Transition of microbial community structures after development of membrane fouling in membrane bioreactors (MBRs).

ABSTRACT: Although membrane fouling is a major issue when operating membrane bioreactors (MBRs), information regarding MBR performance and the sludge microbiome after the development of fouling remains limited. For the present study, two MBRs were operated for approximately 1 month under conditions of membrane fouling to investigate the effects of highly stressed environments on the sludge microbiome. After the development of fouling, a Collimonas-related operational taxonomic unit (OTU) was highly dominant in both reactors (relative abundances were ⁓ 63%) and this predomination caused a precipitous decline in the diversity indices of the sludge microbiomes. Because the excessive predomination by limited numbers of OTUs can lead to reductions in the adaptability to environmental changes, monitoring

SUBMITTER: Sato Y 

PROVIDER: S-EPMC6987300 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature