Process for removing organic substances and nitrogen compounds from waste water
US4183809A · kind A · utility
47Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Feb 27, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/903
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An improved process for the removal of organic substances and nitrogen compounds from waste water by means of micro-organisms, wherein waste water to be treated is passed continuously through a denitrification zone, effluent from the denitrification zone is passed into a nitrification zone, and at least a portion of the effluent from the nitrification zone is recycled back to the denitrification zone. A portion of the waste water to be treated is fed directly into the nitrification zone as well as to the denitrification zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.