给水管网多相界面中微生物表面疏水性研究

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Abstract The CDC (Centers for Disease Control) biofilm reactor was used to simulate the water distribution system, and two kinds of hanging materials of polyvinyl chloride (PVC) and polycarbonate (PC) were selected. The cell hydrophobicity of different bacterial populations in the water phase, biofilm phase and particulate phase of the two hanging materials was studied by a combination of microbial adhesion hydrocarbon (MATH) experiment and Illumina high-throughput sequencing. The results showed that the dominant bacteria in the reactor of PVC hanging coupon was Firmicutes and the relative abundance was 68.31%~81.00%. While the dominant bacteria in the reactor of PC hanging coupon was Proteobacteria and the relative abundance was 24.39%~64.40%. The predominant bacteria in the reactor of PVC hanging coupon contained three types of pathogenic bacteria, and the PC hanging coupon contained eight pathogens. The hydrophobicity of biofilm phase on the PC hanging coupon was higher than that on PVC, which facilitated the attachment of bacteria and biofilm formation. The ability of PVC material to form biofilm was lower. Hence, it had positive impact on the secondary pollution control during the water transportation. However, other engineering factors should also be considered in the practical applications.

Key words： water distribution system biofilm cell hydrophobicity microbial adhesion hydrocarbon (MATH) high-throughput sequencing

Received: 29 April 2019

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X172

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	Articles by authors
	ZHANG Ming-lu
	XU Shao-feng
	XU Meng-yao
	WANG Li
	CHAI Shan-shan
	BAI Miao
	ZHANG Can

Cite this article:

ZHANG Ming-lu,XU Shao-feng,XU Meng-yao等. Study on microbial surface hydrophobicity under multiphase interface of water distribution network[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(11): 4823-4830.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I11/4823

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