The design of efficient ultraviolet light emitting diode (UV-LED) reactors is of paramount importance for delivering a high UV dose (fluence). This is particularly critical to the disinfection of UV-resistant organisms, such as adenovirus, in continuous UV systems, given the low wall plug efficiency of UV-LEDs. The UV-LED offers reactor design flexibility, allowing to conform the reactor fluence rate to its hydrodynamics to a high degree, leading to improved design efficiency. In this study, we designed and fabricated a flow-through multi-baffle UV-LED reactor containing 18 UV-LEDs for delivering high UV fluence to a flow of water. Further, we developed a computational model for simulating the reactor performance, to fine-tune the fluence rate and hydrodynamics conformity through exploring several design concepts. The model was evaluated by experimental studies using male-specific-2 (MS2) bacteriophage and adenovirus as the model UV resistance microorganisms. The radiant field was adjusted through the LED arrangement and radiation profile modification. The reactor performance was studied under six different LED arrangements, three irradiation modes, and flow rates of 0.75, 1, and 2 L min^–1. Adenovirus inactivation at 1 L min^–1 from 1.6 logs increased to 4.1 logs through radiant field modification and enhancing the design efficiency. It was observed that the flexibility offered by UV-LEDs in adjusting the radiation pattern and hydrodynamics could lead to the design of highly-efficient reactors through positively correlating the UV fluence rate profile with the velocity filed. This study presents a detailed discussion concerning irradiation methods and provides insights applicable to UV-LED reactor design.

有效的紫外发光二极管（UV-LED）反应器的设计对于提供高的UV剂量（注量）至关重要。鉴于UV-LED的壁塞效率低，这对于在连续UV系统中对抗紫外线生物（例如腺病毒）的消毒尤为重要。UV-LED提供了反应堆设计灵活性，可以使反应堆注量率与其流体力学高度一致，从而提高了设计效率。在这项研究中，我们设计并制造了一种流通式多挡板UV-LED反应器，该反应器包含18个UV-LED，可为水流提供高的UV通量。此外，我们开发了一个用于模拟反应堆性能的计算模型，以通过探索一些设计概念来微调通量率和流体力学一致性。使用雄性特异性2（MS2）噬菌体和腺病毒作为模型抗紫外线微生物，通过实验研究对模型进行了评估。通过LED布置和辐射轮廓修改来调整辐射场。在六种不同的LED布置，三种照射模式以及0.75、1和2 L min的流速下研究了反应堆性能^–1。通过辐射场修改和提高设计效率，在1 L min ^–1时腺病毒的失活从1.6 log增加到4.1 log。据观察，UV-LED在调节辐射方向图和流体动力学方面提供的灵活性可以通过使UV能量通量率分布与速度呈正相关来实现高效反应器的设计。这项研究提出了有关辐照方法的详细讨论，并提供了适用于UV-LED反应器设计的见解。