April 16th, 2019 at 8:00 am - 5:00 pm

Florida Water Resources Conference

Tampa, FL


Heavy Hitters: Where DBPs Were Knocked Down in Two Ozone/BAF Pilot Trains

In April of 2018, Nashville, Tennessee’s Metro Water Services began a one-year pilot analyzing pre- and post-ozonation processes, along with advanced oxidation processes AOPs. One of the major goals of the pilot focused on evaluating options to reduce disinfection by-products DBPs – those that are currently regulated and are contemplated for future regulation. MWS recognized that, in the event of post ozone implementation, a need may exist for biological stabilization of the water prior to entry into the distribution system. Therefore, an anthracite media column, operated in parallel with a granular activated carbon GAC media column, allowed the development of biological activity in the absence of pre-chlorination. During this presentation, Rebecca will walk participants through the pilot study, sharing results and lessons learned.


Where’s the Beef? Biofiltration Monitoring and Optimization in Low-TOC Waters

Many tools exist to monitor the biological activity and performance of biologically active filters in water treatment. However, few provide the sensitivity to precisely quantify biological differences in low-TOC waters and optimize the system. The year-long monitoring and optimization effort to effectively integrate ozonation into the treatment train at the Metro Nashville Water Services 90-mgd K.R. Harrington WTP will provide the foundation to discuss BAF monitoring and optimization in low-TOC waters. During this presentation Rebecca will discuss the study, demonstrating the critical tools, in a limited toolbox, necessary for evaluating, optimizing, and understanding biological filtration in low-TOC waters.


More information and a full conference schedule can be accessed online here.