Simultaneous Nitrogen and Phosphorus Removal in a Continuously Fed and Aerated Membrane Bioreactor
Publication: Journal of Environmental Engineering
Volume 131, Issue 10
Abstract
This research demonstrated the feasibility of simultaneous biological nitrogen and phosphorous removal in a single tank membrane bioreactor without cycling of air and/or feed through operation at a low dissolved oxygen (DO) and a high biomass concentration. Chemical oxygen demand removal efficiency was more than 98% and total nitrogen removal efficiency was 55%. Seventy-five percent of the total nitrogen removal was through simultaneous nitrification–denitrification (SND) and 25% through assimilation into the biomass. Interestingly, more than 98% phosphorous was removed and microbiological analysis showed the presence of polyphosphate-accumulating organisms in the activated sludge. The operating mixed-liquor suspended solids was between 16 and . The optimum DO was found to be .
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Acknowledgment
This work was fully funded by Natural Sciences and Engineering Research Council of Canada (NSERC).NRC
References
Adam, C., Gnirss, R., Lesjean, B., Buisson, H., and Kraume, M. (2002). “Enhanced biological phosphorous removal in membrane bioreactors.” Water Sci. Technol., 46(4–5), 281–286.
Ahn, K. H., Sonh, K. G., Cho, E., Cho, J., Yun, H., Lee, S., and Kim, J. (2003). “Enhanced biological phosphorous and nitrogen removal using a sequencing anoxic/anaerobic membrane bioreactor (SAM) process.” Desalination, 157, 345–352.
APHA (1998). Standard methods for the examination of water and wastewater, 20th Ed.
Hu, Z. R., Wentzel, M. C., and Ekama, G. A. (2002). “Anoxic growth of phosphate-accumulating organisms (PAOs) in biological nutrient removal activated sludge systems.” Water Res., 36, 4927–4937.
Li, Y., and Gregory, S. (1974). “Diffusion of ions in see water and in deep-see sediments.” Geochim. Cosmochim. Acta, 38, 703–714.
Lu, S. G., Imai, T., Ukita, M., Sekine, M., Higuchi, T., and Fukagawa, M. (2001). “A model for membrane bioreactor process based on the concept of formation and degradation of soluble microbial products.” Water Res., 35(8), 2038–2048.
Metcalf & Eddy, Inc., Tchobanoglous, G., Burton, F. L., and Stensel, H. D. (2003). Wastewater engineering, treatment and reuse, 4th Ed., McGraw–Hill, New York, 704.
Nagaoka, H. (1999). “Nitrogen removal by submerged membrane separation activated sludge process.” Water Sci. Technol., 39(8), 107–114.
Perry, R. H., and Green, D. (1984). Perry’s chemical engineers’ handbook, 6th Ed., McGraw–Hill, New York, 3–258.
Pochana, K., and Keller, J. (1997). “Study of factors affecting simultaneous nitrification denitrification.” Water Sci. Technol., 39(6), 61–68.
Pochana, K., Keller, J., and Lant, P. (1999). “Model development for simultaneous nitrification denitrification.” Water Sci. Technol., 39(1), 235–243.
Sidat, M., Bux, F., and Kasan, H. C. (1999). “Polyphosphate accumulation by bacteria isolated from activated sludge.” Water SA, 25(2), 175–179.
Turk, O., and Mavinic, D. S. (1987). “Benefits of using selective inhibition to remove nitrogen from highly nitrogenous wastes.” Environ. Technol. Lett., 8(9), 419–426.
Yoo, H., Ahn, K. H., Lee, H. J., Lee, K. H., Kwak, Y. J., and Song, K. G. (1999). “Nitrogen removal from synthetic wastewater by simultaneous nitrification and denitrification (SND) via nitrite in an intermittently-aerated reactor.” Water Res., 33(1), 145–154.
Zeng, R. J., Lemaire, R., Yuan, Z., and Keller, J. (2003). “Simultaneous nitrification denitrification and phosphorous removal in a lab scale sequencing batch reactor.” Biotechnol. Bioeng., 84(2), 170–178.
Zhang, B., Yamamoto, K., Ohgaki, S., and Kamiko, N. (1997). “Floc size distribution and bacterial activities in membrane separation activated sludge processes for small scale wastewater treatment/reclamation.” Water Sci. Technol., 35(6), 37–44.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 10 • October 2005
Pages: 1469 - 1472
Copyright
© 2005 ASCE.
History
Received: Dec 17, 2003
Accepted: Feb 28, 2005
Published online: Oct 1, 2005
Published in print: Oct 2005
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