好氧颗粒污泥形成过程中群感效应的作用研究

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Abstract By observing the variations of EPS, hydrolytic amino acids and acyl-homoserine lactones (AHLs) in the formation of aerobic granular sludge (AGS), the effect of quorum sensing is discovered in depth. The experimental results showed that in the granulation process, the final average size of AGS was approximately 150μm and the protein in EPS increased significantly, and the tightly bound EPS (TB-EPS) played an important role for granulation. The formation of aromatic substances and tyrosine protein substances in EPS provides material basis for AGS formation, and hydrophobic substances alanine and methionine promotes the formation of AGS and maintains the stability. Quorum sensing was generally strengthened during the formation process of AGS. The concentration of C4-HSL decreased significantly, while C6-HSL, 3OC6-HSL and C8-HSL were correlated with EPS, PN and PS, furthermore, C6-HSL and C8-HSL were presented significantly positively correlated with proteins and polysaccharides in TB-EPS.

Key words： aerobic granular sludge extracellular polymeric substances quorum sensing acyl-homoserine lactones (AHLs) protein andamino acid

Received: 14 October 2019

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X705

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	Articles by authors
	ZHI Li-ling
	MA Xin-xin
	LIU Qi-Xin
	WANG Shuo
	LI Ji

Cite this article:

ZHI Li-ling,MA Xin-xin,LIU Qi-Xin等. Effect of quorum sensing in the formation of aerobic granular sludge[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 2148-2156.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I5/2148

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