Occurrence of Nitrite in BNR Effluents and Implications for Meeting a Nitrite Standard
Abstract:Regulations for the discharge of wastewater effluent typically limit combined nitrate and nitrite concentrations without specific limits for nitrite alone. However, regulations setting specific nitrite limits for receiving waters are emerging. The objective of this study was to understand how activated sludge and biological nutrient removal (BNR) wastewater plants could potentially be affected by nitrite regulations. Nitrite data compiled from 18 treatment plants showed that effluent nitrite concentrations were highly variable, causing the range of expected compliance to be broad for the hypothetical discharge standards evaluated (0.05 to 1.0 mg/L NO2-N). Steady state simulations using BioWin were performed to investigate the effects of different operational parameters on the nitrification performance of an activated sludge system. The modeling analysis showed the importance of aerobic solids retention time (SRT) as a key parameter for the design and operation of activated sludge systems required to meet low nitrite limits.
Document Type: Research Article
Publication date: January 1, 2010
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 These proceedings are not peer reviewed.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