Fouling Mitigation by Composite Membrane in Membrane Bioreactors
Publication: Journal of Environmental Engineering
Volume 138, Issue 3
Abstract
Membrane bioreactors (MBRs) have attracted widespread attention in advanced water treatment because of their production of consistent and high-quality effluent. However, membrane fouling during operation has greatly hindered their application. Studies have suggested that a coating of nanoparticles on membranes may reduce membrane fouling by enhancing the hydrophilicity of the membrane. In this study, two membranes were coated with nanoparticles for membrane fouling mitigation. To evaluate the filtration performance of the composite membranes, a synthetic wastewater was prepared to model the municipal wastewater for the MBR operation. The mixed liquor from the MBR was used in the filtration test to evaluate the performance of the composite membrane. Filtration tests showed that membrane fouling was reduced substantially, which was attributable to the increased hydrophilicity of the membrane. Results also shows that optimal amount of coating is important in fouling mitigation. An ultrasonic washing test suggests that most of the particles were firmly coated on the surface of the composite membrane.
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Acknowledgments
The authors acknowledge financial support from the National Science Council of the Republic of China (Project No. UNSPECIFIED96-2628-E-009-006-MY3).
References
Bae, T. H., Kim, I. C., and Tak, T. M. (2006). “Preparation and characterization of fouling-resistant self-assembled nanocomposite membranes.” J. Membr. Sci., 275(1–2), 1–5.
Bae, T. H., and Tak, T. M. (2005a). “Effect of nanoparticles on fouling mitigation of ultrafiltration membranes for activated sludge filtration.” J. Membr. Sci., 249(1–2), 1–8.
Bae, T. H., and Tak, T. M. (2005b). “Preparation of self-assembled polymeric nanocomposite membranes and examination of their fouling mitigation effects in a membrane bioreactor system.” J. Membr. Sci., 266(1–2), 1–5.
Chang, I. S., Le Clech, P. L., Jefferson, B., and Judd, S. (2002). “Membrane fouling in membrane bioreactors for wastewater treatment.” J. Environ. Eng., 128(11), 1018–1029.
Choi, J. G., Bae, T. H., Kim, J. H., and Randall, A. A. (2002). “The behavior of membrane fouling initiation on the crossflow membrane bioreactor system.” J. Membr. Sci., 203(1–2), 103–113.
Choi, W., Termin, A., and Hoffmann, M. R. (1994). “The role of metal ion dopants in quantum-sized : Correlation between photoreactivity and charge carrier recombination dynamics.” J. Phys. Chem., 98(51), 13669–13679.
Guglielmi, G., Chiarani, D., Judd, S. J., and Andreottola, G. (2007). “Flux criticality and sustainability in a hollow fibre submerged membrane bioreactor for municipal wastewater treatment.” J. Membr. Sci., 289(1–2), 241–248.
Huang, C. P., Hsieh, W. P., Pan, J. R., and Chang, S. M. (2007). “Characteristics of an innovative composite for treatment of azo dye.” Sep. Purif. Technol., 58(1), 152–158.
Kim, S. H., Kwak, S. Y., Sohn, B. H., and Park, T. H. (2003). “Design of nanoparticle self-assembled aromatic polyamide thin-film-composite (TFC) membrane as an approach to solve biofouling problem.” J. Membr. Sci., 211(1), 157–165.
Kwak, S. Y., Kim, S. H., and Kim, S. S. (2001). “Hybrid organic/inorganic reverse osmosis (RO) membrane for bacterial anti-fouling: 1. Preparation and characterization of nanoparticle self-assembled aromatic polyamide thin-film-composite (TFC) membrane.” Environ. Sci. Technol., 35(11), 2388–2394.
Liao, B. Q., Bagley, D. M., Kraemer, H. E., Leppard, G. G., and Liss, S. N. (2004). “A review of biofouling and its control in membrane separation bioreactors.” Water Environ. Res., 76(5), 425–436.
Luo, M. L., Zhao, J. Q., Tang, W., and Pu, C. S. (2005). “Hydrophilic modification of poly(ether sulfone) ultrafiltration membrane surface by self-assembly of nanopaticles.” Appl. Surf. Sci., 249(1–4), 76–84.
Madaeni, S. S., and Ghaemi, N. (2007). “Characterization of self-cleaning RO membranes coated with particles under UV irradiation.” J. Membr. Sci., 303(1–2), 221–233.
Pan, J. R., Su, Y. C., Huang, C. P., and Lee, H. C. (2010). “Effect of sludge characteristics on membrane fouling in membrane bioreactors.” J. Membr. Sci., 349(1–2), 287–294.
Steen, M. L., Jordan, A. C., and Fisher, E. R. (2002). “Hydrophilic modification of polymeric membranes by low temperature plasma treatment.” J. Membr. Sci., 204(1–2), 341–357.
Yamato, N., Kimura, K., Miyoshi, T., and Watanabe, Y. (2006). “Difference in membrane fouling in membrane bioreactors (MBRs) caused by membrane polymer materials.” J. Membr. Sci., 280(1–2), 911–919.
Yang, Y., Zhang, H., Wang, P., Zheng, Q., and Li, J. (2007). “The influence of nano-sized fillers on the morphologies and properties of PSF UF membrane.” J. Membr. Sci., 288(1–2), 231–238.
Yu, H. Y., Hu, M. X., Xu, Z. K., Wang, J. L., and Wang, S. Y. (2005). “Surface modification of polypropylene microporous membranes to improve their antifouling property in MBR: plasma treatment.” Sep. Purif. Technol., 45(1), 8–15.
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© 2012 American Society of Civil Engineers.
History
Received: Nov 26, 2010
Accepted: Apr 28, 2011
Published online: Apr 30, 2011
Published in print: Mar 1, 2012
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