Design and Operation Optimization to Minimize the Production of Nitrous Oxide in Nitrification-Denitrification Activated Sludge Systems
Abstract:Fundamental process simulation and empirical analysis methods are combined to optimize denitrification system design and operational controls to minimize emissions of nitrous oxide (N2O), an important greenhouse gas. These N2O emissions can be highly variable, particularly under the dynamic loading conditions found at many municipal and industrial facilities. ASMN is a fundamental model which incorporates nitric oxide (NO) and N2O as denitrification intermediate products and is able to reproduce laboratory and field measurements that link N2O emissions to specific process conditions including COD/N ratios.
Full factorial design-of-experiment (DOE) simulations were used to evaluate a specific MLE process configuration and influent dataset. Under the conditions evaluated, the substrate half saturation coefficient for N2O reduction to nitrogen gas is the most important parameter. The internal recirculation rate (IRC) is the most important process variable contributing to N2O emissions.
Document Type: Research Article
Publication date: 2009-01-01
More about this publication?
- 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 These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites