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为了降低废水中重金属的含量,研究了空气阴极单室微生物燃料电池对模拟废水中Cu(Ⅱ)的去除效果。考察了铜的初始浓度、初始pH值和外加电阻等单因子的影响,从Cu(Ⅱ)去除率及电压输出等方面进行考核,确定最佳去除条件:SMFC的最大耐受浓度为12.5 mg·L~(-1),最适Cu(Ⅱ)还原去除的初始pH值为6.0和低电阻500Ω。SMFC出水Cu(Ⅱ)浓度低于0.5 mg·L~(-1),达到《城镇污水处理厂污染物排放标准》(GB18918-2002)中总铜排放标准,拓展了生物电化学系统系统在去除重金属离子废水方面的应用。
In order to reduce the content of heavy metals in wastewater, the removal efficiency of Cu (Ⅱ) in simulated wastewater by air cathode single-chamber microbial fuel cell was studied. The effects of single factor such as initial copper concentration, initial pH value and applied resistance were investigated. The optimum removal conditions were determined from the aspects of Cu (Ⅱ) removal rate and voltage output. The maximum tolerated concentration of SMFC was 12.5 mg · L -1, and the optimal pH value for Cu (Ⅱ) reduction and removal was 6.0 and 500Ω. The concentration of Cu (Ⅱ) in effluent of SMFC is less than 0.5 mg · L -1, which meets the total copper emission standard of “Emission Standard of Pollutants for Municipal Wastewater Treatment Plant” (GB18918-2002), and the bioelectrochemical system system is expanded Heavy metal ion wastewater applications.