Method and apparatus for biological aerobic wastewater treatment
US4614589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 12, 1985 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Feb 12, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/926
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for biological aerobic treatment of wastewater wherein oxygen is induced into a mixed liquor flow path and a method and apparatus for separating the liquid withdrawn from the mixed liquor flow path into a clear liquid stream and a flock laden stream. A streaming specific gravity separator of unique construction and operation separates the mixed liquor into a clear liquid stream and a flock laden stream, withdrawing the clear liquid stream from the system and directing the flock laden stream back into the mixed liquor flow path. The separator functions within the system to be self-controlling for load increases or decreases. In accordance with preferred embodiments of the system, the separator may be positioned inside or outside of an oxidation ditch. The separator may also be utilized in combination with an aeration basin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.