Mining Recirculated and Waste Water Treatment Using Adsorbents Made of Zeolite-Bearing Rocks from the Khola Deposit
K. K. Razmakhnin1,2, L. V. Shumilova1, I. B. Razmakhnina1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Chita, Russia
2Environmental Industrial Policy Center-Research Institute, Moscow, Russia
Keywords: Zeolite-bearing rocks, Khola deposit, purification, recirculated and waste water, arsenic, sorption, best available technologies, beneficiation, adsorption plant
Abstract
It is found that zeolite-bearing rocks from the Khola deposit can be dressed toward manufacture of high-quality sorbents to remove impurities from waste and recirculated water, and the relevant processing circuit is proposed. The mineral composition of the Khola zeolite-bearing rocks is described, and their electromagnetic and electrostatic separation results are reported. The layout of a continuous adsorption plant using zeolite-bearing rocks is developed. The sorption capacity of original and dressed zeolite-bearing rocks from the Khola deposit is tested in model solutions. The test data of arsenic adsorption using zeolite-bearing rocks are presented. The efficiency of zeolite-bearing rocks in removal of arsenic, fluorine, zinc, lead, nickel and chrome from a model solution of waste water is evaluated and compared. The prospects of using zeolite-bearing rocks in mine waste water treatment and in removal of impurities is assessed. The resultant purification boasts high-value results which ensure the required quality of waste water.
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