| 摘要 |
The apparatus of the invention comprises a plurality of vessels, each vessel having a soil intake opening, a soil discharge opening, and a soil motivator associated therewith. The apparatus also has a liquid delivery system configured to deliver a liquid into at least one of the vessels, and a drainage system configured to collect the liquid and the contaminants. The vessels are arranged in sequence so that soil discharged from the discharge opening of one vessel is directly deposited into the intake opening of the next vessel. The method of the invention comprises the steps of: introducing the contaminated soil into a first vessel; washing the soil with a first liquid cleaning agent; passing the soil through a plurality of vessels in sequence wherein said first liquid cleaning agent is removed by a second liquid cleaning agent and water; draining said second liquid cleaning agent and water from the soil; and, rinsing the soil with water.
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