教師資料查詢 | 類別: 會議論文 | 教師: 黃國楨 Hwang, Kuo-Jen (瀏覽個人網頁)

標題:逆洗對沈浸式薄膜過濾性能之影響
學年96
學期1
發表日期2007/09/12
作品名稱逆洗對沈浸式薄膜過濾性能之影響
作品名稱(其他語言)Effect of Backwash on the Performance of Submerged Membrane Filtration
著者黃國楨; 詹智勝
作品所屬單位淡江大學化學工程與材料工程學系
出版者
會議名稱2007年輸送現象及其應用研討會
會議地點臺北市, 臺灣
摘要本研究旨在探討逆洗的操作條件對沈浸式薄膜過濾效能的影響。以平均孔徑為5.6μm之薄膜過濾粒徑為5μm之聚甲基丙烯酸甲酯(PMMA)粒子為例,探討逆洗時間、逆洗頻率及逆洗通量等操作條件對濾速恢復與逆洗效率的影響。研究結果顯示:在過濾初期,過濾阻力之主要來源是薄膜的阻塞,等到過濾500秒後,則轉變成濾餅過濾模式,但薄膜孔洞阻塞之阻力仍佔總阻力之50%以上。操作在低逆洗通量時,長時間的逆洗比短時間的逆洗更能去除內部阻塞約達23%。比較第一次逆洗的濾速回升率,則在低逆洗通量下,可將濾速提升約39%,高逆洗通量則可將濾速提升約56%。而高逆洗通量對於附著在薄膜孔道內的粒子具有良好的沖刷效果,並可以有效的去除薄膜表面上的濾餅,故更能讓濾速提升;因此在長時間且高通量的逆洗條件之下,效率值平均可達40%,可以比低通量的逆洗高出2倍的效率值。;The effects of backwash conditions, such as filtration time, backwash duration, backwash flux, on the filtration rate recovery and membrane blocking in submerged membrane filtration are studied. The experimental results show that the filtration resistances due to cake formation and membrane blocking play the major roles on the overall filtration resistance, but the latter one is always dominant. The filtration rate can be increased by increasing backwash flux and backwash duration because of the reduction of membrane internal fouling. In the first backwash cycle, the filtration rate can be recovered reaching about 39% and 56% of the original under the low and high backwash fluxes, respectively. It can be concluded that to operate under the conditions of long backwash duration and high backwash flux is optimum. In such conditions, the overall filtration efficiency can be increased as high as 40%. A higher backwash flux may make a 2-fold efficiency than a lower one would be under the same backwash duration.
關鍵字沉浸式薄膜過濾;微過濾;薄膜阻塞;逆洗;過濾性能;Submerged membrane filtration;Microfiltration;Membrane blocking;Backwash;Filtration performance
語言中文
收錄於
會議性質
校內研討會地點
研討會時間20070912~20070912
通訊作者
國別中華民國
公開徵稿Y
出版型式紙本
出處2007年輸送現象及其應用研討會論文集4頁
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