Roles of Phosphorus Sources in Microbial Community Assembly for the Removal of Organic Matters and Ammonia in Activated Sludge

Various phosphorus sources are utilized by microbes in WWTPs, eventually affecting microbial assembly and functions. This study identified the effects of phosphorus source on microbial communities and functions in the activated sludge. By cultivation with 59 phosphorus sources, including inorganic p...

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Published inFrontiers in microbiology Vol. 10; p. 1023
Main Authors Zheng, Lei, Ren, Mengli, Xie, En, Ding, Aizhong, Liu, Yan, Deng, Songqiang, Zhang, Dayi
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 16.05.2019
Subjects
activated sludge
AKP-associated gene
alkaline phosphatase
microbial community structure
Microbiology
phosphorus
alkaline phosphatase
microbial community structure
activated sludge
AKP-associated gene
phosphorus
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Summary:Various phosphorus sources are utilized by microbes in WWTPs, eventually affecting microbial assembly and functions. This study identified the effects of phosphorus source on microbial communities and functions in the activated sludge. By cultivation with 59 phosphorus sources, including inorganic phosphates (IP), nucleoside-monophosphates (NMP), cyclic-nucleoside-monophosphates (cNMP), and other organophosphates (OP), we evaluated the change in removal efficiencies of total organic carbon (TOC) and ammonia, microbial biomass, alkaline phosphatase (AKP) activity, microbial community structure, and AKP-associated genes. TOC and ammonia removal efficiency was highest in IP (64.8%) and cNMP (52.3%) treatments. Microbial community structure changed significantly across phosphorus sources that IP and cNMP encouraged and , respectively. The abundance of and genes was higher in IP treatments, whereas and genes dominated OP treatments. Our findings suggested that the performance of WWTPs was dependent on phosphorus sources and provided new insights into effective WWTP management.
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Reviewed by: Paulo Costa Lemos, LAQV Network of Chemistry and Technology, Portugal; Wei Li, East China University of Science and Technology, China
Edited by: Shaohua Chen, South China Agricultural University, China
This article was submitted to Microbiotechnology, Ecotoxicology and Bioremediation, a section of the journal Frontiers in Microbiology
ISSN:1664-302X
1664-302X
DOI:10.3389/fmicb.2019.01023