发明申请
- 专利标题: Preparation of waste water containing sodium chloride for use in chlor-alkali electrolysis
- 专利标题(中): 制备含氯化钠的废水用于氯碱电解
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申请号: US10505196申请日: 2003-02-10
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公开(公告)号: US20050115901A1公开(公告)日: 2005-06-02
- 发明人: Juergen Heuser , Werner Verhoeven , Domien Sluyts
- 申请人: Juergen Heuser , Werner Verhoeven , Domien Sluyts
- 优先权: DE10207442.9 20020222
- 国际申请: PCT/EP03/01282 WO 20030210
- 主分类号: B01D19/00
- IPC分类号: B01D19/00 ; C01D3/06 ; C01D3/18 ; C02F1/20 ; C02F1/26 ; C02F1/66 ; C02F9/00 ; B01D11/00
摘要:
The present invention relates to a process for the treatment of waste waters containing common salt, characterised in that, by a specific sequence of acidification, extraction, alkalisation and stripping steps, an aqueous common salt solution is obtained, which can be used directly in chlor-alkali electrolysis.