双室微生物燃料电池处理有机废水与重金属废水性能研究

采用豆制品废水和中药废水分别作为阳极基质,含镉废水作为阴极电解液,构建连续流双室微生物燃料电池(MFC),考察其对有机废水与重金属废水的处理效果及产能性能。运行数据表明:豆制品废水组可实现最大输出电压和体积功率密度分别为(477±11)mV和(12.5±0.9)W/m,阳极对COD平均去除率为(85.5±2.8)%,阴极对镉离子去除率(84.6±3.8)%;中药废水组最大输出电压和体积功率密度分别为(375±9) m V和(8.7±0.5) W/m^3,阳极对COD平均去除率为(74.2±3.3)%,阴极对镉离子去除率(74.0±4.2)%。这表明MFC采用豆制品废水作为阳极基质具有更高的废水处理效果及产能性能,同时在同步处理有机废水及重金属废水具有一定的可行性。

Performance Study of Organic Wastewater and Heavy Metal Wastewater Treatment by Dual-chamber Microbial Fuel Cell

The dual-chamber microbial fuel cell(MFC) was structured, using soybean wastewater and herbal wastewater as anode matrix and cadmium containing wastewater as cathode electrolyte. The treatment efficiency and energy-producing capacity of MFC for organic wastewater and heavy metal wastewater were investigated. The operation data showed that, for soybean wastewater, the maximum output voltage and volumetric power density were determined to(477±11)mV and(12.5±0.9) W/m^3, respectively, the average COD removal efficiency of(85.5±2.8)% at the anode and cadmium removal efficiency of(84.6±3.8% at the cathode was achieved. For herbal wastewater, the maximum output voltage and volumetric power density were determined to(375±9) mV and(8.7±0.5) W/m^3,, respectively, the average COD removal efficiency of(74.2±3.3)% at the anode and cadmium removal efficiency of(74.0 ±4.2)% at the cathode was achieved. The abovementioned results indicated the MFC could present better wastewater treatment efficiency and energy-producing capacity, and the feasibility of synchronous treatment of organic matter wastewater and heavy mental wastewater by MFC.