Membrane bioreactors allows to keep a higher concentration of biomass in the reactor. Thus, higher loads can be treated with a smaller volume.
The cellular retention time of all types of bacteria present in the waste water may be controlled more efficiently, thus processes such nitrification-denitrification and biomass adaptation to specific industrial wastewater are achieved more easily.
Further more, the smaller the pore size of the membranes, the higher range of organic pollutants will be efficiently retained in the system allowing for a higher adaptation of the biomass to treat a wider range of recalcitrant organics such as some pesticides, and pharmaceuticals.
MBR technology is the most suitable wastewater treatment technology for industrial waste water treatment, specially when:
MBR is a technology suitable for wastewater regeneration as the permeate can be reused in irrigation as it is obtained already disinfected. Pathogens are removed by size exclusion.
The UF membranes will retain bacteria and most viruses. Commercial UF membranes for MBR applications range in pore size between 0,02 micros and 0,1 microns.