Effects of straw type and ratio change on microbial community in anaerobic digestion of sludge

被引:0
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作者
Tang, Taotao [1 ]
Li, Jiang [1 ,2 ]
Yang, Aijinag [1 ,2 ]
Yang, Zhao [1 ]
Xiang, Fuliang [1 ]
Yuan, Huayu [1 ]
机构
[1] College of Resources and Environmental Engineering, Guizhou University, Guiyang,Guizhou,550025, China
[2] Institute of Environmental Engineerting Planing and Designing, Guizhou University, Guiyang,Guizhou,550025, China
关键词
In order to investigate the effects of straw type and ratio change on microbial community structure in sludge anaerobic digestion system; 16S rRNA high-throughput sequencing technology was used to analyze the microbial community in sludge-straw anaerobic co-digestion system. The results showed that addition of corn straw had a great influence on the pH and volatile fatty acids (VFAs) in the system; especially on acetic acid. Addition of wheat and rice straw had a greater effect on alkalinity; but the VFAs and acetic acid concentrations in the system increased when the ratio increased; especially 1:1.5 (mass ratio of volatile solids). Through the analysis of microbial community structure; it was found that the change of straw ratio and types could significantly increase the relative abundance of hydrolysis bacteria and acidification bacteria (p © 2020; Chemical Industry Press. All right reserved;
D O I
10.16085/j.issn.1000-6613.2019-0777
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页码:667 / 678
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