干旱区生态环境知识资源中心(Arid): Mitigation of downstream propagation of contaminated water in a carbonate aquifer

Arid

DOI	10.1016/j.scitotenv.2018.11.103
	Mitigation of downstream propagation of contaminated water in a carbonate aquifer - The northeastern Negev desert, Israel
	Burg, Avihu 1; Guttman, Joseph 2
通讯作者	Burg, Avihu
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	654 页码:550-562
英文摘要	Groundwater pollution in Israel mainly occurs in the populated urban areas. Yet, in the 90's a major salinization was identified in a deep well in the northeastern part of the Negev desert, and a trend of increasing salinity was recognized in an adjacent spring. Since then the salinity of the spring is on the rise reaching a rate of 21 mgCl/L per month. New geochemical data allows the identification of the source, composition and volume of the contaminant, as well as its dispersion in the aquifer. The source of the contamination is attributed to highly saline (similar to 40,000 mgCl/L), acidic and trace elements-rich industrial wastewater that leaked from evaporation ponds and also drained through karstic sinkhole to the subsurface over a period of decades. The contamination is reflected by a sharp increase in the concentrations of most major elements and by a moderate increase in a few trace elements. The total waste water volume that leaked is assessed to be 75 MCM. The study reveals that most of the contaminated water is still far upstream of the natural outlet. Due to the specific geological configuration the highly contaminated groundwater is channeled into a narrow corridor of an elongated syncline. Unlike other similar contamination cases around the world, pumping along this syncline can reduce the flow of the contaminated water further downstream towards a region where it disperses. The study provides the decision makers with tools that can reduce the environmental hazard and enable development of water production in this arid region. The current research emphasizes the importance of a combined geological, hydrological and geochemical study of a contaminated aquifer to fully understand the flow regime and contamination process. Such studies are a crucial step before an optimal mitigation action can be undertaken to rehabilitate a contaminated aquifer. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	Waste water Salinization Judea Group Trace elements Mixing ratio Channeled flow
类型	Article
语种	英语
国家	Israel
收录类别	SCI-E
WOS记录号	WOS:000458630100138
WOS关键词	NUBIAN SANDSTONE AQUIFERS ; HYDROGEOLOGICAL INTERRELATIONSHIP ; GROUNDWATER CONTAMINATION ; TRACE-ELEMENTS ; COASTAL-PLAIN ; JUDEA GROUP ; DEAD ; GEOCHEMISTRY ; URANIUM ; LEAKAGE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218633
作者单位	1.Geol Survey Israel, 30 Malkei Israel St, IL-9550161 Jerusalem, Israel; 2.Mekorot Water Co Ltd, 9 Lincoln St, IL-6713402 Tel Aviv, Israel
推荐引用方式 GB/T 7714	Burg, Avihu,Guttman, Joseph. Mitigation of downstream propagation of contaminated water in a carbonate aquifer - The northeastern Negev desert, Israel[J],2019,654:550-562.
APA	Burg, Avihu,&Guttman, Joseph.(2019).Mitigation of downstream propagation of contaminated water in a carbonate aquifer - The northeastern Negev desert, Israel.SCIENCE OF THE TOTAL ENVIRONMENT,654,550-562.
MLA	Burg, Avihu,et al."Mitigation of downstream propagation of contaminated water in a carbonate aquifer - The northeastern Negev desert, Israel".SCIENCE OF THE TOTAL ENVIRONMENT 654(2019):550-562.