Evaluation and Countermeasures of Toxic Substance in Molten Slag Derived from Municipal Solid Waste

Abstract

To use the molten slag derived from municipal solid waste, the method of decreasing environmental safety and the lead content on a slag was examined. It can use as a concrete raw material because there are a few changes in the concentration of SiO2 , Al2O3 and CaO contained in the molten slag. Enough control is necessary because a change in the Pb content is large. As for the concentration of Pb, Sn and Zn in the molten slag, it found that positive correlation was shown. It can think about the cause increasing Pb content in the melting slag with the solder, the flint glass and the light bulb and porcelain. The plastic other than food packaging contains trace amounts of the heavy metals. The separation of these wastes is necessary for the decrease in Pb content of the molten slag.