07018530 is referenced by 54 patents and cites 2 patents.

In a vertical shaft bioreactor, improved devices and methods are provided for enhanced secondary and/or tertiary treatment of wastewater, including residential, municipal and industrial wastewater. The devices and methods of the invention are useful for enhanced secondary wastewater treatment, including BOD and TSS removal. Tertiary treatment can alternately or additionally be achieved in the bioreactor with nitrification of ammonia, with nitrification and denitrification, and with nitrification, denitrification, and chemical phosphorus removal. A vertical shaft bioreactor is also provided which achieves thermophilic aerobic digestion and pasteurization of sewage sludges, optionally to produce class A biosolids.

Apparatus for biological treatment of waste waters
Application Number
Publication Number
7018530 (B2)
Application Date
May 17, 2004
Publication Date
March 28, 2006
David C Pollock
Calgary, Alberta, T2J 5A2
C02F 3/00
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