发明授权
- 专利标题： Method of treating silicon powder-containing drainage water
- 专利标题（中）： 含硅粉末排水的处理方法
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申请号： US11990758申请日： 2006-08-17
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公开(公告)号： US07988867B2公开(公告)日： 2011-08-02
- 发明人: Shinji Tokunaga , Yoshiaki Koga , Toshihiko Inoue
- 申请人： Shinji Tokunaga , Yoshiaki Koga , Toshihiko Inoue
- 申请人地址： JP Shunan-Shi
- 专利权人： Tokuyama Corporation
- 当前专利权人： Tokuyama Corporation
- 当前专利权人地址： JP Shunan-Shi
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2005-243161 20050824; JP2005-361388 20051215
- 国际申请： PCT/JP2006/316535 WO 20060817
- 国际公布： WO2007/023872 WO 20070301
- 主分类号： C02F1/56
- IPC分类号： C02F1/56
摘要：
A method of treating silicon powder-containing drainage water, comprising the steps of: including an inorganic flocculant composed of a silica sol-water-soluble metal salt having a molar ratio of silicon to metal of 0.05 to 3.0 into drainage water containing silicon powders to ensure that the metal concentration becomes 15 to 300 mg/L; and adding an organic polymer flocculant. In this method, the coagulation treatment of drainage water containing fine silicon powders can be carried out.
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