Anaerobic Degradability: Effect of Particulate COD
Publication: Journal of Environmental Engineering
Volume 132, Issue 4
Abstract
Batch bioassay tests were conducted to evaluate the effect of particulate chemical oxygen demand (COD) on anaerobic digestion of wastewater at different ratio of food to microorganism . Synthetically prepared soluble and complex wastewaters were used. Experiments were conducted in seven sets of serum bottles maintained at ranging from 0.18 to 2.0. Each set contained six bottles having a total COD of 500 mg and from 0 to 100%. Methane generation conforms to the first order rate kinetics. At all , decreased linearly with increase in fraction of . Biomethane potential (BMP), and substrate and sludge activities also exhibited declining trend with increasing . The optimum value of ranged from 0.57 to 0.68. The two variables, and , were compounded to yield the ratio of to microorganisms [ , measured as volatile suspended solids (VSS)]. On increasing the from 0 to 0.9, the rate constant for methane generation is reduced by 81%. , percent sludge activity, and substrate utilization rate are lowered by 52–55%. These correlations could serve as useful guidelines to quantitatively assess the impact of particulate COD on biodegradability parameters.
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References
Barajas, M. G., Escalas, A., and Mujeriego, R. (2002). “Fermentation of a low VFA wastewater in an activated primary tank.” Water SA, 28(1), 89–98.
Cho, J. K., Park, S. C., and Chang, H. N. (1995). “Biochemical methane potential and solid state anaerobic digestion of Korean food wastes.” Bioresour. Technol., 52, 245–253.
Chynoweth, D. P. (2003). “Biochemical methane potential determination.” ⟨www.agen.ufl.edu/~chyn/download/bod_bmp⟩ (July 20, 2003).
Chynoweth, D. P., Haley, P., Owens, J., Teixeira, A., Welt, B., Rich, E., Townsend, T., and Choi, H. (2001). “Anaerobic digestion for reduction and stabilization of organic solid wastes during space missions: Laboratory studies.” ⟨ http://www.agen.uf/edu/~chyn/download/Publications_DC/Refereed/icesadlabdcrev1.pdf⟩ (July 20, 2003).
Draaijer, H., Maas, J. A. W., Schaapman, J. E., and Khan, A. (1992). “Performance of the 5 MLD UASB reactor for sewage treatment at Kanpur, India.” Water Sci. Technol., 25(7), 123–133.
Eastman, J. A., and Ferguson, J. F. (1981). “Solubilization of particulate organic carbon during the acid phase of anaerobic digestion.” J. Water Pollut. Control Fed., 53(3), 352–365.
Elmitwalli, T. A., Soellner, J., Keizer, A. D., Bruning, H., Zeeman, G., and Lettinga, G. (2001). “Biodegradability and change of physical characteristics of particles during anaerobic digestion of domestic sewage.” Water Res., 35(5), 1311–1317.
Goyal, N. K. (2003). “Tracing pollutional parameters through a UASB plant.” MS Technology dissertation, Indian Institute of Technology Roorkee, Roorkee, India.
Grady, C. P. L. (1985). “Biodegradation: Its measurement and microbiological basis.” Biotechnol. Bioeng., 27, 660–674.
Ligero, P., Vega, A., and Soto, M. (2001). “Pretreatment of urban wastewaters in a hydrolytic upflow digester.” Water SA, 27(3), 1–6.
Lin, J. G., Ma, Y. S., Chao, A. C., and Huang, C. L. (1999). “BMP test on chemically pretreated sludge.” Bioresour. Technol., 68, 187–192.
Mahmoud, N., Zeeman, G., Gijzen, H., and Lettinga, G. (2003). “Solids removal in upflow anaerobic reactors, a review.” Bioresour. Technol., 90, 1–9.
Owen, W. F., Stuckey, D. C., Healy, J. B., Jr., Young, L. Y., and McCarty, P. L. (1979). “Bioassay for monitoring biochemical methane potential and anaerobic toxicity.” Water Res., 13, 485–492.
Prashanth, S. (2003). “Treatment of sewage using UASB process.” Ph.D. thesis, Indian Institute of Technology Roorkee, Roorkee, India.
Sayed, S. K. I., Van Campen, L., and Lettinga, G. (1987). “Anaerobic treatment of slaughterhouse waste using a granular sludge UASB reactor.” Biol. Wastes, 21(1), 11–28.
Seghezzo, L., Zeeman, G., Lier, J., Van Hamelers, B., and Lettinga, G. (1998). “A review: The anaerobic treatment of sewage in UASB and EGSB reactors.” Bioresour. Technol., 65, 175–190.
Van Haandel, A. C., and Lettinga, G. (1994). Anaerobic sewage treatment. A practical guide for regions with a hot climate, Wiley, Chichester, U.K.
Zeeman, G., and Lettinga, G. (1999). “The role of anaerobic digestion of domestic sewage in closing the water and nutrient cycle at community level.” Water Sci. Technol., 39(5), 187–194.
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© 2006 ASCE.
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Received: Feb 11, 2005
Accepted: Apr 19, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
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