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1Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo. 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Journal of water and health
|September 27, 2023
概括
紫外线发光二极管 (UV-LED) 为小型分散系统提供有效的水消毒. 这项技术成功地减少了像大肠杆菌这样的细菌,在日本三个地点进行了一年的研究中.
科学领域:
- 环境微生物学 环境微生物学
- 水处理技术水处理技术
- 公共卫生工程 公共卫生工程
背景情况:
- 分散的水系统需要可靠的消毒方法.
- 紫外线发光二极管 (UV-LED) 是传统消毒技术的有希望的替代品.
- 在现实世界中评估UV-LED性能,远程设置至关重要.
研究的目的:
- 为了评估一个流通UV-LED模块的消毒效率,在小型,分散的供水中.
- 在一年内监测UV-LED消毒对关键细菌指标的影响.
- 研究水的物理化学参数与UV-LED消毒功效之间的相关性.
主要方法:
- 在日本的三个偏远地区部署了一种透流UV-LED消毒模块.
- 通过监测大肠杆菌,大肠杆菌总数,标准板数和异质板数 (HPC) 细菌来评估消毒效率.
- 源水的物理化学参数,包括紫外线发射率 (UVT),同时进行测量.
主要成果:
- 紫外线LED模块证明了有效的消毒,在30L/分钟时实现了2.7 log的大肠杆菌不活化.
- 在两个地点,HPC失活在各个地点保持一致 (p > 0.01),在一年后没有观察到显著的性能恶化.
- HPC无活化与UVT没有相关性,表明UVT作为消毒效率的唯一预测因素的限制.
结论:
- 紫外线LED技术在小型和分散的供水系统中有效消毒水.
- 该研究强调了UV-LED消毒在长期使用的稳定性.
- 单独的UVT不足以预测实际的UV消毒性能.
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