AWWA MTC69770

This powerpoint presentation begins by providing a brief overview of wastewater reuse. Fouling in ultrafiltration (UF)/microfiltration (MF) is presented, along with effluent organic matter (EfOM) - removal and fouling; dealing with EfOM - generic measurements, fractionation schemes, diagnosing problems; coagulation to remove EfOM and reduce fouling; and, applications - from the lab bench to real systems. Presentation conclusions indicate the following: we can improve UF treatment of EfOM (and other wastewater materials) by understanding speciation effects and using pretreatment, we're now looking at MIEX; autopsies for failed membranes may result in incorrect conclusions (HPO/HPI acids cause fouling, HPO/HPI base/neutrals stay on top of membrane); coagulation works, even with removal of a portion of HPO acids; EfOM and SMP result in similar fouling; and, big changes in fouling due to alginate, AHA, and SRNOM due to Ca+2. Includes figures.