Abstract
Experimental work was carried out on nitrogen and phosphorus removal from real wastewater using a bench-scale SBR process. The phosphorus removal was stable and the phosphorus concentration remaining in the reactor was maintained within 1.5 ppm, regard-less of the addition of an external carbon source. In the case of nitrogen, an external carbon source was necessary for denitrification. The effect on denitrification with the addition of various carbon sources, such as glucose, methanol, acetate, and propionate, was also investigated. Acetate was found to be the most effective among those tested in this study. When 100 ppm (theoretical oxygen demand) of sodium acetate was added, the average rate of denitrifiaction was 2.73 mg NO −3 -N (g MLSS)−1 h−1, which wasca. 4 times higher than that with the addition of 200 ppm of methanol. The phosphorus and nitrogen concentrations were both maintained within 1.5 ppm by the addition of an appropriate amount of a carbon source during a long-term operation of the SBR. The mathematical modeling was performed using Monod kinetics, other microbial kinetics, mass balances, and stoichiometry. The modeling was found to be useful for predicting the SBR operation and optimizing the HRT.
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Abbreviations
- NH4 :
-
Ammonium
- NO:
-
Oxidized nitrogen
- P:
-
Phosphorus
- PHB:
-
Polyhydroxybutyrate
- poly-P:
-
Polyphosphate
- S1 :
-
Readily biodegradable substrate
- S2 :
-
Slowly biodegradable substrate
- t:
-
Time
- TN:
-
Total Nitrogen
- TP:
-
Total Phosphorus
- V:
-
Reactor working volume
- X1 :
-
Phosphorus removing microorganisms
- X2 :
-
Nitrifying microorganisms
- X3 :
-
Denitrifying microorganisms
References
Arun, V., T. Mino, and T. Matsuo (1988) Biological mechanism of acetate mediated by carbohydrate consumption in excess phosphorus removal systems.Wat. Res. 22: 565–570.
Manning, J. F. and R. L. Irvine (1985) The biological removal of phosphorus in a SBR.J. WPCF. 57: 87–94.
Nicholls, H. A. and D. W. Osborn (1979) Bacterial stress: prerequisite for biological removal of phosphorus.J. WPCF. 51: 557–569.
Rensink, J. H, H. J. G. W. Donker, and H. P. de Vries (1987) Biological P-removal in domestic wastewater by the AS process. pp. 487–502. In:Proc. 5th Environ. Sewage Refuse Symp. Munchen, Germany.
Smolders, G. F., M. C. M. van Loosdrecht, and J. J. Heijnen (1995) A metabolic model for the biological phosphorus removal process.Wat. Sci. Technol. 31: 79–93.
Wentzel, M. C., L. H. Lotter, R. E. Loewnthal, and G. V. R. Marais (1986) Metabolic behavior ofAcinetobacter spp. In enhanced biological phosphorus removal—a biochemical model.Wat. SA. 12: 209–224.
Griffiths, P. (1994) Modifications to the IAWPRC task group general AS mode,Wat. Res. 28: 657–664.
Wentzel, M. C., G. A. Ekama, and G. V. R. Marais (1992) Processes and modeling of nitrification denitrification biological excess phosphorus removal systems A review.Wat. Sci. Technol. 25: 59–82.
APHA (1992)Standard Methods for the Examination of Water and Wastewater, 18th ed. American Public Health Association, Washington, D.C., USA.
Oles, J. and P.A. Wilderer (1991) Computer aided design of sequencing batch reactors based on the IAWPRC activated sludge model.Wat. Sci. Technol. 28: 1087–1091.
Abufayed, A. A. and E. D. Schroeder (1986) Kinetics and stoichiometry of SBR/denitrification with a primary sludge carbon source.J. WPCF 58: 398–405.
Tam, N. E. Y. Y., S. Wong, and G. Leung (1992) Effect of exogenous carbon sources on removal of inorganic nutrient by the nitrification-denitrification process.Wat. Res. 26: 1229–1236.
Lee, M. W. and J. M. Park (1998) Biological nitrogen removal from coke plant wastewater with external carbon addition.Wat. Environ. Res. 70: 1090–1095.
Barnard, J. L. (1994) Alternative prefermentation systems. pp. 13–21. In:Proc. of the Conf. Seminar on Use of Fermentation to Enhance Biological Nutrient Removal. 67th Annual Water Environment Conf. and Exposition. Oct 15. Chicago, Illinoise, USA.
Shahnaz, D. and J. A. Oleszkiewicz (1997) Use of a new anaerobic-aerobic sequencing batch reactor system to enhance biological phosphorus removal.Wat. Sci. Tech. 35: 137–144.
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Lim, SJ., Moon, R.K., Lee, W.G. et al. Operation and modeling of bench-scale SBR for simultaneous removal of nitrogen and phosphorus using real wastewater. Biotechnol. Bioprocess Eng. 5, 441–448 (2000). https://doi.org/10.1007/BF02931945
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DOI: https://doi.org/10.1007/BF02931945