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Water 2017, 9(1), 53; doi:10.3390/w9010053

Design and Testing of Recharge Wells in a Coastal Aquifer: Summary of Field Scale Pilot Tests

Mekorot, Israel National Water Company, 9 Lincoln Street, P.O. Box 20128, Tel-Aviv 6713402, Israel
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Academic Editor: Pieter Stuyfzand
Received: 9 October 2016 / Revised: 8 January 2017 / Accepted: 10 January 2017 / Published: 14 January 2017
(This article belongs to the Special Issue Water Quality Considerations for Managed Aquifer Recharge Systems)
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Abstract

Surplus water from seawater desalination plants along the Israeli Coast can be injected underground for seasonal storage. Two pilot projects were established to simulate the movement of air bubbles and changes in the well hydraulic parameters during pumping and recharging. The study showed that it is impossible to remove the smaller air bubbles (dissolved air) that are created during the injection process, even when the injection pipe is fully saturated. The pumping tests showed that there were large differences in the well hydraulic parameters between the pumping and the recharge tests despite that they were conducted at the same well. Two mechanisms are responsible for the reduction in the aquifer coefficients during the recharge event. The first mechanism is the pressures that the injected water needs to overcome; the aquifer pressure and the pore water pressure it is supposed to replace at the time of the injection. The second mechanism is the pressure that the injected water needs to overcome the clogging process. It is expressed as the high water level inside the recharge well in comparison to the small rising of the water level in the observation wells. This research gives good insight into the injection mechanism through wells and is essential for any further development of injection facilities and for the operation and management protocols. View Full-Text
Keywords: recharge well; air clogging; well design; desalination; MAR (Managed Aquifer Recharge); IWRM (Integrated Water Resources Management); MARSOL recharge well; air clogging; well design; desalination; MAR (Managed Aquifer Recharge); IWRM (Integrated Water Resources Management); MARSOL
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Guttman, J.; Negev, I.; Rubin, G. Design and Testing of Recharge Wells in a Coastal Aquifer: Summary of Field Scale Pilot Tests. Water 2017, 9, 53.

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