THE TREATMENT POSSIBILITY OF MINING DRAINAGE FROM HORIZON 830 IN THE SASA MINE, MACEDONIA

The drainage system on mining area Sasa consists of surface water from the rivers Crvena, Svinja and Kozja which are flowing from field of ore deposit, and with other small mountain tributaries that flow into the River Kamenichka. The results of the measurements show that in all samples from surface waters are detected increased concentrations of heavy and toxic metals, except for the water of the River Crvena. These increased concentrations are a consequence of historical anthropogenic impact of acid mine drainage from old inactive pits, as well as the impact of current activities in mine SASA primarily from the mining drainage from the active horizon 830. The paper shows results of the treating mining drainage samples from horizon 830, by applying the method of passive treatment "diversion wells". The results show that the use of combined treatment of diversion well and treatment with flocculants gives satisfactory results in terms of reduced concentrations of metals, dissolved and suspended solids.