Kim, DJ Kim, TK Choi, EJ Park, WC Kim, TH Ahn, DH Yuan, Z Blackall, L Keller, J 2024-01-21T07:07:10Z 2024-01-21T07:07:10Z 2021-09-03 2004-05 0273-1223 https://pubs.kist.re.kr/handle/201004/137611 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 on nitrifying bacteria in the FBR showed that Nitrosomonas species (NSM156) and Nitrospira species (NSR1156) were the dominant ammonia-oxidizing and nitrite-oxidizing bacteria, respectively, in the piggery wastewater nitrification system. English IWA PUBLISHING ACTIVATED-SLUDGE NITRIFYING BACTERIA BIOFILM CARBON TIME Fluorescence in situ hybridization analysis of nitrifiers in piggery wastewater treatment reactors Article 10.2166/wst.2004.0772 1 WATER SCIENCE AND TECHNOLOGY, v.49, no.5-6, pp.333 - 340 WATER SCIENCE AND TECHNOLOGY 49 5-6 333 340 scie scopus 000221464200044 2-s2.0-2442580786 Engineering, Environmental Environmental Sciences Water Resources Engineering Environmental Sciences & Ecology Water Resources Article; Proceedings Paper ACTIVATED-SLUDGE NITRIFYING BACTERIA BIOFILM CARBON TIME ammonia-oxidizer FISH nitrification nitrite-oxidizer piggery wastewater