| abstract |
A process for biotreatment of a liquid mass, through contact with a biomass is characterized by the fact that the bioreactor in which the process is performed comprises a container holding a bed of biomass, means of supporting this bed, means of admitting the liquid mass for treatment, means of recirculating the liquid mass during treatment, means of extracting at least part of the treated liquid, and means of supplying oxygenating and emulsifying gas to the liquid mass before it comes into contact with the bacterial bed. |