发明授权
- 专利标题： Treatment of water to remove certain ions therefrom
- 专利标题（中）： 处理水以从中除去某些离子
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申请号： US770826申请日： 1977-02-22
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公开(公告)号： US4059513A公开(公告)日： 1977-11-22
- 发明人: Karel V. Zadera
- 申请人： Karel V. Zadera
- 专利权人： Zadera Karel V
- 当前专利权人： Zadera Karel V
- 主分类号： C02F1/66
- IPC分类号： C02F1/66 ; C02F5/02 ; C02B1/20 ; B01D21/01 ; C02B5/02 ; C02C5/02
摘要：
High sulfate content water is treated in a multistage process to remove sulfate and hardness. Sulfate concentration is reduced in the first stage of the process by addition of calcium hydroxide. Calcium concentration is reduced in the second stage of the process by reaction of carbon dioxide or bicarbonate and calcium and hydroxide ions from the first stage of the process, forming insoluble calcium carbonate.
公开/授权文献
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