废水中的原生酸盐增强了222nm紫外线的微污染物的先进氧化
Emma M Payne1, Ryan P McKeown1, Haotian Cai2
1Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, 4001 Discovery Dr., Boulder, Colorado 80303, United States.
Environmental science & technology
|January 30, 2026
概括
使用酸盐作为催化剂,UV222光在废水中有效降解1,4-二氧化和NDMA. 与传统的UV/H2O2方法相比,这种先进的氧化工艺可以节省成本并更快地去除污染物.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 摄影化学的使用.
背景情况:
- 酸盐在环境水中普遍存在,包括废水废水.
- 酸盐吸收222nm的紫外线,产生基激素以进行先进的氧化.
- 现有的紫外线治疗通常需要化学添加剂,如过氧化.
研究的目的:
- 将UV222处理与UV254/H2O2进行比较,用于废水中去除1,4-二氧化和NDMA.
- 评估UV222高级氧化技术的效率和成本效益.
- 调查酸盐在紫外线引起的污染物降解中的作用.
主要方法:
- 用不同的酸盐度对废水样本进行UV222和UV254辐射.
- 基于事件流动性的污染物降解率 (1,4-二氧化,NDMA) 的比较.
- 对UV222与UV254/H2O2处理的电能消耗和成本分析.
主要成果:
- UV222处理实现了比UV254/H2O2.4更快的2.8-3.9倍的1,4-二氧化降解.
- 尽管UV222的透射率低,但UV222处理的结果是NDMA的去除速度快1.5-3.2倍.
- 在考虑化学品成本时,UV222的预计成本节约为12.4-21.8%.
结论:
- 使用现场酸盐进行UV222高级氧化是一种高效且潜在节省成本的废水处理方法.
- 这项技术有效地降解了反抗性污染物,如1,4-二氧化和NDMA.
- 其他由UV222产生的反应性物种也对微污染物降解有所贡献.
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