IDENTIFICATION OF RESIDUAL DNAPL SOURCE DISTRIBUTION: EXPERIMENTS AND NUMERICAL SIMULATION

Gas sampling;Residual Source;Unsaturated zone;Fluctuating water table;STOMP;가스 모니터링;잔류상 TCE;불포화대;지하수 변동;550

JOUN, WON-TAK자연과학대학 지구환경과학부 ;

University:서울대학교 대학원

关键词: Gas sampling;    Residual Source;    Unsaturated zone;    Fluctuating water table;    STOMP;    가스 모니터링;    잔류상 TCE;    불포화대;    지하수 변동;    550;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/131389/1/000000020989.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

3) mixed condition of 1) and 2). The laboratory experiments were performed under the condition of water table fluctuation.One-dimensional column experiment was performed to verify the usefulness of gas analysis method for the source location identification and the numerical simulator (STOMP) suitability. To simulate the situation that the groundwater level is up and down like field data, a two-dimensional model tank (70504 cm) was used for the laboratory scale test. Concentration changes of contaminant (TCE) were calculated using the STOMP Water-Oil-Air (STOMP-WOA) operational mode in a two-dimensional axisymmetric domain.TCE concentration in extracted soil gas (or unsaturated zone gas) showed changes opposite to the water table change as the concentration increased when water table decreased. Numerical simulation with the STOMP simulator also showed the trend similar to the experimental data.