Interaction between denitrification and phosphorus removal in a nutrient removing SBR system
Abstract:Batch experiments were performed to investigate simultaneous denitrification and phosphorus removal by denitrifying phosphorus accumulating organisms (DNPAO). The results show that while using the same amount of carbon source, DNPAO are able to uptake phosphorus by using nitrate as electron acceptor. It was observed that higher nitrate concentration required a longer anoxic period for denitrifying phosphate uptake. In addition, the effect of the presence of nitrate in substrate was studied. Phosphorus release occurred as long as substrate was present in the anaerobic phase regardless of nitrate concentration. As expected, nitrate hindered the release of phosphorus in the anaerobic stage due to denitrifiers competing with PAO for their carbon source. The DNPAO however, remained competitive in a nitrate-enriched system in the anaerobic phase.
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 These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Ingenta Connect is not responsible for the content or availability of external websites