发明授权
- 专利标题： Process for treating an acidic waste water stream
- 专利标题（中）： 处理酸性废水流的方法
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申请号： US596708申请日： 1975-07-17
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公开(公告)号： US4035293A公开(公告)日： 1977-07-12
- 发明人: Antoine Benoit , Sylvain A. R. Dewaele , Andre Verhelst
- 申请人： Antoine Benoit , Sylvain A. R. Dewaele , Andre Verhelst
- 申请人地址： BE Brussels
- 专利权人： S.A. Texaco Belgium N.V.
- 当前专利权人： S.A. Texaco Belgium N.V.
- 当前专利权人地址： BE Brussels
- 主分类号： C01B25/32
- IPC分类号： C01B25/32 ; C02F1/02 ; C02F1/52 ; C02B1/20
摘要：
Disclosed is a process for purifying an effluent containing acids such as phosphonic and phosphoric acids by the addition of CaO or Ca(OH).sub.2 in an amount ranging from 55-93 per cent by weight basis acids at a temperature of 35.degree. to 100.degree. C to a pH of 8 to 12. After removing the precipitated material, the effluent can be neutralized with CO.sub.2 gas. The precipitate can be calcined to tri calcium phosphate.
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