Submerged fixed film anoxic bioreactor
US7731842B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Apr 21, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/903
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A constant velocity serpentine anoxic reactor incorporates a multiple cell vertical serpentine path, as well as a horizontal serpentine path, through the anoxic chamber. A fixed film media is mounted within each cell of the anoxic chamber to provide a structure on which the bacteria can grow to sustain the biological reaction, which convert nitrates into nitrogen gas. The fixed film media can be a cross-flow media and can optionally include a web of textile material integrated within the fixed film media to enhance bacterial growth within the fixed film media or optionally the anoxic vertical serpentine configuration could be applied to an activated sludge operation. A nitrate recycle pump recycles about 75% of the effluent from the aerobic chamber back into the anoxic chamber to provide a nitrate source for the digestion of the BOD within the influent wastewater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.