Atomic Force Microscopy Study on Fouling Characteristics of Modified PES Membrane in Submerged Membrane Bioreactor for Domestic Wastewater Treatment
(0) To investigate the fouling characteristics of modified PES membrane in submerged Membrane Bioreactor (MBR) for domestic wastewater treatment, Atomic Force Microscope (AFM) study was conducted to analyze the microstructure characteristics of PES membrane. Surface roughness and section analysis of both virgin and fouled membrane were achieved by software of NanoScope 6.12. Compared to the virgin membrane, the average roughness (Ra), square average roughness (Rms) and ten points average roughness (Rz) of fouled membrane were increased by 100.6nm, 133.7nm and 330.7nm respectively. The section analysis results indicated that the cake layer formed and membrane pore blocked were the main causes for the increase of TMP. Micro-filtration resistance analysis was conducted to support the results of AFM analysis. It is showed that membrane resistance, cake resistance, pore blocking and irreversible fouling resistance is 0.755, 1.721 and 1.386 respectively, which contributed 20％, 44％, and 36％, respectively, to total resistance of submerged MBR (at MLSS 6000mg/L and flux 21.9L/m2·h). The results proved that AFM could be used to properly describe the fouling characteristics of modified PES membrane in submerged MBR through roughness and section analysis.
AFM submerged MBR membrane fouling modified PES membrane
Liu Shuo Han Hongjun Liu Yanping Wang Baozhen
School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O.Box2430 No. 2 School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O.Box2430 No. 2 College of Chemical Engineering, Beijing University of Chemical Technology, CHINA, 100029 School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O.Box 2430 No.
国际会议
第五届仪器科学与技术国际学术会议(ISIST 2008)Fifth International Symposium on Instrmentation Science and Technology
沈阳
英文
1-6
2008-09-15（万方平台首次上网日期，不代表论文的发表时间）