College of Civil Engineering and Architecture, Liaoning University of Technology, Jinzhou 121001, China E-mail:
Research Institute of Solid Waste, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Water Sci Technol. 2022 Aug;86(4):690-713. doi: 10.2166/wst.2022.254.
With the rapid economic development, the discharge of industrial wastewater and municipal wastewater containing many refractory organic pollutants is increasing, so there is an urgent need for processes that can treat refractory organics in wastewater. Iron-carbon micro electrolysis and advanced oxidation based on persulfate radicals (SO) have received much attention in the field of organic wastewater treatment. Iron-carbon micro electrolysis activated persulfate (Fe-C/PS) treatment of wastewater is characterized by high oxidation efficiency and no secondary pollution. This paper reviews the mechanism and process of Fe-C/PS, degradation of organics in different wastewater, and the influencing factors. In addition, the degradation efficiency and optimal reaction conditions (oxidant concentration, catalyst concentration, iron-carbon material, and pH) of Fe-C/PS in the treatment of refractory organics in wastewater are summarized. Moreover, the important factors affecting the degradation of organics by Fe-C/PS are presented. Finally, we analyzed the challenges and the prospects for the future of Fe-C/PS in application, and concluded that the main future directions are to improve the degradation efficiency and cost by synthesizing stable and efficient catalysts, optimizing process parameters, and expanding the application scope.
随着经济的快速发展，工业废水和含许多难降解有机污染物的城市污水排放量不断增加，因此迫切需要能够处理废水中难降解有机物的工艺。基于过硫酸盐自由基（SO）的铁碳微电解和高级氧化已在有机废水处理领域受到广泛关注。铁碳微电解激活过硫酸盐（Fe-C/PS）处理废水的特点是氧化效率高，无二次污染。本文综述了 Fe-C/PS 的机理和工艺、不同废水有机物的降解以及影响因素。此外，还总结了 Fe-C/PS 处理废水中难降解有机物的降解效率和最佳反应条件（氧化剂浓度、催化剂浓度、铁碳材料和 pH）。此外，还提出了影响 Fe-C/PS 降解有机物的重要因素。最后，我们分析了 Fe-C/PS 在应用中的挑战和未来前景，并得出结论，未来的主要方向是通过合成稳定高效的催化剂、优化工艺参数以及扩大应用范围来提高降解效率和降低成本。
