| 不同有机物组分对膜污染影响的中试研究 |
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| 引用本文： | 辛凯,马永恒,董秉直.不同有机物组分对膜污染影响的中试研究[J].给水排水,2011,37(1). |
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| 作者姓名： | 辛凯 马永恒 董秉直 |
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| 作者单位： | 1. 同济大学环境科学与工程学院,上海,200092
2. 同济大学长江水环境教育部重点实验室,上海,200092 |
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| 基金项目： | “十一五”国家科技支撑计划项目(2006BAJ08B02); 国家水体污染控制与治理科技重大专项(2008ZX07421-006) |
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| 摘 要： | 采用粉末活性炭、混凝沉淀和超滤膜联用的技术对某低浊湖水进行中试研究。试验结果表明,采用的超滤膜及其工艺系统不仅能有效地去除浊度及悬浮颗粒,还可将CODMn由4.17mg/L降至3mg/L以下。试验将有机物分离为强疏水、弱疏水、极性亲水和中性亲水四种组分,研究不同组分对膜污染的影响。试验结果显示,预处理和超滤膜能有效去除疏水性和极性亲水性有机物,但对中性亲水性有机物的去除效果较差。反冲洗能有效清除累积在膜内的疏水性和极性亲水性有机物,但难以清洗中性亲水性组分。药剂清洗可有效去除中性亲水性有机物。疏水组分造成膜的可逆污染,而中性亲水组分导致膜的不可逆污染。三维荧光分析表明,造成不可逆污染的有机物主要在Ex238/Em345区域响应。
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| 关 键 词： | 饮用水处理 超滤膜 膜污染 有机物组分 三维荧光 |
Pilot experiment on the influences of different fractions of NOM on membrane fouling |
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| Xin Kai,Ma Yongheng,Dong Bingzhi.Pilot experiment on the influences of different fractions of NOM on membrane fouling[J].Water & Wastewater Engineering,2011,37(1). |
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| Authors: | Xin Kai Ma Yongheng Dong Bingzhi |
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| Affiliation: | Xin Kai1,Ma Yongheng1,Dong Bingzhi2(1.School of Environmental Science and Engineering,Tongji University,Shanghai 200092,China,2.Key Laboratory of Yangtze River Water Environment,Ministry of Education,China) |
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| Abstract: | The ultra-filtration(UF) membrane combined with powdered activated carbon(PAC) and coagulation process was used to treat the lake water with low turbidity.The combined UF process could remove not only turbidity and particle concentration but also organics effectively,with CODMn(CODMn in raw water is 4.17 mg/L) decreased lower than 3 mg/L.NOM(natural organic matter) was fractioned into strong hydrophobic acids(SHA),weakly hydrophobic acids(WHA),charged hydrophilic(Char),and neutral hydrophilic(Neut) fraction... |
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| Keywords: | Drinking water treatment UF membrane Membrane fouling NOM fraction Three dimensional excitation-emission matrix fluorescence |
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