Surface treatment sewage treatment device for new energy automobile production

Abstract

The utility model discloses a surface treatment sewage treatment device for new energy automobile production, and relates to the technical field of sewage treatment devices, the surface treatment sewage treatment device comprises a main box body, a comprehensive cleaning sewage collection pool is arranged on the left side in the main box body, and a pretreatment assembly capable of performing classified treatment is arranged on the left side of the top of the main box body. According to the surface treatment sewage treatment device for new energy automobile production, by arranging sulfuric acid dosing stirring tanks, a first coagulating sedimentation tank, an air flotation machine and a second coagulating sedimentation tank, when the surface treatment sewage treatment device is used, sewage enters the two corresponding groups of sulfuric acid dosing stirring tanks for dosing and mixing; the mixed sewage is pumped out and sent to the corresponding first coagulating sedimentation tank for dosing and mixing, then air floatation is carried out through the air floatation machine, the two kinds of pretreated wastewater finally enter the second coagulating sedimentation tank in a unified mode for dosing and sedimentation again, and the function of classified and quality-divided treatment is achieved. The problem that the device does not have a classification and quality-based processing function is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment devices, specifically a wastewater treatment device for surface treatment in the production of new energy vehicles. Background Technology

[0002] In the production of new energy vehicles, particularly in the surface treatment of the body, chassis, doors, shell, and related metal structural components, the process differs from that of traditional engine-driven vehicles. Traditional OEMs use a phosphating process with phosphating solution, while new energy OEMs have upgraded to an environmentally friendly silane process using silane agents. Traditional OEMs use oil-based paints in their metal painting process, which generates not only paint wastewater but also, more seriously, paint fumes, causing significant environmental damage. New energy OEMs, on the other hand, have upgraded to a more scientific and rational electrophoretic coating process using low-pollution water-based paints, resulting in lower emissions. However, like the phosphating process, the wastewater produced by these processes differs significantly in quality.

[0003] Two types of wastewater with different compositions cannot be treated using the same existing wastewater treatment methods. Furthermore, wastewater from different sources requires separate pretreatment to improve the efficiency of subsequent integrated treatment.

[0004] Now, a novel wastewater treatment device for surface treatment in new energy vehicle production is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a surface treatment wastewater treatment device for new energy vehicle production, so as to solve the problem mentioned in the background art of not having the function of classifying and treating wastewater separately.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface treatment wastewater treatment device for new energy vehicle production, comprising a main body, a comprehensive cleaning wastewater collection tank arranged on the left side of the main body, two sets of oil separators arranged on the left side of the comprehensive cleaning wastewater collection tank, a phosphating cleaning wastewater collection tank arranged on the right side of the comprehensive cleaning wastewater collection tank, a comprehensive regulating tank arranged on the right side of the phosphating cleaning wastewater collection tank, a hydrolysis acidification tank arranged on the right side of the comprehensive regulating tank, an aerobic aeration tank arranged on the right side of the hydrolysis acidification tank, an MBR membrane treatment tank arranged on the right side of the aerobic aeration tank, a clear water tank arranged on the right side of the main body, a secondary sedimentation tank arranged between the MBR membrane treatment tank and the clear water tank, and a pretreatment component capable of classified treatment arranged on the left side of the top of the main body.

[0007] The pretreatment component includes two sets of first coagulation sedimentation tanks, which are fixedly connected to the top left side of the main body. Two sets of sulfuric acid dosing and stirring tanks are respectively installed on the left side of each set of first coagulation sedimentation tanks. A coagulant dosing tank is welded to the left side of each first coagulation sedimentation tank. A wastewater inlet is located at the top front end of the coagulant dosing tank. Three stirring motors are installed at the top of the coagulant dosing tank. Inclined tube sedimentation packing is horizontally fixedly connected between the two sides inside the first coagulation sedimentation tank. An outlet is located at the top right side of the first coagulation sedimentation tank. A sludge discharge outlet is fixedly connected to the bottom front end of the first coagulation sedimentation tank. An air flotation machine is located on the right side of the first coagulation sedimentation tank, and a second coagulation sedimentation tank is located at the front end of the air flotation machine.

[0008] As a further technical solution of this utility model, the first coagulation sedimentation tank and the second coagulation sedimentation tank have the same internal structure, and the first coagulation sedimentation tank and the coagulant dosing tank are internally connected.

