TREATMENT OF INCINERATION ASH OF WASTE

摘要

PROBLEM TO BE SOLVED: To provide a waste incineration ash treatment method capable of stabilizing a harmful substance such as a heavy metal contained in waste incineration ash such as industrial waste incineration ash or urban waste refuse incineration ash discharged from the water tank of a wet ash cooling apparatus without being accompanied by a practical problem such as stabilizing capacity, the corrosion of the apparatus or the generation of scum in the water tank. SOLUTION: A harmful substance treatment material based on a soluble silicate is injected into the cooling water (w) of a thrust rod incineration ash discharge apparatus having a thrust rod 3 delivering incineration ash (a) charged in the cooling water (w) in a water tank 1 from the water tank 1 and waste incineration ash (a) is charged in the cooling water (w) in the water tank l from an ash chuter 2 and the slurry like incineration ash (a) delivered from the cooling water (w) by the thrust rod 3 is stagnated within a cooling apparatus and aged in the state held to 40-70V by the heat generated from incineration ash (a) and cooling water (w) to be discarded to an ash pit 4.