The practical application of computational fluid dynamics to dissolved air flotation, water treatment plant operation, design and development

Abstract

Research Article| February 01 2009 The practical application of computational fluid dynamics to dissolved air flotation, water treatment plant operation, design and development Tony Amato; Tony Amato 1Enpure Ltd, Enpure House, Woodgate Business Park, Kettleswood Drive, Birmingham, B323DB, UK E-mail: tamato@enpure.co.uk E-mail: tamato@enpure.co.uk Search for other works by this author on: This Site PubMed Google Scholar Jim Wicks Jim Wicks 2The Fluid Group, Magdalen Centre, The Oxford Science Park, Oxford, OX44GA, UK E-mail: jim.wicks@thefluidgroup.com Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2009) 58 (1): 65–73. https://doi.org/10.2166/aqua.2009.003 Article history Received: January 21 2008 Accepted: April 10 2008 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Tony Amato, Jim Wicks; The practical application of computational fluid dynamics to dissolved air flotation, water treatment plant operation, design and development. Journal of Water Supply: Research and Technology-Aqua 1 February 2009; 58 (1): 65–73. doi: https://doi.org/10.2166/aqua.2009.003 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Computational fluid dynamics (CFD) can be applied to the advancement of dissolved air flotation (DAF) plant design. The use of CFD in design and predictive analysis, in particular here with reference to the upgrading of an existing DAF plant from 30 to 60 Ml/d and associated diagnostics, while still developing, helped by the emergence of ever more powerful computational systems, can be regarded as an established tool providing beneficial and useful data, although on occasions care may be required in the interpretation of results. The initial CFD studies were undertaken using the existing and upgraded works flows and structures at both ‘low’ and ‘high’ temperatures, i.e. 2 and 20°C, while the modelling results are reported using graphical representations of ‘contours of flow velocity’ and ‘velocity vectors’. In addition the degree of short circuiting based on T10 together with other retention parameters T50 and T50/m are reported. Further modifications were also considered: how changes to the incline baffle and tank depth can impact on the predicted distribution, vorticity and in practice on the actual subnatant water quality measured in terms of turbidity. Finally applying CFD to DAF plant design is shown to be a beneficial tool for the designer. computational fluid dynamics, dissolved air flotation, water treatment This content is only available as a PDF. © IWA Publishing 2009 You do not currently have access to this content.