Kavitha, Ramachandran; Dr.Bright Singh,I S(Cochin University of Science And Technology, March , 1998)
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Abstract:
Nitrification is the biological oxidation of ammonium, first to nitrite and
then to nitrate by two groups of aerobic, chemolithotrophic bacteria belonging
to the family Nitrobacteriaceae. The biological nitrification in municipal
wastewater treatment is important in those cases were ammonia removal requirement
specially exist. In a trickling filter or in an activated sludge system
nitrification is rate limiting and thus necessitates longer detention time.
The combined carbon oxidation-nitrification processes generally have low
population of nitrifiers due to a high ratio of BOD to total nitrogen in the
effluent. This necessitates, separate carbon and nitrogen oxidation processes,
which thus minimizes wash out ofthe nitrifiers. Therefore, a separate stage
nitrification has become essential to achieve faster and efficient removal of
ammonia from the wastewater. The present work deals with the development
of bio reactor for nitrifying of sewage as the tertiary process so that the
treated wastewater can be used for irrigation, algal culture or fish culture
Description:
School of environmental studies, Cochin University of Science And Technology