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Performance of anaerobic fluidized membrane bioreactors using effluents of microbial fuel cells treating domestic wastewater
Ist Teil von
Bioresource technology, 2016-05, Vol.208, p.58-63
Ort / Verlag
England: Elsevier Ltd
Erscheinungsjahr
2016
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
•MFC–AFMBR combined process was operated over 112days treating domestic wastewater.•Impact of HRTs and organic loadings on performance of the AFMBR was evaluated.•COD removal efficiency of the AFMBR was not affected by variation of HRTs.•Higher effluent CODs from the AFMBR resulted from a higher organic loading rate.•TMP could be maintained under 0.18bar without membrane cleaning over 112days.
Anaerobic fluidized membrane bioreactors (AFMBRs) have been mainly developed as a post-treatment process to produce high quality effluent with very low energy consumption. The performance of an AFMBR was examined using the effluent from a microbial fuel cell (MFC) treating domestic wastewater, as a function of AFMBR hydraulic retention times (HRTs) and organic matter loading rates. The MFC–AFMBR achieved 89±3% removal of the chemical oxygen demand (COD), with an effluent of 36±6mg-COD/L over 112days operation. The AFMBR had very stable operation, with no significant changes in COD removal efficiencies, for HRTs ranging from 1.2 to 3.8h, although the effluent COD concentration increased with organic loading. Transmembrane pressure (TMP) was low, and could be maintained below 0.12bar through solids removal. This study proved that the AFMBR could be operated with a short HRT but a low COD loading rate was required to achieve low effluent COD.