[0009] As a further technical solution of this utility model, the first coagulation sedimentation tank and the air flotation machine are internally connected, and the top of the phosphating cleaning wastewater collection tank, the comprehensive cleaning wastewater collection tank and the oil separator are flush with the ground.

[0010] As a further technical solution of this utility model, the phosphating cleaning wastewater collection tank, the comprehensive cleaning wastewater collection tank, and the oil separator are internally connected, and the second coagulation sedimentation tank and the comprehensive regulating tank are internally connected.

[0011] As a further technical solution of this utility model, the top of the integrated regulating tank is higher than the top of the phosphating cleaning wastewater collection tank, and the tops of the integrated regulating tank, hydrolysis acidification tank, aerobic aeration tank, MBR membrane treatment tank, secondary sedimentation tank, and clear water tank are flush.

[0012] As a further technical solution of this utility model, the aerobic aeration tank and the MBR membrane treatment tank are of the same size and specifications, and the integrated conditioning tank, hydrolysis acidification tank, aerobic aeration tank, MBR membrane treatment tank, secondary sedimentation tank and clear water tank are connected by pipelines.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the surface treatment wastewater treatment device for new energy vehicle production realizes the function of targeted classification and quality-based treatment;

[0014] The system is equipped with a sulfuric acid dosing and mixing tank, a first coagulation and sedimentation tank, an air flotation machine, and a second coagulation and sedimentation tank. During operation, the combined cleaning wastewater and phosphating cleaning wastewater enter their respective sets of sulfuric acid dosing and mixing tanks through corresponding pipelines. The mixed wastewater is then separated by an oil separator and flows into the corresponding combined cleaning wastewater collection tank and phosphating cleaning wastewater collection tank. Wastewater from these tanks is then pumped out and sent to the corresponding first coagulation and sedimentation tank for further mixing. Silane wastewater is treated with pH adjusters, demulsifiers, and coagulants, while phosphating wastewater is treated with pH adjusters and flocculation agents. The wastewater, after being treated with chemicals such as coagulants and flocculants, is then subjected to air flotation in an air flotation machine. The two types of pretreated wastewater are then fed into the second coagulation sedimentation tank for further chemical addition and sedimentation. The wastewater is then further treated in subsequent stages, including the integrated equalization tank, hydrolysis acidification tank, aerobic aeration tank, MBR membrane treatment tank, secondary sedimentation tank, and clear water tank. The MBR membrane treatment tank is located at the end of the water treatment system to monitor the wastewater treatment effect at the end. This ensures that even if the treatment effect of the wastewater in the pretreatment and biological stages fluctuates, the wastewater treated by the MBR system can always meet the requirements of consistently achieving the standards, thus realizing the function of classified and quality-specific treatment. Attached Figure Description

[0015] Figure 1 This is a frontal cross-sectional view of the present invention.

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 This is a partial enlarged cross-sectional view of the first coagulation sedimentation tank of this utility model.

[0018] Figure 4 This is a top-view enlarged structural diagram of the first coagulation sedimentation tank of this utility model.

[0019] In the diagram: 1. Main tank; 2. Phosphating cleaning wastewater collection tank; 3. Comprehensive cleaning wastewater collection tank; 4. Oil separator; 5. Sulfuric acid dosing and mixing tank; 6. First coagulation sedimentation tank; 7. Coagulant dosing tank; 8. Wastewater inlet; 9. Agitator motor; 10. Inclined tube sedimentation packing; 11. Outlet; 12. Air flotation machine; 13. Second coagulation sedimentation tank; 14. Comprehensive equalization tank; 15. Hydrolysis acidification tank; 16. Aerobic aeration tank; 17. MBR membrane treatment tank; 18. Secondary sedimentation tank; 19. Clear water tank; 20. Sludge discharge outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Please refer to Figure 1-4 A surface treatment wastewater treatment device for new energy vehicle production includes a main body 1. A comprehensive cleaning wastewater collection tank 3 is located on the left side inside the main body 1. Two sets of oil separators 4 are located on the left side of the comprehensive cleaning wastewater collection tank 3. A phosphating cleaning wastewater collection tank 2 is located on the right side of the comprehensive cleaning wastewater collection tank 3. A comprehensive regulating tank 14 is located on the right side of the phosphating cleaning wastewater collection tank 2. A hydrolysis acidification tank 15 is located on the right side of the comprehensive regulating tank 14. An aerobic aeration tank 16 is located on the right side of the hydrolysis acidification tank 15. An MBR membrane treatment tank 17 is located on the right side of the aerobic aeration tank 16. A clear water tank 19 is located on the right side inside the main body 1. A secondary sedimentation tank 18 is located between the MBR membrane treatment tank 17 and the clear water tank 19. A pretreatment component capable of classifying and treating wastewater is located on the left side of the top of the main body 1.

