable frame 15, and at the same time, the movable frame 15 moves along the sliding groove of the sedimentation tank 3.

[0024] A guide plate 14 is provided between the vertical scraper 12 and the horizontal scraper 13. One outer surface of the guide plate 14 is inclined. With the setting of the guide plate 14 and the inclined structure on the side, a guide structure is formed between the horizontal scraper 13 and the vertical scraper 12. When the vertical scraper 12 scrapes and cleans the side wall of the sedimentation tank 3, the cleaned sediment moves down through the V-shaped groove of the vertical scraper 12. When the sediment moves to the corner position of the vertical scraper 12 and the horizontal scraper 13, the sediment is guided into the V-shaped groove of the horizontal scraper 13 by the setting of the guide plate 14. With the movement of the horizontal scraper 13, the sediment is pushed into the sewage discharge tank.

[0025] The filter 5 has several sets of baffles 19 fixedly installed inside, and the baffles 19 form an S-shaped flow channel 21 between them. By using the baffles 19 to form an S-shaped flow channel 21 inside the filter 5, when liquid enters the filter 5, the residence time of water in the filter 5 is extended, and its filtration and purification effect is improved.

[0026] Inside the filter 5, between two sets of partitions 19, there are filter media 18. Several sets of filter media 18 are connected and fixed together by connecting plates 20. With the setting of connecting plates 20, several sets of filter media 18 can be pulled up at the same time, which facilitates the synchronous replacement of several sets of filter media 18.

[0027] A delivery pump 10 is installed between the equalization tank 1, reaction tank 2, sedimentation tank 3 and water purification tank 4. A sludge discharge trough is provided inside the sedimentation tank 3 at the lower end of the inclined bottom plate 7. A screw pump is installed in the sludge discharge trough to discharge the sediment accumulated in the sludge discharge trough. With the delivery pump 10, phosphating wastewater can be transported from the equalization tank 1 to the reaction tank 2, sedimentation tank 3 and water purification tank 4 in sequence.

[0028] The equalization tank 1 is equipped with a filter grid 11 inside, and an inlet pipe is fixedly installed on the outer surface of one end of the equalization tank 1. The phosphating wastewater is transported to the inside of the equalization tank 1 through the inlet pipe. After being filtered by the filter grid 11, most of the impurities in the phosphating wastewater are removed.

[0029] A dosing tank 8 is fixedly installed on one side of the outer surface of the reaction tank 2. A stirrer 9 is installed inside the reaction tank 2. The dosing tank 8 is used to pump acid, alkali, oxidant, coagulant, flocculant and phosphorus removal agent and other materials into the reaction tank 2 for acid-base neutralization and stepwise reaction of coagulant and flocculant.

[0030] An integrated treatment device for phosphate wastewater, in use, includes drive wheels and motors in both the driver 17 and the lifting device 16. The motor drives the drive wheels, causing the vertical scraper 12 to move up and down inside the moving frame 15. Simultaneously, the moving frame 15 moves along the chute of the sedimentation tank 3, thereby causing the horizontal scraper 13 and the two vertical scrapers to move bidirectionally. This allows the horizontal scraper 13 and the two vertical scrapers 12 to follow the inclined structure at the upper end of the inclined bottom plate 7, moving diagonally downwards. This enables the cleaning of sediment on both sides of the sedimentation tank 3 and the surface of the inclined bottom plate 7. The guide plate 14, together with the inclined structure on the side, forms a guide structure between the horizontal scraper 13 and the vertical scraper 12. When the vertical scraper 12 scrapes and cleans the side wall of the sedimentation tank 3, the cleaned sediment moves down through the V-shaped groove of the vertical scraper 12. When the sediment moves to the corner of the vertical scraper 12 and the horizontal scraper 13, the guide plate 14 guides the sediment into the V-shaped groove of the horizontal scraper 13. The movement of the horizontal scraper 13 pushes the sediment into the sludge discharge tank, preventing the sediment from overflowing and improving the cleaning effect. An S-shaped flow channel 21 is formed inside the filter 5 by using several sets of baffles 19. When the liquid enters the filter 5, the phosphating wastewater comes into contact with the filter media 18. The filter media 18 removes the residual impurities in the phosphating wastewater. The S-shaped flow channel 21 is arranged horizontally, which prolongs the residence time of the water in the filter 5 and improves its filtration and purification effect. With the setting of the connecting plate 20, several sets of filter media 18 can be pulled up at the same time, which facilitates the synchronous replacement of several sets of filter media 18.

[0031] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An integrated treatment device for phosphating wastewater, characterized in that, The system includes an equalization tank (1), a reaction tank (2), a sedimentation tank (3), and a purification tank (4). The reaction tank (2) is fixedly installed on the outer surface of one end of the sedimentation tank (3), and the purification tank (4) is fixedly installed on the outer surface of the other end of the sedimentation tank (3). The equalization tank (1) is fixedly installed on the outer surface of one end of the reaction tank (2). The bottom of the sedimentation tank (3) is provided with a sloping bottom plate (7). The inner side of the sedimentation tank (3) is provided with a cleaning device (6) for use with the sloping bottom plate (7). The cleaning device (6) includes a horizontal scraper (13) and two vertical scrapers (12). The horizontal scraper (13) is fixedly installed at the lower end of the two vertical scrapers (12). A filter (5) is fixedly installed between the sedimentation tank (3) and the purification tank (4).

2. The integrated phosphating wastewater treatment device according to claim 1, characterized in that, The outer surface of one side of the horizontal scraper (13) and the two vertical scrapers (12) are provided with V-shaped grooves, and the upper ends of the two vertical scrapers (12) are fixed by the movable frame (15).

3. The integrated phosphating wastewater treatment device according to claim 2, characterized in that, The two sets of vertical scrapers (12) and the sedimentation tank (3) are connected by a movable frame (15), and the vertical scrapers (12) and the movable frame (15) are connected by a lifter (16).

4. The integrated phosphating wastewater treatment device according to claim 3, characterized in that, Both ends of the movable frame (15) are provided with a driver (17), and the surface of the sedimentation tank (3) is provided with a sliding groove for use with the driver (17).

5. The integrated phosphating wastewater treatment device according to claim 4, characterized in that, A guide plate (14) is provided between the vertical scraper (12) and the horizontal scraper (13), and one side of the outer surface of the guide plate (14) is inclined.

6. The integrated phosphating wastewater treatment device according to claim 1, characterized in that, The filter (5) has several sets of baffles (19) fixedly installed inside, and the baffles (19) form an S-shaped flow channel (21) between them.

7. The integrated phosphating wastewater treatment device according to claim 6, characterized in that, The filter (5) has filter media (18) located between two sets of partitions (19) inside, and several sets of filter media (18) are connected and fixed together by connecting plates (20).

8. The integrated phosphating wastewater treatment device according to claim 1, characterized in that, A liquid pump (10) is provided between the regulating tank (1), the reaction tank (2), the sedimentation tank (3) and the water purification tank (4). The sedimentation tank (3) is provided with a sludge discharge trough at the lower end of the inclined bottom plate (7).

9. The integrated phosphating wastewater treatment device according to claim 1, characterized in that, The regulating tank (1) is equipped with a filter grid (11) inside, and an inlet pipe is fixedly installed on the outer surface of one end of the regulating tank (1).

10. The integrated phosphating wastewater treatment device according to claim 1, characterized in that, A dosing tank (8) is fixedly installed on one side of the outer surface of the reaction tank (2), and a stirrer (9) is installed inside the reaction tank (2).

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