Long term effects of Pb2+ on the membrane fouling in a hydrolytic-anoxic-oxic-membrane bioreactor treating synthetic electroplating wastewater

doi:10.1016/j.chemosphere.2019.05.231

CORC > 兰州理工大学 > 兰州理工大学

	Long term effects of Pb2+ on the membrane fouling in a hydrolytic-anoxic-oxic-membrane bioreactor treating synthetic electroplating wastewater
	Wang, Qiong 1; Wen, Qinxue 1; Chen, Zhiqiang 1,2
刊名	CHEMOSPHERE
	2019-10
卷号	232 页码:430-438
关键词	Pb2+ Membrane fouling Molecular weight distribution Flocs aggregation capacity Electroplating wastewater
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2019.05.231
英文摘要	Long-term effects of Pb2+ on the operating performance and membrane fouling of two hydrolytic-anoxic-oxic-membrane bioreactors treating synthetic electroplating wastewater were investigated. The COD, NH4+-N and TN removal efficiencies decreased by 5.5%, 10.4% and 7.9% with long-term exposure of 2 mg L-1 Pb2+, while serious decreases achieved 25.4%, 35.0% and 26.2% with 6 mg L-1 Pb2+ exposure, respectively. 2 mg L-1 Pb2+ mitigated the cake layer fouling rate by 25.4% but increased the pore blocking rate by 69.1%, which was contributed by the increase of low and moderate molecular weight (MW) components in the soluble and colloidal foulants (SCFs). 6 mg L-1 Pb2+ accelerated the cake layer fouling rate by 101.1%, but mitigated the pore blocking rate by 6.4% due to the increase of high MW SCFs (especially polysaccharides). Thermodynamic analyses showed that Pb2+ regulated the concentration and protein/polysaccharide ratio of loosely bound extracellular polymeric substances, thus changing the flocs hydrophobicity and aggregation capacity, leading the cake layer fouling rate variation. (C) 2019 Elsevier Ltd. All rights reserved.
资助项目	Heilongjiang Provincial RD Program[CJ2017GJ0023]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000473121800046
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31543]
专题	兰州理工大学
通讯作者	Chen, Zhiqiang
作者单位	1.Harbin Inst Technol SKLUWRE HIT, State Key Lab Urban Water Resource & Environm, Harbin 150090, Heilongjiang, Peoples R China 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Qiong,Wen, Qinxue,Chen, Zhiqiang. Long term effects of Pb2+ on the membrane fouling in a hydrolytic-anoxic-oxic-membrane bioreactor treating synthetic electroplating wastewater[J]. CHEMOSPHERE,2019,232:430-438.
APA	Wang, Qiong,Wen, Qinxue,&Chen, Zhiqiang.(2019).Long term effects of Pb2+ on the membrane fouling in a hydrolytic-anoxic-oxic-membrane bioreactor treating synthetic electroplating wastewater.CHEMOSPHERE,232,430-438.
MLA	Wang, Qiong,et al."Long term effects of Pb2+ on the membrane fouling in a hydrolytic-anoxic-oxic-membrane bioreactor treating synthetic electroplating wastewater".CHEMOSPHERE 232(2019):430-438.