Electroplating wastewater treatment equipment

Abstract

The utility model relates to the technical field of wastewater treatment equipment, in particular to electroplating wastewater treatment equipment which comprises a cage lifting grating, an adjusting box, a cyanide breaking reaction tank and a comprehensive adjusting tank, a lifting cage grating is placed on the inner wall of the adjusting box through a hook, one side of the adjusting box is connected with a cyanide breaking reaction tank through a water pump and a water pipe, and one side of the cyanide breaking reaction tank is connected with a comprehensive adjusting tank through a water pump and a water pipe. According to the electroplating wastewater treatment equipment, it is ensured that the SDI value can meet the water inlet requirement of the DTRO filter through the multi-medium filter, a reducing agent and an antisludging agent are added into the pipeline mixer, it is ensured that no residual chlorine enters the DTRO filter, it is ensured that no particulate matter larger than 5 micrometers enters the DTRO filter through the security filter, wastewater is fed into the DTRO filter through the plunger pump, and COD, COD and the DTRO filter are subjected to chemical vapor deposition. Pollutants such as heavy metals are separated and removed under the action of the semipermeable membrane, so that the electroplating wastewater treatment equipment performs automatic treatment.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment equipment, specifically to an electroplating wastewater treatment device. Background Technology

[0002] Electroplating wastewater mainly originates from the wastewater generated during the decoration and protection of non-metallic and metallic surfaces using electrochemical and chemical methods. It includes wastewater from pickling, rinsing, passivation, floor cleaning, and electrode cleaning of plated parts. Electroplating wastewater has a complex composition and is difficult to treat, requiring the use of electroplating wastewater treatment equipment to meet discharge requirements before being released. However, existing electroplating wastewater treatment equipment still has certain shortcomings in its use, such as…

[0003] Existing electroplating wastewater treatment equipment requires numerous devices and processes for separate treatment, occupies a large area, has high investment costs, involves complex and diverse chemical dosing, has low automation, and is difficult to control. Utility Model Content

[0004] The purpose of this invention is to provide an electroplating wastewater treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electroplating wastewater treatment device, comprising: a cage-type grid, a regulating tank, a cyanide-breaking reaction tank, and a comprehensive regulating tank;

[0006] The inner wall of the regulating box is equipped with a lifting cage grid via hooks. One side of the regulating box is connected to a cyanide-breaking reaction tank via a water pump and a water pipe. The other side of the cyanide-breaking reaction tank is connected to a comprehensive regulating tank via a water pump and a water pipe. The back of the comprehensive regulating tank is connected to a coagulation mechanism via a water pump and a water pipe. The back of the coagulation mechanism is connected to a water storage tank via a water pump and a water pipe. One side of the lifting cage grid is connected to an electrical control cabinet.

[0007] One side of the water storage tank is connected to a multi-media filter via a water pump and a water pipe. One side of the multi-media filter is connected to a pipeline mixer, and one side of the pipeline mixer is connected to a security filter.

[0008] Preferably, one side of the security filter is connected to an a-product water conductivity meter, one side of the a-product water conductivity meter is connected to an a-flow meter, one side of the a-flow meter is connected to a pressure sensor, one side of the pressure sensor is connected to a plunger pump, the other end of the plunger pump is connected to an accumulator, and one side of the accumulator is connected to a pressure relief valve.

[0009] Preferably, one side of the pressure relief valve is connected to a branch pipe a, one side of the branch pipe a is connected to an online circulation pump, and a DTRO filter is connected above the branch pipe a. A product water conductivity meter b is connected above the DTRO filter via a branch pipe, one side of the product water conductivity meter b is connected to a flow meter b, and one side of the flow meter b is connected to a product water electric valve.

[0010] Preferably, the bottom of the DTRO filter is connected to a branch pipe b, one side of the branch pipe b is connected to a valve a, the back of the valve a is connected to a valve b, the back of the valve b is connected to a valve c, and the valve c is connected to the end of the branch pipe a.

[0011] Preferably, the coagulation mechanism includes a multi-compartment mixing tank connected to the back of a comprehensive regulating tank via a water pump and water pipes. The bottom of the multi-compartment mixing tank is connected to a sedimentation hopper, the back of the sedimentation hopper is connected to a water storage tank via a water pump and water pipes, and the bottom of the sedimentation hopper is connected to an electric door.

[0012] Preferably, the bottom of the multi-compartment mixing box is bolted to an anti-corrosion shell, and a drive motor is connected to the inner wall of the anti-corrosion shell. The output end of the drive motor passes through the inner wall of the anti-corrosion shell and is connected to a rotating shaft through a coupling.

