Abstract
In this study, the removal efficiency of dioxins (polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and coplanar polychlorinated biphenyls) by the zeolite was investigated by setting artificial zeolite derived from fly ash in the exhaust gas line of a small size incinerator made for demonstration. When model wastes that contains 5 % polyvinyl chloride were incenerated, the concentrations of dioxins in the final treatment gas were 0.30 to 0.51 ng-TEQ/m3N, which were adequately below the regulation (5 ng-TEQ/m3N) . In order to reduce the total dioxins discharged from small size incinerators, the following measures are effective, that is, the removal treatment of dioxins in exhaust gas using the artificial zeolite, non-heating degradation treatment of dioxins in used zeolite and ashes, and regular monitoring of dioxins in exhaust gas using simplified sampling filter.
