硝酸性窒素汚染地下水に対する浄化壁の浄化効果の長期持続性 －浄化壁設置8年後の地下水水質調査結果－

副島 敬道; 寺尾 宏; 伊藤 雅子; 今村 聡

doi:10.5917/jagh.54.139

RESEARCH-IN-PROGRESS

Long term remediation effects of permeable reactive barrier for nitrate contaminated groundwater

—The results of groundwater monitoring in 8 years after the barrier installed—

Takamichi SOEJIMA, Hiroshi TERAO, Masako ITOH, Satoshi IMAMURA

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Keywords: groundwater, nitrate-nitrogen, denitrification, reactive barrier, in-situ remediation, biodegradable plastics

JOURNAL FREE ACCESS

2012 Volume 54 Issue 3 Pages 139-150

DOI https://doi.org/10.5917/jagh.54.139

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Abstract

The permeable reactive barrier (PRB) which consists of biodegradable plastics and iron powder for reactants were developed and installed on Kagamigahara City, Gifu Prefecture in 2000. Nitrate concentration of groundwater permeated by the PRB has decreased from 10 mg/L to 0.1 mg/L for the first 3 years of monitoring. Groundwater quality of monitoring wells was investigated in 2008 after eight years from the installation. Concentration of nitrate-nitrogen has still maintained at the low level, and effect of PRB has continued.

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