Process for the biological purification of a water containing ammonium perchlorate
US6328891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Dec 13, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention relates to a process for the biological purification of a water containing ammonium perchlorate, characterized in that PA1 aqueous ammonium perchlorate solution is placed in contact, in a first, aerobic reactor, with an activated sludge in the presence of at least one source of mineral carbon and nutritional elements for the metabolism of the microorganisms, PA1 and then in that the liquid effluent leaving the first reactor is placed in contact, in a second, anoxic reactor, with an activated sludge, in the presence of at least one source of organic carbon and nutritional elements for the metabolism of the microorganisms. The process makes it possible to treat aqueous solutions containing very large amounts of ammonium perchlorate and to convert both the ammonium ions into molecular nitrogen and the perchlorate ions into chloride ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.