| 臭氧-粉末炭联用作为预处理缓解膜污染的效果与机制 |
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| 引用本文： | 董秉直,高昊旸,胡孟柳.臭氧-粉末炭联用作为预处理缓解膜污染的效果与机制[J].环境科学,2018,39(6):2732-2739. |
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| 作者姓名： | 董秉直 高昊旸 胡孟柳 |
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| 作者单位： | 同济大学环境科学与工程学院;同济大学长江环境教育部重点实验室 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项（2017ZX07201001） |
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| 摘 要： | 研究臭氧、粉末炭以及它们的组合作为超滤膜的预处理,控制膜污染以及去除有机物的效果和机制.结果表明,臭氧主要氧化强疏组分的大分子有机物,将其转化为中分子和亲水性的小分子.臭氧可有效控制膜污染,表明大分子的疏水有机物是主要的污染因素.粉末炭可吸附小分子有机物,也可缓解膜污染,说明小分子有机物也对膜污染有所贡献.臭氧与粉末炭的组合不仅有效控制膜污染,还可强化有机物的去除,它们之间存在协同作用.
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| 关 键 词： | 饮用水处理 超滤膜 臭氧氧化 粉末炭吸附 膜污染 |
| 收稿时间： | 2017/10/10 0:00:00 |
| 修稿时间： | 2017/12/9 0:00:00 |
Effects and Mechanism of the Combination of Ozone-PAC as a Pretreatment for the Reduction of Membrane Fouling |
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| DONG Bing-zhi,GAO Hao-yang and HU Meng-liu.Effects and Mechanism of the Combination of Ozone-PAC as a Pretreatment for the Reduction of Membrane Fouling[J].Chinese Journal of Environmental Science,2018,39(6):2732-2739. |
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| Authors: | DONG Bing-zhi GAO Hao-yang and HU Meng-liu |
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| Institution: | School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China,School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China and School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | The effects of ozone, powdered activated carbon (PAC), and their combination on controlling fouling and the removal of organic matter were investigated. The results showed that ozone mainly oxidized strong hydrophobic, high relative molecular mass (Mr) compounds and the high Mr was transferred to medium and small Mr hydrophilic fractions. Ozone could control fouling effectively, demonstrating that hydrophobic organic matter with higher Mr contributed to membrane fouling. PAC adsorbed organics with small Mr and alleviated membrane fouling, showing that organics with small Mr contributed also to membrane fouling. The ozone and PAC combination controlled membrane fouling and also enhanced the removal of organics, demonstrating the synergistic effect of such a combination. |
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| Keywords: | drinking water treatment ultrafiltration ozone powered activated carbon fouling |
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