Effect of filtration flux on the development and operation of a dynamic membrane for anaerobic wastewater treatment

Single-stage versus two-stage anaerobic fluidized bed bioreactors in treating municipal wastewater: Performance, foulant characteristics, and microbial community

“…This hints that the formed fouling layers that were not removed by GAC scouring in the single-stage AFMBR could be readily removed by further physical cleaning. This observation provides a possibility to effectively control membrane fouling by additional physical cleaning protocols (such as periodically backwashing or flushing) or by improved GAC scouring efficiency (such as increasing GAC packing density and particle size [19,22]) during long-term operation of single-stage AFMBRs.…”

“…At a lower permeate flux, the foulants tended to form relatively loose cake layer, which could be removed by the scouring force induced by the fluidized GAC particles. On the contrary, at a higher permeate flux, the GAC scouring force might not be strong enough to remove the foulants trapped in the denser cake layer [19].…”

Impact of reactor configurations on the performance of a granular anaerobic membrane bioreactor for municipal wastewater treatment

“…Anaerobic membrane bioreactors (AnMBRs) have gained particular interest for municipal wastewater treatment in recent years due to its competitive advantages (i.e., bioenergy production, quality effluent, low sludge disposal, high loading capacity, nutrient recovery, footprint efficiency, lower energy requirements, and decentralized operation) over the conventional anaerobic systems and aerobic MBRs (Mnif et al, 2012;Galib et al, 2016;Pretel et al, 2016). However, membrane fouling has remained as one of the most challenging issues impeding the progress of AnMBRs (Sanguanpak et al, 2015;Huang et al, 2012;Saleem et al, 2016), especially with high biomass concentration in widely used conventional AnMBRs (C-AnMBRs).…”

“…In view of this concern, many researchers have devoted their efforts into developing various AnMBR configurations such as vibrating AnMBRs (V-AnMBRs) (Kola et al, 2014) Gas-lifting AnMBRs (Gl-AnMBRs) (Gimenez et al, 2012), anaerobic bio-entrapped membrane bioreactors (AnBEMRs) (Ng et al, 2014), anaerobic dynamic membrane bioreactors (AnDMBRs) (Saleem et al, 2016) and anaerobic membrane sponge bioreactors (AnMSBRs) (Kim et al, 2014) for sustainable fouling mitigation strategies. Granular anaerobic membrane bioreactor (G-AnMBR), a hybrid anaerobic biotechnology that incorporates the granular technology with membrane based separation, has offered a promising approach to the C-AnMBR in terms of fouling mitigation (Chen et al, 2016a).…”

Direct ultrafiltration with membranes applied to the carbon recovery from municipal wastewater

“…A schematic representation of DM for the up-concentration of municipal wastewater reported in literature with an optional coagulant dosage (red box 1) is shown in Figure 4. In recent years, the amount of research on DM for wastewater treatment has considerably increased, especially for aerobic and anaerobic processes, in order to substitute or improve MBR systems [80,81]. However, as far as the authors know, the use of DM as a tool for direct wastewater up-concentration for a forward carbon recovery from both water and solid streams has only been reported by Gong et al…”