Method for treating an effluent using simultaneous nitrification/denitrification in a biological filter
US6632365B1 · kind B1 · utility
11Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Aug 15, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention concerns a method and installation for the treatment of excess sludge derived from biological wastewater treatment plants. The method is characterized in that it consists of associating at least one digestion step (4) and at least one wet oxidation step (2) of said sludge, said wet oxidation step being conducted at a temperature of between 50° C. and 180° C. and at a pressure of between 2 and 40 bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.