Actuators monitoring system for real-time control of nitrification-denitrification via nitrite on long term operation

- We developed a real time control using closed loop control of pH and oxygen.
- The strategy used actuators as control parameter instead of pH and oxygen.
- A validation for 220 days, at 50-600 mg N/L and C/N < 2, was carried out.
- The actuators profiles enabled to cut the aeration opportunely.
- The anoxic time was diminished up to 8% of the total cycle time.