Atomic Force Microscopy Study on Fouling Characteristics of Modified PES Membrane in Submerged Membrane Bioreactor for Domestic Wastewater Treatment

被引：0

作者：

Liu Shuo ^{[1
,2
]}

Han Hongjun ^{[1
]}

Liu Yanping ^{[3
]}

Wang Baozhen ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Municipal & Environm Engn, POB 2430,202 Haihe Rd, Harbin 150090, Peoples R China

[2] Harbin Normal Univ, Sch Geog Sci, Harbin 150025, Peoples R China

[3] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China

来源：

FIFTH INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY | 2009年 / 7133卷

关键词：

AFM; submerged MBR; membrane fouling; modified PES membrane; FLUX;

D O I：

10.1117/12.810707

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 (R-a), square average roughness (R-ms) and ten points average roughness (R-z) 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/m(2).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.

引用

页数：6

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