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Water Science & Technology Vol 66 No 3 pp 627–634 © IWA Publishing 2012 doi:10.2166/wst.2012.187 Towards more accurate design and specification of aeration systems using on-site column testingDiego Rosso, Lu-Man Jiang, David M. Hayden, Paul Pitt, Charles S. Hocking, Sudhir Murthy and Michael K. StenstromDepartment of Civil and Environmental Engineering, University of California, Irvine, CA 92697-2175, USA E-mail: bidui@uci.eduIrvine Ranch Water District, 3512 Michelson Drive, Irvine, CA 92612-1799, USA Hazen and Sawyer, P.C., 498 7th Avenue, New York, NY 10018, USA DC Water, 5000 Overlook Avenue, SW, Washington, DC, 20032, USA Department of Civil and Environmental Engineering, University of California, Los Angeles, CA 90095-1593, USA ABSTRACT Fine-pore diffuser systems are selected for their potential energy efficiency, and during design their propensity for fouling and for an increase in pressure drop with time must be considered. Both fouling and pressure-drop increase cause an increase in blower power requirements. This paper presents a new approach to improve this design procedure, without altering the technical structure of the classical approach. While the administrative and bidding milestones are being carried out (i.e., in the first 6 months of the project milestones), an independent aeration team can test candidate diffusers suitable for design in an aeration column Keywords: activated sludge; aeration; design; energy footprint; fouling; oxygen transfer efficiency 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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