Brackish groundwater desalination by reverse osmosis in southeastern Spain. Presence of emerging contaminants and potential impacts on soil-aquifer media

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Title: Brackish groundwater desalination by reverse osmosis in southeastern Spain. Presence of emerging contaminants and potential impacts on soil-aquifer media
Authors: Valdes-Abellan, Javier | Candela, Lucila | Jiménez-Martínez, Joaquín | Saval Pérez, José Miguel
Research Group/s: Ingeniería del Terreno y sus Estructuras (InTerEs) | Tecnología de Materiales y Territorio (TECMATER)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: Brackish groundwater | Emerging contaminants | Reverse osmosis | Aquifer-soil impacts | Water quality
Knowledge Area: Ingeniería Hidráulica | Ingeniería de la Construcción
Issue Date: 28-Feb-2013
Publisher: Taylor & Francis
Citation: Desalination and Water Treatment. 2013, 51(10-12): 2431-2444. doi:10.1080/19443994.2012.747506
Abstract: Desalinated brackish groundwater is becoming a new source of water supply to comply with growing water demands, especially in (semi-) arid countries. Recent publications show that some chemical compounds may persist in an unaltered form after the desalination processes and that there is an associated risk of mixing waters with different salinity for irrigation. At the university of Alicante campus (Spain), a mix of desalinated brackish groundwater and water from the existing aquifer is currently applied for landscape irrigation. The presence of 209 emerging compounds, surfactants, priority substances according to the 2008/105/EC Directive, 11 heavy metals and microbiological organisms in blended water and aquifer samples was investigated. Thirty-five compounds were detected (pesticides, pharmaceuticals and surfactants) among them two priority substances α-endosulfan and Ni were found above the permitted maximum concentration. Blended water used for landscape irrigation during the summer period is supersaturated with respect to carbonates, which may ultimately lead to mineral precipitation in the soil-aquifer media and changes in hydraulic parameters.
Sponsor: This study forms part of the CONSOLIDER-TRAGUA and CGL2010-22,168-C03-02/BTE projects financed by the Ministry of Science and Innovation of Spain.
ISSN: 1944-3994 (Print) | 1944-3986 (Online)
DOI: 10.1080/19443994.2012.747506
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 Balaban Desalination Publications
Peer Review: si
Publisher version:
Appears in Collections:INV - INTERES - Artículos de Revistas
INV - TECMATER - Artículos de Revistas
INV - IngHA - Artículos de Revistas

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