Reactor for the biological treatment of sewage
US5196111A · kind A · utility
13Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/903
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Improved reactor for the biological treatment of sewage, intended to replace the aeration tank in plants comprising an anaerobic tank in which denitrification takes place, an anaeration tank where the nitrification of the effluents by aerobic bacteria is carried out and a final clarifier, which comprises a single tank having three separate zones which are, in the order in which the liquid to be treated passes through them successively: PA0 an aeration operating with plug flow; PA0 an anaerobic zone; and PA0 a completely mixed zone comprising means permitting it to operate under adjustable aeration conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.