中文关键词饮用水处理超滤膜臭氧氧化粉末炭吸附膜污染 英文关键词drinking water treatmentultrafiltrationozonepowered activated carbonfouling

作者	单位	E-mail
董秉直	同济大学环境科学与工程学院, 上海 200092 同济大学长江环境教育部重点实验室, 上海 200092	dbz77@tongji.edu.cn
高昊旸	同济大学环境科学与工程学院, 上海 200092
胡孟柳	同济大学环境科学与工程学院, 上海 200092

中文摘要 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. 英文摘要 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 (M_r) compounds and the high M_r was transferred to medium and small M_r hydrophilic fractions. Ozone could control fouling effectively, demonstrating that hydrophobic organic matter with higher M_r contributed to membrane fouling. PAC adsorbed organics with small M_r and alleviated membrane fouling, showing that organics with small M_r 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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