Simulación de un proceso de tratamiento de agua residual en el programa dwsim, para efluentes mineros en el Cantón Portovelo.

Abstract

In Ecuador, responsibility in relation to mining refers to both social and environmental. In fact, the main problem deals with the slopes coming from the mining industries. Even so, it can be noted that medium and large-scale mining is considered one of the promoting activities for the growth of the country's economy. One of the environmental processes commonly used for gold extraction are cyanide salts (NaCN and KCN) which strongly contaminate the soil and water resources, due to their high toxicity and accumulation in organisms, they can also negatively affect or destroy gold. habitats. In the province of El Oro, there is a great contamination in rivers by the minerals exploited within the mines, using some methods for the metallurgical process where the extraction of some minerals that are not renewable and in turn are very toxic. Within the beneficiation plant, several minerals enter, such as Fe, Ni, Au, As, in addition to this, HCN enters, which represents a small amount regarding the other minerals, however, to carry out a good reduction of the contaminant, some important parameters to consider, among them the amount of H2O2 dosing added in the CSTR reactor that helped considerably in the degradation of the CN, where in comparison with scientific bibliographical sources, it was possible to obtain results quite close to reality, confirming in this way the reduction of cyanide to a percentage of 99.94.