Coke oven wastewater contains phenolics, aromatic hydrocarbons along with cyanide.
Anaerobic–aerobic–anoxic bioreactors and photocatalysis was used for CWW treatment.
Real CWW without pretreatment adversely affected the reactor performance.
COD removal of 96.2% was achieved in the hybrid system with real CWW.
The hybrid system was able to achieve discharge standards with real CWW.