Calcite-amended horizontal roughing filtration for clay turbidity removal

Abstract

Research Article| September 01 2002 Calcite-amended horizontal roughing filtration for clay turbidity removal Stephen J. Rooklidge; Stephen J. Rooklidge 1Department of civil, construction, and Environmental Engineering, Oregon State University, 202 Apperson Hall, Corvallis, OR 97331, USA Tel:(503)678-2681 Fax:(541)737-3052; E-mail: conserver@canby.com Search for other works by this author on: This Site PubMed Google Scholar Lloyd H. Ketchum Lloyd H. Ketchum 2Department of Civil Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556, USA Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2002) 51 (6): 333–342. https://doi.org/10.2166/aqua.2002.0030 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation Stephen J. Rooklidge, Lloyd H. Ketchum; Calcite-amended horizontal roughing filtration for clay turbidity removal. Journal of Water Supply: Research and Technology-Aqua 1 September 2002; 51 (6): 333–342. doi: https://doi.org/10.2166/aqua.2002.0030 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Crushed basaltic river rock, calcite limestone, and calcite-amended basalt were three types of media tested in pilot-scale horizontal roughing filters pretreating slow sand filters fed from the Santiam River over 60-day periods. Montmorillonite and kaolinite clay challenge tests were conducted on ripened and unripened roughing filters to test performance at turbidities greater than 150 NTU, and clay removal trends were qualitatively examined using clay peak area ratios derived from X-ray diffraction. Enhanced montmorillonite removal was evident in the calcite roughing filter, but schmutzdecke growth was inhibited in the calcite-fed slow sand filter. The basalt, calcite and calcite-amended roughing filters in combination with slow sand filtration achieved 88.0, 95.3 and 99.6% clay turbidity removal, respectively, during the challenge tests. The slow sand filter pretreated with a calcite-amended roughing filter was the only configuration to produce effluent that complied with the 1 NTU regulatory requirement using influent of <1 to 150 NTU. amendments, limestone, roughing filters, slow sand filters, turbidity This content is only available as a PDF. © IWA Publishing 2002 You do not currently have access to this content.