A novel strategy to alleviate ultrafiltration membrane fouling by rotating membrane module

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	A novel strategy to alleviate ultrafiltration membrane fouling by rotating membrane module
	Xue, Wenjing; Jian, Meipeng; Lin, Tao; Ma, Baiwen; Wu, Ruijun; Li, Xingchun
刊名	CHEMOSPHERE
	2020-12
卷号	260 页码:1-14
关键词	Ultrafiltration Flocs Integration Membrane module rotation Fouling alleviation
ISSN号	0045-6535
英文摘要	Integrated ultrafiltration (UF) membrane technology has attracted extensive attention in drinking water treatment due to its excellent performance and small footprint. However, membrane modules normally are static in membrane tanks, which cause a gradual increase in the cake layer thickness over time, thus resulting in severe membrane fouling. To overcome this shortcoming, we report an effective strategy to regulate cake layer thickness by rotating the membrane module in the presence of flocs. The results showed that the cake layer thickness can be effectively reduced because of the floc looseness, resulting in the alleviation of membrane fouling. The higher the module rotation speed, the higher the flow velocity in the membrane tank and the larger the shearing force on the cake layer surface. As a result, the membrane fouling was considerably mitigated, and it was interesting that the pollutant removal efficiency was hardly influenced. With module rotation, we found that acid solutions displayed a better performance in removing pollutants (even low molecular weight pollutants) and alleviating membrane fouling compared to the alkaline conditions because of the smaller floc size, larger floc specific surface area, and higher floc positive charge. Additionally, an excellent UF membrane performance was also observed with the raw water taken from the South-North water in China. Collectively, this study demonstrated that floc-based cake layers can be effectively regulated with module rotation, which has a great potential in drinking water treatment application, particularly in small water plants. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45227]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Xue, Wenjing,Jian, Meipeng,Lin, Tao,et al. A novel strategy to alleviate ultrafiltration membrane fouling by rotating membrane module[J]. CHEMOSPHERE,2020,260:1-14.
APA	Xue, Wenjing,Jian, Meipeng,Lin, Tao,Ma, Baiwen,Wu, Ruijun,&Li, Xingchun.(2020).A novel strategy to alleviate ultrafiltration membrane fouling by rotating membrane module.CHEMOSPHERE,260,1-14.
MLA	Xue, Wenjing,et al."A novel strategy to alleviate ultrafiltration membrane fouling by rotating membrane module".CHEMOSPHERE 260(2020):1-14.