The MBBR (Moving Bed Bio Reactor) technology allows the bacterial
colonies to grow adhered to a surface, thus generating a bio –
film. The microorganisms that grow under these conditions are more
resistant to the process alterations than in other biological
treatment types.
The microorganisms grow on plastic supports designed so that they
have a high internal surface. These plastic supports are suspended
and evenly distributed in the liquid phase. This kind of reactors
can operate with very high loads in order to treat both industrial
and civil effluents in reduced spaces; the amount of adhered
activated sludge is higher, therefore the purification capacity is
higher: 1 m3 of a typical packing gives from **0 to **0 m2 of
surface, and there are *2 g of biomass per m2, thus here are 6 kg
of biomass per m3.
The MBBR technology can be used in order to enhance existing
activated sludge treatment plants, where the amount of pollutants
(determined by the COD and BOD concentration) is the substrate for
the growth of the microorganisms on the bio – film, which degrade
the pollutants and therefore purify the water.
