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Changes of microbial characteristics in a full-scale submerged membrane bioreactor system (capacity, 60,000 m3 day−1) treating sewage were monitored over the start-up period (96 days). Fluorescence in situ hybridization analysis showed that the percentages of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (nitrobacter-related population) in total bacteria counted with DAPI staining...
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