Caracterización Química e Isotópica Preliminar del Basurero Municipal de Gualeguaychú, Provincia de Entre Ríos, Republica Argentina

PANARELLO, H.O.; DAPEÑA, C.; OSTERA, H. A.; STOCKLI , F.

Río Cuarto

Congreso; IV Congreso Hidrogeológico Argentino; 2005

UNRC IHA

ABSTRACTWithin the framework of the ANPCyT project 12243, with the logistic support of theMunicipality of Gualeguaychú, Entre Ríos, we started a geochemical-isotopical andgeophysical investigation of solid waste disposals. In this work, we present a chemical and isotopic characterization of waters present in the landfill. From the obtained results, we can conclude that surface waters, pools and arroyos show isotope values corresponding toevaporated meteoric waters. This isotopic signature could be used as a tracer in groundwater infiltration. Water from a windmill located outside the landfill exhibits the isotopic value and characteristics of local rain water, sodium bicarbonate type and low electric conductivity, reflecting conditions prior the landfill settlement. Conversely, the Irazusta windmill located inside the landfill shows sodium chloride type water, higher electric conductivity and isotope values within an evaporation line as well as more tritium content, indicating a potential contribution of landfill water. A large 2H, 18O y 3H record of precipitation and a more detailed leachate, groundwater and surficial water sampling will allow to establish the pollution mechanisms.Keywords: Environmental isotopes, hydrochemistry, landfill, Gualeguaychú.