סמינר מחלקה של דנה פוסטי-טכנולוגיות מבוססות חיטוי UV באמצעות UV-LED

_{School of Mechanical Engineering Seminar
Tuesday 09.07.2024 at 14:00}

_{Wolfson Building of Mechanical Engineering, Room 206}

UV Water Disinfection-Based Technologies Using UV-LED

_{Dana Pousty}

_{PhD student under the supervision of Prof. Hadas Mamane}

_{School of Mechanical Engineering, Tel Aviv University, Tel Aviv, Israel}

_{Ultraviolet (UV) irradiation is a widely recognized disinfection method effective against a broad spectrum of pathogens, including bacteria, viruses, and eukaryotic parasites. Traditional UV sources, such as mercury vapor lamps, present several challenges, including overheating, high energy consumption, limited durability, and environmental concerns due to mercury use. Furthermore, the efficacy of these lamps diminishes over time due to fouling, which compromises water treatment systems' efficiency and safety. Additionally, the advent of UV light-emitting diodes (UV-LEDs) introduces a promising alternative that potentially overcomes these limitations by offering lower energy consumption, a small and robust design, a longer lifespan, and the absence of toxic mercury. However, the application of UV-LEDs in water disinfection is still in its infancy, with unresolved questions regarding optimal wavelengths, intensity effects, and the system's effectiveness in distribution networks. This research aims to address these gaps, advancing the understanding and implementation of UV-LED technology for water disinfection. Owing to UV-LEDs’ significant technological advancements, UV-LEDs offer versatile applications across water treatment systems, including pipelines, disinfection reactors, and storage tanks (Fig. 1). Consequently, optimizing UV-LED deployment necessitates a comprehensive understanding of their benefits in diverse settings. This research endeavors to bridge these knowledge gaps, promoting the refinement and application of UV-LED technology in water disinfection.}

_{Fig 1. The current paradigm of water distribution system management juxtaposes that with the potential benefits of employing UV irradiation.}