AWWA WQTC62477

This slide presentation outlines information on the evolution of disinfection design practices. Topics covered include: the problem of disinfection byproducts and recalcitrant pathogens; realization of issue of hydraulic imperfections (t₁₀ does not cut it) and balancing objectives (DBPs); maximum segregation paradigm; idealized batch disinfection curves; histogram of differences (all Organisms); rational vs "ct" method (Giardia, free chlorine); problems with 3rd generation methods; vision for Generation 4.0; missing pieces; ozone kinetics considering water quality; pilot chlorine contactor; and, residual prediction.