Modeling the formation of disinfection byproducts in chlorinated swimming pool water: Role of body fluid analog

Abstract The recirculation of pool water and the continuous input pollutants disinfectants in swimming pools intensifies accumulation disinfection byproducts (DBPs), which have received increasing attention. Trihalomethanes (THMs) are most common DBPs found water. Developing a predictive THM model is an efficient promising way to optimize chlorine dosage guarantee safety. Because main components swimmer inputs their respective quantities been formalized determined through body fluid analogs (BFA), development can rely on chlorination BFA mixtures. In this study, well-established second-order reaction decay with variable rate coefficient was expanded describe consumption formation first developed based identical assumption model, that is, reactivity reactants decreases as progresses. results showed uric acid exhibited fastest initial for decay. Although citric considerably high specific potential (μmol-THM, species/mg productive consumption), urea humic (HA) were attributed fast-reacting precursors. coefficients HA higher than acid. For mixture, (overall) formulated function individual substance concentration remaining This concept tested using HA. accurately described concentrations (R2 > 0.96).