Treatment of wastewater generated by urea production

After years of operation, it has been recognized that current urea production technology can be improved at several points, one being wastewater treatment. This work is aimed at upgrading economical and ecological aspects of this technological segment for implementation into the existing plant.Current status of the urea plant has been analysed, a computer simulation developed based on plant's design data and real process parameters, and a solution for reduction of environmental impact proposed. Influence of key process parameters on the concentration of ammonium and urea at the outlet of wastewater treatment section was analysed.