Membrane fouling characteristics analysis of high concentration powdered activated carbon-microfiltration integrated system  

作　　者：严晓菊 于水利 杨旭 时文歆 安延涛 

机构地区：[1]School of Municipal and Environmental Engineering,Harbin Institute of Technology [2]School of Geography,Harbin Normal University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2010年第3期345-350,共6页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National High Technology Research and Development Program of China (863 Programs)(Grant No.20060106Z3036);the National Nat-ural Science Foundation of China (Grant No. 50778050);the Fundamental Research Funds for the Central Universities (Grant No.B1020016)

摘　　要：The membrane fouling characteristics of high concentration powdered activated carbon-microfiltration (HCPAC-MF) integrated process are studied by comparing them with those of direct microfitration system using the particle counter,scanning electron microscope (SEM) and atomic force microscope (AFM). The results indicate that the specific flux of HCPAC-MF is 3 times better than that of the direct filtration process after the system is stabilized. The addition of HCPAC changes the particle distribution of raw water and influences the structure of surface fouling layer. The PAC with irregular shapes aggregating on the membrane surface makes the cake layer structure loose and increases the roughness of membrane surface,and this decreases the thickness of hydrodynamic boundary layer and the membrane resistance. After the physical cleaning,the membrane surface and pores are clean without any fouling matters aggregation,which illustrates that the cake layer of PAC can be formed quickly in this HCPAC environment and prevent the occurrence of irreversible fouling.The membrane fouling characteristics of high concentration powdered activated carbon-microfihration （HCPAC-MF） integrated process are studied by comparing them with those of direct microfitration system using the particle counter, scanning electron microscope （SEM） and atomic force microscope （AFM）. The results indicate that the specific flux of HCPAC-MF is 3 times better than that of the direct filtration process after the system is stabilized. The addition of HCPAC changes the particle distribution of raw water and influences the structure of surface fouling layer. The PAC with irregular shapes aggregating on the membrane surface makes the cake layer structure loose and increases the roughness of membrane surface, and this decreases the thickness of hydrodynamic boundary layer and the membrane resistance. After the physical cleaning, the membrane surface and pores are clean without any fouling matters aggregation, which illustrates that the cake layer of PAC can be formed quickly in this HCPAC environment and prevent the occurrence of irreversible fouling.

关 键 词：PAC MF membrane fouling SEM AFM 

分 类 号：TU991.2[建筑科学—市政工程]