双室MFC对电镀和糖蜜废水的处理及其产电性能的研究

Study on Treatment of Electroplating Wastewater by Double-chamber Microbial Fuel Cell and Its Electricity Production Performance

本实验构建了一种以电镀废水为阴极液的双室微生物燃料电池(MFC),分别研究含有相同浓度重金属辞、铜、银离子的电镀废水对MFC的产电性能、COD去除率、重金属去除率的影响。结果表明:当其他条件相同时,以含银离子的电镀废水为阴极液的MFC的综合性能最好,不仅最大功率密度达到了23.2 mW/m^2,且COD去除率达到了72%、重金属离子去除率达到了73%,皆远高于以含辞离子和铜离子的电镀废水为阴极液的MFC。而以含锌离子的电镀废水为阴极液的MFC其产电性能是三者中最不理想的,功率密度仅有2.0×10^-6mW/m^2。以含铜离子的电镀废水为阴极液的MFC其功率密度达到了14.0 mW/m^2。

In this experiment,a dual-chamber microbial fuel cell(MFC)with electroplating wastewater as catholyte was constructed to study the electricity production performance,COD removal rate and heavy metal removal of electroplating wastewater containing the same concentration of heavy metal zinc,copper and silver ions.The impact of the rate.The results show that when other conditions are the same,the comprehensive performance of MFC with electroplating wastewater containing silver ions as the catholyte is the best,not only the maximum power density reaches 23.2 mW/m^2,but also the COD removal rate reaches 72%,heavy metal ion removal.The rate reached 73%,which is much higher than that of the electroplating wastewater containing zinc ions and copper ions as the catholyte.The MFC with zinc ion-containing electroplating wastewater as the catholyte has the most unsatisfactory power generation performance,and the power density is only 2.0 × 10^-6 mW/m^2.The MFC of the electroplating wastewater containing copper ions as the catholyte has a power density of 14.0 mW/m^2.