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年度	108	專案性質	實驗性質
專案類別	模場試驗	研究主題	整治
申請機構	國立屏東科技大學	申請系所	環境工程與科學系
專案主持人	陳冠中	職等/職稱	教授
專案中文名稱	以光纖光催化技術處理地下水中三氯乙烯之現地模場研究
中文關鍵字	光催化透水性反應牆、覆膜光纖、三氯乙烯、現地整治
專案英文名稱	The Use of Photocatalytic Optical Fiber Technology to Treat Groundwater Contaminated by Trichloroethylene: A Remediation Pilot Study.
英文關鍵字	photocatalytic permeable reactive wall, coated optical fiber, trichloroethylene, in-situ remediation
執行金額	1,450,200元
執行期間	2019/1/1 至 2020/11/30
計畫中文摘要	本試驗在歷年研究成果顯示，光觸媒覆膜光纖PRB對於模擬受TCE污染之地下水有良好的處理效果，具應用於現地處理之可行性。因此，本年度將過去成果作為基礎，將光纖光催化處理系統應用於現地模場，進行其處理效率之評估。在先導試驗方面，本團隊針對場址位於所在地之屏東，進行地理及地形、氣候、地質與土壤、地表水系，以及模場所在地之新開寮水文地質進行調查，並針對公告污染場址之既有監測井進行資料蒐集，且在進一步測量本計畫所設之監測/處理井附近之地下水水位，以及鄰近模場之監測井近三年地下水污染情況。 本團隊於今年度設計一套適合應用於地下水層較厚之水中光源機，可將光源有效延伸至地下水污染層，降低光損失。在現地試驗方面，本研究以模場之流速流向進行試驗調查，並針對處理井進行MIP分析，優先找到污染層及熱點。試驗以被動式採樣袋進行井中污染物濃度空白分析，得到背景資料確認後，再以光纖光催化系統應用至現地試驗，進行不同光觸媒種類對於現地受污染之地下水含氯有機物之探討，試驗最後進行總有機碳與氯離子濃度之影響調查。在試驗A方面，1,1,2-三氯乙烷、四氯乙烯，以及三氯乙烯皆可達到100%去除率，而1,1-二氯乙烯可達到98%去除效率，在試驗B方面，四種污染物皆達到100%去除效率。在總有機碳去除效率方面，試驗模場之受污染地下水之總有機碳濃度，確實隨著系統進行而達到去除，TiO2與N-TiO2分別達到47.13與42.92%去除效率。另一方面，氯離子在光纖光催化系統處理過後，確實有生成分別為0.89與0.99 mg/L，這代表此系統於地下水污染層確實進行光催化降解作用。
計畫英文摘要	The previous research results of this experiment over the years show that the photocatalyst-coated fiber optic PRB has a good treatment effect on simulating groundwater contaminated by TCE, and has the feasibility of being applied to the local treatment. Therefore, this year, based on the past results, the fiber photocatalytic treatment system was applied to the local model field to evaluate its processing efficiency. In terms of pilot testing, the team conducted a survey on the geography and topography, climate, geology and soil, surface water system, and the newly opened hydrogeology at the location of the model site for the site in the site of Pingtung, and for the announcement of the contaminated site. There are monitoring wells for data collection, and further measurement of groundwater level near the monitoring/treatment wells set up in the project, and groundwater pollution in the monitoring wells adjacent to the model field for nearly three years. This year, we designed a light source machine suitable for use in thick groundwater layers, which can effectively extend the light source to the groundwater pollution layer and reduce light loss. In terms of field test, this study conducts a test survey based on the flow velocity of the mold field, and performs MIP analysis on the treatment well to give priority to the pollution layer and hot spots. The test uses a passive sampling bag to carry out blank analysis of the concentration of pollutants in the well. After obtaining the background data, the fiber photocatalytic system is applied to the local test to discuss the different types of photocatalysts for the contaminated groundwater chlorine-containing organic matter. Investigation on the influence of total organic carbon and chloride ion concentration at the end of the test, in test A, 1,1,2-trichloroethane, tetrachloroethylene, and trichloroethylene can all reach 100% removal rate, while 1,1-dichloroethylene can reach 98% removal efficiency. In test B, All four pollutants reach 100% removal efficiency. In terms of total organic carbon (TOC) removal efficiency, the TOC concentration of the contaminated groundwater in the test field did reach the removal with the progress of the system, and the removal efficiency of TiO2 and N-TiO2 reached 47.13 and 42.92%, respectively. On the other hand, after the treatment of the optical fiber photocatalytic system, chloride ions did produce 0.89 and 0.99 mg / L, respectively, which means that the system did photocatalytic degradation in the groundwater pollution layer.