[0013] Preferably, the bottom of the rotating shaft is connected to an auger, which is rotatably connected to the inner wall of the sedimentation tank via a support plate.

[0014] Preferably, a connecting rod is connected to the outer side of the rotating shaft, and an arc-shaped scraper is connected to the other end of the connecting rod, the arc-shaped scraper abutting against the inner wall of the sedimentation tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This electroplating wastewater treatment equipment ensures that the SDI value meets the influent requirements of the DTRO filter through a multi-media filter; it adds reducing agent and scale inhibitor into the pipeline mixer to ensure that no residual chlorine enters the DTRO filter; a security filter ensures that no particles larger than 5μm enter the DTRO filter; and a plunger pump sends the wastewater into the DTRO filter, where pollutants such as COD and heavy metals are separated and removed through the semi-permeable membrane. This allows the electroplating wastewater treatment equipment to automate the process. The specific details are as follows:

[0016] 1. A multi-media filter ensures that the SDI value meets the influent requirements of the DTRO filter. A reducing agent and scale inhibitor are added to the pipeline mixer to ensure that no residual chlorine enters the DTRO filter. A security filter ensures that no particles larger than 5μm enter the DTRO filter. A plunger pump sends the wastewater into the DTRO filter for desalination and removal of organic matter. COD, heavy metals and other pollutants are separated and removed through a semi-permeable membrane to meet the discharge requirements. The wastewater is then discharged from the product water electric valve, thus enabling the electroplating wastewater treatment equipment to process the wastewater automatically.

[0017] 2. By opening the electric door and starting the drive motor to rotate the auger, which in turn rotates the arc-shaped scraper, the residue on the inner wall of the sedimentation tank is scraped off and discharged through the electric door, thus preventing sedimentation residue in the electroplating wastewater treatment equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the pipeline mixer of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the online circulating pump of this utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the cyanide-breaking reaction tank of this utility model;

[0022] Figure 5 This is a schematic diagram of the main cross-sectional structure of the multi-compartment mixing box of this utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the sedimentation tank of this utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the arc-shaped scraper of this utility model.

[0025] In the diagram: 1. Cage grille; 2. Regulating tank; 3. Cyanide breaking reaction tank; 4. Integrated regulating tank; 5. Coagulation mechanism; 501. Multi-compartment mixing tank; 502. Sedimentation hopper; 503. Electric gate; 504. Corrosion-resistant shell; 505. Drive motor; 506. Shaft; 507. Screwdriver; 508. Connecting rod; 509. Arc-shaped scraper; 6. Water storage tank; 7. Multi-media filter; 8. Pipeline mixer; 9. Safety filter. Filter; 10. DTRO filter; 11. Plunger pump; 12. Pressure sensor; 13. Pressure relief valve; 14. Accumulator; 15. Online circulation pump; 16. Product water electric valve; 17. a. Valve; 18. a. Flow meter; 19. a. Product water conductivity meter; 20. Electrical control cabinet; 21. b. Product water conductivity meter; 22. b. Flow meter; 23. a. Branch pipe; 24. b. Branch pipe; 25. b. Valve; 26. c. Valve. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-4This utility model provides a technical solution: an electroplating wastewater treatment device, comprising: a cage grille 1, a regulating tank 2, a cyanide-breaking reaction tank 3, and a comprehensive regulating tank 4; the cage grille 1 is placed on the inner wall of the regulating tank 2 via hooks, and one side of the regulating tank 2 is connected to the cyanide-breaking reaction tank 3 via a water pump and water pipe, and one side of the cyanide-breaking reaction tank 3 is connected to the comprehensive regulating tank 4 via a water pump and water pipe, the back of the comprehensive regulating tank 4 is connected to a coagulation mechanism 5 via a water pump and water pipe, and the back of the coagulation mechanism 5 is connected to a water storage tank 6 via a water pump and water pipe, and one side of the cage grille 1 is connected to an electrical control cabinet 20; one side of the water storage tank 6 is connected to a multi-media filter 7 via a water pump and water pipe, one side of the multi-media filter 7 is connected to a pipeline mixer 8, one side of the pipeline mixer 8 is connected to a security filter 9, one side of the security filter 9 is connected to an a-product water conductivity meter 19, and one side of the a-product water conductivity meter 19 is connected to an a-flow meter 18. A pressure sensor 12 is connected to one side of flow meter 18. A plunger pump 11 is connected to one side of pressure sensor 12. An accumulator 14 is connected to the other end of plunger pump 11. A pressure relief valve 13 is connected to one side of accumulator 14. A branch pipe 23 is connected to one side of branch pipe 23. An online circulation pump 15 is connected to one side of branch pipe 23. A DTRO filter 10 is connected to the top of branch pipe 23. A product water conductivity meter 21 is connected to the top of DTRO filter 10 via a branch pipe. A flow meter 22 is connected to one side of product water conductivity meter 21. A product water electric valve 16 is connected to one side of flow meter 22. A branch pipe 24 is connected to the bottom of DTRO filter 10. A valve 17 is connected to one side of branch pipe 24. A valve 25 is connected to the back of valve 17. A valve 26 is connected to the back of valve 25. Valve 26 is connected to the end of branch pipe 23.

