EFFECTS OF AERATION CYCLES ON POPULATIONS OF NITRIFYING BACTERIA AND NITROGEN REMOVAL IN INTERMITTENTLY-AERATED REACTORS
Biological nutrient removal relies on different groups of nitrifying bacteria, which convert ammonia to nitrate or nitrite, and denitrifying bacteria, which convert nitrite or nitrate to nitrogen gas. The key to efficient, robust biological nitrogen removal processes relies on knowing the microorganisms involved and how they respond to different operating conditions. Intermittently aerated reactors can provide appropriate environmental conditions to support growth of microorganisms performing nitrification and denitrification. Previous research has shown that high nitrogen removal efficiencies can be achieved in these reactors (Cheng and Liu, 2001), with the added benefits of lower aeration costs and lower alkalinity and space requirements. In the present study, we assessed the effect of aeration cycles on the performance and the populations of nitrifying bacteria in intermittently aerated reactors treating swine wastewater. Specifically, we investigated how long non-aeration periods can be without negatively affecting ammonia removal, and how aeration-cycle affects nitrifying bacterial populations.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2004-01-01
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 These proceedings are not peer reviewed.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