AWWA ACE68881

This powerpoint presentation begins by providing a brief overview of Tacoma Water and a schematic of the Green River treatment operations. Major ozone drivers are presented, along with system components, ozone injecting and contacting, start-up issues and functional testing, side stream injection, solution of upstream off-gas, ozone equipment issues with gaskets, liquid oxygen pressure build, and gas flow control. Presentation observations include the following: start-up is a multiphase process; involvement and communication with operators is critical; and, people want to go home - must plan (and specify) accordingly. Includes figures.