Abstract:

Recently, refractory organic pollutants have been widely detected in natural water bodies, posing a serious threat to aquatic ecosystems and human health. The biofilm electrode technology is increasingly recognized as a promising approach in the field of recalcitrant pollutant treatment owing to its environmental friendliness, high removal efficiency, and wide applicability. In this study, a three-dimensional biofilm electrode reactors (3D-BERs) is constructed; the degradation mechanism of organic pollutants by 3D-BERs is elucidated; the synergistic degradation effect of electrochemical catalytic oxidation and electroactive microorganisms is analyzed; the enhanced degradation mechanism of pollutants is explicated from the perspective of electron migration; and the impact of construction methods and operational parameters of 3D-BERs on reactor efficiency is outlined. Furthermore, this study systematically reviews the application and advantages of 3D-BERs in treating refractory organic chemical wastewater, proposes the development prospects of 3D-BERs technology, and highlights the focus of future research efforts. Finally, this study aims to provide novel insights into the efficient treatment of recalcitrant organic chemical industrial wastewater to further promote the application and dissemination of biofilm electrode technology in the field of recalcitrant organic pollutant treatment.

Key words: three-dimensional biofilm electrode reactors (3D-BERs), electroactive microorganisms (EAMs), refractory organic chemical wastewater, electrochemical

摘要：

近年来，难降解有机化工污染物在自然水体中被广泛检出，对水生态环境和人体健康构成了严重威胁。生物膜电极技术因具备环境友好、去除效率高、适用范围广等优点，在难降解污染物处理领域应用前景日渐广阔。对此，介绍了三维生物膜电极（3D-BERs）反应器构建方法，阐述了三维生物膜电极对有机污染物的降解机理，分析了电化学催化氧化与电活性微生物（EAMs）的协同降解作用，从电子迁移强化角度解析了污染物强化降解机制，并概述了3D-BERs的构建方法与运行参数对反应器效率的影响。本文系统综述了3D-BERs在难生化有机化工废水处理领域中的应用与优势，提出了三维生物膜电极技术的发展前景和今后研究工作的重点方向，为难生化有机化工废水的高效处理提供新思路与技术选择。

关键词: 三维生物膜电极, 电活性微生物, 难生化有机化工废水, 电化学