Abstract

This study investigates the feasibility of management of aquifer recharge (MAR) in Lebanon by designingwell barriers to remove seawater intrusion from the fractured carbonate aquifers. Groundwater flow andsaltwater/freshwater 50% sharp interface have been modeled along the coastal area using the GhybeneHerzberg theory. The groundwater flow simulations have been supported by field transmissivity estimationsand depth measurements carried out on 44 wells during 2003. Results have shown theseawater intrusion in coastal aquifers at Jieh and Damour regions. Three well-injection barriers havebeen proposed. The water volumes for recharge and the barrier positions have been defined by means ofgroundwater flow simulations. MAR can provide a valuable contribution to colloid (even pathogen)removal from injectant water, although during water infiltration in subsoil the reduction of aquiferpermeability causes clogging. A simple new model for estimating the soil-rock permeability reductiondue to the well clogging has been presented. The MAR, including the soil aquifer treatment at Damourand Jieh regions, has been studied by considering aquifer transmissivity (and soil porosity) reductioncaused by clogging. Furthermore, the appropriate mixing of the injectant water by using reclaimed water,groundwater and surface water can be simulated using the proposed models. The time required toachieve 5% of rock permeability reduction at the proposed well barriers ranged from 71 to 935 d, bychanging water quality and flow rate for recharge. This study can assist regional governments with watermanagement in areas affected by scarcity of freshwater by implementing appropriate well-barrierprojects.

Autore Pugliese

• Masciopinto Costantino

Tutti gli autori

• Masciopinto C.

Titolo volume/Rivista

Journal of environmental management

Anno di pubblicazione

2013

ISSN

1095-8630

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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