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Water Science and Technology Vol 32 No 7 pp 111–117 © IWA Publishing 1995 Upgrading of a small wastewater treatment plant: design and operation aspectsG. J. Hatziconstantinou*, C. M. Kalergis* and A. P. Grivas***National Technical University of Athens, Water Resources Division, 5 Iroon Polytechniou str. 157 73 Athens Greece ABSTRACT This paper presents the case of a small wastewater treatment plant taken out of service due to insufficient design and equipment installed. Design assumptions and decisions made for plant restoration based on treatment requirements are outlined and plant operation aspects regarding revealed wastewater characteristics, process efficiency, sludge settling behaviour and equipment control, are discussed. The importance of wastewater characterization as a necessary procedure prior to plant design and construction, is stressed and the feasibility of nutrient removal in small wastewater treatment plants under minimum supervision, is assessed. A simplified mathematical model, as a useful tool to operators, for plant performance evaluation and prediction, is presented. 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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