Effect of different salinity adaptation on the performance and microbial community in a sequencing batch reactor

Yuanyuan Zhao, Hee-Deung Park, Jeong Hoon Park, Fushuang Zhang, Chen Chen, Xiangkun Li, Dan Zhao, Fangbo Zhao

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

The performance and microbial community profiles in a sequencing batch reactor (SBR) treating saline wastewater were studied over 300 days from 0 wt% to 3.0 wt% salinity. The experimental results indicated that the activated sludge had high sensitivity to salinity variations in terms of pollutants removal and sedimentation. At 2.0 wt% salinity, the system retained a good performance, and 95% removal rate of chemical oxygen demand (COD), biochemical oxygen demand (BOD), NH4 +-N and total phosphorus (TP) could be achieved. Operation before addition salinity revealed the optimal performance and the most microbial diversity indicated by 16S rRNA gene clone library. Sequence analyses illustrated that Candidate_division_TM7 (TM7) was predominant at 2.0 wt% salinity; however, Actinobacteria was more abundant at 3.0 wt% salinity.

Original languageEnglish
Pages (from-to)808-816
Number of pages9
JournalBioresource Technology
Volume216
DOIs
Publication statusPublished - 2016 Sep 1

Keywords

  • Activated sludge
  • High-throughput amplicon sequencing
  • Microbial community
  • Phylogenetic analysis
  • Salinity influence

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

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