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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	國立中興大學	申請系所	環境工程學系
專案主持人	梁振儒	職等/職稱	特聘教授兼任教務長
專案中文名稱	含氯有機物污染場址現址P&T廢水與SVE廢氣活性碳吸附及再生自動化設備開發及應用
中文關鍵字	抽取處理法,土壤蒸氣萃取法,含氯污染物,活性碳,再生
專案英文名稱	Development and application of automatic activated carbon adsorption and regeneration equipment for treating P&T wastewater and SVE exhaust gas generated at the chlorinated organic contaminated site
英文關鍵字	Pump and Treat, Soil vapor extraction, Chlorinated organic contaminant, Activated carbon, Regeneration
執行金額	2,140,000元
執行期間	2022/5/1 至 2024/4/30
計畫中文摘要	根據土壤及地下水污染整治基金管理會統計，國內遭受碳氫化合物污染之場址數量高達70%，其中又以含氯脂肪族碳氫化合物(Chlorinated aliphatic hydrocarbons, CAHs)較為多數占32%，可見整治有機物污染之場址於國內之重要性。面對有機物污染之土壤及地下水，至今整治工程上使用抽取處理法(Pump and treat, P&T)及土壤蒸氣萃取法(Soil vapor extraction, SVE)仍為較常見之方式。P&T是一項針對飽和層地下水中溶解性污染物的整治方法，可藉由主動抽取地下水達移除污染物之目的。SVE係針對土壤通氣層中揮發性有機物進行整治之方法，利用真空抽氣產生負壓予以抽除污染物。兩種整治技術皆須於地表上建置廢液或廢氣處理設備，其中例如考量SVE抽取之氣相污染物濃度變化幅度甚大，使得許多污染氣體處理設備(例如熱氧化系統)無法於現址搭配單組SVE系統於有機物污染場址上使用，因此活性碳(Activated carbon, AC)成為目前較廣泛採用之SVE尾氣處理方式。AC吸附具有對有機污染物吸附效果佳及使用便利等優勢，因此對於環境污染物不論是污染氣體、廢水或地下水之緊急應變處理，AC吸附為常用之整治程序。 本研究計畫基於過去之研究基礎上，成功開發實驗室規模之「活性碳吸附」及「活化過硫酸鹽再生活性碳」系統結合之實驗裝置，並證實活化過硫酸鹽再生AC系統可有效應用於再生吸附飽和之AC，亦可有效氧化破壞有機污染物，且產生之廢水僅殘留過硫酸鈉降解產物硫酸根離子及鈉離子，即可逕行排放，因此可作為其他類型碳床再生技術之有效替代方案，並且用於處理來自整治場址SVE之有機污染物廢氣時，提供良好成本效益，例如無需處理廢棄之AC、節省人力更換新AC、機動性高配合整治作為之調整及機具移動等。 本計畫第一年研究已完成(1) 有機物污染場址現地廢水與廢氣AC吸附及再生自動化設備之設計、(2) AC吸附及再生自動化設備之各部位零件採購、組裝及自動化機電操控系統建置、(3) 實驗室場域測試探討AC吸附及再生自動化設備於氣相及液相不同操作條件下之運作及(4) 進行場址現地初步測試。
計畫英文摘要	According to statistics from the Soil and Groundwater Remediation Fund Management Board, up to 70 % of contaminated sites in Taiwan were affected by hydrocarbon pollution. Among them, chlorinated aliphatic hydrocarbons(CAHs)account for the majority at 32 %. This demonstrates the significance of addressing the remediation of organic pollution in Taiwan. When dealing with organic pollutants in soil and groundwater, two common methods used in remediation projects are Pump and Treat (P&T) and Soil Vapor Extraction(SVE). P&T is a treatment method for dissolved pollutants in the saturated aquifer, where active pumping is used to remove the contaminants. SVE, on the other hand, focuses on treating volatile organic compounds in the unsaturated zone, using vacuum extraction to remove the pollutants. Both remediation techniques require the installation of equipment for contaminated liquid or exhausted gas treatment at the site above ground. For example, due to the significant variation in the concentration of gas-phase pollutants extracted by SVE, many pollution gas treatment systems(such as thermal oxidation systems)cannot be used in conjunction with a single SVE system on organics contaminated sites. Therefore, Activated Carbon (AC) has become a widely used method for treating SVE exhausted gases. AC adsorption offers advantages such as effective adsorption of organic pollutants and convenience of use. Consequently, AC adsorption is commonly employed as a remediation procedure for urgent response to environmental pollutants, whether it is for treating polluted gases, wastewater, or groundwater. Based on previous research conducted by the principal investigator, the study aimed to develop a laboratory-scale experimental setup that combines "Activated Carbon Adsorption" with "Activated Persulfate Regeneration of AC." It has been successfully demonstrated that the activated persulfate regeneration system can effectively regenerate saturated AC, oxidize and degrade organic pollutants, and generate wastewater containing only residual sodium sulfate and sodium ions, which can be discharged directly. Therefore, it can serve as an effective alternative to other carbon bed regeneration technologies. Moreover, when used to treat organic pollutant exhausted gases from remediation sites using SVE, it provides good cost-effectiveness. This includes benefits such as not requiring disposal of spent AC, saving labor for AC replacement, high mobility for adjustment and equipment relocation in coordination with remediation activities, and more. In the first year of this project, the following objectives have been accomplished: 1. Design of on-site P&T wastewater and SVE exhausted gas AC adsorption and regeneration automated equipment for organic contaminated sites. 2. Procurement of components for AC adsorption and regeneration automated equipment; assembly, and establishment of the automated electromechanical control system. 3. Laboratory field testing to explore the operation of the AC adsorption and regeneration automated equipment under different operating conditions in both gas and liquid phases. 4. Preliminary testing conducted on-site at the remediation site.