[0028] In specific implementation, a multi-media filter 7 is used to ensure that the SDI value meets the influent requirements of the DTRO filter 10, while removing some residual chlorine. A reducing agent and scale inhibitor are added to the pipeline mixer 8 to react with the residual chlorine in the wastewater, ensuring that no residual chlorine enters the DTRO filter 10. A security filter 9 ensures that no particles larger than 5μm enter the DTRO filter 10. A plunger pump 11 sends the wastewater into the DTRO filter 10. The DTRO filter 10 desalinates and removes organic matter, separating and removing pollutants such as COD and heavy metals through a semi-permeable membrane. The permeate is discharged as compliant wastewater from the permeate electric valve 16. Valves a 17 and c 26 are opened, and the coagulation mechanism 5 of the pressure sensor 12 is closed. Clean water is introduced through valve a 17, then valves a 17 and c 26 are closed, the coagulation mechanism 5 of the pressure sensor 12 is opened, and the online circulation pump 15 is started to backwash the DTRO filter 10. Then, valve a 17 is opened to discharge the wastewater, allowing the electroplating wastewater treatment equipment to process the wastewater automatically.

[0029] See Figure 1 , Figure 2 and Figures 5-7 It is known that the coagulation mechanism 5 includes a multi-compartment mixing tank 501 connected to the back of the integrated regulating tank 4 via a water pump and water pipes. The bottom of the multi-compartment mixing tank 501 is connected to a sedimentation hopper 502. The back of the sedimentation hopper 502 is connected to a water storage tank 6 via a water pump and water pipes. An electric door 503 is connected to the bottom of the sedimentation hopper 502. A corrosion-resistant shell 504 is bolted to the bottom of the multi-compartment mixing tank 501. A drive motor 505 is connected to the inner wall of the corrosion-resistant shell 504. The output end of the drive motor 505 passes through the inner wall of the corrosion-resistant shell 504 and is connected to a rotating shaft 506 via a coupling. An auger 507 is connected to the bottom of the rotating shaft 506. The auger 507 is rotatably connected to the inner wall of the sedimentation hopper 502 via a support plate. A connecting rod 508 is connected to the outside of the rotating shaft 506. An arc-shaped scraper 509 is connected to the other end of the connecting rod 508. The arc-shaped scraper 509 abuts against the inner wall of the sedimentation hopper 502.

[0030] In practice, the electric door 503 is opened and the drive motor 505 is started to drive the rotating shaft 506 and the auger 507 to rotate. The auger 507 discharges the sediment from the electric door 503. At the same time, the rotating shaft 506 drives the arc-shaped scraper 509 to rotate through the connecting rod 508, scraping off the residue on the inner wall of the sedimentation tank 502 and discharging it from the electric door 503, thus preventing sedimentation residue from the electroplating wastewater treatment equipment.

