Development of the energy efficient wastewater treatment technology by stacked microbial fuel cells

为了建立高效的有机废水处理技术和电能的回收，开发了由两个MFCs串联而成的叠层微生物燃料电池（StMFCs）。采用含糖废水（0.5 gCOD/L）连续流实验，评价stmfc的工艺性能。通过MFC串联稳定各阳极槽内的有机物浓度和组成，stmfc在水力停留时间（HRT）为13小时时达到了良好的COD去除率（79%）和足够的发电量（0.55 W/m3-每个MFC）。此外，在每个阳极室中也证实了发电细菌的增殖，如Geobactor属和Rhodobacter属。在电路串联中观察到整个系统的电压值增加，在并联中观察到整个系统的电流值增加。

For the establishment of both efficient organic wastewater treatment technology and recovery of electric energy, the stacked microbial fuel cells (StMFCs) by series connection of two MFCs were developed. Continuous flow experiment feeding with sugar containing wastewater (0.5 gCOD/L) was conducted to evaluate process performance of the StMFCs. Both organic concentration and composition in each anode tank was stabilized by serial connection of MFCs, StMFCs achieved good COD removal (79%) and sufficient electric generation (0.55 W/m3- each MFC) at HRT (Hydraulic retention time) of 13 hours. Also, proliferation of electricity-generating bacteria, such as genus Geobactor and genus Rhodobacter, are confirmed in each anode chamber. The increase in observed voltage value for the entire system in the series connection of the electric circuit, the increase of the observed current value for the entire system was observed in a parallel connection.