GSTDTAP  > 资源环境科学
DOI10.1002/2017WR022116
Improving the Efficiency of 3-D Hydrogeological Mixers: Dilution Enhancement Via Coupled Engineering-Induced Transient Flows and Spatial Heterogeneity
Di Dato, Mariaines1; de Barros, Felipe P. J.2; Fiori, Aldo3; Bellin, Alberto1
2018-03-01
发表期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2018
卷号54期号:3页码:2095-2111
文章类型Article
语种英语
国家Italy; USA
英文摘要

Natural attenuation and in situ oxidation are commonly considered as low-cost alternatives to ex situ remediation. The efficiency of such remediation techniques is hindered by difficulties in obtaining good dilution and mixing of the contaminant, in particular if the plume deformation is physically constrained by an array of wells, which serves as a containment system. In that case, dilution may be enhanced by inducing an engineered sequence of injections and extractions from such pumping system, which also works as a hydraulic barrier. This way, the aquifer acts as a natural mixer, in a manner similar to the industrialized engineered mixers. Improving the efficiency of hydrogeological mixers is a challenging task, owing to the need to use a 3-D setup while relieving the computational burden. Analytical solutions, though approximated, are a suitable and efficient tool to seek the optimum solution among all possible flow configurations. Here we develop a novel physically based model to demonstrate how the combined spatiotemporal fluctuations of the water fluxes control solute trajectories and residence time distributions and therefore, the effectiveness of contaminant plume dilution and mixing. Our results show how external forcing configurations are capable of inducing distinct time-varying groundwater flow patterns which will yield different solute dilution rates.


领域资源环境
收录类别SCI-E
WOS记录号WOS:000430364900038
WOS关键词GRADIENT TRACER TEST ; CHAOTIC ADVECTION ; CAPE-COD ; CONCENTRATION FLUCTUATIONS ; SOLUTE TRANSPORT ; POROUS-MEDIA ; STOCHASTIC-ANALYSIS ; AQUIFER TRANSPORT ; UNSTEADY-FLOW ; GROUNDWATER
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/21204
专题资源环境科学
作者单位1.Univ Trento, Dept Civil Environm & Mech Engn, Trento, Italy;
2.Univ Southern Calif, Sonny Astani Dept Civil & Environm Engn, Los Angeles, CA USA;
3.Roma Tre Univ, Dipartimento Ingn, Rome, Italy
推荐引用方式
GB/T 7714
Di Dato, Mariaines,de Barros, Felipe P. J.,Fiori, Aldo,et al. Improving the Efficiency of 3-D Hydrogeological Mixers: Dilution Enhancement Via Coupled Engineering-Induced Transient Flows and Spatial Heterogeneity[J]. WATER RESOURCES RESEARCH,2018,54(3):2095-2111.
APA Di Dato, Mariaines,de Barros, Felipe P. J.,Fiori, Aldo,&Bellin, Alberto.(2018).Improving the Efficiency of 3-D Hydrogeological Mixers: Dilution Enhancement Via Coupled Engineering-Induced Transient Flows and Spatial Heterogeneity.WATER RESOURCES RESEARCH,54(3),2095-2111.
MLA Di Dato, Mariaines,et al."Improving the Efficiency of 3-D Hydrogeological Mixers: Dilution Enhancement Via Coupled Engineering-Induced Transient Flows and Spatial Heterogeneity".WATER RESOURCES RESEARCH 54.3(2018):2095-2111.
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