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Effects of biomass pyrolysis derived wood vinegar on microbial activity and communities of activated sludge
- Zhang, Fang, Shao, Jingai, Yang, Haiping, Guo, Dabin, Chen, Zhihua, Zhang, Shihong, Chen, Hanping
- Bioresource technology 2019 v.279 pp. 252-261
- Acidobacteria, Bacteroidetes, Nitrospirae, Proteobacteria, activated sludge, biomass, denitrifying bacteria, microbial activity, nitrifying bacteria, nitrogen-fixing bacteria, pyrolysis, sewage treatment, species richness, vinegars, wood
- The effects of wood vinegar (WVG) on microbial activity and communities of activated sludge were investigated in a sequencing batch reactor (SBR) process. Results showed that the optimal WVG concentration was 4 μL/L when the pollutants removal efficiency and microbial activity were promoted by a WVG dilution factor of 1000. WVG could reduce the increase in microbial species richness, which led to a more notable variety of microbial species diversity. The enhanced microbial activity and communities were addressed to the promotion of 7 main classes of microbes in Proteobacteria, Bacteroidetes, Acidobacteria, and Nitrospirae phyla. The growth of ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB), and main genera of denitrifying bacteria (DNB), phosphorus-accumulating organisms (PAOs), and glycogen-accumulating organisms (GAOs) could be promoted by WVG, which improved the sewage treatment effectiveness in a SBR.