膜生物反应器中临界通量理论的研究

被引:35
作者
袁栋栋
樊耀波
徐国良
杨文静
于艳
吴光夏
机构
[1] 中国科学院生态环境研究中心水污染控制室
关键词
膜生物反应器; 膜污染; 临界通量;
D O I
暂无
中图分类号
X703.1 [技术方法];
学科分类号
083001 [环境科学];
摘要
膜污染是影响膜生物反应器大规模化应用的重要因素之一,而膜生物反应器在低于临界通量运行时能有效减缓膜污染.介绍了临界通量理论的概念、测定方法、产生机理和影响因素,并对各影响因素间的相互关系做了探讨.其中临界通量概念有强弱两种形式,膜生物反应器工艺应用的主要为弱形式的临界通量;临界通量的测定方法主要包括流量阶梯法、压力阶梯法和滞后效应法等;临界通量存在的机理可归结于活性污泥粒子所受的趋向于膜表面的拖曳力与粒子的返混作用达到了平衡,而拖曳力与返混力的大小主要与膜与膜组件特性、混合液性质及操作条件有关,且各个因素间相互影响.
引用
收藏
页码:97 / 103
页数:7
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