Method and device for purifying waste water comprising an additional sludge treatment by ozonation
US6337020B1 · kind B1 · utility
5Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Method for purifying waste water, whereby the waste water is subjected to a biological treatment producing sludge, part of this sludge being recycled towards the biological treatment while being subjected to ozonation combined with mechanical stirring. A mechanical stirring energy is brought in to attack the walls of the microorganisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.