System and method for treating wastewater of containing copper from microetching printed circuit board

A wastewater treatment system and printed circuit board technology, applied in water/sewage treatment, extracted water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of impure copper powder, incomplete copper recovery, and large water consumption Resources and other issues, to achieve the effect of difficulty and cost reduction, good economic benefits, and simple processing procedures

Inactive Publication Date: 2007-07-25
陈尚林 +1
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Problems solved by technology

[0005] The replacement method is to use iron to replace the copper in the wastewater. The main problems are that the pH value in the wastewater must be adjusted before the treatment. A certain amount of iron will be consumed during the treatment process, and the copper powder generated by the replacement is not pure. , and the copper in the wastewater cannot be recovered to the maximum extent, the reaction conditions are not easy to control, and secondary pollutants such as FeCI2 will also be produced
[0006] Th

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  • System and method for treating wastewater of containing copper from microetching printed circuit board

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[0023] A copper-containing waste water treatment system for printed circuit board micro-etching, the system includes a copper separation system, an electrolysis system, a waste water pre-treatment system and a waste water post-treatment system, and the copper separation system includes two extractors that work in circulation, namely the copper extractor separator And back extraction copper separator; electrolysis system includes electrolytic cell, sodium hypochlorite electrolytic membrane, 200AM2 current, 1MM copper plate, wastewater pre-treatment system includes copper-containing wastewater tank, PH automatic detector, gas spiralizer, wastewater post-treatment system includes oil separator, agitator, lifting oil absorber,

[0024] The PH value automatic detector is placed in the copper-containing wastewater tank to automatically monitor the PH value of the copper-containing wastewater.

[0025] The two extractors work in circulation, the waste liquid treatment capacity of the...

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Abstract

This invention discloses a system for treating copper-containing wastewater from micro etching of printed circuit board. The system comprises a copper separation system, an electrolysis system, a wastewater pre-treatment system and a wastewater post-treatment system. The copper separation system comprises a copper extractor and a copper back extractor. The electrolysis system comprises an electrolysis tank and a NaClO electrolysis membrane. The wastewater pre-treatment system comprises a copper-containing wastewater pool and an automatic pH detector. The wastewater post-treatment system comprises an oil-separation tank, a stirrer and a lift oil-absorber. The treatment method combines stirring, clarification and back extraction, and recovers solutes from aqueous solution by using extraction technique. The copper-removing rate is up to 90%, and the copper content in the wastewater is reduced by at least 80%. The wastewater can meet discharge standards.

Description

technical field [0001] The invention relates to a system and method for treating waste water generated in the production process of printed circuit boards, in particular to a system and method for treating waste water containing copper from micro-etching of printed circuit boards. Background technique [0002] Copper-containing wastewater is wastewater generated during the production of printed circuit boards. With the development of modernization in our country, the demand for electronic products is increasing day by day, most of the electronic components rely on printed circuit boards. Therefore, a large number of printed circuit boards are manufactured every day, and at the same time, a large amount of production waste liquid is also produced every day. Printed circuit board micro-etching copper-containing wastewater is one of the waste liquids. Direct discharge is harmful to the environment. At the same time, it is a pity that a large amount of copper in the waste liqui...

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Application Information

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IPC IPC(8): C02F1/26C02F1/461
Inventor 陈尚林陈荣贤
Owner 陈尚林
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