Conditioning and Dewatering of Anaerobically Digested BPR Sludge
Publication: Journal of Environmental Engineering
Volume 118, Issue 5
Abstract
Anaerobic digestion of sludge from a full‐scale biological phosphorus removal (BPR) treatment facility resulted in significant release of soluble phosphorus. However, the increase in phosphorus and/or change in microbial population associated with the BPR conversion had no significant impact on sludge dewatering characteristics. Cationic polymer requirements (Percol 757) for effective sludge conditioning were not significantly impacted by the conversion to BPR treatment. Inorganic chemical addition using both lime and ferric chloride promoted effective sludge conditioning while concurrently promoting the reduction in filtrate phosphorus concentration. Suggestions for implementing the experimental results in full‐scale sludge treatment systems are also presented.
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References
1.
Barnard, J. L. (1975). “Biological nutrient removal without the addition of chemicals.” Water Res., 9(6), 485–490.
2.
Daigger, G. T., Randall, C. W., Waltrip, G. D., Romm, E. D., and Morales, L. M. (1987). “Factors affecting biological phosphorus removal for the VPI process, a high‐rate University of Capetown Process.” Biological phosphate removal wastewaters, R. Ramadiori, ed., Pergamon Press, Oxford, England, 185–200.
3.
Deakyne, C. W., Patel, M. A., and Krichton, D. J. (1984). “Pilot plant demonstration of biological phosphorus removal.” J. Water Pollution Control Fed., 56, 867–873.
4.
Design manual: Dewatering municipal wastewater sludges; EPA/625/1‐87/014. (1987). Center for Environmental Research Information, Environmental Protection Agency, Cincinnati, Ohio.
5.
Kang, S. J., et al. (1985). “A year's low temperature operation in Michigan of the A/O system for nutrient removal.' Proc., Res. Symp., 58th Annual Water Pollution Control Federation Conf., WPCF, Kansas City, Mo.
6.
Knocke, W. R., Sen, D., Nash, J., and Randall, C. W. (1988). “Phosphorus control issues in the digestion and dewatering of biological phosphorus removal sludges.” Proc. 1988 Joint CSCE‐ASCE Nat. Conf. on Envir. Engrg., ASCE, New York, N.Y., 345–352.
7.
Marais, G. v. R., Loewenthal, R. E., and Siebritz, I. P. (1983). “Observations supporting phosphate removal by biological excess uptake—a review.” Water Sci. and Tech., 15, 15–41.
8.
Murakami, T., Koiki, N., Taniguchi, N., and Esumi, H (1987). “Influence of return flow phosphorus load on performance of the biological phosphorus removal process.” Proc. IAWPRC Specialized Conf., R. Ramador, ed., Permagon Press, London, England, 237–245.
9.
Pitman, A. R., Deacon, S. L., and Alexander, W. V. (1991). “The thickening and treatment of sewage sludges to minimize phosphorus release.” Water Res., 25(10), 1285–1294.
10.
Phosphorus removal design manual; EPA/625/1‐87/001. (1987). Center for Environmental Research Information, Environmental Protection Agency, Cincinnati, Ohio.
11.
Sen, D. (1987). “Phosphorus precipitation and struvate formation during the anaerobic digestion of waste biological sludges from a biological phosphorus removal (BPR) system,” MS thesis, Virginia Tech, Blacksburg, Va.
12.
Sen, D., Randall, C. W., Grizzard, T. J., and Knocke, W. R. (1991). “Impact of solids handling units on the performance of biological phosphorus and nitrogen removal systems.” Proc., Res. Symp. 64th Annual Water Pollution Control Federation Conf., WPCF, Toronto, Canada.
13.
Standard methods for the examination of water and wastewater. (1985). 16th Ed., APHA, AWWA, and WPCF, Washington, D.C.
14.
Vesilind, P. A. (1979). Treatment and disposal of wastewater sludges. Ann Arbor Science, Ann Arbor, Mich.
15.
“Virginia initiative pilot plant” (1985). Report, CH2M Hill Consulting Engineers, Lambert's Point, Norfolk Va.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 118 • Issue 5 • September 1992
Pages: 642 - 656
Copyright
Copyright © 1992 ASCE.
History
Published online: Sep 1, 1992
Published in print: Sep 1992
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