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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received May 29, 2000
Accepted January 17, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Effects of Hourly Load Variation on Treatment Characteristics in Anaerobic-Aerobic Activated Sludge Process

Min-Gyu Lee^† Tadashi Hano¹

Division of Chemical Engineering, Pukyong National University, Pusan 608-737, Korea ¹Department of Applied Chemistry, Oita University, Oita 870-11, Japan

mglee@pknu.ac.kr

Korean Journal of Chemical Engineering, March 2001, 18(2), 178-183(6), 10.1007/BF02698456

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Abstract

The effect of hourly load change on the treatment characteristics in an anaerobic-aerobic activated sludge process was compared for two types of variation. When the variation of wastewater concentration or flow rate was applied to the treatment unit according to normal distribution function like effluent pattern in actual life, the treatment system gave relatively stable and successful removal of nitrogen and phosphorus compounds. When the mass flow rate of nitrogen applied to the treatment unit was equal, the performance of the present process was almost same regardless of load variation mode. The simulation of treatment behavior was carried out successfully by using the kinetic equations for sludge floc and the reactor models which considered the treatment unit as a completely mixed tank.

Keywords

Anaerobic-Aerobic Operation Gray Water Activated Sludge Process Nitrogen Removal Phosphorus Remov-al Load Variation

References

Argaman Y, J. Water Pollut. Control Fed., 58, 853 (1986)
Barnard JL, J. Water Pollut. Control Fed., 72, 705 (1973)
Barth EF, Stensel HD, J. Water Pollut. Control Fed., 53, 1691 (1981)
Brodisch KEU, Water Sci. Technol., 17(11-12), 89 (1985)
Dahab MF, Lee YW, J. Water Pollut. Control Fed., 60, 1670 (1988)
Deinema MH, Van Loodsdrecht M, Scholten A, Water Sci. Technol., 17(11-12), 119 (1985)
Fush GW, Chen M, Microb. Ecol., 2, 119 (1975)
Hano T, Matsumoto M, Kuribayashi K, "Kinetics of Nitrogen and BOD Removal in Biofilm Processes," Biochemical Engineering for 2001, Springer-Verlag, 819 (1992)
Hano T, Matsumoto M, Kuribayashi K, Hatate Y, Chem. Eng. Sci., 47(13-14), 3737 (1992)
Hashimoto S, "New Activated Sludge Processes," Gihoudou Pub. (1989)
Lee JH, Nam HU, Park TJ, Korean J. Chem. Eng., 16(3), 303 (1999)
Lee KH, Lee JH, Park TJ, Korean J. Chem. Eng., 15(1), 9 (1998)
Lee MG, Suh KH, Hano T, Environ. Sci., 1(1), 11 (1997)
Nicholls A, Osborne DW, J. Water Pollut. Control Fed., 51, 557 (1979)
Rittmann BE, Langeland WE, J. Water Pollut. Control Fed., 57, 300 (1985)
Tabak HH, Quave SA, Mashni CI, Barth EF, J. Water Pollut. Control Fed., 53(10), 1503 (1981)
Tom NFY, Wong YS, Leung G, Water Sci. Technol., 26, 1047 (1992)
Buchan L, Water Sci. Technol., 15, 87 (1983)