Implementation of partial nitrification in wastewater treatment systems by modifications in operational strategies– a review

This review aims to comprehensively summarise and analyze different operational strategies utilised to achieve partial nitrification in wastewater treatment processes. Partial nitrification, a promising technology for sustainable wastewater treatment, selectively converts ammonium to nitrite instead of nitrate, potentially reducing the required oxygen and carbon for nitrogen removal. This process is influenced and controlled by several operational parameters, both directly and indirectly. The review focuses on the quantitative evaluation of these parameters, extracting optimal operating values for both scientific researchers and wastewater treatment operators. To improve the practical application of the data, the information is extracted exclusively for synthetic and real wastewater samples, which removes the matrix effect on the reported data. The review examines both intrinsic and extrinsic factors that affect the process. The review concludes by highlighting the importance of the reviewed operational parameters in the engineering design of partial nitrification processes. Overall, this review provides a valuable reference for researchers and operators looking to improve the effectiveness and sustainability of partial nitrification in wastewater treatment.