Comparison of the effects of aluminum and iron(III) salts on ultrafiltration membrane biofouling in drinking water treatment

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

	Comparison of the effects of aluminum and iron(III) salts on ultrafiltration membrane biofouling in drinking water treatment
	Qu, Jiuhui; Liu, Huijuan; Lan, Huachun; Wang, Xing; Ma, Baiwen; Bai, Yaohui
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2018
卷号	63 页码:96-104
关键词	Ultrafiltration membrane Al-based and Fe-based salts Coagulation Behavior of microorganisms Fouling mechanism
ISSN号	1001-0742
文献子类	Article
英文摘要	Coagulation plays an important role in alleviating membrane fouling, and a noticeable problem is the development of microorganisms after long-time operation, which gradually secrete extracellular polymeric substances (EPS). To date, few studies have paid attention to the behavior of microorganisms in drinking water treatment with ultrafiltration (UF) membranes. Herein, the membrane biofouling was investigated with different aluminum and iron salts. We found that Al-2(SO4)(3)center dot 18H(2)O performed better in reducing membrane fouling due to the slower growth rate of microorganisms. In comparison to Al-2(SO4)(3)center dot 18H(2)O, more EPS were induced with Fe-2(SO4)(3)center dot xH(2)O, both in the membrane tank and the sludge on the cake layer. We also found that bacteria were the major microorganisms, of which the concentration was much higher than those of fungi and archaea. Further analyses showed that Proteobacteria was dominant in bacterial communities, which caused severe membrane fouling by forming a biofilm, especially for Fe-2(SO4)(3)center dot xH(2)O. Additionally, the abundances of Bacteroidetes and Verrucomicrobia were relatively higher in the presence of Al-2(SO4)(3)center dot 18H(2)O, resulting in less severe biofouling by effectively degrading the protein and polysaccharide in EPS. As a result, in terms of microorganism behaviors, Al-based salts should be given preference as coagulants during actual operations. (C) 2017 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41334]
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	Qu, Jiuhui,Liu, Huijuan,Lan, Huachun,et al. Comparison of the effects of aluminum and iron(III) salts on ultrafiltration membrane biofouling in drinking water treatment[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2018,63:96-104.
APA	Qu, Jiuhui,Liu, Huijuan,Lan, Huachun,Wang, Xing,Ma, Baiwen,&Bai, Yaohui.(2018).Comparison of the effects of aluminum and iron(III) salts on ultrafiltration membrane biofouling in drinking water treatment.JOURNAL OF ENVIRONMENTAL SCIENCES,63,96-104.
MLA	Qu, Jiuhui,et al."Comparison of the effects of aluminum and iron(III) salts on ultrafiltration membrane biofouling in drinking water treatment".JOURNAL OF ENVIRONMENTAL SCIENCES 63(2018):96-104.