The objective of this study was to examine the potential of two preoxidation technologies (permanganate vs ferrate) for removing nitrogenous disinfection byproduct (N-DBP) precursors while minimizing carbonaceous DBP (C-DBP) precursors in drinking water source waters. Formation potential (FP) tests were conducted for regulated trihalomethanes (THMs), haloacetic acids (HAAs), and selected N-DBPs (haloacetonitriles [HANs]), halonitromethanes [HNMs] and haloactamides [HAcAms]) before and after the preoxidation treatment. Ferrate can remove effectively the precursors of HANs, HNMs and HAcAms, which were higher than that pretreated by permanganate oxidation. But permanganate was better at removing THMs and HAAs than ferrate. The combination preoxidation of permanganate and ferrate is a promising technology in both controlling C-DBPs and N-DBPs.

Control of C-DBPs and N-DBPs with preoxidation

248th National Meeting (2014)

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