The results of the life cycle assessment (LCA) of oil waste (OW) management and disposal of refineries are presented, which include environmental impacts beyond the implementation of the techniques themselves, but also the production of the necessary material (reagents, materials) and energy (electricity, fuel, steam). LCA demonstrated that the most significant impacts of oil-containing waste treatment and disposal methods are in the categories Ecotoxicity (for freshwater)" and "Human toxicity" (cancer and non-cancer diseases)" resulting from the burning of fossil fuels and the emission of heavy metals (zinc, copper, vanadium, cobalt, chromium, nickel and lead).