| 曝气强度对SMBR膜污染的影响 |
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| 引用本文： | 秦哲,徐高田,徐静,赵军,赵朋卫,李庆. 曝气强度对SMBR膜污染的影响[J]. 中北大学学报(自然科学版), 2009, 30(4): 370-375 |
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| 作者姓名： | 秦哲 徐高田 徐静 赵军 赵朋卫 李庆 |
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| 作者单位： | 河北大学,化学与环境科学学院,河北,保定,071000;上海大学,环境科学与工程系,上海,200072;上海市环境保护局,上海,200050;上海大学,环境科学与工程系,上海,200072 |
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| 基金项目： | 上海市中新国际合作项目资助 |
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| 摘 要： | 改变曝气强度是控制SMBR(Submerged Membrane Bioreactor)膜污染的重要手段之一.在不同的曝气强度下考察了膜过滤压差随时间的变化情况,膜阻力构成情况和污泥指数SVI(Sludge Volume Index)的变化对膜污染的影响.结果表明:曝气强度过大或过小,压差上升速率都会增大;随着曝气强度的增大,Rp,Ref,Rc在过滤总阻力中所占的比例都会逐渐减小,Rif在过滤总阻力中所占的比例逐渐增大;当曝气强度低于0.88 m3·m-2·h-1时,水力剪切力主要作用于膜污染的消除,而对活性污泥的性质没有多大影响,SVI变化不大,因此压差上升速率随曝气强度的增加而降低;而当曝气强度高于0.88 3·m-2·h-1时,水力剪切力过大,导致污泥絮体结构被破坏,SVI明显增大,从而加速了膜的污染,使压差上升速率随曝气强度的增加而增加.
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| 关 键 词： | 曝气强度 膜生物反应器 膜污染 SVI |
Effect of Aeration Intensity on Membrane Fouling of SMBR |
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| QIN Zhe,,XU Gao-tian,XU Jing,ZHAO Jun,ZHAO Peng-wei,LI Qing. Effect of Aeration Intensity on Membrane Fouling of SMBR[J]. Journal of North University of China, 2009, 30(4): 370-375 |
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| Authors: | QIN Zhe XU Gao-tian XU Jing ZHAO Jun ZHAO Peng-wei LI Qing |
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| Affiliation: | 1.College of Chemistry and Environmental Science;Hebei University;Baoding 071000;China;2.Dept.of Environmental Science and Engineering;Shanghai University;Shanghai 200072;3.Shanghai Environmental Protection Bureau;Shanghai 200050;China |
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| Abstract: | Changing aeration intensity is one of the important measures to control membrane fouling of Submerged Membrane Bioreactor(SMBR).Under different aeration intensity,variation of membrane filtration pressure with time and the distribution of the membrane filtration resistance,as well as the influence of SVI changing on membrane fouling,were researched.Experimental results indicated that pressure increasing rate could increase when aeration intensity was either too high or too low.With aeration intensity increa... |
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| Keywords: | SVI |
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