FIELD: water treatment. SUBSTANCE: invention relates to the field of treatment of mine waters and their derivatives containing heavy metal ions and sulfates. The process of removing metal ions and sulfur from sulfate-containing wastewater is carried out in successive cascades formed by an electro-coagulator with separated electrode volumes by a filter partition and a centrifuge. Source water is fed into an anode near-electrode volume, and output is carried out from a cathode near-electrode volume at a voltage of 5-20 V and a cathode current density of 10-100 A/m², followed by clarification in a centrifugal field with a ratio of acceleration to acceleration of free fall a/g within 5-15. EFFECT: high purification efficiency. 4 cl, 3 dwg, 1 tbl.