CLARIFICATION METHOD AND SEPARATING EQUIPMENT FOR POLLUTED SOIL

摘要

PROBLEM TO BE SOLVED: To provide a clarification method for polluted soil which reduces a clarification cost for polluted soil by improving a cleaning efficiency. SOLUTION: A soil B having a larger particle size than the prescribed one which makes it easy to separate the contaminants is firstly separated from the soil to which oil and heavy metals adhere by using a sizing machine to these separated soils A and B are added water respectively, and put into the cleaning machines 3 and 7 to remove the contaminants adhered to the surface of the soil through friction among the soils in the cleaning machines 3 and 7. Water containing the soil and contaminant is put into a separating tank full of water and the separating equipment 4 and 8 with a vibrating screen and an air supply means. in the separating tanks of these separating equipment 4 and 8, the soil is settled down by giving vibration and injecting air bubbles, and the soils and contaminants are separated.