Hydrochemical characterization of an acid mine drainage-affected reservoir: the Sancho Reservoir,Huelva, southwest Spain |
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| Authors: | JC Cerón ML de la Torre J Borrego M Santisteban T Valente |
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| Affiliation: | 1. Centro de Investigación para la Ingeniería en Minería Sostenible (CIPMS), Escuela Técnica Superior de Ingeniería, Universidad de Huelva, Ctra. Palos de la Frontera s/n, ES-21218 Palos de la Frontera, Huelva, Spain;2. Centro de Investiga??o Geológica, Ordenamento e Valoriza??o de Recursos, Departamento de Ciências da Terra, Universidade do Minho, Campus de Gualtar, P-4710-057 Braga, Portugal |
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| Abstract: | AbstractThe objectives of this study were to discover the relationship between variables in a water reservoir and the hydrochemical variations related to acid mine drainage (AMD), and to describe the horizontal stratification related to vertical salinity and variations in metals present in the region. The information obtained may be used for establishing risk evaluation criteria and to design future remediation strategies, which could be useful for new dams. The hydrochemical characterization was based on a sampling campaign performed in October 2011. A total of 28 samples, at 1-m-deep intervals, were obtained. The hydrogeochemical study of the polluted reservoir shows that the dilution effect is not sufficient to neutralize AMD contributions from mining activity. Sampling carried out from the surface water to the deepest points reveals stratification of the reservoir that allows it to be included in the group of monomictic and holomitic lakes. Editor D. Koutsoyiannis; Associate editor M.D. Fidelibus |
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| Keywords: | acid mine drainage water reservoir natural attenuations factor analysis Iberian Pyrite Belt stratification hydrological characterization pollution surface waters remediation |
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