DeAmmon^® is nitrogen-reduction process developed for nitrogen removal from high concentrated streams such as industrial waste water and sludge dewatering supernatant from digested wastewater sludge.

The great advantages of the DeAmmon^® process compared to the conventional nitrogen removal are the significantly lower oxygen consumption and conversion to gaseous nitrogen without organic carbon.

The DeAmmon^® process can easily be installed in existing facilities.

The DeAmmon^® process can be divided into two stages; during the first stage ammonia is nitrified to nitrite with oxygen (NITRITATION), while in the second stage ammonia is oxidized with nitrite to gaseous nitrogen (DEAMMONIFICATION).

Following conditions are of importance for the DeAmmon^® process:
- Wastewater temperature above 20 °C
- Ammonia concentration higher than 300 mg/l
- High sludge age.