膜生物流化床膜污染的影响因素研究  

STUDY ON THE INFLUENCING FACTORS OF MEMBRANE FOULING IN MEMBRANE BIOLOGICAL FLUIDIZED BED

作　　者：郭杨[1] 王世和[1] 马金霞[1] 

机构地区：[1]东南大学市政工程系,江苏南京210096

出　　处：《水处理技术》2009年第6期28-31,共4页Technology of Water Treatment

基　　金：江苏省建设厅资助项目(JS200308)

摘　　要：膜生物流化床(MBFB)是将传统生物流化床与膜生物反应器(MBR)有机结合的产物。试验采用恒定膜通量间歇出水方式,以跨膜压力(TMP)随时间的变化情况为考察指标,研究了膜通量、曝气强度、出水抽/停时间对MBFB膜污染的影响。结果表明,在次临界通量条件下(3.2～8.2L·m-·2h-1),MBFB膜污染速率得到明显控制;曝气强度对TMP上升速率影响显著;连续抽吸时间对膜污染的影响比停抽时间更为明显。在总生物浓度为8.0g·L-1左右时,膜通量为5L·m-·2h-1、气水比为25:1、出水抽/停时间为5～7min/3min的条件下,可控制MBFB的膜污染始终保持在较低水平。Membrane biological fluidized bed （MBFB） is a brand new technology combining membrane bioreactor（MBR） to conventional biological fluidized bed for sewage treatment. The influence of membrane flux, aeration intensity and suction/suspending suction time on membrane fouling in membrane biological fluidized bed （MBFB） were studied by taking the change of transmembrane pressure（TMP） with operation time as investigating target. Results indicated that the membrane fouling rate of MBFB could be controlled with sub-critical constant flux （3,2-8.2 L·m^2·h^-1）; The average rate of membrane fouling was affected evidently by aeration intensity; suction time had the more impact on membrane fouling than suspending suction time. In order to control membrane fouling, flux of 5 L·m^2·h^-1, aeration intensity of 25：1, suction/suspending suction time of 5 - 7/3 min were recommended according to the test under the condition of total biomass Concentration was about 8.0 g·L^-1.

关 键 词：膜生物流化床 膜污染 跨膜压力 

分 类 号：TQ028.8[化学工程]