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年度	108	專案性質	實驗性質
專案類別	研究專案	研究主題	整治
申請機構	中原大學	申請系所	環境工程學系
專案主持人	游勝傑	職等/職稱	教授
專案中文名稱	以可見光催化模組進行SVE尾氣降解之長效現地測試
中文關鍵字	光催化，SVE，模組，現地測試
專案英文名稱	Long-term degradation test of SVE exhaust by visible-light photocatalytic module
英文關鍵字	Photocatalysis, SVE, module, on site
執行金額	850,000元
執行期間	2019/1/1 至 2019/12/31
計畫中文摘要	當土壤受到油氣污染時多以氣體抽除法進行整治，該法為防止土壤氣體污染氣體直接排放進入大氣環境，抽出之氣體經由管線至尾氣處理設備，經活性炭處理後排放，以確保排放符合氣體標準，該尾氣處理方式需要添加活性碳吸附劑。因此，本計畫擬發展利用可見光催化劑將SVE法尾氣進行催化降解，並將殘存的尾氣再透過活性碳進行吸附。由於使用“可見光催化催化+吸附膜組”，既較一般光催化劑節省能源，又減少傳統方法對大量活性炭的依賴，大大降低了尾氣處理之成本，降低空氣汙染風險。 於執行計畫過程中本團隊發現了前期吸附模組可能內部有短流現象的問題，並透過ANSYS有限元素分析軟體進行內部流場分析，結果顯示前期模組確實內部會產生短流現象，為減少吸附模組內部短流現象以利活性碳吸附，本團隊重新設計一套吸附模組，同時也透過ANSYS有限元素分析軟體對其內部流場進行分析，分析結果顯示，重新設計之模組因其內部增加了整流版，因此模組內部污染物可有效透過整流板擴散至吸附模組內部，使活性碳可有效與污染物進行接觸且吸附。 本團隊接著進行了實際污染場址之接洽，與桃園環保局、中油油品行銷事業部桃園營業處及新野科技股份有限公司進行協商後，現已可對商業化模組進行實際廠址實驗，經由測試後，發現可將40-50ppm之SVE尾氣降至0.8ppm以下，去除效率高達95%以上，因此，本團隊認為本商業化模組可取代現有SVE尾氣處理設備，降低土壤整治費用。
計畫英文摘要	Recently, soil vapor extraction (SVE) has been widely applied as in-situ remediation of groundwater contaminated by petroleum hydrocarbon. In order to prevent contaminated gas emissions, the pumped polluted gasses were adsorbed by activated carbon at tail gas treatment unit before their release in the atmosphere, which prevents the pollutant gases being discharged directly into the atmosphere. Activated carbon requires expensive costs, problem of adsorption over-saturation and high energy consumption so that it is not suitable for SVE method In our study, utilization of visible-light-driven catalyst developed to degrade SVE process toluene, then the remaining exhaust gas is adsorbed by activated carbon. Compared to the general photocatalyst, it not only saves energy but also reduces the amount of activated carbon in the traditional method due to the use of the "photocatalysis module + adsorption module." It significantly reduces the cost of treating exhaust gas and the risk of air pollution. In the first half of 2019 years, we found that the pre-adsorption module may have a short-flow phenomenon inside and through the ANSYS software for internal flow field analysis. The results depicted that there are short-flow phenomena inside the early modules. To facilitate the adsorption of activated carbon to reduce the short-flow phenomenon inside the adsorption module. We have redesigned an adsorption module and analyzed its internal flow field via ANSYS finite element analysis software. The results indicated that a rectified version has been added to the redesigned module, so that the module's internal pollutants can be effectively diffused through the rectifying plate into the adsorption module. We also conducted the actual pollution site in the first half of 2019. The commercial module can now be implemented after discussion with Taoyuan EPB, CPC Corporation and Xinye Technology Co., Ltd. We are expected to insert the completed commercial module into the actual site in the second half of the year and find that the removal performance could be achieved to 95%, which the treated gas could be lower than 0.8 ppm. By means of a real data test to evaluate the efficiency and cost of the commercial module, the commercial module is expected can replace existing SVE exhaust gas treatment equipment and reduce soil remediation costs.