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首页> 美国卫生研究院文献>Scientific Reports >A combined system of microbial fuel cell and intermittently aerated biological filter for energy self-sufficient wastewater treatment
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A combined system of microbial fuel cell and intermittently aerated biological filter for energy self-sufficient wastewater treatment

机译：微生物燃料电池和间歇曝气生物滤池的组合系统用于能源自给自足的废水处理

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Energy self-sufficiency is a highly desirable goal of sustainable wastewater treatment. Herein, a combined system of a microbial fuel cell and an intermittently aerated biological filter (MFC-IABF) was designed and operated in an energy self-sufficient manner. The system was fed with synthetic wastewater (COD = 1000 mg L−1) in continuous mode for more than 3 months at room temperature (~25 °C). Voltage output was increased to 5 ± 0.4 V using a capacitor-based circuit. The MFC produced electricity to power the pumping and aeration systems in IABF, concomitantly removing COD. The IABF operating under an intermittent aeration mode (aeration rate 1000 ± 80 mL h−1) removed the residual nutrients and improved the water quality at HRT = 7.2 h. This two-stage combined system obtained 93.9% SCOD removal and 91.7% TCOD removal (effluent SCOD = 61 mg L−1, TCOD = 82.8 mg L−1). Energy analysis indicated that the MFC unit produced sufficient energy (0.27 kWh m−3) to support the pumping system (0.014 kWh m−3) and aeration system (0.22 kWh m−3). These results demonstrated that the combined MFC-IABF system could be operated in an energy self-sufficient manner, resulting to high-quality effluent.
机译：能源自给自足是可持续废水处理的一个非常理想的目标。在此，设计并以能量自给自足的方式设计并运行微生物燃料电池和间歇充气生物滤池（MFC-IABF）的组合系统。该系统在室温（〜25°C）下以连续模式连续3个月供入合成废水（COD = 1000 mg L -1 ）。使用基于电容器的电路，电压输出增加到5±0.4V。 MFC产生电能为IABF中的泵送和曝气系统提供动力，同时去除了COD。 IABF在间歇曝气模式（曝气速率1000±80 mL h -1 ）下运行，在HRT = 7.2 h时去除了残留的养分并改善了水质。该两阶段组合系统获得了93.9％的SCOD去除和91.7％的TCOD去除（出水SCOD SC = 61 mg L -1 ，TCOD = 82.8 mg L -1 ）。能量分析表明，MFC装置产生了足够的能量（0.27 kWh m -3 ）以支持抽水系统（0.014 kWh m -3 ）和曝气系统（0.22 kWh m -3 ）。这些结果表明，组合式MFC-IABF系统可以以能量自给自足的方式运行，从而产生了高质量的废水。

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