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利用芦苇构建单室湿地阴极型升流式微生物燃料电池(microbial fuel cell-constructed wetland,MFC-CW),研究阴极基质材料的种类、粒径及进水COD浓度对MFC-CW的产电和污水净化性能的影响。结果表明,阳极基质材料为2~4 mm颗粒活性炭,阴极基质材料为4~8 mm颗粒石墨时,电池性能最佳,最大输出电压为318 m V(外电阻为1 000Ω),最大功率密度达到0.197 W/m~3,库伦效率为2.1%。阴极基质材料的种类和粒径对MFC-CW的污水净化性能的影响较小,COD去除率均在80%左右。进水COD浓度是影响MFC-CW运行性能的一项重要参数,系统输出功率密度及COD去除率均随进水COD浓度的增加呈现先上升后下降的趋势,当进水COD浓度在200~300 mg/L时系统整体运行性能最佳。
MFC-CW was used to construct single-chamber wetland MFC-CW. The effects of cathode matrix material type, particle size and influent COD concentration on the production and effluent of MFC-CW Purification performance impact. The results showed that the best cell performance was obtained when the anode matrix material was 2 ~ 4 mm granular activated carbon and the cathode matrix material was 4 ~ 8 mm granular graphite. The maximum output voltage was 318 mV (the external resistance was 1 000 Ω) and the maximum power density reached 0.197 W / m ~ 3, the coulomb efficiency is 2.1%. The type and particle size of the cathode matrix material have little effect on the wastewater purification performance of MFC-CW, and the COD removal rate is about 80%. The influent COD concentration is an important parameter that affects the operation performance of MFC-CW. The system output power density and COD removal rate both increase and then decrease with the influent COD concentration increasing. When influent COD concentration is between 200 and 300 mg / L system best overall performance.