Effect of different salinity adaptation on the performance and microbial community in a sequencing batch reactor. (September 2016)

• Record Type: Journal Article
• Authors: Zhao, Yuanyuan; Park, Hee-Deung; Park, Jeong-Hoon; Zhang, Fushuang; Chen, Chen; Li, Xiangkun; Zhao, Dan; Zhao, Fangbo
• Is Part Of: Bioresource technology. Volume 216(2016)
• Page Start: 808
• Page End: 816
• Publication Date: 2016-09
• Subjects: Activated sludge -- High-throughput amplicon sequencing -- Microbial community -- Phylogenetic analysis -- Salinity influence; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2016.06.032
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Salinity greatly affected pollutants degradation and microbial communities in a SBR. The SBR could maintain good performance below 2.0 wt% salinity. The good performance was associated to abundance of TM7 at 2.0 wt% salinity. Actinobacteria was getting dominant at salinity higher than 2.5 wt%. 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.