One-year operation of 1000-L modularized microbial fuel cell for municipal wastewater treatment

WATER RESEARCH

卷:141

Article

Liang, Peng¹  Duan, Rui¹  Jiang, Yong¹  Zhang, Xiaoyuan¹  Qiu, Yong¹  Huang, Xia¹ 

[1] Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Sch Environm, Beijing 100084, Peoples R China

关键词: Microbial fuel cell;    Municipal wastewater;    Long-term operation;    Stacked modules;    Power generation;   

DOI  :  10.1016/j.watres.2018.04.066

来源: Elsevier

【 摘 要 】

This study constructed a 1000 L modularized MFC system, the largest volume so far, to treat practical municipal wastewater. This MFC system was operated under two different water flow connections in two municipal wastewater treatment plants (MWTP) for more than one year to test their treating abilities for wastewater with both low (average 80 mg L-1) and high initial COD concentration (average 250 mg L-1). The COD concentration in the effluent from the MFC system remained below 50 mg L-1 with a removal rate of 70-90%, which stably met the level A of the first class in discharge standard of pollutants for MWTP of China. A maximum power density of 125 W m(-3) (7.58 W m(-2)) was generated when the MFC system was fed with artificial wastewater, while it lay in a range of 7-60 W m(-3) (0.42-3.64 W m(-2)) when treating municipal wastewater. The energy recovery of 0.033 +/- 0.005 kWh per m(3) of municipal wastewater was achieved, with a hydraulic retention time (HRT) of 2 h. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

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