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Treatment device and method for implementing total recycling of electroplating rinse water

A processing device and processing method technology, applied in the direction of electrolysis process, electrolysis components, cells, etc., can solve the problems of complex shape of electroplating workpiece and cannot be cleaned, achieve easy equipment maintenance and management, save rinsing water, and low one-time investment. Effect

Inactive Publication Date: 2017-02-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device project of the present invention removes the multi-stage spray recovery tank below the spray tank in the prior art by retaining the spray cleaning tank, and adds two countercurrent rinsing systems behind the spray cleaning tank, thereby solving the problem of complex shapes of electroplating workpieces The problem of not being able to clean

Method used

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  • Treatment device and method for implementing total recycling of electroplating rinse water

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Effect test

Embodiment 1

[0024] The processing device for realizing the full recovery and utilization of electroplating rinsing water of the present invention includes a spray system device (a) and two countercurrent rinsing systems (b) and (c), wherein the spray system device (a) Including water pump, spray tank, nozzle and connecting pipeline. The nozzle pipeline is fixed at the corresponding position of the spray tank. The spray tank has a corresponding water pump and three-way valve. There is a water outlet on the left side of the three-way valve, which can lead to Coating tank; the counter-current rinsing system device (b), (c) includes 2 rinsing tanks, 2 sumps, water pump, three-way valve, water outlet, water inlet and pipe network, 2 rinsing tanks are connected in series At the same time, the upper end of the three-way valve at the water inlet of the second-stage rinsing tank is provided with a water inlet to achieve water intake for supplement; the spray tank, nozzles and connecting pipelines in...

Embodiment 2

[0028] The device and method of the invention are applied to the silver plating production of a certain electroplating enterprise. Such as figure 1 As shown, the others in this embodiment are as in embodiment 1, the silver-plating DC power supply is 1000A, and the plating tank is 16M 3 , The total area of ​​plateable parts per tank is 2000dm 2 , The electroplating time is 15 minutes, and 6000ml of plating solution is taken out of the plating tank each time. If calculated based on the uninterrupted production of 365 days a year, 24 hours a day, 210240L of plating solution from the plating tank will be recovered every year; Calculated based on the amount of plating solution contained in the rinsing water in the plating solution of 500 mg / L, 420,480 tons of water used for rinsing can be saved each year, and 420,480 tons of silver plating wastewater can be treated less annually.

Embodiment 3

[0030] The device and method of the invention are applied to nickel plating production in electroplating enterprises. Such as figure 1 As shown, the others in this embodiment are as in embodiment 1, the nickel-plating DC power supply is 1000A, and the plating tank is 6M 3 , The total area of ​​plateable parts per tank is 667dm 2 , The electroplating time is 15 minutes, and 1000ml of plating solution is taken out of the plating tank each time. If calculated as 365 days a year, 24 hours a day, uninterrupted production, 35040L of plating solution from the plating tank will be recovered every year; Calculated based on the amount of plating solution contained in the rinsing water in the plating solution of 500mg / L, 70080 tons of water used for rinsing can be saved each year, and 70080 tons of nickel-plating wastewater can be treated less annually.

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Abstract

The invention discloses a treatment device and method for implementing total recycling of electroplating rinse water. By the device, a plating solution which is brought out from a plating tank can be basically recycled completely, any waste water is not generated, and all rinse water (except rinse water evaporated in air) is reused completely. The device comprises a spraying system device (a) and two reverse-flow rinse systems (b) and (c), wherein the spraying system device (a) comprises a water pump, a spraying tank, a nozzle and a connecting pipeline; a pipeline of the nozzle is fixed at a corresponding position of the spraying tank; the spraying tank is provided with a corresponding water tank and a three-way valve; a water outlet is formed in the left side of the three-way valve and can lead to the plating tank; each of the two reverse-flow rinse systems (b) and (c) comprises two rinse tanks, two water collecting ponds, a water pump, a three-way valve, a water outlet, a water inlet and a pipe network; the two rinse tanks of each of the two reverse-flow rinse systems (b) and (c) are serially connected, meanwhile, the water inlet is formed in the upper end of the three-way valve of the water inlet of the corresponding secondary rinse tank, and then water is taken and supplemented.

Description

Technical field [0001] The invention relates to a processing device and method for zero discharge of rinsing water, and more particularly to a processing device and method for realizing full recovery and utilization of electroplating rinsing water. Background technique [0002] Electroplating is one of the industrial industries with strong versatility and wide application. Almost all industrial sectors have a certain range of electroplating processing. However, the electroplating industry wastewater is extremely harmful to the environment. Different electroplating processes will produce different electroplating wastewater, mainly including the wastewater generated before electroplating, the waste liquid generated during the electroplating process of the plated parts, and the electroplating rinse generated by the cleaning of the plated parts after plating. Wastewater. However, the methods of treating electroplating wastewater in traditional industries have certain limitations. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D21/20
CPCC25D21/20
Inventor 周永璋王新宇陈李张姣姣
Owner NANJING UNIV OF TECH
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