Determination of the Fate of Dissolved Organic Nitrogen in the Three Wastewater Treatment Plants, Jordan

This research aimed to assess the composition of total dissolved nitrogen ‎‎(TDN) species, particularly dissolved organic nitrogen (DON), over the ‎traditional wastewater treatment operations in three biological nutrient ‎removal (BNR) wastewater treatment plants (WWTPs) in Jordan. It had been ‎found that the DON percentage was up to 30% of TDN within the effluent plant;‎which restricted the plant’s ability to eliminate nitrogen to minimal amounts. ‎Effluent DON levels from the three plants varied from 11.7 to 34.8 mg N/L and ‎would not fluctuate substantially, even if there seemed to be a substantial ‎difference inside influent organic nitrogen levels. The main transforming of ‎DON and biodegradable dissolved organic nitrogen (BDON‏(‏‎ along the treatment ‎train had been noticed in the aerobic method. More than 70% of effluent DON ‎was consisting of hydrophilic materials, which promote algal growth. The ‎research presented significant information for foreseeable future improving of ‎WWTPs or the choice of DON elimination techniques to satisfy additional ‎challenging nitrogen release limits.