KEY PARAMETERS FOR CONTROL OF DEMON DEAMMONIFICATION PROCESS
Abstract:A suspended growth deammonification process has been in operation for over two years in Austria. Three US utilities have embarked on piloting this process at two locations: New York City and Alexandria, Virginia. Deammonification is a two-part autotrophic reaction involving two distinct biomass populations. In the first step aerobic ammonia oxidizing bacteria (AOB) nitrify partially to produce near equimolar concentrations of nitrite and ammonia. In the second step Anaerobic Ammonia Oxidizing Microorganisms (anammox) autotrophically denitrify these products to nitrogen gas. Alkalinity limitations and ammonia inhibition are used to control the production of near equimolar nitrite and ammonia, while limiting nitrite toxicity is key to facilitating autotrophic denitrification (anammox process). The paper describes the parameters that are important to control single-sludge suspended growth deammonification and how the DEMON process uses pH to control the two key reactions, at the same time controlling residual nitrite levels to prevent nitrite toxicity.
Document Type: Research Article
Publication date: 2007-01-01
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 These proceedings are not peer reviewed.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