Suitability of Extended Aeration Plants for BNR Retrofits: A Case of Tripling Rated Capacity
Abstract:The conversion of an extended aeration plant to modified Ludzack-Ettinger (MLE) process coupled with the construction of a dedicated septage receiving facility required the tripling of the plant contaminant processing capacity. Conversion to the MLE process affected a 55% reduction in annual average SVIs to about 126 ml/g, 75% reduction in alum dosage (on a molar basis), and 23% reduction in electrical power consumption. Biological nitrogen removed increased from 27 tons N in 2006, comprising 34% of the influent total nitrogen to 136 tons N or 67% of the influent nitrogen in 2008. The MLE achieved more stable nitrification throughout the year than the former extended aeration plant.
Document Type: Research Article
Publication date: 2009-01-01
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 These proceedings are not peer reviewed.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