Journal article

Fluorescence in situ hybridization analysis of nitrifiers in piggery wastewater treatment reactors

DJ Kim, TK Kim, EJ Choi, WC Park, TH Kim, DH Ahn, Z Yuan, L Blackall, J Keller

WATER SCIENCE AND TECHNOLOGY | IWA PUBLISHING | Published : 2004

Abstract

Fluorescence in situ hybridization (FISH) was performed to analyze the nitrifying microbial communities in an activated sludge reactor (ASR) and a fixed biofilm reactor (FBR) for piggery wastewater treatment. Heterotrophic oxidation and nitrification were occurring simultaneously in the ASR and the COD and nitrification efficiencies depend on the loads. In the FBR nitrification efficiency also depends on ammonium load to the reactor and nitrite was accumulated when free ammonia concentration was higher than 0.2 mg NH3-N/L. FISH analysis showed that ammonia-oxidizing bacteria (NSO1225) and denitrifying bacteria (RRP1088) were less abundant than other bacteria (EUB338) in ASR. Further analysis..

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University of Melbourne Researchers