DOI: 10.5194/hess-21-1173-2017
Scopus记录号: 2-s2.0-85014298021
论文题名: Consequences and mitigation of saltwater intrusion induced by short-circuiting during aquifer storage and recovery in a coastal subsurface
作者: Gerardus Zuurbier K ; , Jan Stuyfzand P
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 2 起始页码: 1173
结束页码: 1188
语种: 英语
Scopus关键词: Aquifers
; Groundwater
; Groundwater flow
; Heat storage
; Hydrogeology
; Mercury (metal)
; Recovery
; Salt water intrusion
; Solute transport
; Timing circuits
; Water
; Aquifer storage and recovery
; Aquifer thermal energy storage
; Complete compensation
; Hydrochemical analysis
; Partially penetrating wells
; Performance estimation
; Recovery efficiency
; Solute transport model
; Groundwater resources
; aquitard
; brackish water
; coastal aquifer
; confined aquifer
; field method
; groundwater flow
; hydrological modeling
; saline intrusion
; solute transport
; subsurface flow
; water storage
; well technology
英文摘要: Coastal aquifers and the deeper subsurface are increasingly exploited. The accompanying perforation of the subsurface for those purposes has increased the risk of short-circuiting of originally separated aquifers. This study shows how this short-circuiting negatively impacts the freshwater recovery efficiency (RE) during aquifer storage and recovery (ASR) in coastal aquifers. ASR was applied in a shallow saltwater aquifer overlying a deeper, confined saltwater aquifer, which was targeted for seasonal aquifer thermal energy storage (ATES). Although both aquifers were considered properly separated (i.e., a continuous clay layer prevented rapid groundwater flow between both aquifers), intrusion of deeper saltwater into the shallower aquifer quickly terminated the freshwater recovery. The presumable pathway was a nearby ATES borehole. This finding was supported by field measurements, hydrochemical analyses, and variable-density solute transport modeling (SEAWAT version 4; Langevin et al., 2007). The potentially rapid short-circuiting during storage and recovery can reduce the RE of ASR to null. When limited mixing with ambient groundwater is allowed, a linear RE decrease by short-circuiting with increasing distance from the ASR well within the radius of the injected ASR bubble was observed. Interception of deep short-circuiting water can mitigate the observed RE decrease, although complete compensation of the RE decrease will generally be unattainable. Brackish water upconing from the underlying aquitard towards the shallow recovery wells of the ASR system with multiple partially penetrating wells (MPPW-ASR) was observed. This leakage may lead to a lower recovery efficiency than based on current ASR performance estimations. © Author(s) 2017. CC Attribution 3.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79243
Appears in Collections: 气候变化事实与影响
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作者单位: KWR Watercycle Research Institute, Groningenhaven 7, Nieuwegein, PE, Netherlands; Technical University Delft, Faculty of Civil Engineering, P.O. Box 5048, Delft, GA, Netherlands
Recommended Citation:
Gerardus Zuurbier K,, Jan Stuyfzand P. Consequences and mitigation of saltwater intrusion induced by short-circuiting during aquifer storage and recovery in a coastal subsurface[J]. Hydrology and Earth System Sciences,2017-01-01,21(2)