添加芽孢杆菌污泥反硝化特性及菌群结构分析

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Abstract Compared with the conventional activated sludge, the experiment was carried out to study the denitrification performance of activated sludge of Bacillus subtilis (hereinafter called Bacillus activated sludge) and the effect of Bacillus on microbial community structure. The results showed that within a certain range, the denitrification rate of two sludge was positively correlated with carbon-nitrogen ratio, the maximum denitrification rate of the experimental group could reach 27.144mg TN/(gMLSS·h) with the carbon-nitrogen ratio of 10, about 2.7 times of the control group. The bacterial community structure of the two groups was compared by Miseq high-throughput sequencing, and the results showed that the diversity of bacterial community in the experimental group of bacterial phylum, class, order, family and genus was better than that of the control group. The sludge in the experimental group mainly included Gemmobacter, Brachymonas, Thermomonas, Defluviimonas, Longilinea, Ornatilinea, Aridibacter, Exiguobacterium and so on. These bacteria cooperated to make the activated sludge with high efficient denitrification characteristics with sufficient carbon source.

Key words： Bacillus diversity of bacteria flora efficient denitrification specific denitrification rate

Received: 12 May 2017

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	Articles by authors
	WANG Si-yu
	LI Jun
	WANG Xiu-jie
	WANG Wei-qi
	CHAI Jian-zhong

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WANG Si-yu,LI Jun,WANG Xiu-jie等. Denitrification characteristics of Bacillus subtilis sludge and analysis of microbial community structure[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(12): 4649-4656.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I12/4649

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