Author/Editor		Jurkovič, J; Janežič, L; Glancer, M; Šoljan, V; Toman, MJ
Title		Nitrogen removal from ammonium rich wastewater by nitrification and dentrification using an activated sludge
Type		članek
Source		In: Proceedings of the 8th IAWQ conference on design, operation and economics of large wastewater treatment plants; 1999 Sep 6-9; Budapest. Budapest: Budapest university of tehnology, Department of sanitary and enviromental engineering,
Publication year		1999
Volume		str. 472-5
Language		eng
Abstract		Nitrogen removal from higly loaded wastewater was investigated. An activated sludge of several bacterial strains showing high nitrification activity was used in the experiments. The continuous nitrification/denitriifcation rate in a bench scale reactor was 59 g Nkg/ biomass d-1 with the addition of methanol , and 55 gN/kg biomass d-1 with the additon of sodium acetate. The acivated sludge also reduced the COD by more than 90%. The results show that methanol could be an appropriate carbon source with the peak activity achived at ratio C:N = 2. The high nitrification rate and the low C:N ratio and the use of methanol as the carbon source make the process economically interesting.
Descriptors		SEWAGE AMMONIA WATER PURIFICATION NITROGEN BACTERIA BIOMASS SWINE ANIMAL HUSBANDRY ALCOHOL, METHYL SODIUM ACETATE NITROSOMONAS FLAVOBACTERIUM PSEUDOMONAS