NITROGEN REMOVING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a nitrogen removing apparatus capable of effectively changing a horizontal flow velocity component to a descending flow by the descending flow channel formed along a carrier separating screen. SOLUTION: In a nitrogen removing apparatus wherein a carrier separating screen 14 surrounding an outflow part 8 of treated water 7 is provided in an aerobic tank 2 holding nitrifying bacteria immobilized carriers 11 in a fluidized state and a descending flow channel 19 is formed on the upstream side of the carrier separating screen 14, an equalizing plate 20 is arranged to at least the upper portion in the descending flow channel 19 in an up-and-down direction to make it possible to convert the horizontal flow velocity component to a descending flow velocity component in the inflow portion of the descending flow channel 19 by the equalizing plate 20.