| 摘要 |
A method for treating contaminated soil comprises the steps of analyzing a soil sample from a site and identifying and quantifying any contaminants; selecting a treatment composition appropriate to the contaminants; calculating the amount of treatment composition required; excavating a volume of contaminated soil from the site; combining the treatment composition with the excavated soil; mechanically mixing the excavated soil with the treatment composition; aerating the treated soil by passing it over screening machinery; optionally conditioning the treated soil; and at least one of: back-filling the site with the treated soil, storing the treated soil and/or disposing of the treated soil. Typically, the treatment composition comprises calcium oxide (quicklime). The treatment composition may be added in an amount of 2-12 wt.% relative to the weight of soil to be treated. The soil may be contaminated with volatile organic compounds, hydrocarbons, or heavy metals. |
