Sludge Digestion by Anaerobic Fluidized Beds. I: Lab Performance Data
Publication: Journal of Environmental Engineering
Volume 115, Issue 6
Abstract
This study was undertaken to evaluate the laboratory performance of the anaerobic fluidized bed digesting secondary biological sludge at 35 °C with four hydraulic‐retention times (HRTs): 1, 2.5, 5, and 10 days. In addition, the effects of both operating temperature (15 °C, 25 °C and 35 °C) and the initial sludge solubilization on the digester performance were also examined. It was found that at 35 °C, an adequate degree of sludge digestion was obtainable with an HRT of only 1–2 days if the influent biological sludge was presolubilized by treatment with 17.5 meq/L of sodium hydroxide. If no presolubilization was used, the necessary HRT was increased to 10 days. When the temperature was decreased to 25 °C and the sludge was presolubilized, the required HRT was 2.5–3 days. However, as the temperature was further decreased to 15 °C, the system was unable to achieve adequate digestion in as long as 10 days, even with presolubilization. It was also observed that the fluidized‐bed system was able to accept abrupt increases of loading without a corresponding buildup of excessive organic acids.
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References
1.
Benjamin, M. M., Ferguson, J. F., and Buggins, M. E. (1981). “Treatment of sulfite evaporator condensate with an anaerobic reactor.” Proc., 1981 Envir. Engrg. Conf., TAPPI Press, Atlanta, Ga.
2.
Gossett, J. M., and Belser, R. L. (1982). “Anaerobic digestion of waste activated sludge.” J. Envir. Engrg. Div., ASCE, 108(6), 1101–1120.
3.
Hakulinen, R., Salkinoja‐Salonen, M. S., and Saxelin, M.‐L. (1981). “Purification of Kraft bleach effluent by an anaerobic fluidized bed reactor and aerobic trickling filter at semitechnical scale.” Proc. 1981 Envir. Conf., TAPPI Press, Atlanta, Ga., 197–203.
4.
Hall, E. R., and Jovanovic, M. (1983). “Anaerobic treatment of thermal sludge conditioning liquor with fixed‐film and suspended‐growth processes.” Proc. 36th Purdue Industrial Waste Conf., Purdue Univ., West Lafayette, Ind., Vol. 36, 719–728.
5.
Haug, R. T., et al. (1978). “Effect of thermal pretreatment on digestability and dewaterability of organic sludges.” J. Water Pollution Control Federation, 50(1), 73–85.
6.
Jewell, W. J., Switzenbaum, M. S., and Morris, J. W. (1981). “Municipal wastewater treatment with the anaerobic attached microbial film expanded bed process.” J. Water Pollution Control Federation, 53(4), 482–490.
7.
Lynam, B., McDonnell, G., and Krup, M. (1967). “Start‐up and operation of two new high rate digester systems.” J. Water Pollution Control Federation, 39(4), 518–535.
8.
Metcalf and Eddy, Inc. (1979). Wastewater engrg: Treatment, disposal, and reuse, 2nd Ed., McGraw‐Hill Book Co., Inc., New York, N.Y.
9.
Metcalf, L., and Eddy, H. P. (1916). American sewerage practice, vol. III, disposal of sewage. McGraw‐Hill Book Co., New York, N.Y., 12–15.
10.
Morris, J. W., and Jewell, W. J. (1982). “Organic particulate removal with the anaerobic attached‐film expanded‐bed process.” Proc., 36th Purdue Industrial Waste Conf., Purdue Univ., West Lafayette, Ind., Vol. 36, 621–630.
11.
O'Rourke, J. T. (1968). “Kinetics of anaerobic waste treatment at reduced temperatures,” thesis presented to Stanford University, at Stanford, Calif., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
12.
Sludge Treatment and Disposal. (1979). U.S. Environmental Protection Agency, Office of Technology Transfer, Cincinnati, Ohio, EPA 625/1‐79–011.
13.
Stuckey, D. C., and McCarty, P. L. (1978). “Thermochemical pretreatment of nitrogeneous materials to increase methane yield.” Biotechnology and Bioengineering Symp. No. 8, John Wiley and Sons, Inc., New York, N.Y., 219–233.
14.
Sutton, P. M., and Li, A. (1982). “Anitron and oxitron systems: High‐rate anaerobic and aerobic biological treatment systems for industry.” Proc. 36th Purdue Industrial Waste Conf., Purdue Univ., West Lafayette, Ind., Vol. 36, 665–677.
15.
Switzenbaum, M. S., and Jewell, W. J. (1978). “The anaerobic attached film expanded bed reactor for the treatment of dilute organic wastes,” U.S. Dept. of Energy Report No. TID‐29398, U.S. Dept. of Energy, Washington, D.C.
16.
Switzenbaum, M. S., and Jewell, W. J. (1980). “Anaerobic attached‐film expandedbed reactor treatment.” J. Water Pollution Control Federation, 52(7), 1953–1965.
17.
Vesilind, P. A. (1979). Treatment and disposal of wastewater sludges, rev. ed., Ann Arbor Science Publishers, Ann Arbor, Mich.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 115 • Issue 6 • December 1989
Pages: 1139 - 1155
Copyright
Copyright © 1989 ASCE.
History
Published online: Dec 1, 1989
Published in print: Dec 1989
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