[0022] Please see Figure 1-4 A surface treatment wastewater treatment device for new energy vehicle production also includes a pretreatment component. The pretreatment component includes two sets of first coagulation sedimentation tanks 6. The two sets of first coagulation sedimentation tanks 6 are fixedly connected to the left side of the top of the main body 1. Two sets of sulfuric acid dosing and stirring tanks 5 are respectively arranged on the left side of the two sets of first coagulation sedimentation tanks 6. A coagulant addition tank 7 is welded to the left side of the first coagulation sedimentation tank 6. A wastewater inlet 8 is provided at the top of the front end of the coagulant addition tank 7. Three sets of stirring motors 9 are installed at the top of the coagulant addition tank 7. Inclined tube sedimentation packing 10 is horizontally fixedly connected between the two sides inside the first coagulation sedimentation tank 6. An outlet 11 is provided at the top of the right side of the first coagulation sedimentation tank 6. A sludge discharge outlet 20 is fixedly connected to the bottom of the front end of the first coagulation sedimentation tank 6. An air flotation machine 12 is provided on the right side of the first coagulation sedimentation tank 6. A second coagulation sedimentation tank 13 is provided at the front end of the air flotation machine 12.

[0023] The first coagulation sedimentation tank 6 and the second coagulation sedimentation tank 13 have the same internal structure. The first coagulation sedimentation tank 6 and the coagulant dosing tank 7 are internally connected. The first coagulation sedimentation tank 6 and the air flotation machine 12 are internally connected. The tops of the phosphating cleaning wastewater collection tank 2, the comprehensive cleaning wastewater collection tank 3, and the grease trap 4 are flush with the ground. The phosphating cleaning wastewater collection tank 2, the comprehensive cleaning wastewater collection tank 3, and the grease trap 4 are internally connected. The second coagulation sedimentation tank 13 and the comprehensive regulating tank 14 are internally connected. The top of tank 14 is higher than the top of phosphate cleaning wastewater collection tank 2. The tops of integrated equalization tank 14, hydrolysis acidification tank 15, aerobic aeration tank 16, MBR membrane treatment tank 17, secondary sedimentation tank 18, and clear water tank 19 are flush. Aerobic aeration tank 16 and MBR membrane treatment tank 17 have the same size and specifications. Integrated equalization tank 14, hydrolysis acidification tank 15, aerobic aeration tank 16, MBR membrane treatment tank 17, secondary sedimentation tank 18, and clear water tank 19 are connected by pipes to classify and treat two different types of wastewater separately.

[0024] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the wastewater after being mixed with chemicals in two sets of sulfuric acid dosing and mixing tanks 5 passes through the oil separator 4 for oil separation and flows into the corresponding comprehensive cleaning wastewater collection tank 3 and phosphating cleaning wastewater collection tank 2. The wastewater in the comprehensive cleaning wastewater collection tank 3 and phosphating cleaning wastewater collection tank 2 is pumped out and sent to the corresponding first coagulation sedimentation tank 6 for chemical mixing. Silane wastewater is treated with the addition of pH adjusters, demulsifiers, coagulants and other agents, while phosphating wastewater is treated with the addition of pH adjusters, flocculants, coagulants and other agents. The wastewater then passes through the air flotation machine 12 for air flotation. The two pretreated wastewaters finally enter the second coagulation sedimentation tank 13 for further chemical sedimentation.

