Enhanced performance of simultaneous carbon, nitrogen and phosphorus removal from municipal wastewater in an anaerobic-aerobic-anoxic sequencing batch reactor (AOA-SBR) system by alternating the cycle times.

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ID: 84454
2020
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Abstract
The performance of simultaneous carbon (C), nitrogen (N) and phosphorus (P) removal was investigated by altering the cycle times in an anaerobic-aerobic-anoxic sequencing batch reactor (AOA-SBR) system. Results showed that the AOA-SBR system achieved high simultaneous C, N and P removal efficiency with a cycle time of 6 h, with average removal efficiencies for COD, TN, and TP of 96.81%, 96.32% and 94.33%, respectively. The highest anoxic removal rate of NO-N was 203.44 mg·g- MLVSS·d. Meanwhile, anaerobic release rate and aerobic, anoxic removal rate of TP reached peak values of 104.31 and 85.81 mg·g- MLVSS·d, respectively. Microbial community analysis demonstrated that Proteobacteria, Bacteroidetes and Candidatus Saccharibacteria at phylum level and Betaproteobacteria, Gammaproteobacteria, Sphingobacteriia, Deltaproteobacteria and Alphaproteobacteria at the class level benefited AOA-SBR performance. Functional analysis of genes indicated that the metabolic potential related to C, N and P metabolism increased under the optimal cycle time condition.
Reference Key
liu2020enhancedbioresource Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Liu, Shuli;Daigger, Glen T;Liu, Bingtao;Zhao, Weiyan;Liu, Jing;
Journal Bioresource technology
Year 2020
DOI
S0960-8524(20)30019-5
URL
Keywords
microbial community metabolic function nitrogen and phosphorus removal anaerobic-aerobic-anoxic sequencing batch cycle time

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