Development of a Dynamic Model for WQBEL Calculation
Abstract:Steady state methods for calculating water quality based effluent limits (WQBELs) depend on selecting critical conditions of treatment plant effluent and receiving water flowrate and water quality. In the case of heavy metals and ammonia, the critical conditions for hardness, and pH and temperature, are also selected to calculate the respective criteria. Concurrently selecting the critical conditions for flow, concentration, and ambient conditions may lead to WQBELs overprotective of beneficial uses and at levels impossible to meet through available treatment technologies short of reverse osmosis. Dynamic modeling incorporates the observed receiving water and effluent characteristics to more accurately represent the effluent limitations required to provide the intended level of water quality protection. Where maximum recorded concentrations are extremely rare events or there is available dilution, the dynamic model derived effluent limitations may be considerably higher than the concurrent worst case condition steady state limits.
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 These proceedings are not peer reviewed.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