Detection of DNAPLs using RIP and GPR methods ---A Case Study

• Main Authors: Tzu-Bin Wang, 王子賓
• Other Authors: Rong-Kun Yang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/01127446371258081663

碩士 === 國立中央大學 === 應用地質研究所 === 93 === Locating Dense Non-Aqueous Phase Liquids (DNAPLs) source zones are difficult. This job is often a bottleneck for the successful remediation and/or control of polluted sites. Since DNAPLs have a very high electrical resistivity, the resistivity methods may be one of the best ways to locate a polluted zone. I This study reports the results of using resistivity image profiling method (RIP method) and ground penetrating radar method (GPR method) to detect DNAPLs in a well known polluted site. Thirteen two-dimensional (2-D) and two three-dimensional (3-D) RIP survey lines, and seven GPR survey lines were carried on the suspected polluted zones. The results indicate that four suspected DNAPLs pools at depths ranged from 12 to 15 m. Comparison made between the results obtained from the author with the former study, the residual of DNAPLs is still migrated. Based on a long term of observations, the remediation has worked well. Due to a limitation of investigating depth by using GPR method, RIP results provide more subsurface information than that of GPR method in this study.