Relating Performance And Bacterial Population Dynamics During The Startup Of A Full-Scale Enhanced Biological Phosphorus Removal Process
Abstract:This study examines changes in the bacterial community and the performance of an anaerobic/aerobic Enhanced Biological Phosphorus Removal process during startup. Polyphosphate accumulating organisms (PAOs) increased to over 30% of the bacterial community within two weeks of startup. However, EBPR activity, indicated by phosphorus uptake and release rates, only began to increase after three weeks. The plant reliably met effluent total phosphorus requirements of 1 mg/L within 50 days. The abundance of Candidatus Accumulibacter phosphatis was relatively stable at approximately 10% through the startup, and it was observed with polyphosphate inclusions. Organisms from the genera Arthrobacter, Microlunatus, Nostocoida, and Tetrasphaera never accounted for greater than 1% of the bacterial community. Terminal Restriction Fragment Length Polymorphism revealed no single dominant species. Three novel candidate PAOs belonging to the Flavobacteria, TM7, and γ-Proteobacteria were identified based on correlations between their abundance and the observed performance dynamics.
Document Type: Research Article
Publication date: 2008-01-01
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 These proceedings are not peer reviewed.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