高盐废水生物阴极MFCs产电及脱氮性能研究  

Study on electricity generation and nitrogen removal performance of bio-cathode MFCs in high-salt wastewater

作　　者：杨茜 李轩[1] 蒋涛阳 王测文 付国楷 YANG Qian;LI Xuan;JIANG Tao-yang;WANG Ce-wen;FU Guo-kai(School of Urban Construction and Environmental Engineering,Chongqing University,Chongqing 400045,China;Key Laboratory of Three Gorges Reservoir Region’s Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,China)

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045 [2]重庆大学三峡库区环境与生态部重点实验室,重庆400045

出　　处：《应用化工》2020年第1期22-27,共6页Applied Chemical Industry

基　　金：国家自然科学基金项目(51778082);重庆市自然基金(cstc2019jcyj-msxmX0573)

摘　　要：构建了双室生物阴极微生物燃料电池系统(MFCs),分析了曝气强度对系统脱氮和产电性能的影响,并讨论了间歇曝气对污染物的去除影响。结果表明,生物阴极MFCs实现了污染物去除和能量回收的双重目的,生物阴极MFCs稳定运行时,最大功率密度、开路电压和电池内阻分别为2.72 W/m^3、660 mV、131Ω。曝气强度40~100 mL/min、DO浓度在4~6 mg/L时,电压输出最大为253 mV,产电周期最长,生物阴极MFCs对COD去除以及脱氮效果较为理想。间歇式曝气运行方式既能有效提高生物阴极脱氮性能又可以减少维持高浓度DO的能量输入。控制间歇曝气2 h,对污染物TN去除效果最好,比持续曝气提高20%。Bio-cathode microbial fuel cells(MFCs)of double-chamber mustard wastewater were constructed.The aeration strengths were investigated to study the system’s nitrogen removal and electricity production performance,and intermittent exposure was discussed.Gas removal studies on the removal of contaminants.The results show that the bio-cathode MFCs achieve the dual purpose of pollutant removal and energy recovery.When the bio-cathode MFCs are stably operated,the maximum power density,open circuit voltage and battery internal resistance are 2.72 W/m^3,660 mV and 131Ω,respectively.The aeration intensity is between 40~100 mL/min,the DO concentration is 4~6 mg/L,the maximum voltage output is 253 mV,and the power generation cycle is the longest.The bio-cathode MFCs are relatively ideal for COD removal and denitrification.The intermittent aeration operation mode can effectively improve the biological cathode denitrification performance and reduce the energy input of maintaining high concentration DO.Controlled ie intermittent aeration 2 h has the best effect on the removal of pollutant TN,compared with continuous aeration to increase the removal rate of TN by 20%.

关 键 词：微生物燃料电池 榨菜废水 生物阴极 生物电化学脱氮 

分 类 号：TQ517[化学工程] TQ152