Method and device for purifying waste water comprising an additional sludge treatment by ozonation
USRE40565E1 · kind E1 · reissue
2Cited by
2References
14Claims
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Key dates
| Filing date | Apr 14, 2000 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Apr 14, 2020 |
Classification
- Technology area (CPC —)General
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.