Engineering and Technology Journal

Membrane Bioreactor with External Side-Stream Membranes and High Cross Flow Velocity to Treat Municipal Wastewater

Authors

1 Ministry of Science and Technology, Baghdad, Iraq, mdixonjul1459@gmail.com

2 Ministry of Science and Technology, Baghdad, Iraq, talibrshd@yahoo.com

3 Ministry of Science and Technology, Baghdad, Iraq, alfuraiji79@gmail.com

4 Ministry of Science and Technology, Baghdad, Iraq, raidali1962@yahoo.com

Abstract

In this work, a pilot unit using side-stream MBR configuration was operated in BioFlow mode (i.e. no back pulse) and BioPulse mode (with intermittent back pulses) to treat municipal wastewater with relatively low MLSS. The results showed that the trans-membrane pressure (TMP) was less in the case of BioPulse over the whole period of system operation compared to that of BioFlow mode. However, the energy consumption per unit volume of permeated water is slightly higher in the case of BioFlow mode (3.4 kW.hr/m3) than that in the case of BioPulse mode (3.2 kW.hr/m3). Therefore, operation in BioPulse is preferable due to stable TMP caused by nearly fully recoverable fouling type, which results in lower chemical cleaning frequency. The MBR unit showed steady performance at a flux of 60 L/m2.hr. The system could achieve good water quality that satisfies Iraqi standards requirements for wastewater reuse or discharge to water resources

Keywords

References
 
[1] M. Al-Furaiji, U. Karim, D. Augustijn, B. Waisi, S. Hulscher, “Evaluation of water demand and supply in the South of Iraq,” J. Water Reuse Desalin, Vol. 6, pp. 214–226, 2015.
[2] K. Gurung, M. C. Ncibi, M. Sillanpää, “Assessing membrane fouling and the performance of pilot-scale membrane bioreactor (MBR) to treat real municipal wastewater during winter season in Nordic Regions,” Sci. Total Environ., Vol. 579, pp. 1289–1297, 2017.
[3]   S. I. Bouhadjar, S.A. Deowan, F. Galiano, A. Figoli, J. Hoinkis, M. Djennad, “Performance of commercial membranes in a side-stream and submerged membrane bioreactor for model textile wastewater treatment,” Desalin. Water Treat, Vol. 57, pp. 5275–5285, 2016.
[4] B. Günder, K. Krauth, “Replacement of secondary clarification by membrane separation - results with tubular, plate and hollow fiber modules,” Water Sci. Technol, Vol. 40, pp. 311–320, 1999.
[5]   A. K. Pabby, S. S. H. Rizvi, A. M. Sastre, “Handbook of membrane separations : Chemical, Pharmaceutical, Food, and Biotechnological Applications,” CRC Press, 2009.
[6]   Y. Zheng, W. Zhang, B. Tang, J. Ding, Y. Zheng, Z. Zhang, “Membrane fouling mechanism of biofilm-membrane bioreactor (BF-MBR): pore blocking model and membrane cleaning,” Bioresource. Technology, Vol. 250, pp. 398–405, 2018.
[7]   M. Aslam, A. Charfi, G. Lesage, M. Heran, J. Kim, “Membrane bioreactors for wastewater treatment: a review of mechanical cleaning by scouring agents to control membrane fouling,” Chem. Eng. J., Vol. 307, pp. 897–913, 2017.
[8] A.G. Fane, S. Chang, E. Chardon, “Submerged hollow fiber membrane module - design options and operational considerations,” Desalination, Vol. 146, pp. 231–236, 2002.
[9] C. Shin, J. Bae, “Current status of the pilot-scale anaerobic membrane bioreactor treatments of domestic wastewaters: a critical review,” Bioresource, Technology Vol.  247, pp. 1038–1046, 2018.
[10] M. Heran, F. Durante, J. Lebegue, A. Grasmick, “Air lift relevance in a side-stream MBR system,” Desalination, 199, 485–486, 2006.
[11] G. Di Bella, D. Di Trapani, S. Judd, “Fouling mechanism elucidation in membrane bioreactors by bespoke physical cleaning,” Sep. Purif. Technology. Vol. 199, pp. 124–133, 2018.
[12] G. Berghof, Technical training, 2014.
[13] S. J. Judd, “The MBR book, principles and applications of membrane bioreactors in water and wastewater, treatment,” Second Edition, Elsevier, Oxford, UK, 2010.
Engineering and Technology Journal
Volume 38, 1A
January 2020
Page 1-8
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