In refinery and petrochemical facilities, wastewater management is one of the industry's most complex environmental challenges. Complex wastewater compositions containing high COD loads, phenol compounds, hydrocarbons, and H₂S create situations in which biological treatment alone is insufficient. Resistant compounds such as phenol and benzene are not fully degraded in biological processes, making chemical oxidation necessary at this point.
Ozone-based advanced oxidation processes (AOP) effectively break down these resistant compounds and can be applied upstream or downstream of biological treatment. Ozone also offers an effective solution for H₂S and VOC-derived chimney odour control, minimising environmental complaints and regulatory penalty risk. OCS Ozone delivers the design and installation of high-capacity ozone systems suited to refinery scale.