AwwaRF的目标是优化紫外线反应器 验证是为了改进现有的紫外反应器验证工具，从而优化系统 在保持公共卫生保护的同时调整尺寸（降低成本）。这一目标正在实现 通过3项主要举措。第一个是寻找更好的挑战微生物。 在这些测试中，最常用的生物体是MS-2大肠杆菌噬菌体（在 美国）和枯草芽孢杆菌孢子（欧洲）。 因为这些微生物 比许多水性病原体更耐紫外线，这是一个不确定因素，被称为 “红色偏差”是必需的（美国环保局，2003b）。使用红色偏差安全系数可能会导致液压设计良好的紫外线传感器尺寸过大 系统。这项工作的目标是鉴定和评估微生物替代物 灭活特性更好地匹配目标病原体，从而减少所需的 红色偏差值。第二项倡议涉及寻找更好的紫外线- 吸收化合物。在反应堆验证期间，在254 nm（UVT）的水条件下，低紫外线透射率是必要的 通过向给水中添加紫外线吸收化学品进行模拟。最常见的 使用的紫外线吸收化合物包括咖啡（NWRI/AwwaRF，2000）、荧光素（ÖNORM，2002） 木质素磺酸盐（DVGW，1997）。对于给定的UVT，咖啡的紫外线吸收光谱， 氟氰和木质素磺酸盐与水处理厂（WTP）有很大不同 水域。这种差异影响剂量传递和配备紫外线系统的监测 带有中压（MP）灯。这就需要使用不确定性因素来解释 测试和WTP之间的条件差异。这种安全系数被称为 “多色偏倚。” 该项目的第二个目标是确定和验证降低NOM的来源 验证过程中的UVT，以减少或（如果可能）消除多色偏差因素。第三项倡议涉及调查灯和套筒老化对剂量传递的影响。 MP灯紫外线输出的光谱位移（Phillips，1983）和 据报道，灯套（Kawar，1998年）老化。发生了非常显著的视觉变化 在饮用水试点研究（Mackey，2004）和许多废水处理中都观察到了这种现象 植物。灯输出和套筒紫外透射率的光谱偏移程度 用于饮用水应用的商用紫外线反应器尚不清楚。如果意义重大，就会有 需要限制传感器响应或使用适当的安全系数来解释这些问题 影响。因此，第三项任务涉及新的和新的紫外线输出的特性 老化（在水厂或废水处理厂的标准操作期间）紫外线灯和套筒。 本文总结了这项正在进行的研究的中期结果以及 在全面应用中采用新验证工具的影响。包括10个参考文献、表格和图表。

The objective of the AwwaRF Tailored Collaboration Optimzation of UV Reactor Validation is to improve the existing tools for UV reactor validation, thereby optimizing system sizing (reducing costs) while maintaining public health protection. This is being achieved through 3 main initiatives. The first involves finding a better challenge microorganism. The organisms most frequently selected for use in these tests are MS-2 coliphage (in the United States) and Bacillus subtilis spores (in Europe). Because these microorganisms are much more resistant to UV light than many waterborne pathogens, an uncertainty factor, termed the "RED bias", is required (USEPA, 2003b). Use of a RED bias safety factor can lead to over-sizing of hydraulically well-designed UV systems. The goal of this work was to identify and evaluate microbial surrogates whose inactivation characteristics better match the target pathogen(s), thereby reducing the required RED bias value. The second initiative involves finding a better UV-absorbing compound. During reactor validation, low UV transmittance at 254 nm (UVT) water conditions are simulated by the addition of UV-absorbing chemicals to the feed water. The most commonly used UV-absorbing compounds are coffee (NWRI/AwwaRF, 2000), flourescein (ÖNORM, 2002) and lignin sulphonate (DVGW, 1997). For a given UVT, the UV absorbance spectra of coffee, flourescien and lignin sulphonate differ substantially from that of water treatment plant (WTP) waters. This difference impacts both dose delivery and monitoring with UV systems equipped with medium-pressure (MP) lamps. This necessitates the use of an uncertainty factor to account for this difference in conditions between the test and the WTP. This safety factor is termed the "polychromatic bias." The second goal of this project is to identify and validate sources of NOM for lowering UVT during validation to reduce or, if possible, eliminate, the polychromatic bias factor. The third initiative involves investigating the impact of lamp and sleeve aging on dose delivery. Spectral shifts in the UV output of MP lamps (Phillips, 1983) and the UV transmittance of lamp sleeves (Kawar, 1998) with aging has been reported. Very significant visual changes have been observed in drinking water pilot studies (Mackey, 2004) and at many wastewater treatment plants. The degree of spectral shifts in lamp output and sleeve UV transmittance with commercial UV reactors used in drinking water applications is not known. If significant, there will be a need to restrict sensor response or use appropriate safety factors to account for these effects. For this reason, this third task involves the characterization of the UV output of new and aged (during standard operation at a water or wastewater plant) UV lamps and sleeves. This paper summarizes the interim results of this on-going study and the implications for the adoption of new validation tools in full-scale applications. Includes 10 references, tables, figure.