Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
권호 표지
DOI QR코드

DOI QR Code

Applicability evaluation of microbubble for membrane fouling reduction in wastewater reuse membrane process

하수재이용 막여과 공정에서 막오염 저감을 위한 마이크로버블 적용성 평가

  • Received : 2017.03.14
  • Accepted : 2017.03.27
  • Published : 2017.04.20
Download PDF
⟨ Previous Next ⟩

Abstract

This study applied microbubbles to reduce membrane fouling in wastewater reuse membrane processes, evaluated and compared the transmembrane pressure with or without the application of microbubbles and the cleaning efficiency with the application of aeration and microbubbles. In addition, this study analyzed foulants removed from the membrane surface. Changes in the transmembrane pressure of membranes with the presence or absence of microbubbles were observed. As a result, transmembrane pressure (TMP) increasing rate decreased twofold when applying microbubbles to realize stable operations. This study compared and evaluated cleaning efficiency applying aeration and microbubbles. As a result, the cleaning efficiency was 5% higher on average when applying microbubbles. In turbidity and total organic carbon (TOC), foulants were discharged when applying microbubbles twice as much as applying aeration. It is thought that particulate foulants precipitated on the membrane surface were more likely to desorb because the adhesion between the membrane surface and particle was weakened by microbubbles. Therefore, it is considered possible to effectively control membrane fouling because of the increase in cleaning efficiency when applying microbubbles to wastewater reuse membrane processes.

Keywords

References

  1. Agarwal, A., Ng, W.J., Liu, Y. (2011). Principle and applications of microbubble and nanobubble technology for water treatment, Chemosphere, 84(9), 1175-1180. https://doi.org/10.1016/j.chemosphere.2011.05.054
  2. Ahn, K.H., Song, K.G. (1998). Characteristics of backwashing factors in ultrafiltration for wastewater reclamation, Korean society of water Science and Technology, 6(1), 25-32.
  3. Field, R.W., Wu, D., Howell, J.A., Gupta, B.B. (1995) Critical flux concept for microfiltration fouling, Journal of Membrane Science, 100, 259-272. https://doi.org/10.1016/0376-7388(94)00265-Z
  4. Gwenaelle, M.P.O., Jung, J.W., Choi, Y.G., Lee, S.H. (2017) Case studies of microbubbles in wastewater treatment, Desalination, 403, 153-160 https://doi.org/10.1016/j.desal.2016.06.012
  5. Laabs, C.N, Amy, G.L., Jekel, M. (2006) Understanding the size and character of fouling-causing substances from effluent organic matter(EfOM) in low-pressure membrane filtration, Environmental Science & Technology, 40(14), 4495-4499. https://doi.org/10.1021/es060070r
  6. Pierre, L. C., Jefferson, B., Chang, I.S., Judd, S.J. (2003) Critical flux determination by the flux-step method in a submerged membrane bioreactor, Journal of Membrane Science, 227(1-2), 81-93. https://doi.org/10.1016/j.memsci.2003.07.021
  7. Roorda, J.H., Wortel, N.C., Dalen, R. (2005) New process for treatment of organically fouled water; experiences with WWTP effluent, Desalination, 178, 141-148. https://doi.org/10.1016/j.desal.2004.11.034
  8. Sadr Ghayeni, S.B., Beatson, P.J., Schneider, R.P., Fane, A.G., (1998) Water reclamation from municipal wastewater using combined microfiltration-reverse osmosis(ME-RO):Preliminary performance data and microbiological aspects of system operaton, Desalination, 116(1), 65-80. https://doi.org/10.1016/S0011-9164(98)00058-7
  9. Te Poele, S.T., Van Der Graaf, J. (2005) Enzymatic cleaning in ultrafiltration of wastewater treatment plant effluent, Desalination, 179(1-3), 73-81. https://doi.org/10.1016/j.desal.2004.11.056
  10. Wen, L.H., Ismail, A.B., Menon, P.M., Saththasivam, J., Thu, K., Choon N.K. (2011) Case studies of microbubbles in wastewater treatment, Desalination and Water Treatment, 30, 10-16 https://doi.org/10.5004/dwt.2011.1217
  11. Wu, Z., Chen, H., Dong, Y., Mao, H., Sun, J., Craig, V.S.J., Hu J. (2008) Cleaning using nanobubbles: defouling by electrochemical generation of bubbles, Journal of Colloid and Interface Science, 328, 10-14. https://doi.org/10.1016/j.jcis.2008.08.064
  12. Zhou, Z.A., Xu. Z., Finch, J.A., Masliyah, J.H., Chow, R.S. (2009). On the role of cavitation in particle collection in flotation - A critical review. II, Minerals Engineering 22(5), 419-433. https://doi.org/10.1016/j.mineng.2008.12.010