Microbial community shifts in the oxic-settling-anoxic process in response to changes to sludge interchange ratio.

ABSTRACT: This particular study set out to demonstrate alterations on the microbial community of the oxic-settling-anaerobic/anoxic (OSA) process treating real domestic wastewater by changing interchange ratios (IRs). The sludge yield of systems operated at different IRs (1/13, 1/17 and 1/20) to assess sludge reduction was used to analyze microbial community composition variations. The highest IR (1/13) resulted in the highest sludge reduction (52.1%), while the OSA systems with IR of 1/17 and 1/20 reduced sludge production by 37.4% and 35.5%, respectively, in comparison to conventional systems. 16S rRNA gene amplicon sequencing analysis showed that the bacterial communities were composed of similar phylogenetic groups, Proteobacteria, Acidobacteria, and Bacteroidetes being dominant. T

SUBMITTER: Karlikanovaite-Balikci A 

PROVIDER: S-EPMC6495078 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature