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Water Science & Technology Vol 52 No 10-11 pp 461–468 © IWA Publishing 2005 Nitrification parameter measurement for plant design: experience and experimental issues with new methodsR.M. Jones*, C.M. Bye** and P.L. Dold****EnviroSim Associates Ltd., 205-7 Innovation Drive, Flamborough, ON L9H 7H9, Canada, (E-mail: jones@envirosim.com; bye@envirosim.com; dold@envirosim.com) ABSTRACT Nitrification kinetics are important for process design, optimization, and capacity rating of activated sludge wastewater treatment plants. A Water Environment Research Foundation (WERF) project on Methods for Wastewater Characterization in Activated Sludge Modeling (WERF, 2003) focused significantly on the development of procedures for measuring the nitrifier maximum specific growth rate, μAUT. In addition, the importance of (and lack of data for) the nitrifier decay rate, bAUT, was identified. This paper describes three bench-scale methods for measuring μAUT: the Low F/M SBR, Washout and High F/M methods. During the WERF project, the importance of pH and temperature control was investigated briefly; this paper summarizes further experimental work performed to address these issues. A summary of μAUT measurements in a number of locations and using the different measurement techniques is provided. Keywords Nitrification; kinetics; modelling; simulation; process design eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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