TRACE ELEMENTS SPECIES MIGRATING FROM THE SULFIDE-BEARING MINING WASTE
The results of experiments on water-rock interaction for sulfide-bearing waste from four mining production plants are presented. Flow-type experiments have allowed to distinguish two groups of technogenic systems on the drainage’s type produced: acidic drainage with total concentrations of trace elements from 100 mg/L to 30 g/L and neutral alkaline wastewater with total concentrations of trace elements from 1 to 1000 mg/L. Flow experiments proved the danger of drainage waters with neutral and subalkalic pH values due to high concentrations As and Be - the elements of the first hazard class.