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年度	105	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	崑山科技大學	申請系所	環境工程系
專案主持人	吳庭年	職等/職稱	教授
專案中文名稱	現地電解整治受氯乙烯污染地下水之模場試驗
中文關鍵字	氯乙烯、現地電解、太陽能、綠色整治、永續整治
專案英文名稱	Pilot Study on In-situ Electrolytic Remediation of Vinyl Chloride Contaminated Groundwater
英文關鍵字	vinyl chloride, in-situ electrolysis, solar energy, green remediation, sustainable remediation
執行金額	1,927,000元
執行期間	2015/11/17 至 2016/11/16
計畫中文摘要	本研究提出現地電解整治工法的概念，整合太陽能供電系統與電解處理系統，開發綠色整治工法應用於地下水氯乙烯污染場址之整治。研析太陽能應用於環境污染整治之潛力，實驗裝置以太陽能為電力來源，太陽能板發電，儲存於電池，以直流電輸出，電化學反應器以電壓控制，觸發電化學反應產生氫氧自由基，可快速氧化降解整治井中氯乙烯污染物，達到地下水污染整治之成效。本研究規劃模場試驗確立現地電解整治系統的操作條件，展示現地電解整治工法應用於地下水氯乙烯污染場址之可行性。本專案模場試驗場址位於高雄市小港區伍桐股份有限公司地下水污染控制場址，利用現地電解整治工法降低地下水中氯乙烯濃度，本案例落實綠色及永續整治概念，操作以太陽能為動力之電解系統，可降低污染整治的長期操作費用，並兼具節能減碳的成效，未來可進一步開發太陽能應用於環境污染整治的工具。 現階段執行進度已完成實驗室電解實驗，比對氯乙烯經由曝氣作用與電解機制移除的效果，確認未添加電解質直接電解地下水的可行性，建立現地電解系統電壓操作條件。現地模場試驗已完成單井流速流向測定、鑽設1 口簡易井(整治井)、鑽設1 口標準井(背景監測井)、現地電解整治設備製作與系統安裝等工作，現地電解整治系統正常操作約1 個月，整治井氯乙烯濃度迅速降至地下水管制標準以下(ND 值)，成效監測井氯乙烯濃度略有上下浮動，目前亦降至地下水管制標準以下(ND 值)。現階段整治成效明顯，後續持續操作現地電解整治系統，依成效評估結果適時調整操作方式。
計畫英文摘要	This study proposed the concept of in-situ electrolysis remedy scheme to integrate solar energy power supply system with electrolytic treatment system. The proposed remedy scheme, one of green remediation methods, was applied to the cleanup of groundwater contaminated with vinyl chloride. For applying solar energy on environmental cleanup, experimental apparatus is designed using solar energy as power source. Solar energy was collected from the solar plate unit, stored in a battery, and transferred as a DC current. The electrochemical reactor received the electrical current, initiated serial electrochemical reactions, generated the OH radicals, degraded chlorinated pollutants, and remediated contaminated groundwater. The objective of the pilot study is focused on confirming the operation control of the in-situ electrolysis (ISE) remediation system and illustrating the feasibility of ISE application on a vinyl chloride-contaminated groundwater case. The selected study site is a groundwater contaminated site with vinyl chloride located at Kaohsiung, Taiwan. This study tried to remediate residual vinyl chloride with in-situ electrolysis remedy scheme, and the concept of green and sustainable remediation was implemented by the designed solar-driven energy system. The benefits of employing the proposed remedy scheme include energy saving, green-house gas (GHG) reduction, treatment cost cutback, and thus the application of the solar-driven electrolysis system can be prevailed in the near future. Lab electrolysis experiments were completed at present. The effects of vinyl chloride (VC) removal through bubble stripping and/or electrolysis were compared under the control of operating potentials. The feasibility of electrolyzing field VC-contaminated groundwater samples without the addition of electrolytes were examines in lab experiments. Based on the results of lab electrolysis experiments, the optimal operating control was applied to the operation of the in-situ electrolysis remediation system. Pilot-scale experiments including the measurement of flow direction and flow velocity in one monitoring well, the establishments of a remediation well and an efficiency monitoring well, the manufacture of the in-situ electrolysis remediation system and the setup. Pilot-scale experiment has been conducted for about one month, the VC concentrations droped rapidly to the undetected level in the remediation well and also reduced up and down to the undetected level in the efficiency monitoring well. The remediation efficiency is remarkable at present, and the future work is to keep operating the in-situ electrolysis remediation system and to adjust the operating control according to the outcome of remediation efficiency evaluation.