Moving from good floc to optimized treatment means controlling for something floc removal alone cannot fix: the dissolved organic matter that becomes tomorrow's disinfection byproducts. At the Class B level, an operator is expected to do more than execute a dose — they are expected to select the right coagulant for a given raw water and season, use instrumentation to hold performance steady between jar tests, understand polymer chemistry well enough to dose it correctly, and calculate feed rates rather than guess at them. This guide covers the judgment calls and calculations that separate routine process control from real system optimization.
From Process Control to System Optimization
At this level, an operator's job shifts from following a set dose to choosing the right chemical strategy for changing conditions — balancing turbidity removal, organic matter (TOC) removal, slu