Process for decontaminating soils polluted by at least one pollutant among hydrocarbons, dioxin and phenols

摘要

A process for decontaminating soils polluted by at least one pollutant among hydrocarbons, dioxin and phenols, comprises the operating steps of: putting a first predetermined quantity of polluted soil in a reactor (4); adding to the polluted soil a first aqueous solution containing a second predetermined quantity of one or more enzymes, thus obtaining a solid - liquid mass; stirring the solid - liquid mass for a predetermined time, so that said one or more enzymes catalyse a microbial degradation of the pollutant present in the polluted soil; and separating (7) a solid part from the solid - liquid mass, thus obtaining a residual aqueous suspension.