In chemical industry facilities, process wastewater, chimney emissions, and workplace air quality are among the most strictly regulated areas under environmental legislation. High COD loads, phenols, cyanates, VOC compounds, and refractory organic contaminants (ROCs) cannot be fully removed by conventional biological treatment, making advanced oxidation necessary.
Process Wastewater: In chemical industry wastewater, ozone-based AOP (Advanced Oxidation Process) achieves over 95% removal of phenol and its derivatives while reducing total COD load by 70–90%. Ozone pre-treatment before biological treatment breaks down heavy organic load, improving biodegradation efficiency by 30–50%. Compliance with discharge standards under the Turkish Water Pollution Control Regulation and EU Water Framework Directive (2000/60/EC) becomes far more manageable with ozone integration.
VOC and Chimney Odour Control: VOCs, hydrogen sulphide, and organic solvent vapours released from chemical facility production lines threaten both worker health and environmental compliance. Ozone injected into chimney exhaust lines directly oxidises these compounds, achieving 70–95% reduction in odour intensity. Unlike chemical scrubber systems, ozone carries no secondary pollution risk; reverting to oxygen on its own, it generates no residual waste stream.
Process Water and Cooling Towers: In the chemical industry, biofilm and Legionella control in process cooling waters is critical for both production safety and worker health. Integrated into cooling tower water, ozone suppresses biofilm formation and reduces chlorine consumption by 70–90%.