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年度	107	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	朝陽科技大學	申請系所	環境工程與管理系所
專案主持人	章日行	職等/職稱	教授
專案中文名稱	整合零價金屬與電動力法整治四氯乙烯污染土壤及地下水
中文關鍵字	零價金屬、電動力法、四氯乙烯、土壤、地下水
專案英文名稱	Integration of zero-valent metal and electrokinetics to remediate perchloroethylene contaminated soil and groundwater
英文關鍵字	zero-valent metal, electrokinetics, perchloroethylene, soil, groundwater
執行金額	770,000元
執行期間	2018/1/10 至 2018/11/30
計畫中文摘要	本計畫整合電動力法及零價金屬技術整治四氯乙烯污染土壤及地下水，藉由電動力法使土壤層中滲透水流動，有效驅動土壤中的有機污染物，將污染物流經一零價金屬處理區時，藉由還原作用分解有機污染物，可同時針對不飽和層及飽和層的有機污染物進行處理，有效整治土壤及地下水。本年度研究計畫擬放大試驗模場，模擬未來實際應用於現地整治的處理情形，建立快速、有效且達到高經濟效益的含氯有機化合物處理技術，相信可作為未來土壤及地下水處理技術的重要參考。透過一系列試驗後，可有效釐清試驗模場放大規模後，電動力法與零價金屬處理四氯乙烯污染土壤及地下水的處理效率及操作參數問題，最後探討在此技術下的整治效果及本技術所需的整治費用。 本計畫實驗按照計畫書執行內容進行，計畫符合預定期程，已完成污染土壤的基本物化特性分析、小型及大型模場試驗裝置、孔隙水及土壤中四氯乙烯的去除效率及大型模場模擬大範圍現地整治成效，試驗結果可以歸納如下：  本試驗經由電動力結合零價鐵金屬處理系統分解四氯乙烯，系統之pH值能維持穩定狀態，而導電度有下降趨勢。  土壤孔隙水中之PCE濃度於處理24小時後濃度顯著下降，可達到97%的去除效率，且可符合法規標準。  土壤中之PCE濃度於處理120小時下，電壓梯度4 V cm-1能達到約92%的去除效率，有效降低土壤中的PCE濃度。  透過大型模場模擬現地PCE污染土壤之整治已完成，孔隙水之PCE去除效率為82%，土壤中PCE濃度之去除效率可達80%。  本研究電動力結合零價鐵金屬整治PCE污染土壤，操作120小時所需消耗之電力成本費用為9元。  本研究經實驗結果證明，電動力系統結合零價鐵金屬技術是一項有潛力的現地PCE污染整治技術。
計畫英文摘要	In this study, Integration of zero-valent metal and electrokinetics to remediate perchloroethylene contaminated soil and groundwater. By the electroosmosis effectively drive water flows and organic pollutants in the soil. The decomposed of pollutants by reduction reaction while pollutants through zero metal treated area. The organic pollutants could be treated simultaneously in the unsaturated layer and the saturated layer, it effectively remediate the soil and groundwater. In this study, our model was enlarged to simulate the situation of actual treatment in the future and to establish a chlorine-containing organic compound treatment technique. The integration technique could reach fast, effective and achievable with high economic benefits. After a series of tests, the efficiency and operation parameter of electrokinetics and zero-valent metal treatment of perchloroethylene contaminated soil and groundwater could be clarify. Finally, the treatment efficiency and costs of this technique was evaluated. The execution of experimental program according to the previous plans, the analysis of physical-chemical characterization of contaminated soil, the small and large-scale mode experimental equipment, removal efficiency of perchloroethylene and the large-scale model for subsequent in-situ regulation have been obtained. Several conclusions and suggestions can be drawn:  In this test, perchloroethylene was decomposed via electrokinetics combined with zero-valent iron metal processing system. The pH of the system could maintain a stable state and the conductivity had a decreasing trend.  After 24 hours of treatment, the PCE concentration in pore liquid decreases significantly and to meet regulatory standards. The removal efficiency of PCE could be achieved to 97%.  The removal efficiency of PCE contaminated soil about 92% under 4 V cm-1 of voltage gradient at 120 hrs of treatment, can effectively reducing the PCE concentration in the soil.  The remediation of in-situ PCE contaminated soil by large-scale model has been completed. The treatment efficiency of PCE in pore water and soil is 82% and 80%, respectively.  In this study, the cost of electricity about 9 NTD by combined with electrokinetics and zero-valent iron metal for remediating PCE contaminated soil at 120 hrs treatment time.  The experimental results can proved that the electrokinetics combined with zero-valent iron metal is a potential in-situ PCE pollution remediation technique.