Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju, 220-710, South Korea; Trojan Technologies, 3020 Gore Rd., London, Ontario N5V 4T7, Canada; Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada.
Department of Environmental Engineering (YIEST), Yonsei University, 234 Maeji, Heungup, Wonju, 220-710, South Korea.
Water Res. 2017 Oct 1;122:172-182. doi: 10.1016/j.watres.2017.05.062. Epub 2017 May 31.
Ozonation is an effective treatment for removing various organic pollutants from aquatic systems. The R concept, which is defined as the ratio of OH exposure to O exposure, has been widely used to predict the removal efficiency of target compounds, but it has significant variations by water temperature and initial O dose which are crucial parameters in drinking water plant. The R concept, which is defined as the OH exposure by O consumption, was proposed as a kinetic parameter for characterization and kinetic modeling for ozonation. The R concept is independent of temperature and initial O dose. A higher R value indicates a higher OH formation when the same amount of O is consumed in different water samples; therefore, the OH yield from O decomposition of the water samples can be compared using the R values. The R concept can also be used to characterize and model the initial ozone demand phase, and it is more convenient method compared to Rct concept. Using the R concept, the dynamic O and OH kinetics and the removal efficiencies of iopromide and ibuprofen were well predicted (R = 0.98) over a wide range of experimental conditions (n = 124).
臭氧氧化是一种有效去除水系统中各种有机污染物的方法。R 概念（定义为 OH 暴露与 O 暴露的比值）已被广泛用于预测目标化合物的去除效率，但它在水温、初始 O 剂量等关键参数方面存在显著差异，而这些参数是饮用水厂中的重要参数。R 概念（定义为 O 消耗的 OH 暴露）被提出作为臭氧氧化的特征化和动力学建模的动力学参数。R 概念独立于温度和初始 O 剂量。在不同水样中消耗相同量的 O 时，较高的 R 值表示形成更多的 OH；因此，可以使用 R 值比较水样中 O 分解产生的 OH 产量。R 概念还可用于描述和模拟初始臭氧需求阶段，与 Rct 概念相比，它是一种更方便的方法。使用 R 概念，可以很好地预测碘普罗胺和布洛芬的动态 O 和 OH 动力学以及去除效率（R=0.98），涵盖了广泛的实验条件（n=124）。
