AWWA ACE62949

The granular activated carbon (GAC) adsorption of methyl-isoborneol (MIB) and geosmin was evaluated using the rapid small-scale column test (RSSCT) and equilibrium isotherms. Increasing GAC age and influent total organic carbon (TOC) concentration negatively impacted the GAC adsorption capacity. Influent disinfection byproducts and residual chlorine were found to have no and little measurable impact, respectively. When normalized to bed volumes, the impact of empty bed contact time was only a concern at short times. When expressed as fractional or normalized effluent concentration, the impact of different influent MIB concentrations was not found. Includes 2 references, tables, figures.