Rand Tariq khalaf1 and Waleed M. Sh. Alabdraba 2026. Assessment of Advanced Treatment Techniques for COD Removal from Industrial Wastewater in Baiji Refinery Using Chemical Coagulation, Ozonation, and UV/O₃ Technology. Applied Chemical Engineering. 9, 2 (Apr. 2026), ACE-5858. DOI:https://doi.org/10.59429/ace.v9i2.5858.