发明授权
- 专利标题： Reduction of the phosphate content in waste water from the preparation of metal salts of ascorbic acid 2-monophosphate
- 专利标题（中）： 从制备抗坏血酸2-单磷酸的金属盐中减少废水中的磷酸盐含量
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申请号： US126881申请日： 1993-09-27
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公开(公告)号： US5582739A公开(公告)日： 1996-12-10
- 发明人: Klaus Kaiser , Joachim Paust
- 申请人： Klaus Kaiser , Joachim Paust
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX4232997.3 19921001
- 主分类号： C07D307/62
- IPC分类号： C07D307/62 ; C02F1/52 ; C02F1/58 ; C07F9/655
摘要：
A process for reducing the phosphate content in waste water from the preparation of salts of ascorbic acid 2-monophosphate comprisesA. treating the waste water from the crystallization of the metal salts of ascorbic acid 2-monophosphate with an alkali metal or alkaline earth metal hypochlorite, chlorine or H.sub.2 O.sub.2,andB. precipitating, at a pH of 9-12, the inorganic phosphate which has been produced from organically bound phosphorus and/or was present in the waste water, especially as calcium phosphate.
公开/授权文献
- US4842519A Intraoral appliance and method of treating patient 公开/授权日：1989-06-27
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