Process for the purification of waste waters containing organic and inorganic sulphur compounds
US6045696A · kind A · utility
0Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/909
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
This invention relates to a process for the purification of waste waters containing organic and, should the situation arise, inorganic sulphur compounds, which waste waters contain a proportion of mercaptobenzothiazole and/or derivatives thereof and, should the situation arise, a proportion of benzothiazole and/or derivatives thereof and/or mercaptobenzimidazole and/or derivatives thereof and, should the situation arise, thiosulphate, whereby the waste waters are treated with an extracting agent comprising salts of aliphatic amines and aliphatic and/or aromatic hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.