紫外线LED废水消毒:未来已经在我们面前
Sean A MacIsaac1, Bailey Reid1, Carolina Ontiveros1
1Centre for Water Resources Studies, Dalhousie University Halifax, 1360 Barrington Street, Halifax, NS B3H 4R2, Canada.
Water research X
|December 13, 2024
概括
第一个大型的UV LED废水消毒系统有效地减少了大肠杆菌的总数. 这项研究证明了紫外线LED.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 微生物学 微生物学
背景情况:
- 传统的低压紫外线系统被广泛用于废水消毒.
- 新兴的UV LED技术为消毒应用提供了潜在的优势.
- 关于城市废水中UV LED反应堆的全面性能,数据有限.
研究的目的:
- 为了评估世界上第一个全尺寸的280nm紫外线LED反应堆对废水消毒的有效性.
- 为了对功能性废水设施的既定技术进行UV LED消毒性能的比较.
- 将实验室级消毒数据与全面的运行性能联系起来.
主要方法:
- 测试一个全尺寸的UV LED反应器在两个流量:545 m3 day-1和817 m3 day-1.1.
- 测量了总大肠杆菌减少日志和输送的紫外线流动 (28148 mJ cm−2).
- 性能与先前的紫外线审计研究进行比较.
主要成果:
- 在545 m3天-1.1时,总胆固醇的平均日志减少>3次.
- 在所有运行条件下,在817 m3 day-1时实现了>2.5的平均日志减少.
- 交付的流利水平与安装前紫外线审计建议保持一致.
结论:
- 紫外线LED是一种有效的废水消毒剂,可与传统的低压紫外线系统相提并论.
- 这项研究首次证明了UV LED在大型设施中对城市废水消毒的有效性.
- 该方法为公用事业公司评估新兴紫外线消毒技术提供了一个新的工具.
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