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Use of a Batch Reactor to Calculate Ammonia Removal Rates to Verify an Activated Sludge Model Calibration

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There is a need to provide easy and quick methods of calibration verification of an activated sludge model to simulate existing and/or proposed activated sludge processes for design projects. Unfortunately, most engineers are unable to measure the biological kinetic rates because of the time and equipment required to perform the experiments. The use of a simulation model for design without measured or verified kinetic rates such as maximum ammonia oxidizing biomass specific growth rate can lead to over or under sizing of the biological reactors. This paper discusses the use of a bench top batch reactor to measure ammonia removal rates to verify an activated sludge model calibration. Measured ammonia removal rates from two separate WWTPs (Fairfield WPCF and Abington WWTP) and how they relate to activated sludge model defaults are presented. Advantages and disadvantages of the method used are also discussed.

Keywords: AOB specific growth rate; Bench-scale testing; ISE probes; activated sludge model

Document Type: Research Article


Publication date: 2009-01-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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