Abstract
This paper describes the outline of the new method for ash treatment, ash roasting. Ash from incinerator includes various pollutants. We must treat heavy metals and dioxins for ash recycling. Heavy metals of ash, lead, mercury and cadmium for example, volatilize to gas through roasting furnace. Dioxins is almost destroyed at high temperature over 1000℃. Demonstration testing verified that (1) leaching of heavy metals from ash can be decreased below standards of leaching from soil, (2) efficiency for dioxins decrease is over 99%. We will continue to expand the application of the ash after roasting.
