生物铁法-膜生物反应器中膜过滤特性的研究  

Membrane filtration characteristics in bio-ferric MBR

作　　者：冀世锋[1] 奚旦立[2] 

机构地区：[1]上海环境科学研究院,上海200233 [2]东华大学环境科学与工程学院,上海200051

出　　处：《膜科学与技术》2008年第4期19-25,共7页Membrane Science and Technology

基　　金：上海市科技委员会重点科技攻关项目(012312032)

摘　　要：在浸没式膜生物反应器(简称MBR)处理模拟印染废水的过程中,通过向反应器中投加氢氧化铁絮体,进而形成生物铁污泥,来实现膜污染的防治.从操作压力变化、污泥阻力分布、膜污染电镜照片、污泥显微镜照片、污泥粒径分布等测定和观察结果表明,生物铁法MBR污泥总阻力仅为普通MBR污泥总阻力的1/3,这说明投加氢氧化铁絮体后增加了膜水通量,明显减小了膜过滤阻力.In dyeing wastewater treatment by submerged membrane bioreactor,membrane fouling was controlled by addition of ferric hydroxide, which was expected to change activated sludge into bio - ferric activated sludge. Mechanism of membrane fouling was studied by investigating the properties of membrane dead - end filtration, resistance- in - series, varieties of operation pressure, SEM of membrane surface and size distribution of sludge. The total resistance of bio - ferric sludge was one third conventional sludge＇ s. The experimental results showed that addition of ferric hydroxide was effective way to increase membrane flux and decrease the membrane resistance and the mechanism was discussed in detail.

关 键 词：膜生物反应器 生物铁法 膜污染 膜过滤特性 污泥粒径 

分 类 号：X703[环境科学与工程—环境工程]