Dissolved air flotation: progress and prospects for drinking water treatment

Research Article| December 01 2008 Dissolved air flotation: progress and prospects for drinking water treatment Johannes Haarhoff Johannes Haarhoff 1Department of Civil Engineering Science, University of Johannesburg, Kingsway Campus, PO Box 524, Auckland Park, 2006, South Africa Tel.: +2711 559 2148 Fax: +2711 559 2395; E-mail: jhaarhoff@uj.ac.za Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2008) 57 (8): 555–567. https://doi.org/10.2166/aqua.2008.046b Article history Received: June 06 2008 Accepted: July 30 2008 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share MailTo Twitter LinkedIn 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 Johannes Haarhoff; Dissolved air flotation: progress and prospects for drinking water treatment. Journal of Water Supply: Research and Technology-Aqua 1 December 2008; 57 (8): 555–567. doi: https://doi.org/10.2166/aqua.2008.046b Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The development of dissolved air flotation (DAF) for drinking water treatment has come a long way. After its pioneering application to water treatment in the 1920s, it was seemingly forgotten until renewed interest in the 1960s in Sweden, Finland, southern Africa and the United Kingdom brought it to attention once more. These advances converged at the first DAF conference in 1976 to unify the international DAF agenda. Subsequent meetings in 1991 (Antwerp), 1994 (Orlando), 1997 (London) and 2000 (Helsinki) provided important milestones for benchmarking the evolution and acceptance of DAF as a viable drinking water treatment process. The versatility of the process spawned a wide range of innovations to increase its efficiency, to optimise its energy use, to reduce its footprint and capital cost, to integrate it with filtration, sedimentation and ozonation, and more recently to use it in conjunction with membrane treatment. Although DAF innovation continues unabated, for example to improve hydraulic flow patterns and to produce bubble suspensions with more precise size and charge distribution, the process has now clearly crossed the chasm between the experimental (the "early adopters" phase) and maturity (the "early majority" phase). bubble production, dissolved air flotation, loading rate, technology development This content is only available as a PDF.