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Recycling treatment process of electroplating rinse water

A treatment process and technology for rinsing water, applied in water/sewage treatment, multi-stage water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problems of large amount of sludge containing heavy metals and difficulty in secondary pollution, and achieve Reduce the uneven surface of the sediment layer, improve economic and environmental benefits, and reduce sewage discharge

Pending Publication Date: 2022-05-27
东莞市盛德电解设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the process is mature, the equipment investment is relatively low, and the operating cost is low. Its disadvantage is that the heavy metal-containing sludge produced by chemical precipitation is large, which is difficult to handle and causes secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 provides a process for reusing electroplating rinsing water, comprising at least the following steps:

[0047](1) Electrodeposition: take the electroplating silver rinsing water and put it into the storage tank, and detect that the silver ion content is 120 mg / L, then suck it into the electrodeposition tank of the electrodeposition device, and adsorb the metal cations of the electroplating rinsing water by electrodeposition. to the cathode; wherein the bottom of the electrodeposition tank is provided with a stirring assembly, and one end of the cathode is set on the stirring assembly, so that it can be rotated, the cathode is a cylindrical structure, and a strip-shaped opening with a width of 1.5mm is opened along the axial direction, and the upper end of the cathode Four evenly distributed liquid-passing holes are arranged, and anodes are arranged inside and outside the cathode. Turn on the switch of the electrodeposition device, set the voltage to 1.5V, s...

Embodiment 2

[0051] Embodiment 2 provides a process for reusing electroplating rinsing water, comprising at least the following steps:

[0052] (1) Electrodeposition: get the electroplating silver rinsing water and put it into the storage tank, and detect that the silver ion content is 120 mg / L, then inhale the electrodeposition tank of the electrodeposition device, and the electrodeposition tank is two in total, in a parallel manner connection, that is, connected with the liquid storage tank through the washing liquid pipe respectively. The metal cations in the electroplating rinsing water are adsorbed to the cathode by electrodeposition; wherein a stirring component is arranged at the bottom of each electrodeposition tank, and one end of the cathode is arranged on the stirring component, so that it can be rotated, and the cathode is a cylindrical structure. A strip-shaped opening with a width of 1.5 mm is provided in the axial direction, and the upper end of the cathode is provided with ...

Embodiment 3

[0056] Embodiment 3 provides a recycling treatment process of electroplating rinsing water, comprising at least the following steps:

[0057] (1) Electrodeposition: get the electroplating silver rinsing water and put it into the liquid storage bucket, and detect that the silver ion content is 120mg / L, then inhale the electrodeposition tank of the electrodeposition device, and the electrodeposition tank is two in total, in a series connection Connection, that is, the drain pipe of the first electrodeposition tank is connected with the suction pipe of the second electrodeposition tank, and the first electrodeposition tank electrodeposits the silver rinsing water, and then the second electrodeposition tank continues the electrodeposition and electroplating. Silver rinse water. The metal cations of the electroplating rinsing water are adsorbed to the cathode of each electrodeposition tank by continuous electrodeposition; wherein a stirring component is arranged at the bottom of ea...

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PUM

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Abstract

The invention belongs to the technical field of industrial wastewater treatment, and particularly relates to a recycling treatment process of electroplating rinse water. The method at least comprises the following steps: (1) electro-deposition: filling electroplating rinse water into a liquid storage barrel, then sucking the electroplating rinse water into an electro-deposition tank of an electro-deposition device, and adsorbing metal cations in the electroplating rinse water to a cathode in an electro-deposition manner; and (2) circulation: discharging the electroplating rinse water subjected to the first electrodeposition to a liquid storage barrel, sucking the electroplating rinse water into an electrodeposition tank of the electrodeposition device again, and adsorbing residual metal ions in the electroplating rinse water to a cathode in an electrodeposition mode again. The method can greatly reduce the cation content in the electroplating rinse water, realizes water recovery, can obtain an electrodeposited metal layer at the cathode, and realizes metal recycling.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to a process for reusing electroplating rinsing water. Background technique [0002] The electroplating industry is an important processing industry in my country. According to a rough estimate, there are currently 15,000 electroplating production plants in the country, with a total of more than 500,000 employees in the industry, more than 5,000 production lines and a production capacity of 250-300 million m2 electroplating area. The annual output value of the electroplating industry is about 10 billion yuan. [0003] The recycling and utilization of electroplating rinse water is an important means for the electroplating industry to reduce investment costs and reduce pollution. There are the following methods: chemical precipitation, chemical redox, electrolysis, coagulation, air flotation, adsorption, ion exchange method, membrane separation met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/00C02F1/469C02F1/66C02F101/10C02F101/20
CPCC02F9/00C02F1/001C02F1/66C02F1/469C02F2101/10C02F2101/20Y02P10/20
Inventor 李杰新
Owner 东莞市盛德电解设备科技有限公司
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