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年度	109	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	永續環境研究與教育中心
專案主持人	王雅玢	職等/職稱	教授
專案中文名稱	以薄膜蒸餾法進行重金屬污染地下水之整治
中文關鍵字	薄膜,重金屬,整治
專案英文名稱	Remediation of heavy metal contaminated groundwater by membrane distillation
英文關鍵字	membrane,heavy metal ,remediation
執行金額	1,250,000元
執行期間	2019/1/1 至 2020/11/30
計畫中文摘要	各類產業所產生之廢水常因製程所需而產生高鹽份或高電導度，且受限於水回收技術之限制，將無法順利進行廢水回收，因此該製程廢水除非能直接再利用，否則常須混入其他廢水一起處理或委外處理，因而增加生產成本。本研究利用空氣間隙薄膜蒸餾技術之高效阻擋特色，可應用於處理各類高電導度廢水之特性，探討應用此技術於受重金屬污染土壤地下水整治之可行性。 為此本團隊將開發一套氣體分隔式薄膜蒸餾系統(AGMD)，並且利用此系統對於模擬含鉻地下水進行測試，倘若此次實驗結果對於重金屬鉻具有極高之分離效果，將可進一步探討該技術是否適合應用於受重金屬污染地下水整治之可行性，提供土基會做為未來針對受重金屬污染地下水之另一技術選擇。本團隊自行配置不同濃度之鉻廢水當成進料，並探討進料端之溫度50℃、60℃及70℃及進流量2.0 L/min、3.1 L/min及4.2 L/min對分離效能的影響，此實驗結果未來將提供結合再生能源使用之依據，讓利用溫差驅動之薄膜蒸餾模組有望成為零排放技術之選擇。 本團隊目前已完成薄膜蒸餾模組之架設，針對人工配置的含鉻廢水，濃度10ppm及100ppm之標準品進行試驗，結果顯示AGMD確實可有效去除重金屬鉻，在試驗第一小時三組雙重複實驗均可達去除率99.5%以上。從實驗設計結果得知，鉻進流濃度對於去除率的影響最大，研究亦測試實廠5個含鉻廢水，發現在高濃度廢水下（>10000 ppm)，其鉻去除效率可達99%以上，但對於低濃度(<10 ppm)，其鉻去除效率僅達46%，因為實廠廢水取得不易，測試時間較短，尚需進行更多測試，取得更多數據以提供參考，但初步證實AGMD對於人工多元組合金屬廢水及高濃度的含鉻實廠廢水皆可達99%以上去除效率。
計畫英文摘要	Many industries have produced the wastewater with high salinity and conductivity from the production processes and cannot accomplish the water recycle due to the limitation of recovery technology. In this case, the wastewater could only be mixed with other wastewater for treatment or treated by other certified treatment companies. This will increase the business cost. This study applied the air-gap membrane distillation technology (AGMD) to treat the polluted groundwater with heavy metal and to discuss the feasibility of the treatment cost. Our group has developed an AGMD module to test the capacity of heavy metal treatment for the polluted groundwater. The 10 ppm, 50 ppm and 100 ppm of chromium standards were prepared to simulate the polluted groundwater and the effects of operatonal temperature of 50℃, 60℃ and 70℃ and inflow flow rate of 2.0 L/min, 3.1 L/min and 4.2 L/min will be evaluated. The results will provide valuable information to integrate the AGMD module with the renewable energy application. This integrated module is expected to be an alternative zero-discharge technology in the future. In this study, the preliminary test for the AGMD module was conducted. The results show that AGMD can effectively remove heavy metal chromium, and the removal rate of the three sets of double experiments can reach more than 99.5% in the first hour of the test. It is known from the experimental design results that the chromium influent concentration has the greatest influence on the removal rate. The study also tested 5 real chromium-containing wastewater and found that the chromium removal efficiency can reach more than 99% under high-concentration wastewater (>10000 ppm) , but for low concentrations (<10 ppm), the chromium removal efficiency is only 46%. However the real wastewater is not easy to obtain, and the test time is short, more tests and more data are needed to provide reference. The preliminary confirmation AGMD can achieve a removal efficiency of over 99% for both artificial multi-component metal wastewater and high-concentration chromium-containing real wastewater.