Variación en los parámetros del sistema calcocarbónico del agua subterránea por infiltración del lixiviado del vertedero de La Mina (Málaga)

Abstract

The leachate produced ¡n La Mina landfill has affected the groundwater quality in its surroundings. The chemical composition of the waters from two wells points and the main spring of the aquifer have been controlled. Great amounts of calcium, magnesium and inorganic carbon have been detected In the water samples of the affected points. A hydrochemistry computer code has been used to calculate the PC02 and the saturation indexes of calcite, aragonite and dolomite. The PC02 values are higher than the calculated in the aquifer in natural conditions, because it comes from the C02 produced in the landfill.

PC02 is the main parameter that controls the dolomltlc marbles dissolution and the amount in calcium, magnesium and Inorganic carbon In the water samples. All these concentrations produce an increase In the saturation Indexe