Process for reabsorption and retention of phosphorous by activated biomass
US4257897A · kind A · utility
8Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Oct 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/906
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for promoting the reabsorption and retention by an activated biomass of phosphorous values previously contained by the biomass and released under anaerobic conditions, which process requires initially subjecting the biomass in admixture with a liquid medium to treatment under aerobic conditions employing a relatively high DO. When the pH of the mixture stops increasing, the aerobic treatment is continued but under a second, reduced DO level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.