干旱区生态环境知识资源中心(Arid): Field Measurements of Electro-osmotic Transport of Ground Water Contaminants in a Lithologically Heterogeneous Alluvial-Fan Setting

Arid

DOI	10.2172/15006202
报告编号	UCRL-ID-144879
来源ID	OSTI_ID: 15006202
	Field Measurements of Electro-osmotic Transport of Ground Water Contaminants in a Lithologically Heterogeneous Alluvial-Fan Setting
	McNab,W; Karachewski,J; Weismann,G
英文摘要	Remediation of contaminated ground water by pump-and-treat approaches is often problematic because the heterogeneous distributions of lithologies, and hence hydraulic conductivities, characterizing many aquifers result in complex flow paths. Consequently, contaminants are removed readily from the most permeable regions of the subsurface but the less permeable sediments, rich in clay and silt, remain largely undisturbed. These continue to act as diffusion-limited sources for further contamination of the permeable sediments. Under certain circumstances, specialized technologies, such as electrokinetic approaches, may be useful for enhancing the removal of ground water from low-permeability sediments. These circumstances generally include high contaminant concentrations--hence posing a chronic source threat--and a relatively small area requiring treatment. At Lawrence Livermore National Laboratory (LLNL) in Livermore, California, electro-osmosis (EO) is being evaluated as a means for extracting ground water containing trichloroethylene (TCE) and other chlorinated hydrocarbons from fine-grained sediments in a plume source area.
出版年	2001
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; AQUIFERS ; CALIFORNIA ; CLAYS ; CONTAMINATION ; ELECTRODYNAMICS ; GROUND WATER ; HYDRAULICS ; LAWRENCE LIVERMORE NATIONAL LABORATORY ; ORGANIC CHLORINE COMPOUNDS ; PLUMES ; REMOVAL ; SEDIMENTS ; SILT ; TRANSPORT
URL	http://www.osti.gov/scitech/servlets/purl/15006202
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/268252
推荐引用方式 GB/T 7714	McNab,W,Karachewski,J,Weismann,G. Field Measurements of Electro-osmotic Transport of Ground Water Contaminants in a Lithologically Heterogeneous Alluvial-Fan Setting,2001.