德国分散式污水处理系统微生物群落结构及功能

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Abstract

The microbial community structure in two bioreactors of a decentralized urban water infrastructure systems in Germany was investigated through 16S rRNA gene sequencing. The PICRUSt software was then used to deduce the function of the microbial community. In winter, the average COD removal rate reached 52% at 20℃, the influent COD was 712mg/L in the anaerobic membrane reactor (AnMBR) and the biogas production rate was 122L/kgCOD. At 37℃, the biogas production rate was 374L/kgVSS and the COD was 3007mg/L in the primary sludge digester (PSD). Similar microbial compositions were observed in both bioreactors, with Synerigistaceae having the highest relative abundance at the family level among bacteria (AnMBR:24.0%±10.0%; PSD:11.0%±3.1%) and Methanobacteriaceae having the highest relative abundance among archaea (AnMBR:0.6%±0.3%; PSD:13.8%±1.8%). The functional genomic composition was also similar in both reactors, with the H₂reductive CO₂ pathway being the main approach for methane production. The relative abundances of H₂ reductive CO₂ pathway related genes, F420synthesis related genes and coenzyme M synthesis related genes in the PSD reactor were higher than those in the AnMBR reactor.

Key words： anaerobic bioreactor decentralized wastewater treatment system microbial community structure and function 16S rRNA gene high-throughput sequencing

Received: 02 January 2018

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	ZHANG Kun

Cite this article:

ZHANG Kun. Microbial community structure and function in a decentralized urban water infrastructure systems in German[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(8): 2981-2989.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I8/2981

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