第五章 結論與建議
5.2 建議
本研究中整治井只設置於長軸方向上，並未研究任何非長軸上佈井的整治效 率。由洩降錐觀念可知整治井在平面上任一點造成的壓差僅與距離有關，可預期 無論是否在長軸上佈井，只要與洩漏點距離相等，則整治井與洩漏點間壓力梯度 將相同。但因為油品在長軸、短軸上分布狀態並不相同，相同壓力梯度下仍無法 保證得到相同整治效率。此外本研究中場址僅設置一口整治井，對於聯井未做任 何探討，而實際現場作業將會重疊多座整治井之影響半徑來涵蓋整個自由相油品 範圍。為了和現地做結合，探討聯井行為與非長軸上佈井對於整治效率、速率之 影響在未來是需要的。
在 TMVOC 運作過程，為了維持數值收斂時常自動將 time step 調整至很小 的數值，使得模擬時間被拉得極長，本研究中部分模型甚至需要兩個禮拜。另外，
TMVOC 的 time step 上限被設定在 9999，每當上限達到，程式便會自行停止，
須手動讓模型繼續向下運行，長時間模擬更顯得無效率。除了模擬時間過長，
TMVOC 迭代過程亦時常出現不收斂問題。為了模擬複雜模型，迭代穩定度與 solver、網格切割、化學參數、係數平均方式、邊界條件、整治井參數等等的相 互關係，在未來有深入探討的必要。
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其他參考出處
環保署土壤及地下水污染整治網：http://sgw.epa.gov.tw/public/index.asp 經濟部水利署：http://www.wra.gov.tw/
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Chemical Critical
Tmeperature 562.2 591.8 617.2 617.1 568.7
Chemical Critical Pressure 48.2 41.0 36.0 35.4 24.9
Cemical Critical
Compressity 0.271 0.263 0.262 0.259 0.259
Pitzer's Acentric Factor 0.212 0.263 0.302 0.325 0.399
Chemical Dipole Moment 0.0 0.4 0.4 0.3 0.0
CHEMP2
Chemical Normal Boiling
Point 353.2 383.8 409.3 412.3 398.82
Chemical Vapor Pressure
Constant A -6.98273E0 -7.28607E0 -7.48645E0 -7.59222E0 -8.495E0 Chemical Vapor Pressure
Constant B 1.33213 1.38091 1.45488 1.39441 2.03865 Chemical Vapor Pressure
Constant C -2.62863E0 -2.83433E0 -3.37538E0 -3.22746E0 -3.32E0 Chemical Vapor Pressure
Constant D -3.33399E0 -2.79168E0 -2.23048E -2.40376E0 -3.648E0
CHEMP3
Chemical Molecular
Weight 78.114 92.141 106.168 106.168 86.58
Chemical Ideal Gas Heat
Capacity Constant A -3.392E1 -2.435E1 -4.31E1 -2.917E1 187.78 Chemical Ideal Gas Heat
Capacity Constant B 0.4739 0.5125 0.7072 0.6297 0.001 Chemical Ideal Gas Heat
Capacity Constant C -3.017E-4 -2.765E-4 -4.811E-4 -3.747E-4 1.0E-6 Chemical Ideal Gas Heat
Capacity Constant D 7.13E-8 4.911E-8 1.301E-7 8.478E-8 1.0E-8
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Reference Density for
NAPL 885.0 867.0 867.0 864.0 759.2
Reference Temperature for
NAPL 289.0 293.0 293.0 293.0 298.15
Reference Binary
Diffusivity of VOC in Air 7.7E-6 8.8E-6 7.7E-6 7.04E-6 6.16E-6 Reference Temperature for
Gas Diffusivity 273.1 303.1 298.1 293.0 298.15
Chemical Diffusivity
Exponent 1.52 1.41 1.79 1.93 1.52
CHEMP5
Liquid NAPL Viscosity
Constant A 4.612 -5.878E0 -6.106E0 -3.82E0 0.0
Liquid NAPL Viscosity
Constant B 148.9 1287.0 1353.0 1027.0 0.0
Liquid NAPL Viscosity
Constant C -2.544E-2 0.004575 0.005112 -6.38E-4 0.194 Liquid NAPL Viscosity
Constant D 2.222E-5 -4.499E-6 -4.522E-6 4.52E-7 298.15 Chemical Critical Volume 259.0 316.0 374.0 376.0 492.0
CHEMP6
H2O Chemical Solubility
Constant A 4.11E-4 1.01E-4 2.58E-5 2.97E-5 9.76E-6 H2O Chemical Solubility
Constant B 0.0 0.0 0.0 0.0 0.0
H2O Chemical Solubility
Constant C 0.0 0.0 0.0 0.0 0.0
H2O Chemical Solubility
Constant D 0.0 0.0 0.0 0.0 0.0
CHEMP7
Chemical Organic Carbon
Partition Coefficient 0.0891 0.273 0.681 0.55 0.264 Default Fraction of Organic
Carbon in Soil 0.001 0.001 0.001 0.001 0.001
VOC Biodegradation
Decay Constant 0.0 0.0 0.0 0.0 0.0