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年度	110	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	以光催化技術處理地下水中含氯有機污染物-光纖模組及綠能系統開發
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	Treatment of chlorinated organic pollutants in groundwater with photocatalytic technology-development of optical fiber module and green energy system
英文關鍵字	photocatalytic permeable reactive wall, coated optical fiber, trichloroethylene, in-situ remediation
執行金額	1,950,000元
執行期間	2021/1/1 至 2022/12/31
計畫中文摘要	本系統對受污染地下水之處理構想，係由透水性反應牆概念所設置之光纖光催化系統，經由內部光源照射至光纖表面之光觸媒後產生氫氧自由基(·OH)與地下水中之污染物反應，達到去除污染物和整治污染場址之效果。本研究專案在多年的基礎成果下，已經開發至現地試驗之光纖光催化系統，驗證系統對於地下水污染具有改善成效。本期專案(110-111年度)係延續前期模場專案，將處理範圍擴大至新場址以多口系統井進行試驗與驗證，透過觀測井探討其污染處理成效。本計畫已完成現地模場整理與水位調查，結果顯示近期地下水水位高度在5-6月變化較為劇烈，由地表下40 m上升至10 m水位，並且已完成歷年水質與現有場址之調查。透過歷年資料得知，場址主要污染以1,1二氯乙烯為主，近五年污染濃度最高在107年枯水期為0.16 mg/L。本專案於110年度已完成現場整理作業，包括整地作業、除草作業、井體維護，以及相關電力配置。在處理系統方面，完成模組化系統設計與製作，且已完成封篩管設計與改良，以及可見光與紫外光之光源系統設計並完成製作。 光纖光催化試驗系統方面，由試驗B至F結果，證明光纖光催化系統之處理段可有效處理地下水之污染物，並由單井或下游之驗證得知。另一方面，在光纖光催化系統處理過後，確實有生成氯離子，這代表此系統於地下水污染層確實進行光催化降解作用。而DOC方面，可能受到土壤中有機物質不穩定的釋出，導致濃度準確性較差，但整體DOC之分析仍顯示出系統對於DOC具有去除效率，也代表地下水中之有機污染物受到去除。另外，本團隊已完成綠能系統測試與電力供應試算，有利於後續111年度計畫執行。
計畫英文摘要	The proposed photocatalytic optical fiber system for polluted groundwater treatment was based on the concept of permeable reactive wall. By illuminating the photocatalysts coated on the optical fiber, the system can produce hydroxyl radicals to react with pollutants, decrease their concentration, and remediate the polluted field. We have developed an in-situ photocatalytic optical fiber system and have verified that the system can effectively treat groundwater pollution. This two-year project (2021-2023) continues our previous field study and expands the treatment from one single well to multiple wells. This time we use observation wells to evaluate the performance of our system on pollutants removal from contaminated groundwater. We have completed the land leveling and groundwater level measurement at this stage. The groundwater level raised dramatically from -40 m to -10 m in June 2021. We also reviewed the groundwater quality from past years. According to the historical data, the primary pollutant in the groundwater in the study area is 1,1 dichloroethylene. In the past five years, its highest level was 0.16 mg/L in the dry season in 2018. We have mowed the grass, maintained the well body, and installed the electrical system in the study site. We have designed and made the new module regarding the photocatalytic optical fiber system. The sealing tube and the light source, including visible and ultraviolet, have been redesigned, improved, and made. Regarding the efficiency of the new photocatalytic optical fiber system, the results of test B to F test show that the system effectively decreased the chlorinated organic pollutants. This was proved by examining the concentration of contaminants in test wells and downstream wells. Another proof was the increase of chloride concentration after groundwater treatment by the tested system. The release of organic matter from the soli might influence the DOC concentration in the groundwater. However, the analysis showed that the system could decrease the DOC level in the treated groundwater, implying the removal of organic pollutants. In the end, we have preliminarily tested the solar energy system and calculated its power supply, which is beneficial to our further study plan in the second year.