環境資源工学
Online ISSN : 1349-9262
Print ISSN : 1348-6012
ISSN-L : 1348-6012
論説報文
中間空気吹込式ロータリーキルンを用いた有機塩素化合物含有土壌の無害化処理
上田 浩三中野 憲一原田 浩希宮原 和仁川西 龍一芝本 真尚
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2010 年 57 巻 1 号 p. 12-19

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Soil contaminated with PCBs and dioxins was remediated using an intermediate air intake rotary kiln with a low oxygen process combining high-temperature (1100°C or higher) oxidation. The concentration of dioxins in the treated soil and burned ash was 0.0038–6.1 pg-TEQ/g and the concentration of PCBs was 0.91–3.3 ng/g. The dioxin concentration in the treated exhaust gas was 0.016/0.011 pg-TEQ/m3N and the PCB concentration was 14/4.7 ng/m3N. These results were all cleared for Japanese Environmental regulations. It also revealed that PCB particles could be easily collected using a bag filter because the majority of PCBs in the flue gas emitted from the kiln were in particle form. In addition, these particle-bound PCBs were not regenerated in the kiln or secondary combustion chamber. It is resulted that this combined process is suitable for the remediation of contaminated soil containing waste.

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