Submerged fixed film anoxic bioreactor

Details Submerged fixed film anoxic bioreactor Submerged fixed film anoxic bioreactor

2007-09-19

2010-06-08

Prince, Fred (Department: 1797)

Liquid purification or separation

With gas-liquid surface contact means

With separator

C210S220000, C210S259000, C210S903000

Reexamination Certificate

active

07731842

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.

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patent: 5733455 (1998-03-01), Molof et al.
patent: 6054044 (2000-04-01), Hoffland et al.

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