Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2007-11-20
2007-11-20
Barry, Chester T. (Department: 1724)
Liquid purification or separation
Processes
Treatment by living organism
C210S611000, C210S615000, C210S631000
Reexamination Certificate
active
11171417
ABSTRACT:
Raw water containing ammonium-nitrogen is introduced into a nitrification tank and nitrification of nitrite-nitrogen by nitrite oxidizing bacteria is inhibited according to inhibition of the ammonium-nitrogen, thereby conducting stable nitrification of nitrous acid type at a high load by the action of ammonium oxidizing bacteria. Carbonate and/or bicarbonate are added into the nitrification tank1.The inorganic carbon concentration in the nitrification tank1is maintained at 35 mg-C/L or more. The nitrified liquid thus obtained is introduced into a denitrification tank and denitrification reaction is conducted by the action of denitrifying bacteria with the remaining ammonium-nitrogen as an electron donor and the nitrite-nitrogen as an electron acceptor.
REFERENCES:
patent: 0 826 639 (1998-03-01), None
patent: 2-198696 (1990-08-01), None
patent: H04-122498 (1992-04-01), None
patent: 2000-61494 (2000-02-01), None
patent: 2001-37467 (2001-02-01), None
Green et al; “Nitrification utilizing CaCo3as the buffering agent”; Environmental Technology, vol. 23, p. 303-308, 2002.
Byong-Hee Jun et al; “Stimulating Accumulation of Nitrifying Bacteria in Porous Carrier by Addition of Inorganic Carbon in a Continuous-Flow Fluidized Bed Wastewater Treatment Reactor” Journal of Bioscience and Bioengineering, vol. 89, No. 4, p. 334-339, 2000.
Orita Nobuhiro
Tokutomi Takaaki
Yamauchi Hideyo
Barry Chester T.
Kanesaka Manabu
Kurita Water Industries Ltd.
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