Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshihiko Inoue0
Yoshiaki Koga0
Shinji Tokunaga0
Date of Patent
August 2, 2011
0Patent Application Number
119907580
Date Filed
August 17, 2006
0Patent Primary Examiner
Patent abstract
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; andadding an organic polymer flocculant.
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