| 摘要 |
<p num="1"><br/><br/><br/>The present invention relates to a method for cleaning a soil containing <br/>contaminants comprising the steps of introducing at least one heat-conductive <br/>pipe, which is in working condition under negative pressure, and provided with <br/>perforations in said soil, heating said soil by thermal conduction by <br/>circulating a heated fluid through said heat-conductive pipe thereby obtaining <br/>a contaminant vapor; whereby said contaminant vapor is forced into the heat-<br/>conductive pipe through a negative pressure present herein, further <br/>transporting said contaminant vapor in said heat-conductive pipe out of the <br/>soil, and incinerating said contaminant vapor in order to at least partly <br/>remove said soil contaminants. The method also involves the step of re-using <br/>the heat energy obtained by incinerating said contaminant vapor for heating <br/>said soil in order to vaporize the remaining contaminants in said soil. The <br/>present invention also relates to a nearly closed loop system for cleaning a <br/>soil containing contaminants.<br/>
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