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Zero-discharge on-line treatment process for preparing deionized water from copper sulphate electroplating wastewater

A technology for electroplating wastewater and treatment process, applied in metallurgical wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. , to achieve the effect of zero-emission recycling, prolonging the regeneration cycle and service life

Inactive Publication Date: 2016-05-11
深圳市汇利龙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] US6162361A, CN102336481A, CN203498176U, CN202754870U, and CN201874981A are some patented technologies based on membrane separation technology. Although they have overcome some of the shortcomings of the terminal centralized treatment mode, they still have complex systems, high treatment costs, and waste water recycling. Not high, high energy consumption of evaporation and concentration, etc.
Especially the pure water produced by the membrane separation device has a minimum electrical conductivity of 5μs / cm. If no further purification treatment is carried out, such water quality cannot meet the water quality requirements of high-quality electroplating at all.
[0009] CN101717136A, CN103374743A, CN201660466U and the patents with the application number 200810219643.X disclose some recycling technologies, but there are some deficiencies in the technologies disclosed in the above-mentioned patents. Achieving true recycling

Method used

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  • Zero-discharge on-line treatment process for preparing deionized water from copper sulphate electroplating wastewater
  • Zero-discharge on-line treatment process for preparing deionized water from copper sulphate electroplating wastewater
  • Zero-discharge on-line treatment process for preparing deionized water from copper sulphate electroplating wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1: Zero-discharge online treatment process for copper sulfate electroplating wastewater

[0056] The process flow is as follows:

[0057] 1. The process flow of a copper sulfate electroplating unit for a PCB printed circuit board is: acid copper electroplating→first-stage water washing→second-stage water washing→third-stage water washing→subsequent treatment. The water flow direction of the electroplating unit is: pure water storage tank→third-level washing tank→second-level washing tank→first-level washing tank→comprehensive wastewater treatment tank.

[0058] 2. The treatment process of acid copper electroplating wastewater is:

[0059] Acid copper electroplating wastewater→activated carbon adsorption bed→divalent copper ion adsorption bed→yin bed→deionized water

[0060] Among them, the activated carbon adsorption bed is equipped with activated carbon, which is used to absorb the light agent organic matter in the electroplating wastewater. The volume of the...

Embodiment 2

[0066] Example 2 Copper Sulfate Electroplating Wastewater Zero Discharge Online Treatment Process

[0067] The process flow is as follows:

[0068] 1. The process flow of a copper sulfate electroplating unit for a PCB printed circuit board is: acid copper electroplating→first-stage water washing→second-stage water washing→third-stage water washing→subsequent treatment. The water flow direction of the electroplating unit is: pure water storage tank→third-level washing tank→second-level washing tank→first-level washing tank→comprehensive wastewater treatment tank.

[0069] 2. The treatment process of acid copper electroplating wastewater is:

[0070] Considering that acid copper electroplating wastewater also contains a small amount of sodium polydisulfide dipropane sulfonate, which is difficult to be adsorbed by activated carbon, we added an ion exchange resin adsorption bed to the above acid copper electroplating wastewater treatment process to adsorb polydisulfide Organic s...

Embodiment 3

[0077] Example 3: Zero-discharge online treatment process for copper sulfate electroplating wastewater

[0078] The process flow is as follows:

[0079] 1. The process flow of a copper sulfate electroplating unit for a PCB printed circuit board is: acid copper electroplating→first-stage water washing→second-stage water washing→third-stage water washing→subsequent treatment. The water flow direction of the electroplating unit is: pure water machine deionized water→third-stage washing tank→second-stage washing tank→first-stage washing tank→comprehensive wastewater treatment tank.

[0080] 2. The treatment process of acid copper electroplating wastewater is:

[0081] In order to further improve the quality of produced water and prolong the regeneration cycle of the resin, we added a mixed bed on the basis of the wastewater treatment process described in step 2 of Example 2.

[0082] The wastewater treatment process is as follows: acid copper electroplating wastewater→activated ...

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Abstract

The invention relates to a zero-discharge on-line treatment process for preparing deionized water from copper sulphate electroplating wastewater. The treatment process comprises 1, removing organic matters in waste water, 2, replacing heavy metal ions in the waste water treated through the step 1 with H<+> and recovering the heavy metal ions, and 3, transforming all non-hydroxyl OH<-> anions into OH<-> so that the OH<-> and H<+> are bonded in situ to produce water. For further improving water quality, the treatment process can utilize a mixed-bed treatment process after the above three processes. The high purity deionized water obtained through the above treatment process can be directly returned to a copper sulphate electroplating system so that electroplating waste water zero-discharge cycle is realized.

Description

technical field [0001] The invention relates to a zero-discharge online treatment and reuse process for preparing deionized water from copper sulfate electroplating wastewater, and belongs to the technical field of industrial wastewater treatment. Background technique [0002] There are many electroplating wastewater treatment processes, such as: physical adsorption method, ion exchange method, evaporation concentration method, chemical precipitation method, redox method, biochemical treatment method, membrane separation method, etc. The components of electroplating wastewater are different, and the treatment methods are also different. As long as it is applicable, one of the above methods can be used for treatment alone, or several combinations of the above methods can be used for treatment. [0003] A common wastewater treatment process is to use a combined method to implement a two-stage terminal centralized treatment of electroplating wastewater. The electroplating work...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/16
Inventor 成建华林雪春
Owner 深圳市汇利龙科技有限公司
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