发明授权
US5976401A Agent for removing phosphates, nitrates and nitrites from wastewater
失效
用于从废水中去除磷酸盐，硝酸盐和亚硝酸盐的剂
- 专利标题： Agent for removing phosphates, nitrates and nitrites from wastewater
- 专利标题（中）： 用于从废水中去除磷酸盐，硝酸盐和亚硝酸盐的剂
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申请号： US907308申请日： 1997-08-06
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公开(公告)号： US5976401A公开(公告)日： 1999-11-02
- 发明人: Takashi Suzuki , Toshio Sato , Akira Ookubo , Tomohide Koizumi , Mikiko Mihara , Shoichi Oonishi
- 申请人： Takashi Suzuki , Toshio Sato , Akira Ookubo , Tomohide Koizumi , Mikiko Mihara , Shoichi Oonishi
- 申请人地址： JPX Tokushima-Ken
- 专利权人： Tomita Pharmaceutical Co., Ltd.
- 当前专利权人： Tomita Pharmaceutical Co., Ltd.
- 当前专利权人地址： JPX Tokushima-Ken
- 优先权： JPX8-208079 19960807; JPX8-298999 19961111
- 主分类号： C02F1/28
- IPC分类号： C02F1/28 ; C02F1/52 ; C02F1/58 ; C02F1/64 ; C02F1/66 ; C02F1/68 ; C02F1/42 ; C02F5/08 ; C09K3/00
摘要：
A method for treating phosphate-containing waste water comprising treating phosphate-containing waste water with a metal hydroxide complex as a phosphate adsorbent represented by the formula:M.sub.1-x.sup.2+ M.sub.x.sup.3+ (OH.sup.-).sub.2+x-y (A.sup.n-).sub.y/nwherein M.sup.2+ is at least one divalent metal ion selected from the group consisting of Mg.sup.2+, Ni.sup.2+, Zn.sup.2+, Fe.sup.2+, Ca.sup.2+ and Cu.sup.2+ ; M.sup.3+ is at least one divalent metal ion selected from the group consisting of Al.sup.3+ and Fe.sup.3+ ; A.sup.n- is an n-valent anion; x is in the range 0.1.ltoreq.x.ltoreq.0.5; y is in the range 0.1.ltoreq.y.ltoreq.0.5; and n is 1 or 2.
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