CW-MFC中的电子流及对废水处理的强化作用  

Electron Flow in Constructed Wetland-Microbial Fuel Cells and Its Effect on Wastewater Treatment Enhancement

作　　者：袁玉杰 赵亚乾 付晶淼[1] Olivia Addo-Bankas 卫婷 YUAN Yu-jie;ZHAO Ya-qian;FU Jing-miao;Olivia Addo-Bankas;WEI Ting(State Key Laboratory of Eco-Hydraulics in Northwest Arid Region of China,Xi’an University of Technology,Xi’an 710048,China;Dooge Centre for Water Resources Research,School of Civil Engineering,University College Dublin,Ireland)

机构地区：[1]西安理工大学西北旱区生态水利工程国家重点实验室,陕西西安710048 [2]爱尔兰都柏林大学土木工程系Dooge水研究中心,爱尔兰

出　　处：《中国给水排水》2021年第16期27-34,共8页China Water & Wastewater

摘　　要：人工湿地-微生物燃料电池(CW-MFC)耦合系统中电子转移的过程极其复杂,对电极之间电子的转移、微生物与电极的相互作用等还存在诸多研究空间。综述了电活性人工湿地中电子流的形成、影响因素及电子流驱动下的污水处理实践,讨论了电子流对污染物去除的强化作用。指出CW-MFC对废水处理的强化作用主要是由于厌氧区的电子转移,污染物的降解与电活性人工湿地的氧化还原条件密切相关,电极间距、位置、材料及内外电阻均对系统性能有一定的影响,微生物菌群也有可能参与电子转移机制。最后对电活性人工湿地未来的研究方向进行了展望,提出应在电子回收、质子传递和微生物与电极的相互作用等方面进行深入研究。The process of electron transfer in the coupling system of constructed wetland-microbial fuel cell(CW-MFC)is extremely complex.While there are still many research spaces for electron transfer between electrodes,as well as the interaction of microbes with the electrodes.In this paper,the formation and the influence factors of the electron flow in electroactive CWs and the effects driven by the electron flow on wastewater treatment practice are reviewed in great details.Various studies supported that the enhancement of wastewater treatment in CW-MFC is mainly due to the electron transfer in the anaerobic zone of CW.The degradation of pollutants is closely related to the redox conditions of electroactive CWs.The factors such as distance,position,material and internal&external resistance of the electrode,have certain influence on the performance of the system.Microbiota may also be involved in electron transfer mechanisms.Finally,the future research directions of electroactive CWs should focus on exploring further insight into the electron recovery,proton transfer and interaction between microorganisms and electrodes.

关 键 词：人工湿地-微生物燃料电池 电子流 废水处理 

分 类 号：TU992[建筑科学—市政工程]