[Case Study] NORTHGLENN, CO Active Mixing in Distribution System Helps Colorado Utility Lower THM Levels While Reducing Chlorine Used for Secondary Disinfection
Tags:Water Quality, Case Study, Colorado, Mountain, Mixing, PAX Mixer
In early 2018, operators attended a local educational seminar entitled Tools for Distribution System Water Quality to learn about a new suite of technologies for mixing storage tanks. Fundamentally, properly sized tank mixers can “de-stratify” water storage tanks, completely mixing tanks to create consistent disinfectant residual throughout. The submersible active mixers from PAX Water Technologies are powerful enough to fully turn over the multi-million gallon water tanks several times each day. Moreover, they provide a platform for supplemental technologies that can be added to remotely monitor and dose residual, as well as to volatilize disinfectant byproducts such as trihalomethanes (THMs). Together, these technologies allow operators to target individual water storage tanks to regulate residual levels while reducing THM levels across pressure zones.