硝酸盐质量浓度对微生物燃料电池产电及反硝化的影响  

Effect of Nitrate Concentration on Microbial Fuel Cell to Produce Electricity and Denitrification

作　　者：张立成[1,2] 于洋[1] 程亚楠[1] 刘晓伟[2] 张爽[2] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]沈阳建筑大学建筑设计研究院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2013年第6期1128-1132,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51178249);辽宁省科学技术计划项目(20122229005)

摘　　要：目的研究在不同的硝酸盐质量浓度下，MFC的产电、阴极反硝化情况及阳极COD和氨氮的处理情况．实现产电与阴极反硝化的同时进行．方法阳极以实验生活污水为处理对象，阴极以自配具有一定质量浓度的硝酸盐溶液为处理对象，改变阴极的硝酸盐质量浓度，阳极为间歇厌氧运行模式，阴极为间歇缺氧运行模式．结果 当硝酸盐质量浓度由20-200mg／L逐渐增加时，随着初始硝酸盐质量浓度的增加，亚硝酸盐的积累逐渐增加，最高可达65mg／L，硝酸盐相对去除率几乎没有变化，而硝酸盐的绝对去除率则逐渐减小．硝酸盐质量浓度从20～120mg／L变化时对微生物燃料电池的产电效果基本没有影响，当硝酸盐质量浓度增加到160mg／L时，平均输出电压和最高功率密度明显增加，而当硝酸盐质量浓度增加到200mg／L时，平均输出电压和最高功率密度又明显减少．结论阴极硝酸盐质量浓度为160mg／L时，MFC阳极COD的去除率最高，产电效果最好．Effect of nitrate concentration on microbial fuel cell to produce electricity and denitrification was investigated in the laboratory where the actual sewage were used in anode and nitrate solution were used in cathode. Electricity production and denitrification in cathode simultaneously electricity generation, denitrifica- tion in cathode, removal of COD and ammonia nitrogen in anode at different nitrate concentrations in cath- ode were discussed. The nitrite concentration increased when the initial nitrate concentration was 20 -200 mg/L, up to 65 mg/L. But the absolute removal rate of highest power density and average output voltage was not nitrate reduced by the nitrate concentration. The affected when the initial nitrate concentration was 20 - 120 mg/L. The highest power density and average output voltage increased when the initial nitrate con- centration was 160mg/L. But the highest power density and average output voltage reduced when the initial nitrate concentration was 200 mg/L. Removal of COD in anode and electricity production is the best when the nitrate concentration was 160 mg/L.

关 键 词：微生物燃料电池 阴极反硝化 硝酸盐质量浓度 功率密度 

分 类 号：X382[环境科学与工程—环境工程]