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Correlating microbial community compositions with environmental factors in activated sludge from four full-scale municipal wastewater treatment plants in Shanghai, China
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Correlating microbial community compositions with environmental factors in activated sludge from four full-scale municipal wastewater treatment plants in Shanghai, China
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Journal Article
Correlating microbial community compositions with environmental factors in activated sludge from four full-scale municipal wastewater treatment plants in Shanghai, China
2016
Overview
Activated sludge system is an important process of domestic and industrial wastewater treatment containing highly diverse microbial communities. In this study, high-throughput sequencing was applied to examine the microbial community composition and diversity of activated sludge samples from four full-scale municipal wastewater treatment plants (WWTPs) in Shanghai. A relationship between microbial communities and environmental variables was examined.
Proteobacteria
was the most dominant phylogenetic group, followed by
Bacteroidetes
and
Firmicutes
. A total of 166 genera were commonly shared by all seven sludge samples, including
Zoogloea
,
Dechloromonas
,
Thauera
,
Nitrospira
,
Arcobacter
, etc. Besides these shared populations, certain unique bacterial populations were found abundant in individual sludge sample. Canonical correspondence analysis (CCA) indicated that influent COD and pH had the greatest influence on microbial community compositions, whereas dissolved oxygen (DO) exhibited the least influence. The operating process was likely to foster diversity of the microbial communities inhabiting the wastewater treatment facilities. Alternative operation methods including a fluctuation of anoxic, oxic, and anaerobic conditions were favorable for promoting the growth of diverse microbial populations in activated sludge systems.
Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
Subject
/ Analysis
/ Bacteria
/ Bacteroidetes - classification
/ Biodegradation, Environmental
/ Biological Oxygen Demand Analysis
/ Biomass
/ Biomedical and Life Sciences
/ China
/ high-throughput nucleotide sequencing
/ Industrial wastewater treatment
/ Microbial Genetics and Genomics
/ Proteobacteria - classification
/ Sludge
/ Studies
/ Taxonomy
/ Thauera
/ Zoogloea
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