Chemical and Biological Engineering Department, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada.
Environ Sci Technol. 2010 Mar 15;44(6):2056-63. doi: 10.1021/es902391t.
Models simulating the performance of UV reactors enhance our understanding of the fundamental principles governing the operation of these units. When modeling the performance of UV reactors, governing equations for all related phenomena are derived and solved. This research presents a step-by-step methodology to setup and solve the governing equations determining the performance of UV reactors and to evaluate the results. A computational fluid dynamic (CFD) model was developed in order to simulate UV photoreactors in the Eulerian framework for chemical removal using a UV-based hydroxyl radical initiated oxidation process. Verifying the results of the integrated CFD model, a novel method was developed using a modified planar laser-induced fluorescence technique for measuring tracer concentration profiles inside the UV reactor. In addition, the components of the CFD model--hydrodynamics and radiation--were evaluated using experimental profile throughout the entire reactor. This verified procedure can be applied to the simulation and optimization of UV photoreactors with various geometries and operating conditions.
模拟 UV 反应器性能的模型增强了我们对这些单元运行的基本原理的理解。在对 UV 反应器的性能进行建模时，会推导出并求解所有相关现象的控制方程。本研究提出了一种逐步建立和求解确定 UV 反应器性能的控制方程并评估结果的方法。为了在使用基于 UV 的羟基自由基引发氧化过程进行化学去除的欧拉框架中模拟 UV 光反应器，开发了一种计算流体动力学 (CFD) 模型。为了验证综合 CFD 模型的结果，开发了一种使用改进的平面激光诱导荧光技术测量 UV 反应器内部示踪剂浓度分布的新方法。此外，使用整个反应器的实验剖面评估了 CFD 模型的组件——流体动力学和辐射。此验证过程可应用于各种几何形状和操作条件的 UV 光反应器的模拟和优化。
