Invention Grant
- Patent Title: Electroplating waste water treatment method
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Application No.: US14412218Application Date: 2013-03-27
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Publication No.: US09708202B2Publication Date: 2017-07-18
- Inventor: Aimin Li , Lichun Fu , Fuqiang Liu , Qing Zhou , Jianjun Dai , Zhaoyang Lu , Yan Li , Chendong Shuang , Jinnan Wang , Weiwei Zhao
- Applicant: Nanjing University , Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
- Applicant Address: CN Nanjing, Jiangsu CN Yancheng, Jiangsu
- Assignee: NANJING UNIVERSITY,NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INSTITUTE
- Current Assignee: NANJING UNIVERSITY,NANJING UNIVERSITY YANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY AND ENGINEERING RESEARCH INSTITUTE
- Current Assignee Address: CN Nanjing, Jiangsu CN Yancheng, Jiangsu
- Agency: Novick, Kim & Lee, PLLC
- Agent Allen Xue
- Priority: CN201210130587 20120428
- International Application: PCT/CN2013/073277 WO 20130327
- International Announcement: WO2013/159624 WO 20131031
- Main IPC: C02F9/00
- IPC: C02F9/00 ; C02F1/461 ; C02F1/28 ; C02F1/42 ; C02F1/52 ; C02F3/06 ; C02F101/20 ; C02F101/22 ; C02F103/16

Abstract:
An efficient combined advanced treatment method of electroplating wastewater is disclosed, which belongs to the technical field of electroplating wastewater treatment. The method includes: after pretreatments including cyanide breaking, dechromization and coagulating sedimentation, introducing the electroplating wastewater to a contact oxidation tank for biochemical treatment, and settling the effluent from the contact oxidation tank down in an inclined pipe of a secondary sedimentation tank to realize the separation of the sludge from water; charging the effluent to a coagulating sedimentation tank, and undergoing coagulating sedimentation with the aid of a flocculant and a coagulant aid added; feeding the effluent, as an influent, to a resin adsorption tank for adsorption with a magnetic resin; and after passing through a filter, flowing the effluent after adsorption to a fixed bed resin adsorption unit, so as to realize the discharge up to standard and recycle of the effluent.
Public/Granted literature
- US20150291449A1 EFFICIENT COMBINED ADVANCED TREATMENT METHOD OF ELECTROPLATING WASTE WATER Public/Granted day:2015-10-15
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