Patent ID: 7390400

Claim:
A denitrification reactor with a culture fixed to an organized plastic-type support, combined with an installation for the nitrification and elimination of the carbon-based pollution, said reactor being supplied with a mixture of the raw effluent to be treated and of the effluent originating from the installation for the nitrification and elimination of the carbon-based pollution, characterized in that it comprises: two denitrification compartments ( 3 , 4 ) provided with an organized plastic-type lining ( 8 ), these compartments, arranged in parallel, and having a means for supplying the mixture of effluents comprising a rotary arm which alternately supplies said effluents at the surface of each of said compartments such that one is in the filling phase (denitrification and self cleaning-out of the excess biomass) while the other is in the emptying phase (denitrification and drainage of the excess biomass); a drainage compartment ( 6 ) for receiving the denitrified effluent originating from one or other of said denitrification compartments; and means ( 19 , 21 ) for recirculating the denitrified effluent from the drainage compartment ( 6 ) to the installation ( 2 ) for the nitrification and elimination of the carbon-based pollution.