微生物燃料电池双向处理焦化-重金属废水性能研究

Simultaneous Treatment of Coking Waste Water and Heavy Metal Waste Water Using Microbial Fuel Cell

分别采用焦化废水和4种不同重金属废水作为阳极底物和阴极液,构建双室微生物燃料电池(MFC),考察其同步处理2种废水的产电性能及污染物处理效果。运行数据表明:以不同重金属离子(Cu^(2+),Cr^(2+),Cd^(2+)和Ni^(2+))废水作为阴极液的MFC装置的运行性能差别较大。以Cr^(2+)作为MFC装置阴极液时,系统运行性能最高,输出电压、功率密度、库伦效率、COD去除率及金属离子去除率分别为(455±12)m V,36.2 m W/m^(3),45.1%,(85.2±1.6)%和(68.9±1.8)%。

Four dual-chamber microbial fuel cells(MFC)were employed,using coking waste water and waste water containing four heavy metals as anode matrix and cathode electrolyte,respectively.The treatment efficiency and energy-producing capacity were estimated by continuous flow.The data obtained illustrated that there was significant difference in operation performance of MFC when using different waste waters containing heavy metal(Cu^(2+),Cr^(2+),Cd^(2+)and Ni^(2+)) as cathode electrolyte.The MFC with Cr^(2+) as cathode electrolyte presented the optimum operation performance and the output voltage,power density,coulomb efficiency,COD removal efficiency and heavy metal removal efficiency were determined to be(455±12)m V,36.2 m W/m^(3),45.1%,(85.2±1.6)%and(68.9±1.8)%,respectively.