Process for treating a waste liquid of hydrosulfite
US3962073A · kind A · utility
4Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Aug 9, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.