Refractory petrochemical wastewater treatment by KSO assisted photocatalysis.

The KSO assisted photocatalytic system was applied for treating refractory petrochemical wastewater. Co-TiO/zeolite catalyst synthesized by sol-gel method was demonstrated to possess a good activity towards mineralization of the refractory petrochemical wastewater in the KSO assisted photocatalytic system. Orthogonal design was employed to optimize the reaction parameters, according to the results, KSO dosage was the most prominent impact factor.