Method of improving the SVI of mixed liquor in aeration tank
US4452699A · kind A · utility
21Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Apr 28, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
In the treatment of wastewater by the activated sludge process, mixed liquor in the aeration tank or settled sludge is drawn from the system and concentrated. The concentrated sludge is returned to the aeration tank either immediately or after being mixed with separated water and settled sludge to thereby reduce the SVI of the mixed liquor in the aeration tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.