Nitrification and Denitrification Processes for Biologic Treatment of Industrial Effluents
Nitrification process performance was evaluated using a three-phase fluidized-bed bioreactor. A synthetic effluent was used for this experiment containing 180–230 mg/L of chemical oxygen demand (COD), 25–30 mg/L of N-NH4 +, 12 to 13 mg/L of total phosphorous, and micronutrients. The bioreactor used for denitrification behaved as completely mixed. The results indicate that the nitrification process was efficient, reaching efficiencies of about 98%. The best results related to the efficiency of the denitrification process were obtained when the processes were supplemented with the carbon source. The results indicated an efficiency of 86–98% COD removal.
Index EntriesNitrification denitrification three-phase fluidized-bed bioreactor Nitrobacter Nitrosomonas
Unable to display preview. Download preview PDF.
- 1.Cooper, P. F. and Williams, S. C. (1990), Water Sci. Technol. 22, 431–442.Google Scholar
- 2.Boongorsrang, A., Kenichi, S., and Yoshimichi, M. (1982), J. Ferment. Technol. 60, 357–362.Google Scholar
- 5.Rosa, M. F. (1997), PhD thesis, DEQ/DEB-EQ, UFRJ, Rio de Janeiro-RJ, Brazil.Google Scholar
- 6.Yatong, X. (1995), Water Treat. 10, 81–88.Google Scholar
- 9.Cheng, S. and Chen, W. (1994), Water Sci. Technol. 30, 131–142.Google Scholar
- 12.Tavares, C. R. G. (1992). PhD thesis, COPPE/UFRJ, Rio de Janeiro-RJ, Brazil.Google Scholar
- 13.Koroleff, K. (1983), in Methods of Seawater Analysis, Grasshoff, E. and Kremling, S., eds., Verlag Chemie, Weinhein, Germany, pp. 126–127.Google Scholar
- 14.Abeling, U. and Seyfried, C. F. (1992), Water Sci. Technol. 26, 1007–1015.Google Scholar