Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

Fabrication of a Water Sterilization System Utilizing a 275 nm-wavelength UVC LED and TIR Lens-equipped Light Source

275 nm UVC LED와 TIR 렌즈 장착 광원을 이용하는 물 살균장치 제작

  • Kawan Anil (Department of Electronic Engineering, Sunmoon University) ;
  • Seung Hui Yu (Department of Electronic Engineering, Sunmoon University) ;
  • Seung Hoon Yu (Department of Electronic Engineering, Sunmoon University) ;
  • J. A. Park (Department of Electronic Engineering, Sunmoon University) ;
  • I. S. Shin (Department of Electronic Engineering, Sunmoon University) ;
  • S. J. Lee (Department of Electronic Engineering, Sunmoon University) ;
  • Y. B. Kim (Department of Electronic Engineering, Sunmoon University) ;
  • Y. B. Kown (Department of Electronic Engineering, Sunmoon University) ;
  • D. G. Han (Department of Electronic Engineering, Sunmoon University) ;
  • Soon Jae Yu (Department of Electronic Engineering, Sunmoon University) ;
  • Heetae Kim (Institute for Rare Isotope Science, Institute for Basic Science) ;
  • Seong Bae Park (DM LED Co., Ltd)
  • 카완 어닐 (선문대학교 전자공학과) ;
  • 유승희 (선문대학교 전자공학과) ;
  • 유승훈 (선문대학교 전자공학과) ;
  • 박준아 (선문대학교 전자공학과) ;
  • 신인식 (선문대학교 전자공학과) ;
  • 이승재 (선문대학교 전자공학과) ;
  • 김유빈 (선문대학교 전자공학과) ;
  • 권용빈 (선문대학교 전자공학과) ;
  • 한동균 (선문대학교 전자공학과) ;
  • 유순재 (선문대학교 전자공학과) ;
  • 김희태 (기초과학연구원 중이온가속기연구소) ;
  • 박성배 (주식회사 디엠엘이디)
  • Received : 2024.02.21
  • Accepted : 2024.03.20
  • Published : 2024.03.31
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Abstract

A water sterilization system is developed utilizing a 275 nm-wavelength LED light source equipped with a TIR lens. The system's light source is constructed by combining a 275 nm-wavelength UVC LED, known for its germicidal properties, with a TIR lens having a direction angle of 6.8 degrees. The optical simulation software 'LightTools' is employed to design and optimize the intensity of deep ultraviolet sterilizing light irradiation, its distribution, and sterilization capacity. In the inactivation experiment with E. coli, the water sterilizer system achieved a sterilization rate of 78.92 % while maintaining a water flow capacity of 50 L/min. Compared to the conventional mercury lamp light source water sterilizer system, the UVC LED water sterilizer system addresses environmental concerns related to mercury usage and offers advantages in terms of lifespan and durability.

Keywords

Acknowledgement

이 연구는 산업통상자원부 한국산업기술진흥원 (KIAT)과 교육부 부처협업사업 반도체전공트랙사업 (P0022203)의 지원으로 수행하였다. 또한 렌즈 광원 시스템 설계와 E-콜리배양 물 살균장치 시험에 도움을 주신 한국산업기술대학교 정미숙 교수님과 호서대학교 장인성 교수님께 감사를 드립니다.

References

  1. P. Jarvis, O. Autin, E. H. Goslan, and F. Hassard, Application of Ultraviolet Light-Emitting Diodes (UV-LED) to Full-Scale Drinking-Water Disinfection, Water 11, 1894 (2019).
  2. S. W. Rhee, H. S. Park, Mercury Distribution of major Components from 3-baned and General Spent Fluorescent Lamp, J. Korea Soc. Waste Manag., 30, 265 (2013).
  3. D. Morita, M. Yamamoto, K. Akaishi, K. Matoba, K. Yasutomo, Y. Kasai, M. Sano, S. I. Nagahama, and T. Mukai, Watt-Class High-Output-Power 365 nm Ultra-violet Light-Emitting Diodes, Jpn. J. AppL phys, 43, 5945 (2004).
  4. S. J. Yu, D. H. Kim, Y. S. Choi, and H. Kim, Development of a Very Small LED Lamp with a Low-Thermal-Resistance Lead Frame for an LCD Backlight Unit, J. Inf.. Disp., 10, 49 (2009).
  5. J. H. Seo, J. S. Lee, S. Y. Kim, Y. J. Jeong, H. J. Park, D. Y. Nam, and M. S. Jung, Design of a Bar-type TIR Lens Having a Freeform Surface for Forming a Line Beam Using an LED Light Source, Korean Journal of Optics and Photonics, 28, 295 (2017).
  6. M. A. Wurtele, T. Kolbe, M. Lipsz, A. Kulberg, M. Weyers, M. Kneissl, M. Jekel, Application of GaN-based ultraviolet-C light emitting diodes -UV LEDs-for water disinfection, Water Res., 45, 1481 (2011).
  7. J. H. Sung, S. J. Yu, K. Anil, and M. S. Jung, Fabrication of 365 nm Wavelength High Transmittance Sil-icone Resin TIR Lens and High Directivity Light Source Module for Exposure System, J. Korean Inst. Electr. Electron. Mater. Eng., 31, 267 (2018).
  8. C. C. Liao, H. X. Lin, C. L. Chien, C. M. Chang, and C. P. Hsu, Dispensed dome lens validation through optical simulations for high irradiance UV LED module, 2014 International Conference on Electronics Packag-ing (ICEP) (pp. 676-679) (2014).
  9. T. Takano, T. Mino, J. Sakai, N. Noguchi, K. Tsubaki, and H. Hirayama, Deep-ultraviolet light-emitting diodes with external quantum efficiency higher than 20% at 275 nm achieved by improving light-extraction efficiency, Appl. Phys. Express., 10, 031002 (2017).