Metagenomic insights into microbial nitrogen metabolism in two-stage anoxic/oxic-moving bed biofilm reactor system with multiple chambers for municipal wastewater treatment
Bioresource Technology(2022)
Abstract
•Metagenomic analysis revealed microbial nitrogen metabolism of two-stage A/O-MBBR.•Genes for nitrification and denitrification were enriched in oxic and anoxic MBBRs.•Microbial populations were different in pre-anoxic, oxic and post-anoxic MBBRs.•Nitrospira and Nitrosomonas were predominant in oxic MBBRs.•Dominant denitrifying genera were different in pre- and post-anoxic MBBRs.
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Key words
Biological nitrogen removal,Nitrification,Denitrification,Biological process
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