EFFECTIVENESS OF USING BENTONITE CLAY IN THE PURIFICATION OF MINE WATER IN THE MINING INDUSTRY

Bentonite from the Taganskoe deposit in the East Kazakhstan region has been studied for the purpose of using it for wastewater treatment of metallurgical enterprises. To study the physicochemical characteristics of activated particle sorbents, modern research methods were used: atomic absorption spectrometry, inductively coupled plasma mass spectrometry, polarography and X-ray fluorescence spectroscopy, electron microscopy.

Thermal and thermoacid activation of bentonite is considered. The structure of the activated forms was determined using an electron microscope. When comparing microstructures of natural and activated types using an electron microscope, it was shown that the maximum change in structure occurs during thermal acid activation. Natural and activated forms of bentonite have been used to purify wastewater from polymetallic deposits. At this time, it was noticed that the maximum absorption of Cu²⁺, Pb²⁺, Cd²⁺, Zn²⁺ ions (94-99.6%) is realized when using thermal acid-activated bentonite up to the maximum permissible concentrations. The study shows that thermal acid-activated bentonite from the Taganskoye deposit is effective in treating wastewater from heavy metals at metallurgical enterprises.