Evaluation of effectiveness of composite sorbent for rehabilitation of contaminated sites of Karabash industrial area

The production of non-ferrous metals causes the formation of a large number of man-made waste and acidic effluents containing heavy metal cations. The problem of rehabilitation of contaminated areas is relevant to the Chelyabinsk region, especially for Karabash industrial district. Sorption technologies to purify extended natural objects are currently not used to the full extent because of the lack of effective materials. A synthesized composite sorbent obtained is characterized by irreversible sorption of heavy metals. It does not require additional chemical treatment when being utilized and it is capable of mineralization. So, it does not require utilization. The possibility of using the composite sorbent in immobilizing cations of heavy metals from water and soils of Karabash city was studied. The high efficiency of sorption technology was shown. For the plants with a high degree of contamination it took a week to get the performance standards on pollutant content of the first and second class of danger, e.g. arsenic, cadmium, lead, zinc. It is recommended to use the composite sorbent for the purification of water and soils and for the dumping of reservoirs and technological areas of slime storage for non-ferrous metallurgy plants.