Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation

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

	Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation
	Lan, Huachun; Qu, Jiuhui; Ma, Baiwen; Wang, Xing; Liu, Ruiping; Qi, Zenglu; Jefferson, William A.; Liu, Huijuan
刊名	WATER RESEARCH
	2017-09-15
卷号	121 期号:0 页码:171-177
关键词	In Situ Fe-based Flocs Ultrafiltration Membrane Synergistic Effects Antimony(v) Removal Sludge Discharge Frequency
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, a number of problems have become apparent concerning the granular adsorbents used currently, such as high running cost, high chance of causing membrane surface damage, low in situ chemical cleaning efficiency, etc. Herein, to overcome these disadvantages, loose in situ hydrolyzed flocs were directly injected into the membrane tank, providing strong adsorption ability at low cost. To test the feasibility of this method, the heavy metal pollutant antimony (Sb (V)) in a water plant was chosen at a test case, which is similar to arsenic and difficult to remove. We found that Fe-based flocs integrated with an UF membrane showed a large potential advantage in removing Sb(V), even after running for 110 days. We demonstrated that the observed slow transmembrane pressure development could be ascribed to the loose floc cake layer formed, even though some extracellular polymeric substances were induced during operation. We also found that the floc cake layer was easily removed by washing with feed water or dissolved by in situ chemical cleaning under strongly acidic conditions, and many primary membrane pores were clearly observed. In addition, a relative long sludge discharge interval was feasible for this technology and the effluent quality was good, including the turbidity, chromaticity and iron concentration. Based on the excellent performance, these flocs integrated with UF membranes indeed show potential for application in water treatment. (C) 2017 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39689]
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	Lan, Huachun,Qu, Jiuhui,Ma, Baiwen,et al. Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation[J]. WATER RESEARCH,2017,121(0):171-177.
APA	Lan, Huachun.,Qu, Jiuhui.,Ma, Baiwen.,Wang, Xing.,Liu, Ruiping.,...&Liu, Huijuan.(2017).Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation.WATER RESEARCH,121(0),171-177.
MLA	Lan, Huachun,et al."Enhanced antimony(V) removal using synergistic effects of Fe hydrolytic flocs and ultrafiltration membrane with sludge discharge evaluation".WATER RESEARCH 121.0(2017):171-177.