Abstract：
Electrocatalytic coupled biofilter (EBF) technology organically integrates the characteristics of electrochemistry and microbial redox, providing ideas for effectively improving biological treatment performance. In this study, an EBF system was developed for enhanced degradation of cyclohexanone in contaminated water. Experimental results show that the system can effectively remove cyclohexanone in contaminated water. Under the optimal parameters, the removal rates of cyclohexanone, TP, NH4+-N and TN were 97.61 ± 1.31%, 76.31 ± 1.67%, 94.14 ± 2.13% and 95.87 ± 1.01% respectively. Degradation kinetics studies found that electrolysis, adsorption, and biodegradation pathways play a major role in the degradation of cyclohexanone. Microbial community analysis indicates that voltage can affect the structure of the microbial community, with the dominant genera shifting from Acidovorax (0 V) to Brevundimonas (0.7 V). Additionally, Acidovorax, Cupriavidus, Ralstonia, and Hydrogenophaga have high abundance in the biofilm and can effectively metabolize cyclohexanone and its intermediates, facilitating the removal of cyclohexanone. In summary, this research can guide the development and construction of highly stable EBF systems and is expected to be used for advanced treatment of industrial wastewater containing cyclohexanone.
摘要：
电催化耦合生物滤池(EBF)技术有机地融合了电化学和微生物氧化还原的特点,为有效提高生物处理性能提供思路。在这项研究中,开发了一种EBF系统，用于增强污染水中环己酮的降解。实验结果表明，该系统能有效去除污染水中的环己酮。在最优参数下，环己酮的去除率，TP,NH4+-N和TN为97.61±1.31%,76.31±1.67%，分别为94.14±2.13%和95.87±1.01%。降解动力学研究发现，电解，吸附，而生物降解途径在环己酮的降解中起主要作用。微生物群落分析表明,电压可以影响微生物群落的结构,优势属从Acidovorax（0V）转移到Brevundimonas（0.7V）。此外,Acidovorax,Cupriavidus,Ralstonia,和hydrogenophaga在生物膜中具有很高的丰度，可以有效地代谢环己酮及其中间体，有利于环己酮的去除。总之,该研究可指导高稳定性EBF系统的开发和建设，有望用于含环己酮工业废水的深度处理。
