STUDY ON THE DIFFUSION PREVENTION OF NON-BIODEGRADABLE ORGANIC CONTAMINANTS IN GROUNDWATER BY INSTALLING POWDERED ACTIVATED CARBON MIXED CEMENT-BENTONITE CUT -OFF BARRIERS

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  • 吸着材を含むセメント・ベントナイト系地中壁による難分解性有機汚染物質の拡散防止に関する基礎研究
  • キュウチャクザイ オ フクム セメント ベントナイトケイ チチュウヘキ ニ ヨ

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A study was conducted to investigate the diffusion prevention procedure of non-biodegradable organic contaminants in groundwater by installing powdered activated carbon mixed CB cut-off barriers. Diethylene and polyethylene glycols were applied as the indicating contaminants. An estimation on the diffusion prevention ability was carried out applying advective diffusion equation. As the results, the reaching periods to breakthrough for 100 years or longer were estimated on the contaminants having approx. 200 to 1000 of molecular weights and for 40 years or longer was also estimated on the contaminants having approx. 100, when assuming both 1.0m in thickness of the cut-off barriers constructed and maintaining 0.1 of the hydraulic gradient.

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