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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	章日行	職等/職稱	教授
專案中文名稱	共溶劑及電動力技術實場整治含氯有機物污染之土壤與地下水
中文關鍵字	共溶劑, 電動力, 實場整治, 含氯有機物, 單井流速流向儀
專案英文名稱	A study of real-field remediation for chlorinated organic contaminated soils and groundwater by the co-solvent and electrokinetics technique
英文關鍵字	Co-solvent, Electrokinetics, Real-field remediation, Chlorinated organic, Heat-pulse flowmeter
執行金額	2,900,000元
執行期間	2022/3/1 至 2023/3/1
計畫中文摘要	本計畫第一年已成功採用單井流速流向量測技術取得場址中詳細的地下水流場，有利掌握可能殘留的含氯溶劑污染源位置；同時，共溶劑(乙醇)添加至地下水中，提升地下水對於含氯有機物的溶解能力，共溶劑乙醇亦可產生生物反應降解含氯有機物；最後，電滲透流促進此溶解相污染物於土壤層及地下水層之移動，藉由地下水抽除即可有效移除土壤及地下水之含氯有機物。此外，低濃度的含氯有機物可透過共溶劑及電動力法產生之生物反應降解含氯有機物，最終使污染場址的地下水質符合國家管制標準；抽除的地下水再經設置之廢水處理設施處理後迴流，已建立一套完整的土壤及地下水整治技術。經第一年污染場址熱區整治後，四氯乙烯濃度已從0.254 mg/L~2.15 mg/L 降至0.006 mg/L 以下，三氯乙烯濃度從0.032 mg/L~0.175 mg/L 降為 N.D，二氯乙烯及氯乙烯濃度皆已低於監測標準，且於停止操作後其污染物濃度未有回升的現象，顯示本整治技術對於含氯污染物整治的有效性。 本年度第二年研究計畫持續以快速、精準、多功能且高經濟效益的處理技術整治全場含氯污染物地下水，相信研究成果可作為未來國內土壤及地下水處理技術的重要參考。透過本年度第二年污染場址的重新鑿井，並持續監控第一年整治後之整治井的污染濃度，擴大整治範圍以釐清此整合技術處理全場含氯有機物污染土壤及地下水的處理效率及相關操作參數問題。最後，探討在此整合技術下全場的整治效果及評估本整合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，目前已完成土壤及地下水物化特性分析、整治井及監測井設置、乙醇共溶劑及電動力法設備架設、單井流速流向量測、土壤質地調查、廢水處理設施處理成效及含氯污染物整治操作。截至目前，期末報告試驗結果可以歸納如下：  本計畫透過單井流速流向量測、共溶劑、電動力法及廢水處理設施已建立一套完整現地含氯有機物於土壤及地下水之整治系統。  本場址地下水水質及含氯污染物濃度皆已掌握，且土壤質地調查亦已完成，可作為含氯污染物整治之探討依據。  本年度污染場址整治井A5~A8及B5~B8含氯污染物於6個月整治下，濃度皆已低於管制標準，顯示本計畫整治工法可有效處理地下水含氯污染物。  上一年度整治井A1~A4及B1~B4已整治完成，但因本年度新整治井鑿井過程導致A1及A2濃度升高，但經過一段時間後即降至法規以下，且後續未有濃度回升的情形發生。  本計畫污染場址之監測井MW01~MW09 污染濃度大部分已符合法規，僅少部分監測井仍高於管制標準。  根據整治成效得知，本計畫已將整場污染場址含氯污染物濃度降至約90%，未來僅有少數區域需要持續整治即可達到完全處理。  經廢水處理設置處理後，地下水四氯乙烯濃度從2.82 mg/L降至ND；三氯乙烯濃度從1.83 mg/L降至ND；順-1,2-二氯乙烯濃度從1.66 mg/L降至ND。顯示本廢水處理設施能有效將抽除的地下水進行降解，使迴流水符合法規標準，達到地下水循環的目標。  經由微生物菌相檢測得知，本場址於整治工法操作下，地下水體中仍含有許多微生物物種存在，顯示本整治工法(共溶劑結合電動力法)是具綠色及環境友善之整治技術。
計畫英文摘要	The first year program has been successfully adopted a single-well velocity flow vector measurement technique to obtain a detailed groundwater flow field in the site, which is beneficial to grasp the location of possible residual chlorinated solvent pollution sources; co-solvent (ethanol) is added to groundwater to improve groundwater’s dissolved capacity to chlorinated organic matter The co-solvent ethanol can also produce a biological reaction to degrade chlorinated organic matter; finally, the electro-osmotic flow promotes the movement of the dissolved phase pollutants in the soil and groundwater layer, and the groundwater pumping can effectively remove the soil and groundwater with chlorine organics. In addition, low-concentration chlorinated organics can degrade chlorinated organics through biological reactions generated by co-solvents and electrodynamic methods. Final, to make the groundwater quality of contaminated sites meet national control standards. The pumped groundwater is treated by the wastewater treatment facility and then returned to anodes. After the remediation of the model test and hot spot of the contaminated site, the concentration of PCE from 0.254 mg/L~ 2.15 mg/L has dropped below 0.006 mg/L, while TCE has decreased from 0.032 mg/L~0.175 mg/L has reduced to ND, the concentration of dichloroethylene and vinyl chloride is lower than the monitoring standard. The pollutant concentration has not rebound after the operation is stopped, which shows the effectiveness of this remediation technology for the remediation of