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使用过氧化和硫酸盐的先进氧化工艺,用于饮用水中微污染物的超快降解

Han Chen¹, Tao Lin¹, Yuchen Wang¹

¹Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, PR China; College of Environment, Hohai University, Nanjing 210098, PR China.

Journal of hazardous materials

|March 4, 2025

概括

一种新的过氧化 (H2O2) /硫酸盐 (S(IV)) 先进的氧化工艺有效降解饮用水中的微污染物. 这种环保的系统产生了多种反应性物种,与其他AOP相比,提供了更高的性能.

科学领域:

环境化学环境化学
水处理技术水处理技术
先进的氧化过程 (AOPs)

背景情况:

基于硫酸盐 (S(IV)) 的AOP正在成为基于硫酸盐的AOP的成本效益和低毒性替代品.
过氧化 (H2O2) 是一种成熟的,环保的氧化剂,用于饮用水处理.
现有的AOP面临着效率和副产品形成方面的挑战.

研究的目的:

介绍和描述一种新的H2O2/S(IV) AOP用于饮用水中的微污染物降解.
调查H2O2/S(IV) 系统中反应性物种 (RSs) 的生成.
与其他AOP相比,评估H2O2/S(IV) 系统的降解效率和动力学.

主要方法:

研究了H2O2/S(IV) 系统,观察了H2O2.2.IV的过度静态度S(IV) 消耗.
量化反应物种包括硫酸盐基 (SO4•−),基基 (•OH),超氧化离子基 (O2•−) 和单片氧 (1O2).
开发了一种动力模型来预测15种微污染物在各种水矩阵和pH条件 (3.011.0) 中的降解率.

主要成果:

该H2O2/S(IV) 系统迅速产生显著度的SO4•−和OH (约. 10−12 M) 和 O2•− 和 1O2 (大约. 10−13 M) 的时间.
微污染物的降解率比UV/H2O2,UV/S(IV),Fe2+/H2O2和Fe3+/S(IV系统高出1-2个数量级.
该系统在复杂的水矩阵中表现出有效性,并在随后的化过程中减少了消毒副产品的形成.

结论:

新型H2O2/S(IV) AOP是一种高效且有前途的技术,用于从饮用水中去除微污染物.
它能够产生多种反应性物种,其卓越的性能突显了其实际应用的潜力.
与传统的AOP相比,该系统在降解速度和减少副产品形成方面具有优势.

关键词:

消毒副产品消毒的副产品过氧化/硫酸盐系统运动学运动学微污染物微污染物超快的降解速度超快的降解速度

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