Method and system for cleaning a soil containing contaminants

摘要

The present invention relates to a method for cleaning a soil containing contaminants comprising the steps of heating said soil to a temperature sufficient to cause vaporization of said soil contaminants thereby obtaining a contaminant vapor; extracting said contaminant vapor containing said soil contaminants out of said soil; incinerating said contaminant vapor in order to at least partly remove said soil contaminants, and re-using the heat energy obtained by incinerating said contaminant vapor for heating said soil in order to vaporize the remaining contaminants in said soil. The present invention also relates to a nearly closed loop system for cleaning a soil containing contaminants.