Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Management of aquifer recharge in Lebanon by removing seawater intrusion from coastal aquifers |
| Abstract | This study investigates the feasibility of management of aquifer recharge (MAR) in Lebanon by designing well barriers to remove seawater intrusion from the fractured carbonate aquifers. Groundwater flow and saltwater/freshwater 50% sharp interface have been modeled along the coastal area using the Ghyben eHerzberg theory. The groundwater flow simulations have been supported by field transmissivity estimations and depth measurements carried out on 44 wells during 2003. Results have shown the seawater intrusion in coastal aquifers at Jieh and Damour regions. Three well-injection barriers have been proposed. The water volumes for recharge and the barrier positions have been defined by means of groundwater 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 aquifer permeability causes clogging. A simple new model for estimating the soil-rock permeability reduction due to the well clogging has been presented. The MAR, including the soil aquifer treatment at Damour and Jieh regions, has been studied by considering aquifer transmissivity (and soil porosity) reduction caused 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 to achieve 5% of rock permeability reduction at the proposed well barriers ranged from 71 to 935 d, by changing water quality and flow rate for recharge. This study can assist regional governments with water management in areas affected by scarcity of freshwater by implementing appropriate well-barrier projects. |
| Source | Journal of environmental management (Online) 130, pp. 306–312 |
| Keywords | Fractured aquiferSeawater intrusionGroundwater artificial rechargeWell clogging |
| Journal | Journal of environmental management (Online) |
| Editor | Academic Press, London, Regno Unito |
| Year | 2013 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jenvman.2013.08.021 |
| Authors | Masciopinto C. |
| Text | 263772 2013 10.1016/j.jenvman.2013.08.021 Fractured aquifer Seawater intrusion Groundwater artificial recharge Well clogging Management of aquifer recharge in Lebanon by removing seawater intrusion from coastal aquifers Masciopinto C. Consiglio Nazionale delle Ricerche, Istituto di Ricerca sulle Acque, Reparto di Chimica e Tecnologia delle Acque, via Francesco De Blasio, 5, 70132 Bari, Italy This study investigates the feasibility of management of aquifer recharge MAR in Lebanon by designing well barriers to remove seawater intrusion from the fractured carbonate aquifers. Groundwater flow and saltwater/freshwater 50% sharp interface have been modeled along the coastal area using the Ghyben eHerzberg theory. The groundwater flow simulations have been supported by field transmissivity estimations and depth measurements carried out on 44 wells during 2003. Results have shown the seawater intrusion in coastal aquifers at Jieh and Damour regions. Three well injection barriers have been proposed. The water volumes for recharge and the barrier positions have been defined by means of groundwater 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 aquifer permeability causes clogging. A simple new model for estimating the soil rock permeability reduction due to the well clogging has been presented. The MAR, including the soil aquifer treatment at Damour and Jieh regions, has been studied by considering aquifer transmissivity and soil porosity reduction caused 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 to achieve 5% of rock permeability reduction at the proposed well barriers ranged from 71 to 935 d, by changing water quality and flow rate for recharge. This study can assist regional governments with water management in areas affected by scarcity of freshwater by implementing appropriate well barrier projects. 130 http //dx.doi.org/10.1016/j.jenvman.2013.08.021 Management of aquifer recharge in Lebanon by removing seawater intrusion from coastal aquifers Studio dell intrusione marina e delle tecniche per una gestione ottimale della ricarica artificiale con barriere di pozzi in Libano. La qualita dell acqua da immettere e posta in correlazione con gli intervalli di manutenzione dei pozzi. Tali intervalli sono importanti per evitare il clogging o l occlusione dei pozzi. JEMA_2013.pdf Articolo in rivista Academic Press 1095 8630 Journal of environmental management Online Journal of environmental management Online J. environ. manag. Online Journal of environmental management Online costantino.masciopinto MASCIOPINTO COSTANTINO TA.P04.005.010 Metodi, dispositivi di stima dei parametri idrogeologici e modelli matematici |