https://scholars.lib.ntu.edu.tw/handle/123456789/76759
標題: | 以薄膜程序去除水中溶解性有機質之研究(III) USE OF ULTRAFILTRATION FOR REMOVAL OF DISSOLVED ORGANIC MATTER (III) |
作者: | 林正芳 | 關鍵字: | 超滲透薄膜;DAX-8;活性碳;GFC;親水性;疏水性;滲流率;積垢;濃度極化;NOM;fouling;PAC;hydrophobicity;ultrafiltration humic acid | 公開日期: | 31-七月-1999 | 出版社: | 臺北市:國立臺灣大學環境工程學研究所 | 摘要: | 本研究是探討親疏水性有機物對超滲透薄膜於水處理程序中的影響。研究中以DAX-8 樹脂以及活性碳吸附的方式分離腐植酸,並以GFC 分離分子量大小,分離後的水樣以超滲透薄膜進行過濾實驗,探討自然有機物水樣的親、疏水特性對薄膜過濾之影響。 The objective of this study is to investigate the effect of hydrophobicity of NOM on ultrafiltration operation in water industry. DAX-8 resin was used for isolating hydrophilic and hydrophobicNOM compounds and GFC was for fractionating various NOM molecular weight size. UF of humic acid containing water has shown to be greatly dependent on the hydrophobic and hydrophilic components of NOM. UF perneate flux was significant affected by the hydrophilic compounds. This flux decline was primary due to the irreversible fouling resulted from the gel layer on the membrane surface. Molecular size seems to play a very important role on the UF permeate flux. Larger NOM molecules causes severe flux decline probably due to the size blocking effect. Use of PAC in conjunction with UF provide an efficient way in enhancing TOC removal from water treatment process. However, the UF-PAC hybrid system does cause even severe flux decline. we can assure that PAC is preferable to remove the non-fouling compounds from feedwater. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/22021 | 其他識別: | 882211E002015 | Rights: | 國立臺灣大學環境工程學研究所 |
顯示於: | 環境工程學研究所 |
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882211E002015.pdf | 42.82 kB | Adobe PDF | 檢視/開啟 |
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