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Home > Archive>Volume 47, Issue 01, 2019 >0079-0084. DOI:10.11908/j.issn.0253-374x.2019.01.010
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Fouling Mechanism in Water Treated by Micro-coagulation Filtration with Metallic Membranes
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    Abstract:

    Micro-polluted water was treated by micro-coagulation filtration with metallic membranes. The operation and fouling mechanism of micro-coagulation filtration with metallic membranes were investigated by electronic differential system(EDS), scanning transmission electro (SEM) and membrane fouling model. The highest removal rates in turbidity, UV254 and CODMn were 97.4%、80.9% and 64.6% respectively by using 0.3 μm metallic film. The specific flux (S) was increased gradually from 44.44 L?(m2?h?kPa)-1 to 58.33 L?(m2?h?kPa)-1 with constant flux operation and S was decreased from 47.91 L?(m2?h?kPa)-1 to 17.63 L?(m2?h?kPa)-1 with constant pressure operation. The result shows S of constant flux operation is higher than that of the constant pressure operation, indicating lower membrane fouling in constant flux operation. O, Al and Si increase obviously in polluted metallic membrane, suggesting that the main component of the contaminant may be aluminum silicate. The main fouling is cake layer pollution in metallic membrane by SEM and fouling model.

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LI Weiying, WU Xuan, QI Wanqi, YANG Feng, DING Kai, XIANG Yuan. Fouling Mechanism in Water Treated by Micro-coagulation Filtration with Metallic Membranes[J].同济大学学报(自然科学版),2019,47(01):0079~0084

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History
  • Received:March 28,2018
  • Revised:November 21,2018
  • Adopted:July 05,2018
  • Online: January 25,2019
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