Comparison between FBBR and MBBR vs MBR
A MBR (Membrane Bio Reactor) plant uses biological degradation and physical separation. It is a filtration facility with an upstream activated sludge buffer. The sludge production is lower compared to FBBR (Fixed Bed Bio Reactor) and MBBR (Mixed Bed Bio Reactor), having a bacteria concentration 4-5 times higher (those and other impurities are hold back by the membrane). On top of that, there is no sludge settlement required, therefore the needed space is lower.