An integrated 45 L pilot microbial fuel cell system at a full-scale wastewater treatment plant
An integrated 45 L pilot microbial fuel cell system at a full-scale wastewater treatment plant
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DOI：
10.1016/j.biortech.2016.06.052
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发表时间：
2016-10-01
影响因子：
11.4
通讯作者：
Wichern, Marc
中科院分区：
文献类型：
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作者：
Hiegemann, Heinz;Herzer, Daniel;Wichern, Marc
由4个单室无膜MFC组成的45-L中试MFC系统被集成到一个全规模污水处理厂(WWTP)中，并在实际条件下与初级澄清池的出水一起运行9个月，以确定稳定功率输出和最大基质能量回收(归一化能量回收，NER)的最佳运行策略。当水力停留时间为22h时，MFC的处理效果最好，COD、TSS和氮的去除效果分别为24%、40%和28%。平均NER为0.36kWh(El)/kg(COD，Deg)，库仑效率为24.8%。利用实验结果首次建立了具有集成MFC系统的整个污水处理厂的能量平衡。对模型污水处理厂的能量计算表明，由于剩余污泥产量减少而产生的能量节约和MFC的能量增益明显高于由于沼气产量减少而产生的能量损失。(C)2016爱思唯尔有限公司。保留所有权利。
A 45-L pilot MFC system, consisting of four single-chamber membraneless MFCs, was integrated into a full-scale wastewater treatment plant (WWTP) and operated under practical conditions with the effluent of the primary clarifier for nine months to identify an optimal operational strategy for stable power output and maximum substrate based energy recovery (Normalized Energy Recovery, NER). Best results with the MFC were obtained at a hydraulic retention time of 22 h with COD, TSS and nitrogen removal of 24%, 40% and 28%, respectively. Mean NER of 0.36 kWh(el)/kg(COD,deg) and coulombic efficiency of 24.8% were reached. Experimental results were used to set up the first described energy balance for a whole WWTP with an integrated MFC system. Energetic calculations of the model WWTP showed that energy savings due to reduced excess sludge production and energy gain of the MFC are significantly higher than the loss of energy due to reduced biogas production. (C) 2016 Elsevier Ltd. All rights reserved.