[0031] In summary: When using this electroplating wastewater treatment equipment, firstly, the electroplating wastewater is poured into the cage screen 1 to filter out large pieces of dirt, then flows into the regulating tank 2 for temporary storage, and then is transported to the cyanide-breaking reaction tank 3. In the first reaction zone of the cyanide-breaking reaction tank 3, NaOH is added and stirred. The pH is monitored using a pH meter to adjust the pH to the optimal alkaline cyanide-breaking reaction conditions. Then, the wastewater enters the second zone through a solenoid valve, and the oxidant NaClO is added for cyanide-breaking treatment. Next, HCl is added to the third zone through a solenoid valve to further adjust the pH. Finally, the wastewater enters the fourth zone through a solenoid valve, and the oxidant NaClO is added to break down the cyanide. The cyanide-removed wastewater flows into the comprehensive regulating tank 4 along with other wastewater and is then transported to the coagulation mechanism 5. In the first reaction zone of the coagulation mechanism 5, the wastewater is adjusted... To adjust the pH, PAC and PAM are added to the second and third compartments, and the solution enters the sedimentation hopper 502 via a solenoid valve. Suspended solids and small particulate solids (SS) quickly agglomerate and settle in the inclined tube area. The clear liquid on the sedimentation hopper 502 is then transferred to the water storage tank 6 for storage. If necessary, sulfuric acid can be added to maintain the pH of the water at 6.5 to prevent carbonate scaling. The wastewater in the water storage tank 6 is then sent to the multi-media filter 7 for filtration. After the residual chlorine is removed by the pipeline mixer 8, it is filtered again by the security filter 9. The plunger pump 11 then sends the water to the DTRO filter 10, where COD, heavy metals, and other pollutants are separated and removed through a semi-permeable membrane. The treated water meets the discharge requirements and is discharged from the product water electric valve 16. Any content not described in detail in this instruction belongs to the prior art known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electroplating wastewater treatment apparatus comprising: The components include a cage grid (1), a regulating tank (2), a cyanide-breaking reaction tank (3), a comprehensive regulating tank (4), and a DTRO filter (10). Its characteristics are: The inner wall of the regulating box (2) is equipped with a cage grille (1) by hooks, and one side of the regulating box (2) is connected to a cyanide-breaking reaction tank (3) by a water pump and a water pipe. One side of the cyanide-breaking reaction tank (3) is connected to a comprehensive regulating tank (4) by a water pump and a water pipe. The back of the comprehensive regulating tank (4) is connected to a coagulation mechanism (5) by a water pump and a water pipe. The back of the coagulation mechanism (5) is connected to a water storage tank (6) by a water pump and a water pipe. One side of the cage grille (1) is connected to an electrical control cabinet (20). One side of the water storage tank (6) is connected to a multi-media filter (7) via a water pump and a water pipe. One side of the multi-media filter (7) is connected to a pipeline mixer (8). One side of the pipeline mixer (8) is connected to a security filter (9).

2. The electroplating wastewater treatment equipment according to claim 1, characterized in that: One side of the security filter (9) is connected to an a-product water conductivity meter (19), one side of the a-product water conductivity meter (19) is connected to an a-flow meter (18), one side of the a-flow meter (18) is connected to a pressure sensor (12), one side of the pressure sensor (12) is connected to a plunger pump (11), the other end of the plunger pump (11) is connected to an accumulator (14), and one side of the accumulator (14) is connected to a pressure relief valve (13).

3. The electroplating wastewater treatment equipment according to claim 2, characterized in that: One side of the pressure relief valve (13) is connected to a branch pipe (23), one side of the branch pipe (23) is connected to an online circulation pump (15), and a DTRO filter (10) is connected above the branch pipe (23). A product water conductivity meter (21) is connected above the DTRO filter (10) through a branch pipe. A flow meter (22) is connected to one side of the product water conductivity meter (21), and a product water electric valve (16) is connected to one side of the flow meter (22).

4. The electroplating wastewater treatment equipment according to claim 2, characterized in that: The bottom of the DTRO filter (10) is connected to a b branch pipe (24), a valve (17) is connected to one side of the b branch pipe (24), a valve (25) is connected to the back of the a valve (17), a valve (26) is connected to the back of the b valve (25), and the valve (26) is connected to the end of the a branch pipe (23).

5. The electroplating wastewater treatment equipment according to claim 1, characterized in that: The coagulation mechanism (5) includes a multi-compartment mixing tank (501) connected to the back of the integrated regulating tank (4) via a water pump and water pipe. The bottom of the multi-compartment mixing tank (501) is connected to a sedimentation hopper (502). The back of the sedimentation hopper (502) is connected to a water storage tank (6) via a water pump and water pipe. The bottom of the sedimentation hopper (502) is connected to an electric door (503).

6. The electroplating wastewater treatment equipment according to claim 5, characterized in that: The bottom of the multi-compartment mixing box (501) is connected to a corrosion-resistant shell (504) by bolts. A drive motor (505) is connected to the inner wall of the corrosion-resistant shell (504). The output end of the drive motor (505) passes through the inner wall of the corrosion-resistant shell (504) and is connected to a rotating shaft (506) by a coupling.

7. The electroplating wastewater treatment equipment according to claim 6, characterized in that: The bottom of the rotating shaft (506) is connected to an auger (507), which is rotatably connected to the inner wall of the sedimentation tank (502) via a support plate.

8. The electroplating wastewater treatment equipment according to claim 6, characterized in that: A connecting rod (508) is connected to the outside of the rotating shaft (506), and an arc-shaped scraper (509) is connected to the other end of the connecting rod (508). The arc-shaped scraper (509) abuts against the inner wall of the sedimentation tank (502).

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