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Treatment device and method for realizing electroplating wastewater zero-release by circulated spraying method

A technology for circulating spraying and electroplating wastewater, applied in the electrolysis process, electrolysis components, cells, etc., can solve problems such as small environmental pollution, and achieve the effects of low operating costs, easy equipment maintenance and management, and space saving.

Inactive Publication Date: 2010-06-02
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

little environmental pollution

Method used

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  • Treatment device and method for realizing electroplating wastewater zero-release by circulated spraying method
  • Treatment device and method for realizing electroplating wastewater zero-release by circulated spraying method

Examples

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Effect test

Embodiment 1

[0026] The device and method of the invention are applied to galvanizing production in electroplating enterprises. Such as figure 1 As shown, in this example, the galvanizing DC power supply is 1000A, and the plating tank is 4M 3 , the total area of ​​parts that can be plated per slot is 333dm 2 , The electroplating time is 15 minutes, and 1000ml of plating solution is taken out from the plating tank each time, and 15 rinsing tanks with a volume of 50 liters are used. The galvanized parts after electroplating for 15 minutes are taken out from the plating tank and put into the spray tank 2, and the cover plate 3 is covered. The outlet three-way valve 6 on the 15 rinsing tanks 4 is in the state that the left side is connected to the vertical direction and the right side is blocked. Turn on the circulating pump 5, the rinsing water in the first-stage rinsing tank flows through the pipeline of the circulating pump 5 through K1 to the nozzle 7 and sprays on the plated parts 1, an...

Embodiment 2

[0028] The device and method of the present invention are applied to the silver plating production of an electroplating enterprise. Such as figure 1 As shown, in this example, the silver plating DC power supply is 1000A, and the plating tank is 16M 3 , the total area of ​​parts that can be plated per slot is 2000dm 2 , The electroplating time is 15 minutes, and 6000ml of plating solution is taken out from the plating tank each time, and 15 rinsing tanks with a volume of 200 liters are used. The galvanized parts after electroplating for 15 minutes are taken out from the plating tank and put into the spray tank 2, and the cover plate 3 is covered. The outlet three-way valve 6 on the 15 rinsing tanks 4 is in the state that the left side is connected to the vertical direction and the right side is blocked. Turn on the circulating pump 5, the rinsing water in the first-stage rinsing tank flows through the pipeline of the circulating pump 5 through K1 to the nozzle 7 and sprays on...

Embodiment 3

[0030] The device and method of the present invention are applied to nickel plating production in electroplating enterprises. Such as figure 1 As shown, in this example, the nickel-plating DC power supply is 1000A, and the plating tank is 6M 3 , the total area of ​​parts that can be plated per slot is 667dm 2 , The electroplating time is 15 minutes, and 1000ml of plating solution is taken out from the plating tank each time, and 15 rinsing tanks with a volume of 100 liters are used. The galvanized parts after electroplating for 15 minutes are taken out from the plating tank and put into the spray tank 2, and the cover plate 3 is covered. The outlet three-way valve 6 on the 15 rinsing tanks 4 is in the state that the left side is connected to the vertical direction and the right side is blocked. Turn on the circulating pump 5, the rinsing water in the first-stage rinsing tank flows through the pipeline of the circulating pump 5 through K1 to the nozzle 7 and sprays on the pla...

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Abstract

The invention discloses a treatment device for realizing electroplating wastewater zero-release by a circulated spraying method, which is capable of reclaiming plating solution from a coating bath in 100 percent without generating wastewater, and ensures all rinsing water can be completely reclaimed. The device consists of a circulated spraying system device, a circulated rinsing system device, an outlet tee valve and an inlet tee valve, wherein the two systems are connected by the outlet tee valve and the inlet tee valve; the circulated spraying system device comprises a circulating pump, a spray bath, a nozzle and a connecting pipeline; the circulating pump is connected with a pipeline of the nozzle, and the pipeline of the nozzle is fixed above the spray bath. The circulating rinsing system device consists of n rinsing baths, the circulating pump, a water outlet tee valve, a water inlet tee valve, a liquid level meter, a conductivity meter, a water outlet valve and a filler, wherein the numerical value of n is between 5 and 30; the n rinsing baths are connected in series; and the liquid level meter is arranged in a first stage rinsing bath, the conductivity meter is arranged in the nth stage, while the nth stage rinsing bath is provided with a water outlet.

Description

technical field [0001] The invention relates to a treatment device and method for zero discharge of wastewater, and more particularly relates to a treatment device and method for realizing zero discharge of electroplating wastewater by a circulating spraying method. 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, electroplating industrial wastewater is extremely harmful to the environment, and many countries in the world have continuously developed a variety of technologies to eliminate and reduce emissions. Roughly summarized as treating toxic as non-toxic, harmful as harmless, recycling of precious metals, multiple uses of water and recycling, etc., there are certain limitations in the methods of treating electroplating wastewater in traditional industries. The membrane separation process has developed ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D21/16
Inventor 周永璋
Owner NANJING UNIV OF TECH
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