<br>水和废水处理中的电化学消毒：确定水质和操作条件对性能的影响,Environmental Science & Technology

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水和废水处理中的电化学消毒：确定水质和操作条件对性能的影响
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2021-02-22 , DOI: 10.1021/acs.est.0c06254
Steven Hand ₁ , Roland D Cusick ₁

Affiliation

电化学消毒是一种通过电极表面氧化还原反应原位产生化学氧化剂的方法，近年来作为传统化学剂量消毒方法的替代方法引起了越来越多的关注。由于电化学消毒不需要运输和储存危险材料，并且可以在集中式和分布式处理环境中扩展，因此它显示出在资源有限的环境中使用以及作为老化集中式系统的补充的前景。在这篇评论中，我们探讨了处理环境、氧化剂选择和操作实践对电化学消毒系统性能的重要性。我们分析了饮用水、集中式废水和分布式废水处理环境中基于游离氯和羟基自由基的系统中水成分对氧化剂需求和所需消毒剂剂量的影响。确定了氧化剂生成过程中能量消耗的驱动因素，并根据最佳模型性能评估了实验报告的电化学消毒系统的能量性能。我们还强调了电化学消毒的有前景的应用和操作策略，并提出了未来工作的报告标准。

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Electrochemical Disinfection in Water and Wastewater Treatment: Identifying Impacts of Water Quality and Operating Conditions on Performance

Electrochemical disinfection—a method in which chemical oxidants are generated in situ via redox reactions on the surface of an electrode—has attracted increased attention in recent years as an alternative to traditional chemical dosing disinfection methods. Because electrochemical disinfection does not entail the transport and storage of hazardous materials and can be scaled across centralized and distributed treatment contexts, it shows promise for use both in resource limited settings and as a supplement for aging centralized systems. In this Critical Review, we explore the significance of treatment context, oxidant selection, and operating practice on electrochemical disinfection system performance. We analyze the impacts of water composition on oxidant demand and required disinfectant dose across drinking water, centralized wastewater, and distributed wastewater treatment contexts for both free chlorine- and hydroxyl-radical-based systems. Drivers of energy consumption during oxidant generation are identified, and the energetic performance of experimentally reported electrochemical disinfection systems are evaluated against optimal modeled performance. We also highlight promising applications and operational strategies for electrochemical disinfection and propose reporting standards for future work.

更新日期：2021-03-16

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