发明授权
- 专利标题: Detection and removal of copper from wastewater streams from semiconductor and printed circuit board processing
- 专利标题(中): 从半导体和印刷电路板处理的废水流中检测和去除铜
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申请号: US114740申请日: 1998-07-13
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公开(公告)号: US6140130A公开(公告)日: 2000-10-31
- 发明人: Kristine S. Salmen , Angela S. Kowalski , Brian V. Jenkins , John E. Hoots
- 申请人: Kristine S. Salmen , Angela S. Kowalski , Brian V. Jenkins , John E. Hoots
- 申请人地址: IL Naperville
- 专利权人: Nalco Chemical Company
- 当前专利权人: Nalco Chemical Company
- 当前专利权人地址: IL Naperville
- 主分类号: C02F1/42
- IPC分类号: C02F1/42 ; C02F1/62 ; G01N21/64
摘要:
A system and method for the detection and removal of copper from wastewater streams from semiconductor or printed circuit board manufacturing is described and claimed. The detection system and method involve the addition of a reagent that reacts with copper to quench the fluorophore present, with the decrease in fluorescence being detected by a fluorometer. The reduction of fluorescence is then used to calculate the amount of copper present in the form of Cu+2 ion in the wastewater. The removal system and method involve either the addition of a polymer that reacts with copper to form an insoluble precipitate with said precipitate then being removed by using any technique commonly known in the art; or the use of an ion exchange column to remove the copper from the wastewater stream.
公开/授权文献
- US4274605A Reel technology 公开/授权日:1981-06-23
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