Okan, O.L., Ugonabor, V.I., Onu, C.E. and Chinedu, J.U. 2022. PPLICATION OF TRICKLING FILTER WITH HYBRID BIOFILM SUPPORT MEDIA IN THE TREATMENT OF PETROLEUM EFFLUENT. LAUTECH Journal of Engineering and Technology. 16, 2 (Jun. 2022), 94–105.