강원도 및 경기도 소재 유류오염지역의 수질특성, 발현 생분해능과 오염물질 저감속도

초록

This study focused on the groundwater quality, biodegradability and attenuation rate at the petroleum contaminated sites of Kangwon and Gyeonggi Provinces, Korea. For groundwater quality, Kangwon site showed chemical compositions of Ca −SO4+ Cl, Ca − HCO3 and Na + K − HCO3 types, while Gyeonggi site showed chemical compositions of Ca − SO4, Ca −HCO3 and Na-HCO3 types. Na + K − HCO3 and Na − HCO3 types were detected only in February. Among many biodegradation processes, the majority was attributed to biodegradation from denitrification in both area. In Kangwon site,biodegradation from denitrification occupied 63.5%, and in Gyeonggi site it was 39.45%. Biodegradation from the most efficient aerobic respiration occupied 7.12% in Kangwon site, while Gyeonggi site in it did 27.29%. Point attenuation rate of BTEX in Gyeonggi site (GW-22) was 0.0182 day−1, half life of BTEX was 84 days, and thus 124 days (0.34 year)would be required to clean up this site. Mean of point attenuation rate of TPH in Kangwon site was 0.0088 day−1, mean of half life was 257 days, and thus 462 days would be required to clean up the site. Mean of point attenuation rate of TPH in Gyeonggi site was 0.0387 day−1, mean of half life was 55 days, and thus remediation time was calculated as 99 days.

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