Method and device for anaerobic purification of waste water using the UASB method
US6478963B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Dec 27, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F3/2846
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Described is a method and a device for purifying waste water, in particular by means of anaerobic purification. The method is carried out in a waste water- and sludge-receiving container under generation of gas, the developing gas being trapped by a gas collector and the circulation formed by the ascending gas being used for loosening the sludge which has settled on the bottom of the container. Such a method is to be developed in a constructionally simple and more efficient way. To this end the settled sludge should be sucked from the bottom by a gas lifting effect provided by the ascending gas, and should be passed into the upper portion of the container in a condition separated from the waster water in the container, and returned into the waste water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.