Implementación, a Nivel Laboratorio, de un Sistema de Tratamiento Pasivo Tipo Sustrato Alcalino Disperso, para la Remediación de Metales Pesados de Drenaje Ácido de Mina

Abstract

The present investigation is proposed evaluate the performance of the Implementation of a treatment type substrate alkaline dispersed for remediation of acid mine drainage in the abandoned mine Pacchampamba which belongs to Zaruma-Portovelo mining district, in order to compare the efficiency obtained for removal of divalent metals such as trivalent along the line of treatment in two experiments performed in parallel to the same conditions, the experiment consisted of two connected columns in series, called: DAS-Ca (for the Elimination of trivalent metals Fe3+ and Al3+) and DAS-Mg (for removing divalent metal Cu2+, Pb2+, Zn2+, Cd2+, Mn2+, Ni2+ and Co2+), with intermediate and ends pools to induce to process of natural oxidation, at the end the experiment is realized the categorization of generated waste for the columns based on European and American standards, obtaining a metal removal efficiency of a 95%, with respect, the generated waste, the leaching tests performed indicate that these may be considered non-hazardous for the environment and do not need any treatment prior before being deposited in some type of landfill.