Method for reducing sludge of a biological ozone treatment system
US7335304B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 2, 2003 |
| Grant date | Feb 26, 2008 |
| Priority date | — |
| Expiry date | Oct 2, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Methods for treating aqueous effluent, which include reducing sludge formation during the biological treatment of an aqueous effluent. The sludge formation is reduced by injecting an ozone containing gas into an aeration tank which contains the effluent. The affluent is in contact with microorganisms in the tank at least once during the method. The ozone containing gas contains at least 2.5 mg of ozone per liter of the gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.