A falling film tubular photo-reactor with photon utilization and ease of mass transfer was employed for advanced oxidation processes of photolysis, UV/H 2 O 2 , UV/TiO 2 and UV/H 2 O 2 /TiO 2 . The removal of model pollutant, azo dye C.I. direct red 16 (DR16) was followed. Slurry solutions of titania nanoparticles were used. Obtained results revealed a pronounced reactor performance and the contribution of the falling film was monitored. Using the hybridized process, under the found optimum values of: H 2 O 2 concentration, nano titania dosage and pH, 95% decolorization and 55% aromatic degradation were achieved after 60min. Meanwhile, kinetics and the energy consumption per order were investigated.