[0025] Working Principle: In use, the wastewater from the integrated cleaning process and the wastewater from the phosphating cleaning process first enter their respective sets of sulfuric acid dosing and mixing tanks 5 through corresponding pipes for dosing and mixing. The mixed wastewater then passes through the oil separator 4 for oil separation and flows into the corresponding integrated cleaning wastewater collection tank 3 and phosphating cleaning wastewater collection tank 2. The wastewater in the integrated cleaning wastewater collection tank 3 and phosphating cleaning wastewater collection tank 2 is then pumped out and sent to the corresponding first coagulation and sedimentation tank 6 for dosing and mixing. Silane wastewater is treated with the addition of pH adjusters, demulsifiers, coagulants, etc., while phosphating wastewater is treated with the addition of pH adjusters, flocculants, coagulants, etc. After passing through the air flotation machine 12, the two types of pretreated wastewater are finally fed into the second coagulation sedimentation tank 13 for further chemical precipitation. Then, they are processed one by one through the subsequent integrated equalization tank 14, hydrolysis acidification tank 15, aerobic aeration tank 16, MBR membrane treatment tank 17, secondary sedimentation tank 18, and clear water tank 19. The MBR membrane treatment tank 17 is located at the end of the water treatment device to monitor the wastewater treatment effect at the end, ensuring that even if the treatment effect of the wastewater in the pretreatment and biological stages fluctuates, the wastewater effluent can always meet the requirements of stable compliance under the treatment of the MBR system.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A surface treatment wastewater treatment device for new energy vehicle production, comprising a main housing (1), characterized in that: The main body (1) has a comprehensive cleaning wastewater collection tank (3) on the left side, two oil separators (4) on the left side of the comprehensive cleaning wastewater collection tank (3), a phosphating cleaning wastewater collection tank (2) on the right side of the comprehensive cleaning wastewater collection tank (3), a comprehensive regulating tank (14) on the right side of the phosphating cleaning wastewater collection tank (2), a hydrolysis acidification tank (15) on the right side of the comprehensive regulating tank (14), an aerobic aeration tank (16) on the right side of the hydrolysis acidification tank (15), an MBR membrane treatment tank (17) on the right side of the aerobic aeration tank (16), a clear water tank (19) on the right side of the main body (1), a secondary sedimentation tank (18) between the MBR membrane treatment tank (17) and the clear water tank (19), and a pretreatment component that can be classified and treated on the left side of the top of the main body (1). The pretreatment component includes two sets of first coagulation sedimentation tanks (6). The two sets of first coagulation sedimentation tanks (6) are fixedly connected to the left side of the top of the main body (1). Two sets of sulfuric acid dosing and stirring tanks (5) are respectively set on the left side of the two sets of first coagulation sedimentation tanks (6). A coagulant dosing tank (7) is welded to the left side of the first coagulation sedimentation tank (6). A sewage inlet (8) is set at the top of the front end of the coagulant dosing tank (7). Three sets of stirring motors (9) are installed at the top of the coagulant dosing tank (7). Inclined tube sedimentation packing (10) is fixedly connected horizontally between the two sides inside the first coagulation sedimentation tank (6). A water outlet (11) is set at the top right side of the first coagulation sedimentation tank (6). A sludge discharge outlet (20) is fixedly connected to the bottom of the front end of the first coagulation sedimentation tank (6). An air flotation machine (12) is set on the right side of the first coagulation sedimentation tank (6). A second coagulation sedimentation tank (13) is set at the front end of the air flotation machine (12).

2. The surface treatment wastewater treatment device for new energy vehicle production according to claim 1, characterized in that: The first coagulation sedimentation tank (6) and the second coagulation sedimentation tank (13) have the same internal structure, and the first coagulation sedimentation tank (6) and the coagulant addition tank (7) are internally connected.

3. The surface treatment wastewater treatment device for new energy vehicle production according to claim 1, characterized in that: The first coagulation sedimentation tank (6) and the air flotation machine (12) are internally connected, and the top of the phosphating cleaning wastewater collection tank (2), the comprehensive cleaning wastewater collection tank (3), and the oil separator (4) are flush with the ground.

4. The surface treatment wastewater treatment device for new energy vehicle production according to claim 1, characterized in that: The phosphating cleaning wastewater collection tank (2), the comprehensive cleaning wastewater collection tank (3), and the oil separator (4) are internally connected, and the second coagulation sedimentation tank (13) and the comprehensive regulating tank (14) are internally connected.

5. A surface treatment wastewater treatment device for new energy vehicle production according to claim 1, characterized in that: The top of the integrated regulating tank (14) is higher than the top of the phosphating cleaning wastewater collection tank (2), and the tops of the integrated regulating tank (14), hydrolysis acidification tank (15), aerobic aeration tank (16), MBR membrane treatment tank (17), secondary sedimentation tank (18), and clear water tank (19) are flush.

6. A surface treatment wastewater treatment device for new energy vehicle production according to claim 1, characterized in that: The aerobic aeration tank (16) and the MBR membrane treatment tank (17) are of the same size and specifications. The integrated regulating tank (14), the hydrolysis acidification tank (15), the aerobic aeration tank (16), the MBR membrane treatment tank (17), the secondary sedimentation tank (18), and the clear water tank (19) are connected by pipelines.

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