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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	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	水刀注藥技術強化含氯有機溶劑場址-生物整治模場試驗計畫(第二年)
中文關鍵字	水刀注藥技術,含氯場址⽣物整治
專案英文名稱	Pilot Study of Using Waterjet Injection Technology to Enhance Bioremediation of Chlorinated Solvents Contamination (2nd)
英文關鍵字	Waterjet Injection Technology, Enhanced Bioremediation of Chlorinated Solvents Contamination
執行金額	2,290,000元
執行期間	2021/1/1 至 2021/11/30
計畫中文摘要	我國公告列管之含氯有機溶劑土壤/地下水污染場址解除列管比例偏低，顯示此類場址整治之困難。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、或是高/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。本研究冀以水刀注藥工法突破此技術瓶頸，由現地操作探討此技術之可行性、應用性與效益，發展本土化且實際可行之整治技術，提供污染場址於擬定改善計畫時更多樣性的工法選擇。 本計畫109年以臺南市安定區安定段2085地號（地下水污染管制區）、110年以臺南市新化區𦰡拔林1014地號（土壤及地下水污染地下水整治場址）為水刀注藥模場計畫試驗場址。試驗區域地質條件與地下水含氯污染物濃度符合計畫試驗場址挑選原則。 預定於期中及期末查核點執行之工作項目皆已完成。由2年期模場試驗結果顯示，水刀注藥工法施作後，受污染區域已經有效啟動進行氯烯類加強式現地厭氧還原脫氯生物降解作用。110年進一步以跨孔式地電阻影像法量測電阻率變化觀測藥劑傳輸，結果顯示水刀注藥能在短時間內有效地將基質藥劑在預定深度傳輸至目標範圍。水刀注藥工法與一般注藥工法相比，可在低透水性區域或高-低透水性夾雜互層的地層，讓基質藥劑有效傳輸到污染物周邊，故能有效的處理此類地層的氯烯類有機溶劑污染。後續建議再進一步以運作中工廠場址驗證工法可行性。
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. Organic solvent contamination is difficult to clean up. Natural attenuation is observed at most of the chlorinated solvent contamination sites in Taiwan, which implies that enhanced in situ reductive dechlorinated bioremediation (EIB) is feasible and practical here. However, the current delivery technologies that inject substrates that enhance microbial remediation via injection wells have fixed screen intervals and cannot effectively spread substrates nor put them into contact with contaminants in low permeability zones. Subsurface waterjet technology is developed here to improve the biotreatment of residual contaminants and eliminate contaminants rebound in low permeability zones. This study presents a pilot remediation project using waterjet injection technology to evaluate and verify the feasibility of the technology. The objectives of this study are to explore the application and effectiveness of waterjet injection technology to develop a localized and practical way to enhance in situ dechlorination bioremediation (via the delivery of substrates) that is expected to foster natural attenuation and remediation. The site selected for 1st year study is located at Tainan City, Anding District, Anding Section; Land Serial No.: 2085 (declared as a Groundwater Pollution Control Zone), and for 2nd year study is located at Tainan City, Xinhua District, Nabalin Section; Land Serial No.: 1014 (declared as a Soil and Groundwater Pollution Remediation Site). The investigation results of the hydrogeology and contaminant concentrations imply that both sites are suitable for the waterjet injection pilot test. The scheduled works have already been conducted in current project. After the waterjet field work has been conducted, the groundwater monitoring data showed that the waterjet injection technology had successfully enhanced the anaerobic bioremediation of chlorinated solvent contamination at the pilot area in a short period of time. Meanwhile, the CHERT results of 2nd year study had showed that the waterjet injection technology had delivered the substrate to the designed depth and desired radius of influence in a short period of time. In conclusion, the waterjet injection technology had both effectively delivered the substrate to the surrounding area of contaminants and improved the biotreatment of the residual contaminants in the low permeability zones. Further study regarding the feasibility of waterjet injection technology for the operating factory with chlorinated solvent contamination is suggested.