METHOD FOR DECONTAMINATING SOIL, AND INSTALLATION FOR IMPLEMENTING SAME

摘要

The invention is intended for the comprehensive decontamination of soils contaminated with mercury (amalgam) and/or radionuclides. A method for decontaminating soil comprises preparing a slurry by mixing soil with water at a soil sampling location, separating off a fraction having a fragment size exceeding 100 mm in a slurry preparation module, disintegrating the slurry and soil aggregates in a disintegration module, and separating off plant residues and a fraction having a fragment size exceeding 10 mm. The slurry is then additionally condensed in a condenser module. The slurry is sent to a hydroclassification module, where it is separated into a sand fraction and a fine particle fraction. The fine particle fraction is sent to a dewatering module in the form of a concentrator, where it is condensed and dewatered for subsequent burial. If mercury (amalgam) is present in the soil, this is separated off in the condenser module. The invention is directed toward decontaminating soils of mercury, insoluble forms thereof, amalgam and/or radionuclides in a unified technological process without using reagents, and reducing the amount of secondary wastes requiring burial.