chlorine-containing pollutants. It can be returned to the injection well (anode end) to achieve the goal of groundwater circulation, which proves the feasibility of the design of this remediation method. The second year's research plan will continue to use fast, accurate, multi-functional, and highly economical treatment technology to remediate the groundwater containing chlorine pollutants in the whole site. It is believed that the research results can be used as domestic soil in the future. and an important reference for groundwater treatment technology. Through the re-drilling of the polluted site in the second year, and the continuous monitoring of the remediation wells after the first year of remediation, the scope of remediation was expanded to clarify the treatment efficiency of this integrated technology in treating the soil and groundwater contaminated by chlorinated organic compounds in the full site. The operating parameters, such as the scope of remediation, the efficacy of ethanol injection, the impact of various electrochemical reactions generated by electrokinetics on groundwater, the treatment efficiency of the electrocatalytic technique, and the control of operation time have been studied. Finally, to discuss under this integrated technology the remediation efficiency of the full field and the remediation cost required to evaluate the integration technology. In view of the foregoing arguments, the research objectives of this project include: This experiment of this project is carried out in accordance with the schedule of the plan. At present, the analysis of the physical and chemical characteristics of soil and groundwater, the setting of remediation wells and monitoring wells, the installation of ethanol co-solvent and electrokinetics technique equipment, flow rate and flow direction of a single well have been completed, soil texture survey, treatment effectiveness of wastewater treatment facilities, and chlorine-containing pollutant remediation operations. Until now, the results of the report can be summarized as follows:  This plan has established a complete in-situ remediation system of chlorinated organics in soil and groundwater through single well flow velocity measurement, co-solvent, electrokinetics method and wastewater treatment facilities.  The groundwater quality and concentration of chlorine-containing pollutants at this contaminated site have been mastered, and the survey of soil texture has also been completed, which can be used as a basis for discussion on the remediation of chlorine-containing pollutants.  The concentration of chlorine-containing pollutants in wells A5~A8 and B5-B8 of the contaminated site remediation has been lower than the control standard after 6 months of remediation, which shows that the remediation method of this plan can effectively treat chlorine-containing pollutants in groundwater.  Remediation wells A1~A4 and B1~B4 have been remediated in the last year, but the concentration of A1 and A2 increased due to the sinking process of the new remediation well this year, but fell below the regulations after a period of time, and there was no subsequent concentration rebound situation occurs.  Most of the pollution concentrations of monitoring wells MW01~MW09 in the polluted sites have complied with the regulations, and only a small number of monitoring wells are still higher than the control standards.