Apparatus and methods for purifying a waste influent material
US6620322B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2001/007
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Apparatus can comprise an anoxic zone, an aeration zone in communication with the anoxic zone, and a sedimentation zone in communication with the aeration and anoxic zones. The sedimentation zone may include a first outlet in a lower portion thereof adapted to recycle material. A device may be provided to control the flow rate of the recycle material. Another device may be positioned relative to a sedimentation zone inlet and adapted to manipulate a material flow profile as material travels into the sedimentation zone. A sedimentation zone may also define an inlet comprising an overlapped area. Methods for purifying a waste inlet material comprise the steps of providing an anoxic zone, an aeration zone and a sedimentation zone. The methods may comprise the step of recycling material from a first outlet in a lower portion of the sedimentation zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.