Performance Studies on Biological Treatment of SlaughterhouseWastewaterUsingMixedCulture in Sequencing Batch Reactor
The slaughterhouse and meat processing units generate large volumes of wastewater containing high organic and nitrogenous substances (COD, NH4+-N), which require considerable degree of treatment before discharge to the water body. In this regard, selecting an effective treatment system is important. Amongst various biological treatment systems sequencing batch reactor (SBR) is comparatively noble bioreactor system for treating waste containing carbon and nitrogen simultaneously. The performance of a 20 L sequencing batch reactor (SBR) treating wastewater discharged from a local small-scale slaughterhouse was examined in the laboratory at ambient temperature. The reactor was operated under three different variations of aerobic-anoxic sequence, viz. 4 + 4, 5+ 3 and 3 + 5 hours of total react period with influent soluble COD (SCOD) and ammonia nitrogen level 1000± 50 mg/L & 90 ± 10 mg/L and 2000 ± 50 mg/L & 180 ± 10 mg/L, respectively. It has been observed that 80 to
96% of SCOD removal would be possible at the end of eight hours of overall reaction period, irrespective of the length of the aerobic react period. In case of 4+4 aerobic-anoxic operating cycle, reasonable degree of nitrification 89.48% and 81.58% corresponding to initial NH4+-N value of 87.52 mg/L and 185.24 mg/L respectively, along with 94.07% and 90.23% of organic carbon removal corresponding to initial SCOD value of 1015.24 mg/L and 2028.55 mg/L respectively, have been achieved after eight hours of react period for treatment of slaughterhouse wastewater in SBR.
Al-Mutairi, N.Z., Hamoda, M.F. and I.A. Al-Ghusain (2007). Slaughterhouse wastewater treatment using date seeds as adsorbent. Journal of Environment Science and Health,55: 678-710.
Al-Mutairi, N.Z., Al-Sharifi, F.A. and S.B. Al-Shammari (2008). Evaluation study of a slaughterhouse wastewater treatment plant including contact-assisted activated sludge and DAF. Desalination, 225: 167-175.
American Public Health Association (APHA) (1991). Standard Methods for the Examination of Water and Wastewater (22nd edn). APHA, AWWA, WPCF, Washington, D.C.
Boopathy, R., Bonvillain, C., Fontenot, Q. and M. Kilgen (2007). Biological treatment of low-salinity shrimp aquaculture wastewater using sequencing batch reactor. International Biodeterioration and Biodegradation, 59: 16-19.
Cassidy, D.P. and E. Belia (2005). Nitrogen and phosphorus removal from an abattoir wastewater in a SBR with aerobic granular sludge. Water Research, 39: 4817-4823.
Del Pozo, R. and V. Diez (2005). Integrated anaerobic aerobic fixed-film reactor for slaughterhouse wastewater treatment. Water Research, 39: 1114-1122.
Kargi, F. and A. Uygur (2002). Nutrient Removal Performance of a Sequencing Batch Reactor as a Function of the Sludge Age. Enzyme Microbial. Technology, 31: 842-847.
Kern, C. and R. Boopathy (2012). Use of sequencing batch reactor in the treatment of shrimp aquaculture wastewater. Journal of Water Sustainability, 2(4): 221-232.
Kim, H.S., Choung, Y.K., Ahn, S.J. and H.S. Oh (2008). Enhancing nitrogen removal of piggery wastewater by membrane bioreactor combined with nitrification reactor. Desalination, 223: 194-204.
Lemaire, R., Yuan, Z., Nicolas, B., Marcelino, M., Yilmaz, G. and J. Keller (2009). A sequencing batch reactor system for high-level biological nitrogen and phosphorus removal from abattoir wastewater. Biodegradation, 20(3): 339-350.
Li, J.P., Healy, M.G., Zhan, X.M. and M. Rodgers (2006). Nutrient Removal from Slaughterhouse Wastewater in an Intermittently Aerated Sequencing Batch Reactor. Bioresource Technology, 52: 163-167.
Madigan, M.T., Martinko, J.M. and J. Parker (2000). Brock Biology of Microorganisms. 8th ed. Prentice-Hall, Englewood Cliffs, N.J.
Mahvi, A.H., Mesdaghinia, A.R. and F. Karakani (2004). Nitrogen Removal from Wastewater in a Continuous Flow Sequencing Batch Reactor. Pakistan Journal of Biological Sciences, 7(11): 1880-1883.
Mittal, G.S. (2006). Treatment of wastewater from abattoirs before land application—A review. Bioresour Technology,97: 1119-1135.
Painter, H.A. (1977). Microbial Transformations of Inorganic Nitrogen. Progress in Water Technology, 8: 3-29.
Palatsi, J., Vinas, M., Guivernau, M., Fernandez, B. and F. Flotats (2011). Anaerobic digestion of slaughterhouse waste: Main process limitations and microbial community interactions. Bioresource Technology, 102: 2219-2227.
Rajagopol, P., Rousseau, Bernet, N. and F. Béline (2011). Combined anaerobic and activated sludge anoxic/oxic treatment for piggery wastewater. Bioresourse Technology,102: 2185-2192.
Roy, D., Hassan, K. and R. Boopathy (2010). Effect of carbon to nitrogen (C:N) ratio on nitrogen removal from shrimp production waste water using sequencing batch reactor. Journal of Industrial Microbiology and Biotechnology,37: 1105-1110.
Wang, Xiao, Zhi, F.Q., Zhi, Xu, Yan, G.H. and Z.S. Tong (2009). Study on Treatment of Slaughterhouse Wastewater with Co-coagulation Flotation and SBR Process. Xiaoweiwang127@163.com.
Wang, F., Liu, Yi, Wang, J., Zhang, Y. and H. Yang (2012). Influence of growth manner on nitrifying bacterial communities and nitrification kinetics in three lab- scale bioreactors. Journal of Industrial Microbiology and Biotechnology, 39: 595-604.