臺灣博碩士論文加值系統

本論文是針對薄膜超過濾模組沿通道改變螺旋捆線角度來作濾速的分析與研究，此實驗中的濾速分析是採用較符合輸送現象的阻力串聯模式，實驗採用之溶質為Dextran T500。並藉由改變進口溶液的濃度、體積流率、透膜壓差以及沿通道改變螺旋捆線角度得到一系列的實驗值。無論是理論分析或實驗結果，我們比較在螺旋狀環型管道中的薄膜超過濾模組之濾速，沿通道改變角度的濾速會比固定角度的來的好。

The effect of operating conditions on the permeate flux in a wired ultrafiltration membrane module with the wire angle varied along the path, has been investigated. The analysis of the permeate flux is based on the resistance in series model. Experiments for the ultrafiltration of Dextran T500 aqueous solution were carried out. It was found from both theoretical predictions and experimental results that permeate flux obtained by varying the angle of wire spiral through wired membrane ultrafiltration modules who better than that with fixed angle one.

圖索引 IV
表索引 VI
第一章 序論 1
1-1 薄膜定義及應用 1
1-2 薄膜分離方法之比較 8
1-3 研究目標 11
第二章 文獻回顧 13
2-1 薄膜超過濾 13
2-2 影響濾速的因素 15
2-2.1 分子的形狀 15
2-2.2 壓力 15
2-2.3 溶液濃度 15
2-2.4 溫度 16
2-2.5 流速的影響 16
2-3 濃度極化現象與結垢現象 18
2-4 濃度極化與結垢的控制方法 19
2-4.1 薄膜材質 21
2-4.2 流體操作 21
2-4.3 清洗程序 26
2-5 超過濾的應用 29
第三章 理論分析 31
3-1 濾速模式分析 31
3-1.1 滲透壓模式 32
3-1.2 膠層極化模式 33
3-1.3 指數模式 35
3-1.4 雙曲線正切模式 36
3-1.5 阻力串聯模式 36
3-2 理論部份 37
第四章 實驗裝置與方法 41
4-1 實驗裝置 41
4-2 各種操作條件 45
4-3 實驗步驟及方法 45
4-4 注意事項 46
第五章 實驗結果與討論 47
5-1 純水濾速與薄膜阻力 47
5-2 參數之求法 51
5-3 實驗公式之求法 59
第六章 結論 76
符號說明 78
參考文獻 81
附錄(A) Dextran T500 溶液之物理性質 85
附錄(B) Dextran T500 溶液之濾速實驗值86

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