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Electroplating wastewater processing technology and special-purpose apparatus thereof

A technology for treating process and electroplating wastewater, applied in metallurgical wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of high treatment cost, secondary pollution, poor treatment effect, etc. The effect of saving water resources and good economic benefits

Pending Publication Date: 2018-03-27
SHANGHAI JINGYU ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, electroplating wastewater treatment technologies mainly include chemical precipitation, ion exchange, membrane separation, etc., but ultimately still face problems such as high treatment cost, poor treatment effect, and secondary pollution, which seriously affect the development of electroplating enterprises. Therefore, electroplating Wastewater treatment is an important part of enterprise development

Method used

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  • Electroplating wastewater processing technology and special-purpose apparatus thereof
  • Electroplating wastewater processing technology and special-purpose apparatus thereof

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Embodiment

[0038] As attached figure 2 As shown, the special device for electroplating wastewater treatment process includes a reduction reactor 1, a decomplexation reactor 2, a cyanide-breaking reactor 3, a first sedimentation tank 4, a second sedimentation tank 5, a third sedimentation tank 6, and an intermediate Mixing tank 7, reverse osmosis unit 8 and evaporation crystallization unit 9;

[0039] The first raw water tank 10 is connected to the reduction reactor 1, a first water inlet pump 11 is installed on the connecting pipeline, the output end of the reduction reactor 1 is connected to the first sedimentation tank 4, and the clear liquid output end of the first sedimentation tank 4 is connected to the middle The mixing tank 7, the sludge output end of the first sedimentation tank 4 is connected to the first sludge treatment system 13;

[0040] The second raw water tank 14 is connected to the decomplexation reactor 2, a second water inlet pump 15 is installed on the connecting pipelin...

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Abstract

The invention discloses an electroplating wastewater processing technology and a special-purpose apparatus thereof. The electroplating wastewater is divided into chromium-containing waste water, nickel-containing waste water, cyanogen-containing waste water and comprehensive waste water, and then is subjected to classified processing, the technology is characterized in that the chromium-containingwaste water is respectively subjected to reduction and coagulating sedimentation, and then is introduced into a middle mixing system; the nickel-containing waste water is subjected to oxidation complex breaking, coagulating sedimentation, and deep processing, and then is introduced into the middle mixing system; the cyanogen-containing waste water is subjected to oxidation cyanogen breaking, is introduced into a coagulating sedimentation system after being mixed with the comprehensive waste water, and after coagulating sedimentation, is introduced into the middle mixing system for mixing to obtain the mixed waste water. The mixed waste water is subjected to reverse osmosis membrane separating, and the obtained produced water can be reused. A concentrate is subjected to evaporative crystallization, and crystalline salt can be finally obtained. The electroplating wastewater processing technology can be recyclablely used for a production line, and the obtained crystalline salt can be recycled.

Description

Technical field [0001] The invention belongs to the technical field of wastewater treatment, and specifically relates to an electroplating wastewater treatment process and a special device thereof. Background technique [0002] The electroplating industry is an important industry in our country. Electroplating products can be applied in many industries. To meet market demand, many electroplating plants are busy increasing production while neglecting the harm to the environment caused by wastewater generated in the electroplating process. . With the implementation of macroeconomic policies for sustainable development, continuous economic growth and lack of water resources, which have led to the continuous increase of water prices, electroplating companies need to seek a plating wastewater treatment technology that meets the requirements of national environmental protection policies to achieve Reuse of electroplating wastewater. [0003] At present, electroplating wastewater treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/16C02F101/20C02F101/18
CPCC02F9/00C02F1/5245C02F1/56C02F1/441C02F1/70C02F1/04C02F2103/16C02F2101/18C02F2101/20C02F2201/007C02F2301/08
Inventor 胡君杰周耀水夏俊方方小琴韩粒肖龙博陆魁
Owner SHANGHAI JINGYU ENVIRONMENT ENG
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