AWWA WQTC69302

Greater Cincinnati Water Works (GCWW) is currently designing an ultraviolet (UV) disinfection system for theRichard Miller Treatment Plant to enhance public health protection. As part of this process, GCWWis evaluating the intermittent application of an advanced oxidation process (AOP) using UVlight and hydrogen peroxide for treating seasonal taste and odor (T&O) events and the continuous application ofAOP for treating micro-pollutants. The performance and costs of UV/peroxide were evaluatedusing a UV simulation tool that predicted day-to-day UV system operation accounting forseasonal trends in water quality and target compound concentrations and the dose monitoringand control strategy used by the UV system. The simulated UV system used medium pressureUV lamps. Contaminant reductions were predicted using a UV dose-based kinetic model thataccounted for the reaction of hydroxyl radicals with the target compounds and scavenger species.The kinetic model was based on a theoretical treatment of the advanced oxidation as reported inthe literature. The costs of advanced oxidation depended on the seasonal trending in flow, waterUVT and scavenger species (alkalinity and TOC) and the optimization of the applied UV andperoxide doses. The costs of intermittent advanced oxidation for seasonal taste and odor eventsare strongly dependent on the duration of those events and when they occur. Includes 6 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

18

File Size:

1 file , 1.2 MB