Treatment of waste water
US4141823A · kind A · utility
10Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1976 |
| Grant date | Feb 27, 1979 |
| Priority date | — |
| Expiry date | Aug 3, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for treating aqueous waste material having a biochemical oxygen demand, which process comprises passing the aqueous waste material along an elongate treatment tank or other elongate container for containing a volume of such material, having a transverse support structure or structures extending along the length of the tank or container and supporting aerobic micro-organisms, and dissolving an oxygenating gas in aqueous waste material at a plurality of positions spaced along the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.