現地導引處理系統配置對含氯有機溶劑整治效益的影響

在國內外於工業製程中而大量使用的有機溶劑，時常因未妥善處理或不慎洩漏而造成大部分的土壤及地下水被有機化合物污染。本研究為探討現地導引處理系統(Funnel and Gate System, FGS)不同的配置對於含氯有機溶劑(Chlorinated Organic Solvents, COS)整治效益的影響並建立FGS優化準則。本研究利用Visual MODFLOW數值模擬軟體及其污染傳輸模式RT3D建立地下水污染整治場址模擬含氯有機溶劑的傳輸、降解及FGS整治。由模擬結果優化進行配置改良直到找出最佳配置，最後探討FGS優化準則。由於氯乙烯(Vinyl chloride, VC)污染團影響範圍廣闊，故FGS參數設計及配置方案將根據氯乙烯結果做設計。初始配置方案以V型-127度為較佳配置。之後，再由三個方向優化進行多次改良而得到可以兼顧降低成本與提高整治效益的優化配置，包括：縮短導引牆長、改變導引牆建造方向、增加反應牆截面積及不同開口位置以增加移除率。

關鍵字

含氯有機溶劑；地下水污染整治；截水牆；反應牆；現地導引處理系統； FGS ； DNAPL ； Visual MODFLOW

並列摘要

Chlorinated organic solvents have been used widely by the industry for decades. However, they have also become the primary contaminants of groundwater due to inappropriate handling, storage, or disposal. This study investigated the effect of the configurationof funnel and gate system (FGS) on the efficiency of remediation. The remediation of FGS is simulated using groundwater flow and transport software Visual MODFLOW and RT3D. Cost and removal rate of the contaminants were the parameters considered to optimize the configuration of FGS. The configuration of the FGS is optimized by shortening the length of the funnel, changing the construction direction of the funnel, increasing the cross-sectional area of the gate and different gate positions for increase the removal rate. The results showed that the best configuration which means is configuration (6) which has V shape, shortest funnel, widest cross-sectional area of gate and three opening is the best configuration for the scenarios studied.

並列關鍵字

Chlorinated Organic Solvent ； Groundwater Pollution Remediation ； Permeable Reactive Barriers ； Cutoff Wall ； FGS ； DNAPL ； Visual MODFLOW

參考文獻

Gerber, M.A., Fayer, M.J. (1994). "In Situ Remediation Integrated Program: Evaluation and assessment of containment technology." United States: N. p. Doi:10.2172/10102478.

江東法等編著(2008)，含氯碳氫化合物土壤及地下水污染預防與整治技術手冊，經濟部工業局，台北市。