METHOD FOR TREATING AN EFFLUENT USING SIMULTANEOUS NITRIFICATION/DENITRIFICATION IN A BIOFILTER

摘要

The invention concerns biological treatment bynitrification/denitrification of an effluent comprising a step which consistsinpassing said effluent through a biological reactor with micro-organismsfixed on at least a granular material bed provided with means supplyingoxygen. The invention is characterised in that it consists in: aeratingsubstantially continuously said granular material bed assembly;measuring at least a parameter representing the oxygen consumptionof said fixed micro-organisms and a step which consists in regulatingthe functioning of said oxygen supply means according to the resultsof said parameter measuring step and a set value thereof, said methodenabling substantially simultaneous nitrification/denitrification of saideffluent.