DENITRIFICATION FILTERS: A COMPARISON OF MANUFACTURERS AND REVIEW OF PERFORMANCE, PATENT AND BIDDING ISSUES
With the development of total maximum daily loads for nutrient discharges to address water quality concerns, many wastewater treatment plants are facing stringent nutrient limits. Deepbed denitrification filters are a well-proven technology for meeting low total nitrogen limits. Concurrent denitrification and solids removal in a deep-bed filter was first patented in 1973, and then followed by a series of patents for other components including the use of backwash water to release nitrogen gas. Dravo Corporation, and later Tetra Process Technologies/Severn Trent Services, pioneered the development of denitrification filter technology and continues to make advances. With the expiration of the original process patents, several other filter manufacturers are developing a denitrification option for their equipment. While Tetra's denitrification experience is unparalleled, there are times when an alternate must be considered, such as under strict competitive bidding laws or upgrading existing filters for denitrification. This paper will provide a literature review documenting technology development and process performance; review the current manufacturers, patented features and their relevance; and examine how bidding requirements have been met in several states.
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: 01 January 2004
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 These proceedings are not peer reviewed.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