PROCESS OF DECONTAMINATION OF METAL-CONTAMINATED SOILS

摘要

FIELD: decontamination of soil. SUBSTANCE: invention is related to hydrometallurgical method of clearing of soils contaminated with metals. Process includes stage of basic leaching to cause solution of removed metals, stage of pressure grouting to cause precipitation of elements in the form of metal which is carried out due to electrochemical exchange with zinc dust produced at stage of electrolysis of solution which goes on at stage of pressure grouting. In accordance with invention additional injection of zinc is conducted at finish of stage of leaching in the form of percolate from waste of ferrous metallurgy, especially of dust of electrometallurgical plant. EFFECT: improved efficiency of process.