微生物燃料电池-人工湿地耦合系统处理污水及产电性能研究  

Study on the Performance of Microbial Fuel Cell-Constructed Wetland for Wastewater Treatment and Simultaneous Electricity Generation

作　　者：李雪[1] 王琳[1] 王丽[2] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266000 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《水处理技术》2018年第2期109-114,共6页Technology of Water Treatment

基　　金：国家留学基金管理委员会资助项目(201203070391)

摘　　要：以芦苇为湿地植物构建微生物燃料电池-人工湿地耦合系统(MFC-CW),研究进水COD、水力停留时间(HRT)及阴极曝气量对MFC-CW产电和污水净化性能的影响。结果表明:MFC-CW系统经驯化后能够稳定运行,在净化污水的同时产电。随着进水COD的增大,MFC-CW系统的输出电压及COD去除率均先增大后减小,在COD为200 mg/L时系统产电量最大,为294 m V;COD为300 mg/L时系统COD去除率最大,为89.4%。随着HRT的增大,系统输出电压先增大后减小,在HRT为3 d时达到最大,为280 m V;系统COD去除率先增大后趋于平稳,HRT为3 d时去除率最高,为86%。系统输出电压及COD去除率随阴极曝气量的增大而增大,但其增长的速率逐渐减小。选择最适阴极曝气量时需要综合考虑输出电压、污水净化效果及经济成本。综合考虑各因素,优选0.075 m^3/h为最佳曝气量。Reed was used as wetland plant to build microbial fuel cell-constructed wetland（MFC-CW）, the effect of influent COD concentration,hydraulic retention time（HRT） and cathode aeration rate on MFC-CW power generation and wastewater treatment performance was researched. The results showed that, MFC-CW could maintain stable operation after domestication and it could produce renewable energy during wastewater treatment process. With the increase of influent COD concentration, output voltage of MFC-CW system and COD removal rate first increased and then decreased,when COD concentration was 200 mg/L, the output voltage reached the maximum was 294 m V, when COD concentration was 300 mg/L, the COD removal rate reached the maximum was 89.4%. With the increase of HRT, the output voltage and COD removal rate were firstly increased to a maximum of 280 m V and 86%, respectively, when HRT was 3 d, and then output voltage decreased and COD removal rate tend to steady. The output voltage and COD removal rate increased with the increase of cathode aeration rate, but the growth rate gradually decreased. Considering the power generation, wastewater treatment and economic cost, 0.075 m^3/h of cathode aeration rate was the optimal choice.

关 键 词：微生物燃料电池 人工湿地 进水COD 水力停留时间 阴极曝气量 

分 类 号：X703.1[环境科学与工程—环境工程]