期刊
JOURNAL OF HYDROLOGIC ENGINEERING
卷 20, 期 3, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)HE.1943-5584.0000990
关键词
ASR; Horizontal wells; HDDW; Coastal aquifers; Horizontal directional drilled wells; Recovery efficiency; Aquifer storage and recovery; Freshwater management
资金
- Dutch national research program Knowledge for Climate
Aquifer storage and recovery (ASR) of freshwater surpluses can reduce freshwater shortages in coastal areas during periods of prolonged droughts. However, ASR is troublesome in saline coastal aquifers as buoyancy effects generally cause a significant loss of injected freshwater. The use of a pair of parallel, superimposed horizontal wells is proposed to combine shallow ASR with deep interception of underlying saltwater. A shallow, fresh groundwater lens can thereby be enlarged and protected. This freshmaker setup was successfully placed in a coastal aquifer in The Netherlands using horizontal directional drilling to install 70-m-long horizontal directional drilled wells (HDDWs). The freshmaker prototype aims to inject a specific volume of freshwater and abstract the same volume of water (consisting of injected water and ambient native groundwater) within the targeted water quality. Groundwater transport modeling preceding ASR operation demonstrates that this set up is able to abstract a water volume of 4,200 m(3) equal to the injected freshwater volume without exceeding strict salinity limits, which would be unattainable with conventional ASR. This is the first study to demonstrate the potential benefits of HDDWs for a field ASR application. The model outcomes indicate that the feasibility perspectives of ASR in coastal aquifers worldwide require revision thanks to recent developments in hydrologic engineering. (C) 2014 American Society of Civil Engineers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据