都市ごみ焼却におけるPCDDs/DFsのマテリアルフローに関する研究

書誌事項

タイトル別名
  • Material Flow Analysis of PCDDs/DFs in a Municipal Solid Waste Incineration System
  • トシゴミ ショウキャク ニ オケル PCDDs DFs ノ マテリアルフロー

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抄録

A large quantity of PCDDs/DFs is discharged from municipal solid waste incinerators in Japan. In this study, a material flow of PCDDs/DFs was analyzed in a municipal solid waste incineration system. As a result, the total amount of PCDDs/DFs released, which contained PCDDs/DFs not only from emission gas but also from residues, was 160 μg TEQ/waste-ton and exceeded the amount of PCDDs/DFs input into the system (1.4-50 μg TEQ/waste-ton), and more than 90 percent of PCDDs/ DFs released was contained in fly ash. As a consequence of the scenario analysis, in the case of controlling incinerators with high technologies, the total amount of PCDDs/DFs released was ex-pected to be 3.65-34μg TEQ/waste-ton, which was nearly equal to or below the amount of PCDDs/ DFs input. In the case of melting or heating dechlorination of fly ash in addition, the total amount of PCDDs/DFs released was expected to be reduced to 0.85-4.6 μg TEQ/waste-ton.

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