Removal of nitrate and/or organic pollutants from effluents
US5015456A · kind A · utility
6Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A continuous process for the removal of at least one of nitrate and organic contaminants from an aqueous effluent, which process comprises subjecting said effluent to extractive liquid ion-exchange with a long-chain alkylamine dissolved in an organic solvent and present in salt form, and reextracting the loaded organic phase with a base, the treated effluent being recycled for reuse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.