| 混凝—微滤工艺去除膜反洗水中有机物的试验研究 |
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| 引用本文： | WANG Xiao-dong,钟梓洁,ZHANG Ling-ling,杨东,GU Ping.混凝—微滤工艺去除膜反洗水中有机物的试验研究[J].中国给水排水,2008,24(15). |
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| 作者姓名： | WANG Xiao-dong 钟梓洁 ZHANG Ling-ling 杨东 GU Ping |
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| 作者单位： | 天津大学环境科学与工程学院,天津,300072 |
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| 基金项目： | 天津市科技创新专项资金资助项目 |
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| 摘 要： | 采用混凝-微滤工艺处理混凝-超滤中试装置的膜反洗水(MBW),将试验原水和出水经不同截留分子质量的超滤膜过滤,分析了不同分子质量区间的有机物分布.此外通过改变混凝剂(FeCl3)投量、采取投加粉末活性炭(PAC)等措施,考察了MBW中有机物的去除率与FeCl3投量、处理工艺(混凝-微滤、混凝-PAc吸附-微滤工艺)的关系.研究结果表明,MBW中DOC主要分布在分子质量>30 ku和分子质量<1 ku的区间内,THMFP、UV254主要集中在分子质量<1ku的区间内;混凝过程能有效去除分子质量>30 ku的大分子有机物,PAC能有效去除小分子有机物;随混凝剂投量的增加,对DOC、UV254、THMFP的去除率均有不同程度的提高.
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| 关 键 词： | 混凝 微滤 膜反洗水 有机物分子质量分布 |
Study on Removal of Organic Matters from Membrane Backwash Water by Coagulation/Microfiltration |
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| WANG Xiao-dong,ZHONG Zi-jie,ZHANG Ling-ling,YANG Dong,GU Ping.Study on Removal of Organic Matters from Membrane Backwash Water by Coagulation/Microfiltration[J].China Water & Wastewater,2008,24(15). |
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| Authors: | WANG Xiao-dong ZHONG Zi-jie ZHANG Ling-ling YANG Dong GU Ping |
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| Affiliation: | WANG Xiao-dong,ZHONG Zi-jie,ZHANG Ling-ling,YANG Dong,GU Ping(School of Environment Science , Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | A bench-scale coagulation/microfiltration system was applied to treat the membrane backwash water(MBW)from a pilot-scale coagulation/ultrafiltration system.The MBW and treated water were filtered by ultrafiltration membranes with different molecular weight cut-off to analyze the distribution of organic matters with various molecular weights.The relations of the removal rates of organic matters in MBW with the dosage of FeCl3 and the treatment processes(coagulation/microfiltration and coagulation/PAC adsorpt... |
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| Keywords: | THMFP |
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