パイロット規模の連続式実験装置によるＰＣＢ汚染土壌の処理

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書誌事項

タイトル別名
  • Remediation of PCB-contaminated Soil by the Continuous Pilot Scale Experimental Plant.
  • パイロット キボ ノ レンゾクシキ ジッケン ソウチ ニヨル PCB オセン

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説明

The Base Catalyzed Decomposition (BCD) process has been applied to contaminated soil in two successive steps: soil treatment including thermal desorption of PCBs with partial dechlor-ination from soil; and dechlorination of the desorbed PCBs after condensation. A continuous pilot scale experimental plant was fabricated to examine the characteristics of BCD process in a soil treatment process. The pilot plant, which consists of a reactor, a pre-treatment equipment, and a post-treatment equipment, can be conveyed on a trailer.<BR>Treatment of soil samples containing 32 to 72 mg-PCBs / kg-soil resulted in a 1 mg / kg or less residual PCBs, accounting for a 99.5% removal of PCB from the soils. PCBs in the sample soil were desorbed with partial dechlorination, and the most of the desorbed PCBs were collected as a condensate. Because PCBs in flue gas mostly existed as mist, a compact ejector was sufficient to collect PCBs in the flue. Throughout the treatment of PCB-contaminated soil by the BCD process, no formation of Dioxins were observed. Applicability of the BCD process to a soil contaminated by PCBs was proved.

収録刊行物

  • 環境化学

    環境化学 6 (2), 183-193, 1996

    一般社団法人 日本環境化学会

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