A METHOD AND A SYSTEM FOR WASTEWATER NITROGEN REMOVAL

摘要

The method comprises performing a partial nitritation of wastewater in a biofilm reactor, by means of performing a closed loop control for regulating the ammonium concentration within the biofilm reactor based on the ammonium concentration at the outlet of the biofilm reactor, and calculating and varying the value of an ammonium concentration setpoint of said closed control loop based on the nitrogen concentration at the outlet of or inside the biofilm reactor. The system is adapted to implement the method of the invention.