Contaminated soil cleaning and classification treatment system and contaminated soil cleaning and classification treatment method

摘要

PROBLEM TO BE SOLVED: To provide a cleaning and classification treatment system for contaminated soil and a cleaning and classification treatment method for contaminated soil in which the decontamination rate can be increased. SOLUTION: A crusher 10 for crushing contaminated soil A1 to which water W is added, and a slurry-like earth and sand A4 obtained by classifying a mixture A2 of crushed contaminated soil A1 and water W and separating gravel A3. Wet sieving machine 20 and classifying machine 30 for classifying slurry-like earth and sand A4 into sand content A5 and fine particle content A6, and a classification machine 30 provided in front of the classifying machine 30 to add cation I to contaminated soil A1. A contaminated soil cleaning and classification treatment system 1 comprising a cation addition machine 41 and a collision jet treatment device 50 provided after the wet sieving machine 20 and before the classification machine 30. [Selection diagram] Fig. 1