Regulating air velocity continuously injected into...

Details Regulating air velocity continuously injected into... Regulating air velocity continuously injected into...

2005-05-27

2008-08-05

Barry, Chester T (Department: 1797)

Liquid purification or separation

Processes

Treatment by living organism

C210S620000, C210S220000, C210S150000, C210S739000

Reexamination Certificate

active

07407584

ABSTRACT:
A method of treating wastewater wherein the biomass associated with the wastewater is subjected to simultaneous nitrification and denitrification in a single reactor. The method entails directing a wastewater influent stream into the reactor and measuring the concentration of N—NH4in the influent wastewater stream at a point upstream from the reactor. Air is supplied to the reactor for aerating the biomass in the reactor. The method includes controlling the quantity of air introduced into the reactor based in part at least on the measured concentration of N—NH4.

REFERENCES:
patent: 5989428 (1999-11-01), Goronszy
patent: 6036862 (2000-03-01), Stover
patent: 7329352 (2008-02-01), Tokutomi
patent: 7332093 (2008-02-01), Rosen et al.
patent: WO99/24370 (1999-05-01), None
patent: WO01/02158 (2001-04-01), None
Hansen, Joachim; “Fuzzy Controls for the Optimization of Nutrients Removal in Municipal Sewage Treatment Plants,” No. XP-000803516, Korrespondenz Abwasser 1998(45) Nr. 12, pp. 2259-2268.

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