Measurement of bubble bed depth in dissolved air flotation using a particle counter

Research Article| February 01 2009 Measurement of bubble bed depth in dissolved air flotation using a particle counter Mooyoung Han; Mooyoung Han 1Department of Civil and Environmental Engineering, Seoul National University, Seoul, 151-742, Korea E-mail: myhan@snu.ac.kr Search for other works by this author on: This Site PubMed Google Scholar Tschung-il Kim; Tschung-il Kim 1Department of Civil and Environmental Engineering, Seoul National University, Seoul, 151-742, Korea Search for other works by this author on: This Site PubMed Google Scholar Dongheui Kwak Dongheui Kwak 2Department of Environmental and Chemical Engineering, Seonam University, Namwon, 590-711, Korea Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2009) 58 (1): 57–63. https://doi.org/10.2166/aqua.2009.110 Article history Received: December 02 2007 Accepted: May 17 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 Mooyoung Han, Tschung-il Kim, Dongheui Kwak; Measurement of bubble bed depth in dissolved air flotation using a particle counter. Journal of Water Supply: Research and Technology-Aqua 1 February 2009; 58 (1): 57–63. doi: https://doi.org/10.2166/aqua.2009.110 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex In the development of dissolved air flotation (DAF) technology, it is noteworthy that higher hydraulic loading rates are achieved while the reactors become deeper resulting in a smaller footprint. One of the reasons for the increased efficiency is claimed to be the deeper bubble bed depth in the flotation separation zone; however, there has been limited research on the characterization of the bubble bed. In this research, a method for locating the bubble bed interface using a commercially available particle counter is presented. The results compared remarkably well with observations by the naked eye at a pilot plant with a transparent acrylic wall. The method is then applied to locate the bubble bed interface at an operating DAF plant in Wonju, Korea. We can observe that the bubble bed profile changes according to the operational conditions and that higher effluent water quality is obtained with a deeper bubble bed. Based on these results, optimization of DAF process might be possible by monitoring the bubble bed profile in the reactor. air bubbles, bubble bed depth, bubble bed interface, dissolved air flotation, particle counter This content is only available as a PDF.