AWWA WQTC71449

This powerpoint presentation begins by providing a brief overview of invasive mussels, specifically zebra and quagga mussels, impacts of invasive mussels to drinking water treatment, mussel control/treatment in the western U.S., and proactive vs. reactive control strategies. Competing treatment objectives are presented and include: infrastructure protection and maintaining flow; treatment method can impact down stream processes and finished water quality; and, breakthrough or interruptions in physical treatments for settlement prevention can result in downstream attachment and adult growth. Topics presented include: chlorine as the most frequently used control strategy; balance in invasive mussel control and disinfection byproduct (DBP) formation; Zequanox™; natural product chemistry; field pilot and demonstration trials; pilot biobox flow through trials; biobox trial results; and, domestic line treatment. Includes figures.