Peer-Reviewed Journal Details
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Wu, G., Rodgers, M. and Zhan, X.
2008
June
Biochemical Engineering Journal
Nitrification in sequencing batch reactors with and without glucose addition at 11o C
Published
()
Optional Fields
ammonia oxidizing bacteria fluorescence in situ hybridization glucose heterotrophs nitrification IN-SITU HYBRIDIZATION AMMONIA-OXIDIZING BACTERIA NITRIFYING BACTERIA ACTIVATED-SLUDGE HETEROTROPHIC BACTERIA POPULATION-STRUCTURE RETENTION TIME BIOFILMS NITRIFIERS DYNAMICS
40
373
378
Nitrification was investigated in two laboratory-scale sequencing batch reactors (SBRs) at 11 degrees C, one with glucose addition (G-Reactor) and the other without (N-Reactor). The characteristics of nitrification and the distribution of ammonia oxidizing bacteria (AOB) within activated sludge floes in the two reactors were examined. A high specific nitrification rate existed in the N-Reactor, while a high volumetric nitrification rate existed in the G-Reactor. The proportion of AOB enriched in the N-Reactor was about three times that in the G-Reactor. The activated sludge floes in the N-Reactor had a larger floc size and a higher biomass density than in the G-Reactor. AOB were mainly in a form of clusters in the activated sludge floes in the N-Reactor, but were well dispersed throughout the floes in the G-Reactor. (C) 2008 Elsevier B.V. All rights reserved.
DOI 10.1016/j.bej.2008.01.010
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