Fixation of heavy metals in washed incinerator ash washed municipal solid waste.

摘要

Very fine ash generated from the incineration of municipal solid waste (MSW) when placed in landfills under acidic conditions SUAVES leachable lead and cadmium. It PRESENTS A PROCESS FOR THE STABILIZATION OF HEAVY METALS FOUND IN THIS flyash CONSISTING calcining, IN THE PRESENCE OF A STREAM OF GAS CONTAINING OXYGEN TO A HIGHER THAN 375 TEMPERATURE (DEGREES) C. and a lower SUBSTANTIALLY 800 (degrees) C APPROXIMATELY for periods of time ranging from 170 seconds to 5 hours or so, the flyash that has been subjected to purification LIME FOR acid gas removal. AS ASH VERY FINE OF TREATED MSW SUBSTANCES TO PROVIDE SOME leached CONTAINING HEAVY METALS concentrations lower than the limit REGULATOR EPA.