Denitrification is the conversion of nitrate to gaseous nitrogen. This process is also referred to as removal of nutrients. The advantage of denitrification is that it reduces the amount of oxygen required for the digestion of organic compounds in the aeration basin.

Marel Water Treatment offers two methods of denitrification:

Simultaneous denitrification

With simultaneous denitrification, the aeration in the aeration tank will be interrupted to allow the denitrification process to take place. This allows the use of a single combined basin.

Parallel denitrification

To make parallel denitrification possible, the water is first transferred to another location. This may be another basin or a different zone in the same basin. The advantage of this system is that continuous discharge is possible and that the highest possible reduction of nitrogen can be achieved. In addition, it allows for reducing the investment in the aeration capacity.