The Influence of Heterogeneity on NAPL Vertical Transport

• Main Authors: Po-Tsun Lee, 李柏村
• Other Authors: Ming-Chee Wu
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/14116759398349691155

碩士 === 國立成功大學 === 地球科學系碩博士班 === 93 === Non Aqueous Phase Liquid (NAPL) is a contaminant which is not solutable in water, its characteristic of moving across the aquifer is effected by its physical properties and the heterogeneity of the porous materials. The objective of this study is to conduct a one-dimentional sand column test to understand the influence of geological heterogeneity for NAPL transport. In one-dimentional sand column test, the occurence of NAPL transport is essentially identical when the water flow rate is between 0.25 cm/sec to 1.179cm/sec. However, the time that TCE pass through the column will increase when the thinkness of sandstone layer is larger than 10 cm; the same condition is will be occurred as well as the thinkness of siltstone layer is thicker than 3cm. According to the result of the study, the residual amount of TCE in a sandstone is about 10.021g/m3, and the residual amount in a siltstone is about 10.611g/m3.