在饮用水处理中,溶解臭氧与颗粒状活性炭接触时,低效利用基
1Graduate School of Global Environmental Studies, Kyoto University, Room 221, Building C1-2, Katsura Campus, Kyoto University, Nishikyo-ku, Kyoto, Kyoto Prefecture, Japan.
Journal of environmental management
|March 5, 2026
概括
保持颗粒活性炭 (GAC) 上游的残留臭氧是饮用水处理中的基 (·OH) 反应的一个低效的策略. 优化臭氧剂量以达到GAC零残留臭氧,可以改善微污染物的去除,并减少酸盐的形成.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
背景情况:
- 臭氧 (O3) 处理对于通过基基 (·OH) 来清除饮用水中的微污染物至关重要.
- 颗粒活性炭 (GAC) 通常用于臭氧化的下游,导致溶解臭氧和GAC之间的潜在接触.
研究的目的:
- 为了比较散装水中的OH介导反应与GAC的疗效.
- 评估残留臭氧对OH反应和酸盐形成的影响.
- 为优化臭氧化和GAC处理提供操作指导.
主要方法:
- 确立了硫酸 (BSA) 作为一种新的OH探针,使用光检测的液体染色学量化其去除.
- 比较了可归因于在散装水中的OH反应和在各种温度,pH值和臭氧剂量的GAC上的BSA去除率.
- 评估了GAC上游残留臭氧对BSA去除和酸盐形成的影响.
主要成果:
- ·高中介性BSA在GAC上的去除率始终低于散装水中的十分之一,每单位消耗的臭氧.
- 在GAC上游没有残留臭氧的运行保持了BSA去除效率.
- 消除残留臭氧显著减少了不良的酸盐形成.
结论:
- 保持GAC上游的残留臭氧是最大限度地消除OH驱动微污染物的低效策略.
- 优化臭氧剂量以实现GAC流入处的零残留臭氧是一种实用和有效的操作调整.
- 这一策略提高了处理效率,并减轻了饮用水处理厂的酸盐形成问题.
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