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KMID : 1024519950040050509
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Journal of the Environmental Sciences
1995 Volume.4 No. 5 p.509 ~ p.516
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Simultaneous N-P Removal of Wastewater with Flow Variation by Anaerobic-Aerobic Activated Sludge Process(I)
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Lee Min-Gyu
Suh Kuen-Hack
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Abstract
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The treatment performances of anaerobic-aerobic activated sludge process were investigated under various operation conditions. The treatment system proposed in this study gave a relatively stable performance against hourly change of the flow rate and showed a satisfactory removal of nitrogen and phosphorus compounds under experimental conditions. The recycle ratio of mixed liquor from aerobic to anaerobic region and peak coefficient primarily controlled the extent of nitrogen removal. The recycle ratio had the optimum values which were determined by the microbial activities of nitrification and denitrification. The behavior of the treatment unit could be simulated by using the kinetic equations and reactor models which considered the treatment units as complete mixing tanks.
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KEYWORD
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anaerobic-aerobic process, nitrogen removal, phosphorous removal, waste water, activate sludge process
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