SMSBR处理焦化废水的膜污染机理研究阻力的90以上，并随.pdfVIP

SMSBR 处理焦化废水的膜污染机理研究 作者：李春杰 1 耿琰 2 周 琪 2 顾国维 2 简介： 在采用 SMSBR 处理焦化废水的过程中，通过对污泥进行终端过滤来反映膜污 染机理，着重考察了过滤过程中的阻力分布，并通过标准堵塞过滤定律和沉积过滤定律来拟 合膜过滤过程，从而确定了膜污染的控制因素。污泥的阻力分布试验表明，沉积层阻力占总 阻力的 90% 以上，并随压力的升高而增大，而内部污染阻力所占比例最小；污泥的终端过g r 滤过程严格符合沉积过滤定律，即使在过滤初期也不受堵塞过滤的控制，这与阻力分布的结 o 果相对应；污泥在终端过滤过程中膜的相对通量随过滤时间呈指数衰减趋势，并在几分钟内 . 就达到相对稳定值，且低压对应较高的相对通量，但通量衰减指数和压力之间没有相关性； 污泥的压密指数为 0.7015 。 网er 水t 关键字：SMSBR 焦化废水 膜污染机理 终端过滤 a 镇w y 中图分类号：TU991.2 城it 文献标识码：A 国 c 文章编号：1000-4602(2002)04-0005-05 中na Mechanism of Membrane Fouling in Coke Wastewater Treatment bySubmerged Membra ne i Sequencing Batch Reactor h c LI Chun jie1, GENG Yan2, ZHOU Qi2, GU Guo 　 wei2 w. (1.School of Environmental Science and Engineering,Shanghai Jiaotong University, w Shanghai 200240,China; w 2.State Key Lab of Pollution Control and Resource Reuse, Tongji University,Shanghai 200092,China) Abstract ：In coke wastewater treatment by submerged membrane sequencing batch reactor (SMSBR),the mechanism of membrane fouling was studied by means of dead-end filtration of activated sludge.The study focused on the resistance distribution in filtra tion and the use of standard blocking filtration law and cake filtration law to fit in with the membrane filtration,and thus determining the factors that control the membrane fouling.The test on resistance distribution showed that the cake resistance makes up over 90% of total resistance and is increased with the rising of pressure,wh