- Investigation for TCE Migration and Mass Discharge Changes by Water Table Rising in Porous Media
- Lee, Dong Geun;Moon, Hee Sun;Lee, Kang-Kun;
- School of Earth and Environmental Sciences, Seoul National University;Groundwater Department, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources;School of Earth and Environmental Sciences, Seoul National University;
- 투수성 매질 내에서의 지하수위 상승에 따른 TCE 거동특성 및 오염물 이동량 변화 연구
- 이동근;문희선;이강근;
- 서울대학교 지구환경과학부;한국지질자원연구원 지구환경본부 지하수연구실;서울대학교 지구환경과학부;
Abstract
In this study, three dimensional and two dimensional laboratory experiments were conducted to investigate the effect of water table rising on DNAPL migration, contaminants mass discharge ($M_d$ ), and residual NAPL distribution. The accumulation of TCE in unsaturated zone was observed in both two and three dimensional experiments. This implies DNAPL sources could exist in unsaturated zone at contaminated sites. It has been investigated that the TCE concentration is proportional to the areal ratio of residual TCE. This means the residual TCE obviously could affect the TCE concentration in aquifer system. The results of the two-dimensional experiment indicated that the contaminant sources in unsaturated zone could lead the $M_d$ increasing with water table rising and the source zone heterogeneity could also highly affect the $M_d$ .
Keywords: DNAPL;TCE;Migration;Contaminant mass discharge;Water table rising;
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