7-3-1 武蔵野クリーンセンター既存焼却施設における廃プラ混合焼却に伴うダイオキシン類の長期的排出挙動(7-3 環境対策,Session7 環境対策・リサイクル,研究発表)

概要

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In the present study the change in dioxins concentrations after the start of mixed incineration is reported comparing the results before it from 1996, before replace of electric precipitators with bagfilters in 1999-2000. As a result, the exhaust dioxins concentration at the stack has gradually decreased and was finally 0.011 ng-TEQ/m^3N in 2009. The value was almost one % of the value of 0.97 ng-TEQ/m^3N in 2000 when the plastic refuse was collected as incombustibles without mixed incineration. During the course, the exhaust dioxins concentration at the stack was usually higher than that at the dust collector exit, which suggests the accumulation of passed high concentration of dioxins in some stagnant zone in the flue gas duct from the dust collector exit to the stack. The gradual reduction in dioxins concentration may also be explained by its gradual release.
2011-08-09