METHOD FOR TREATING WATER IN A SYSTEM COMPRISING AT LEAST ONE DISCONTINUOUS SEQUENTIAL REACTOR AND A BIOLOGICAL FILM REACTOR WITH A MOBILE BED.

摘要

The present invention relates to a method for the biological treatment of carbon, nitrogen and optionally water phosphorus in a reactor system (1) comprising a batch sequential reactor (SBR) (2) and a biofilm reactor. mobile (MBBR) (3). The method comprises a step of filling (10) said SBR reactor (2) with a water to be treated (5), an anoxic / aerobic biological treatment step (20) in said reactor system (1) and an evacuation step (30) of said SBR reactor (2) of treated water (35). The anoxic / aerobic biological treatment step (20) comprises: a biological treatment under predominantly anoxic conditions (210) in the SBR reactor (2) producing a first effluent (215), a biological treatment under aerobic conditions (220) in the MBBR reactor (3), producing a second effluent (225) and a continuous recirculation of the first and second effluents. The present invention also relates to a corresponding installation.