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年度	111	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	朝陽科技大學	申請系所	環境工程與管理系
專案主持人	張簡水紋	職等/職稱	教授
專案中文名稱	水刀注藥技術對運作中工廠含氯污染整治—模場試驗計畫
中文關鍵字	水刀注藥技術, 運作中工廠含氯污染生物整治
專案英文名稱	Pilot Study of Using Waterjet Injection Technology to Enhance Bioremediation of Chlorinated Solvents Contamination in Operating Factories
英文關鍵字	Waterjet Injection Technology, Enhanced Bioremediation of Chlorinated Solvents Contamination, Operating Factories
執行金額	1,340,000元
執行期間	2022/7/15 至 2024/6/15
計畫中文摘要	我國公告列管含氯有機溶劑土壤地下水污染場址解除列管比例偏低，顯示此類場址整治困難。國內含氯場址多可發現自然衰減作用，適用加強式現地厭氧還原脫氯生物整治法，惟現行的灌注井固定深度注入方式無法有效解決低透水性區域、或高/低透水性夾雜互層區域的含氯有機溶劑污染，實為技術瓶頸。 研究團隊針對灌注工法瓶頸問題引進水刀注藥技術，於素地污染場址進行2年模場試驗，取得良好成效。根據試驗成果，以水刀注藥工法灌注基質藥劑後，場址含氯污染區域能有效啟動並持續進行加強式現地厭氧還原脫氯生物降解；與現行注藥工法相比，可在低透水性或者高/低透水性夾雜互層的區域，讓基質藥劑有效的傳輸到污染物周邊、處理氯烯類污染。惟前期場址均為污染場址外素地，故本計畫進一步針對不同條件真實環境：運作中工廠含氯污染場址進行水刀注藥模場試驗，進行測試實證。 本計畫擇定彰化縣北斗鎮金順利工業股份有限公司為水刀注藥模場計畫試驗場址，目前經公告為土壤及地下水污染地下水整治場址。試驗區域地下水三氯乙烯濃度約為0.07 mg/L，超過第二類地下水污染管制標準。本計畫至期末查核點已依照預定進度完成：1) 地質鑽探作業；2) 地下水背景調查採樣分析；3) 水刀注藥現場試驗作業；及 4) 以及地下水監測評估。模場試驗成果顯示，水刀注藥作業後於試驗範圍建立反應牆，使試驗區域內監測井污染物濃度降低至低於管制標準，且持續低於管制標準，未出現濃度回升。
計畫英文摘要	Great attention has been given to the reductions in chlorine-containing organic solvents of the soil and groundwater contaminated sites at regulatory listing in Taiwan. Organic solvent contamination is difficult to clean up. Natural attenuation is observed at most of the chlorinated solvent contamination sites, which implies that enhanced in-situ reductive dechlorinated bioremediation (EIB) is feasible and practical. However, the current delivery technologies cannot effectively spread substrates nor put them into contact with contaminants. Subsurface waterjet technology is developed here to improve the biotreatment of residual bound contamination and eliminate contaminants rebound at low permeability zones. The team had already conducted a two-year pilot remediation project using waterjet injection technology to treat chlorinated organic solvent contamination at vacant lot in Taiwan. According to the results, the anaerobic bioremediation of chlorinated solvent contamination at the treated area had been successfully and continuously enhanced after the waterjet injection, which implied the technology had effectively delivered the substrate to the surrounding area of contaminants and improved the biotreatment of the residual bound contamination in the low permeability zones. For further understanding and evaluating the feasibility of the technology when applying to the operating factories with chlorinated organic solvent contamination, another two-year pilot remediation project is planned. The objectives of this study are to explore the application and effectiveness of waterjet injection technology and to develop a localized and practical way to enhance in-situ reductive dechlorinated bioremediation (i.e., the delivery of substrates). Hope to provide an alternative solution for remediation planning of the operating factories to reduce the time period of remediation where excavation is not practical and repeated back diffusion is a problem. The site selected for this year is King Shun-Li Industrial Co., located at Bei-Dou Township, Changhua County, which is currently declared a Soil and Groundwater Pollution Remediation Site. The groundwater TCE concentration was around 0.07 mg/L, which is above the Second Category Groundwater Pollution Control Standard. The following work items have already been conducted as scheduled: 1) geological survey data collection; 2) monitoring well groundwater background sample collection and analysis; 3) waterjet field work; and 4) groundwater monitoring. The groundwater monitoring results showed that the concentrations of contaminants had decreased to be below the applicable Control Standards. Meanwhile, back diffusion and concentration rebound was not observed after the implementation of waterjet injection.