These different forms constitute the total nitrogen content.
Organic nitrogen is converted to ammonia in the first step of the nitrogen cycle.
This process is commonly referred to as nitrification. An oxic environment must be maintained for a sufficient period of time to promote nitrification. At the Water Reclamation Facility, oxic conditions are maintained by a number of rotor surface aerators. Biological nitrification occurs, producing nitrite in an intermediate step and ultimately producing nitrate. This process is commonly referred to as denitrification.