Multiple dynamic Al-based floc layers on ultrafiltration membrane surfaces for humic acid and reservoir water fouling reduction

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

	Multiple dynamic Al-based floc layers on ultrafiltration membrane surfaces for humic acid and reservoir water fouling reduction
	van der Meer, Walter; Qu, Jiuhui; Liu, Huijuan; Sun, Jingqiu; Liu, Gang; Liu, Ruiping; Li, Wenjiang; Ma, Baiwen
刊名	WATER RESEARCH
	2018-08-01
卷号	139 页码:291-300
关键词	Ultrafiltration membrane Al-based flocs Multiple dynamic layers Humic acid and reservoir water Fouling reduction
ISSN号	0043-1354
文献子类	Article
英文摘要	The integration of adsorbents with ultrafiltration (UF) membranes is a promising method for alleviating membrane fouling and reducing land use. However, adsorbents typically are only injected into the membrane tank once, resulting in a single dynamic protection layer and low removal efficiency over long-term operation. In addition, the granular adsorbents used can cause membrane surface damage. To overcome these disadvantages, we injected inexpensive and loose aluminum (Al)-based flocs directly into a membrane tank with bottom aeration in the presence of humic acid (HA) or raw water taken from the Miyun Reservoir (Beijing, China). Results showed that the flocs were well suspended in the membrane tank, and multiple dynamic floc protection layers were formed (sandwich-like) on the membrane surface with multiple batch injections. Higher frequency floc injections resulted in better floc utilization efficiency and less severe membrane fouling. With continuous injection, acid solutions demonstrated better performance in removing HA molecules, especially those with small molecular weight, and in alleviating membrane fouling compared with the use of high aeration rate or polyacrylamide injection. This was attributed to the small particle size, large specific surface area, and high zeta potential of the flocs. Additionally, excellent UF membrane performance was exhibited by reservoir water with continuous injection and acid solution. Based on the outstanding UF membrane performance, this innovative integrated filtration with loose Al-based flocs has great application potential for water treatment. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41388]
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	van der Meer, Walter,Qu, Jiuhui,Liu, Huijuan,et al. Multiple dynamic Al-based floc layers on ultrafiltration membrane surfaces for humic acid and reservoir water fouling reduction[J]. WATER RESEARCH,2018,139:291-300.
APA	van der Meer, Walter.,Qu, Jiuhui.,Liu, Huijuan.,Sun, Jingqiu.,Liu, Gang.,...&Ma, Baiwen.(2018).Multiple dynamic Al-based floc layers on ultrafiltration membrane surfaces for humic acid and reservoir water fouling reduction.WATER RESEARCH,139,291-300.
MLA	van der Meer, Walter,et al."Multiple dynamic Al-based floc layers on ultrafiltration membrane surfaces for humic acid and reservoir water fouling reduction".WATER RESEARCH 139(2018):291-300.