The investigation has been developed based on the treatment of Acid Mine Drainage (AMD) naturally emitted within the operations of the La Zanja mining unit, said Acid Drainage is the result of the oxidation of metal sulfides, in the presence of atmospheric oxygen. and water being one of the main sources of contamination of surface and groundwater, these drainages are toxic to varying degrees for man, fauna and vegetation because, having a low pH, they contain a large amount of solids in suspension with a high content of sulfate and metals (Fe, Al, Mn, Zn, Cu, Pb, Hg, Cd, Ni), of the order of several hundred milligrams per liter. For the treatment of DAM, active treatment methods are used that consist of treating with alkaline chemical reagents to raise the pH, neutralize the acidity and precipitate the metals, being the HDS process (high density sludge) used in the San Pedro Sur plant an...