To provide a method for making incineration ash harmless which can simultaneously make heavy metals and decomposition resistant substances harmless, can be applied easily to an existing facility, and can reduce facility costs and treatment costs and an apparatus for the method.
In the apparatus for making the incineration ash harmless has a kneader 12 which supplies a stabilizer containing a solidifying agent comprising cement and/or a heavy metal immobilizing agent comprising a chelating agent to the incineration ash discharged from combustion apparatuses such as an incinerator, a melting furnace, and a boiler and stabilizes the heavy metals contained in the ash while kneading. The kneader 12 has a means for supplying a medium for producing hydroxyl radicals from hydrogen peroxide 24 and ozone 25, and the decomposition resistant substances such as dioxins contained in the ash are oxidized/decomposed in the presence of the hydroxyl radicals to be made harmless.
KISHIDA ASAKO
KAWASAKI YUSUKE
OSE KIMITOSHI
