在UF之前的预处理中,VUV与低剂量H2O2相结合:性能,机制,DBPs形成和毒性评估
Shengnan Chen1, Zhiwei Zhao2, Chuang Wang3
1College of Environment and Ecology, Chongqing University, Chongqing 400045, PR China.
Journal of hazardous materials
|June 20, 2024
概括
真空紫外线 (VUV) /H2O2预处理有效地去除自然有机物 (NOM) 并减轻超系统中的膜污染. 这种先进的氧化过程的性能优于UV/H2O2,减少了消毒副产品,改善了水质.
科学领域:
- 水处理技术水处理技术
- 先进的氧化过程 先进的氧化过程
- 膜科学 膜科学 膜科学
背景情况:
- 超过 (UF) 对于饮用水处理至关重要,但会受到膜污染的影响,通常是由自然有机物 (NOM) 引起的.
- 像UV/H2O2这样的传统预处理方法在去除污染物和减轻污染方面存在局限性.
研究的目的:
- 评估真空紫外线 (VUV) /H2O2作为UF系统预处理的有效性.
- 为了比较VUV/H2O2与UV/H2O2在NOM去除,膜污染缓解和消毒副产品 (DBP) 形成方面.
主要方法:
- 研究的VUV/H2O2和UV/H2O2预处理过程用于NOM去除.
- 分析了基 (HO•) 生成及其与H2O2剂量相关性.
- 评估了膜污染的缓解和污染机制的变化.
- 预处理后评估的DBP形成和水的毒性.
主要成果:
- 与UV/H2O2相比,VUV/H2O2显示出更高的NOM去除和更高的HO•基度,归因于185nm光子.
- VUV/H2O2预处理显著减少了膜污染,并改变了污染机制.
- 在VUV/H2O2预处理时观察到有效减少DBP形成和急性毒性.
- H2O2影响了膜表面形态,但不是机械性能.
结论:
- VUV/H2O2是对UF的高效预处理,增强了NOM降解和污染控制.
- 这种方法在改善水质和减少DBP形成方面比UV/H2O2具有显著的优势.
- VUV/H2O2为可持续饮用水处理提供了一个有前途的先进氧化策略.
关键词:
消毒副产品消毒的副产品自然有机物质是天然的有机物质.紫外线/{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}{2O}超过膜中的污染物.在VUV/H(2)O(2)更多相关视频
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