发明授权
- 专利标题： Wastewater treating agent, method for wastewater treatment, sludge dehydrant and method for sludge treatment
- 专利标题（中）： 污水处理剂，废水处理方法，污泥脱水剂及污泥处理方法
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申请号： US09367799申请日： 2000-01-07
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公开(公告)号： US06573336B1公开(公告)日： 2003-06-03
- 发明人: Yasuhito Inagaki , Haruo Watanabe , Shigeo Kiuchi , Takaaki Kano
- 申请人： Yasuhito Inagaki , Haruo Watanabe , Shigeo Kiuchi , Takaaki Kano
- 优先权： JP9-351719 19971219; JP10-163844 19980611
- 主分类号： C08F836
- IPC分类号： C08F836
摘要：
Sulfonated styrene polymer and/or its salt, a waste water treatment material and sludge dehydrating agent each containing the sulfonated styrene polymer and/or its salt as an effective component thereof are disclosed. The waste water treatment material is used such that the sulfonated styrene polymer and/or its salt, which has a viscosity of 10 mPa·S to 20,000 mPa·S at 25° C. after 0.01 N to 5 N of a neutral salt has been added to the 1 wt % water solution of the sulfonated styrene polymer and/or its salt, is added to each waste water so that waste water is purified. When a sludge dehydrating agent is required, the sulfonated styrene polymer and/or its salt having a weight average molecular weight of 1,100,000 or greater is combined with a cation polymer flocculating agent or an inorganic flocculating agent.
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