PROCESS OPTIMIZATION RESULTS IN COST EFFECTIVE BNR UPGRADE
Abstract:The Valrico Advanced Wastewater Treatment Plant (AWTP) is owned and operated by Hillsborough County, FL. The AWTP is rated for an Average Annual Daily Flow (AADF) of 4 mgd. The permit effluent limits are 5.0 ppm BOD5; 5.0 ppm TSS; 3.0 ppm TN; and 1.0 ppm TP. In order to accommodate the anticipated growth in the service area, the existing biological system was optimized to realize a 50 percent increase (4 to 6 mgd) in BNR capability without the addition of new aeration basin. Process optimization entailed (i) Implementation of tight DO control using on-line nutrient and DO analyzers to maximize simultaneous nitrification/denitrification, and (ii) Examination of the behavior of the clarification processes under various operating scenarios using the State Point approach. The opinion of probable cost and construction cost were 5 and 4.2 million, respectively. The upgraded facility was commissioned in June 2002, on schedule and under budget. Construction change orders were limited to less than 2 percent.
Document Type: Research Article
Publication date: 2003-01-01
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 These proceedings are not peer reviewed.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