电磁波加载回流污泥对A<sup>2</sup>O厌氧池功能的影响

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Abstract

Based on the biological and dissolution effects of electromagnetic wave on sludge, returned sludge in A²O reactor was loaded by electromagnetic wave, and effect on the function of the anaerobic tank was investigated from the perspective of microbial community diversity. Sludge flocs were decomposed, and cell structure in returned sludge was destroyed owing to electromagnetic wave loading. The dissolution ratio of C, N and P was obvious. By contrast, the enrichment effect of TP in the anaerobic tank was significantly enhanced with the enrichment rate increased from 122.9% to 152.2%. The removal rates of TN and COD increased from 7.3% and 58.8% to 32.1% and 65.4%, respectively. MiSeq pyrosequencing showed that the abundance of microbial communities in the anaerobic tank increased, while the microbial diversity decreased. Carbon resource was supplemented due to the interaction of the biological and dissolution effects of electromagnetic wave on returned sludge. Consequently, the metabolic activity of microorganisms and the number of live bacteria in the anaerobic tank increased greatly. Zoogloea, Tolumonas, Dechloromonas and other bacterial genera were enriched in the anaerobic tank.

Key words： A²O electromagnetic wave returned sludge dissolution effect microbial community structure

Received: 30 November 2018

PACS:	X703
	X172

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	Articles by authors
	SANG Wen-jiao
	LI Dong
	FENG Yi-jie
	FENG Yang-yang
	ZHANG Wan-jun
	XU Qian

Cite this article:

SANG Wen-jiao,LI Dong,FENG Yi-jie等. Effect on function of anaerobic tank in A²O system with electromagnetic wave loading on returned sludge[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2796-2803.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I7/2796

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