Coupling microbial fuel cells and anaerobic fluidized bed membrane bioreactors for effective and energy efficient wastewater treatment
Microbial fuel cells (MFCs) have the dual advantages of wastewater treatment and electricity production,but they optimally produce effluent chemical oxygen demand (COD) concentrations greater than those typically suitable for discharge into receiving waters.However,coupling MFCs to anaerobic fluidized bed membrane bioreactors (AFMBRs) can produce an effluent of high quality,with a low COD as well as high water clarity due to low concentrations of suspended solids.The main aspects of the MFC design are: closely spaced electrodes,compact reactors,the use of non-precious materials,and stabile performance over time.Multi-module MFCs operated at a hydraulic retention time of 4 h removed 52% of the COD.For AFMBRs,operation must minimize conditions that avoid rapid membrane fouling,by proper acclimation of the biofilm on the fluidized particles (activated carbon),and by feeding a low influent COD as the percent COD removal is constant.AFMBRs operated with influent CODs of 96-143 mg/L removed 68% of the COD,producing effluents < 60 mg/L of COD.Together,these two processes (MFCs and AFMBRs) can achieve near energy neutral wastewater treatment while producing a high quality effluent suitable for many water reuse applications.
Anaerobic treatment bioelectricity exoelectrogenic microorganisms fluidized bed bioreactor membrane bioreactor microbial fuel cell
Bruce E.Logan KyoungYeol Kim
Department of Civil & Environmental Engineering, Penn State University, University Park, PA 16802, USA
国际会议
The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)
北京
英文
9-12
2017-10-17（万方平台首次上网日期，不代表论文的发表时间）