纽约市环境保护部（DEP）正在积极开展工作 实施紫外线（UV）消毒设施，作为该病的额外治疗屏障 该市的卡茨基尔和特拉华州供应。卡茨基尔和特拉华州的补给品在性质上是原始的，这 允许环境保护局继续与美国进行过滤避免决定 环境保护局（EPA）。在消耗的近20亿加仑饮用水中 在纽约市，每天近90%的电力来自卡茨基尔和特拉华系统。德普 致力于为卡茨基尔和特拉华州设计和建造紫外线消毒设施 根据与EPA的协议供应。 作为这一承诺的一部分，DEP开发了紫外线消毒设施的概念设计 已纳入标称容量为40 mgd的紫外线反应器。作为概念设计的一部分，DEP 开始了一个建模项目，以证明紫外线的综合模型 光强度分布（LID）和计算流体力学（CFD）可以有效地预测紫外线 反应堆性能。最初，对一个小型反应堆（lt20 mgd）进行建模，以确定是否可以预测 模拟结果与反应堆物理测试期间获得的生物剂量学数据一致。在期间 在初步设计中，将对其他小型反应堆进行建模，以证明不同类型的反应堆 可以有效地对尺寸和配置进行建模。然后可以使用这些模型来预测 未经生物剂量学验证的大型反应堆的性能。DEP使用建模作为验证手段的方法是，首先对 已经通过生物剂量学进行了物理验证。在证明计算机模型可以 预测（在规定的置信区间内）生物剂量学测试期间测量的结果，建模 该方法可用于大型反应堆设施的放大和设计。初步调查的结果 计算机建模表明，该方法是可行的。 包括10个参考文献、表格和图表。

New York City Department of Environmental Protection (DEP) is actively planning for the implementation of an ultraviolet light (UV) disinfection facility as an additional treatment barrier for the City's Catskill and Delaware supplies. The Catskill and Delaware supplies are pristine in nature, which has allowed the DEP to continue a Filtration Avoidance Determination with the United States Environmental Protection Agency (EPA). Of the nearly 2 billion gallons of drinking water consumed daily in New York City, nearly 90 percent is supplied from the Catskill and Delaware system. DEP has committed to the design and construction of a UV disinfection facility for the Catskill and Delaware supplies under the agreement with EPA. As part of this commitment, DEP has developed a Conceptual Design of the UV disinfection facility that has incorporated UV reactors with nominal capacities of 40-mgd. As part of the Conceptual Design, DEP began a modeling program to demonstrate that integrated models of UV light intensity distribution (LID) and computational fluid dynamics (CFD) can effectively predict UV reactor performance. Initially, a small-scale reactor (<20 mgd) was modeled to determine if predicted modeling results agree with biodosimetry data obtained during physical testing of the reactors. During Preliminary Design, additional small-scale reactors will be modeled to prove that reactors of different sizes and configurations can be effectively modeled. The models can then be used to predict the performance of larger reactors that have not been validated with biodosimetry. The DEP's approach to using modeling as a means for validation is to initially model UV reactors that have been physically validated using biodosimetry. After demonstrating that the computer models can predict (within a defined confidence interval) results measured during biodosimetry testing, the modeling approach can be used for scale up and design of a facility with larger reactors. The results of the initial computer modeling, as presented in this paper show that the approach is feasible. Includes 10 References, tables, figures.