Biological Nutrient Removal by Denitrifying Phosphorus Accumulating Organisms in a Continuous Flow, One-Biomass System
A Lab scale continuous flow system with Anaerobic/Anoxic/Aerobic configuration was set up to study the effect of oxygen in the internal recycle stream on the performance of denitrifying phosphorus accumulating organisms (DPAOs). It was found that by using a degas device the dissolved oxygen (DO) in the nitrate recycle stream was effectively decreased from 0.1±0.02 to 0.01±0.01 mg/L. This provided DPAOs favourable conditions to grow under anoxic condition, and thus successfully sustained in the system. When the degas device was removed from the system, the DO concentration in the anoxic reactor increased. The proliferation of DGAO population and deterioration of DPAOs performance was observed. The increased population of DGAO/GAO, which competed for the carbon source with PAOs, resulted in a poor performance of EBPR.
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: 2010-01-01
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 These proceedings are not peer reviewed.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