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This study was conducted to investigate emission characteristics of hazadous pollutants producted from solid waste and sewage sludges at incinerator and waste-water treatment area in Seoul and Kyounggi. In this study we analyzed the concentration of Fe, Pb, Cu Cr^6+, Zn, Mn, Cd, As, Hg, Si, Al, Ti, Ca, Mg, Na and K of sewage sludges in 3 area(WA, WB, WC). Also, we analyzed the component of SiO₂, Al₂O₃, Fe₂O₃, CaO, MgO, K₂O, Na₂O, TiO₂, P₂O_5 and Ig.loss Of bottom and fly ashes in incinerators(5 area). SiO₂ which is available to rotect air pollution was estimated high especially in bottom ashes.
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