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Treated wastewater reuse for a seawater intrusion hydraulic barrier implementation in the Llobregat delta aquifer (Barcelona, Spain): first phase
Teijón Ávila, Gloria; Tamoh, Karim; Soler Manuel, Manuel Amando; Candela Lledó, Lucila
Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids; Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. GREA - Grup de Recerca d´Enginyeria Agro-Ambiental; Universitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània
Sampling results of a wells network to monitor a hydraulic barrier for seawater intrusion control at the Llobregat delta deep aquifer (Barcelona, Spain) are presented here for the period March 2007-2008. The monitoring programme consisted in periodical water sampling and piezometric level control in wells, local network and wastewater treatment plant. The first-phase results of the sampling campaign show a decrease in electric conductivity in the wells closer to the injection points. Also a cation exchange index decrease is observed, indicating a continuous increase in the water mixing process in the wells. Regarding emerging contaminants, enhanced wastewater treatment removed the majority of contaminants before injection. The preliminary field results of hydrogeological control of injected water indicate that improved pre-treatment of wastewater has been appropriate for contaminants removal.
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia
Groundwater--Spain--Llobregat River Delta
Hydraulic barrier
Seawater intrusion
Treated wastewater
Llobregat aquifer
Llobregat (Catalunya : Delta) -- Recursos hidràulics

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