发明授权
- 专利标题: Process for treating a waste liquid of hydrosulfite
- 专利标题(中): 处理废水液体的方法
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申请号: US496090申请日: 1974-08-09
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公开(公告)号: US3962073A公开(公告)日: 1976-06-08
- 发明人: Yoshio Yoshikawa , Sadao Otsuka , Akira Amemiya , Toshio Komatsu
- 申请人: Yoshio Yoshikawa , Sadao Otsuka , Akira Amemiya , Toshio Komatsu
- 申请人地址: JA Tokyo
- 专利权人: Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人: Mitsubishi Gas Chemical Company, Inc.
- 当前专利权人地址: JA Tokyo
- 优先权: JA48-91435 19730815
- 主分类号: C02F1/74
- IPC分类号: C02F1/74 ; C02F1/52 ; C02F1/72 ; C02F3/12 ; C02F3/34 ; C02C1/06
摘要:
A process for treating a waste liquor from a hydrosulfite process by an activated sludge process is improved by aerating the waste in the presence of a metal ion before the activated sludge process.