Resumen

ADUVIRE, Osvaldo. Dimensionado de sistemas de tratamiento de aguas acidas de mina . REV. MAMYM [online]. 2018, n.5, pp. 1-11. ISSN 2519-5352.

Abstract: Mine drainages are usually acidic and contain high concentrations of Fe, Al, SO4, in addition to Zn, Mn, Mg, Cu, Cd, Pb and As, are the main source of bioavailability of contaminants that degrade the quality of aquatic ecosystems. This problem can persist for decades and even hundreds of years once the mining activity is concluded. To reverse this problem, in recent years in the mining sector in Peru, a series of standards and references for environmental control have been implemented, such as the Environmental Quality Standards (ECA) and the Maximum Permitted Limits (LMP), which together with Other legal devices are an obligatory part of the environmental management in mining, and make possible the development of sustainable mining projects. In order for the mine discharges to comply with these requirements, it is necessary for the mining companies to implement a new treatment plant or undertake the process optimization of the existing existing neutralization plants. This paper describes the results of a large number of laboratory tests and field measurements aimed at determining the total acidity of mine waters, including the protonic acidity due to pH and the mineral acidity corresponding to the metallic load. present in each effluent, this information is based on the neutralization tests because what must be killed is the acidity present in the mine waters. It also describes the dimensioning of active or chemical treatment devices with lime, based on experimental tests of neutralization, flocculation, coagulation and sequestration of solid phases and the obtaining of by-products from where metals can be recovered or recycled, which reduces the treatment costs and the development of a sustainable mining that respects the environment.

Palabras llave : Acid mine waters.