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.
出处
《膜科学与技术》
CAS
CSCD
北大核心
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)
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
membrane bioreaetor
bio- ferric process
membrane fouling
filtration characteristics
particle size of sludge
