Ecological Assessment of Hydrogeochemical Characteristics of Pit Lakes of the Baleisky Ore Field (Eastern Transbaikalia)

The possibility of exploitation of the previously developed Taseyevskoye gold ore field was studied. Dewatering of the existing quarry filled with acidic water (pH 2.80–5.14) with concentrations of polluting components (Li, Be, Al, Mn, Fe, Al, Ni, Co, Cd, Zn, As, etc.), the maximum values of which are several orders of magnitude higher than environmental standards, which excludes direct discharge of pumped water into the river network, is recommended. It is concluded that it is necessary to pump water into storage tanks with its chemical treatment using specially developed technologies taking into account the composition of polluting components.