TREATMENT METHOD FOR RENDERING FLUORINE-CONTAMINATED SOIL HARMLESS

摘要

PROBLEM TO BE SOLVED: To provide a treatment method for rendering fluorine-contaminated soil harmless which can reduce the content of fluorine in fluorine-contaminated soil and, at the same time, can satisfactorily reduce the elution amount of fluorine.;SOLUTION: Fluorine-contaminated soil, containing fluorine in soil, is heated to a temperature of 400 to 1,200°C in a rotary kiln 1. An aqueous solution containing phosphorus ions is added to the heated fluorine-contaminated soil by a showering mechanism 11 to render the fluorine-contaminated soil harmless.;COPYRIGHT: (C)2007,JPO&INPIT