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Design of SBR systems for nutrient removal from wastewaters subject to seasonal fluctuations
1Environmental Engineering Department, Istanbul Technical University, I.T.U. Inşaat Fakültesi, Maslak, Turkey.
Abstract:
Designing SBR systems for simultaneous biological nitrogen and phosphorus removal is evaluated and defined for wastewaters from small coastal areas subject to seasonal fluctuations in quantity and quality. A design procedure is developed using basic process stoichiometry and significant operating parameters. A stepwise approach was utilized to secure full nitrification, available nitrate limitation for denitrification, a mixed phase with enough anaerobic fraction for P removal. A fundamental relationship between the effective sludge age, the recycle ratio and the cycle time was developed and used for the determination of physical design parameters.
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