Oxidative degradation of COD in a Petrochemical facility using Ozone-based advanced oxidation - July 2015

The aim of this study was to investigate the use of ozone-based advanced oxidation processes for the oxidative destruction of COD in a petrochemical facility. Several AOP experiments were carried out in order to select and optimise the successful treatment option. A LABO3-AOP pilot unit was used where filtered waste water (COD 1250 ppm) was circulated throughout the AOP reactor and ozone & H2O2 injected at various dose rates using Venturi-type injectors. Treated samples were withdrawn from the test unit for COD analysis. The amount of ozone and H2O2 used in the COD oxidative degradation process were also monitored. ***Results analysis***: The results show the COD reduction trend based on laboratory test results. The results indicate that by simply increasing the ozone & H2O2 dose rates and reaction time, we can easily achieve less than 100 ppm COD as requested by the customer. Extended tests show that COD of less than 60 ppm can be achieved.