PREDICTING AND VERIFYING TOC REMOVAL BY PAC IN PILOT-SCALE UF SYSTEMS

A modeling technique was developed to predict organics removal by powd ered activated carbon (PAC) added as a pretreatment to hollow-fiber ul trafiltration (UF). Model predictions were successfully verified for l arge- and small-scale PAC-UP pilot plants. Experiments were conducted using different water sources, PAC dosages, and backwashing frequencie s. Natural organic matter in the water sources, represented by total o rganic carbon, was the target compound studied. The modeling procedure can be used in the design and evaluation of PAC-UP systems.