1. Generation and characteristics of mineral oils and hydrocarbons wastewater from petroleum industries 2. Environmental effects and human health challenges originated from oily wastewaters 3. Challenges of industries in dealing with oily wastewaters release and treatments 4. Primary treatment of oily wastewaters by floating and settling down separation methods 5. Physical treatment of oily wastewater by absorption and filtration techniques 6. Adsorption enhanced processes for treatment of oily wastewaters 7. Dissolved, induced and nozzle air flotation techniques for oily wastewater treatment 8. Coagulation/flocculation and Electro-Coagulation methods for oily wastewater treatment 9. Oily wastewater treatment by membrane assisted technologies 10. Biological processes and the use of microorganisms in oily wastewater treatment 11. Oily wastewater treatment by oxidation processes and electrochemical catalysis 12. Utilization of photocatalytic degradation in treatment of oily wastewaters 13. Remediation of vegetable oily ballast wastewater 14. Hybrid/integrated treatment technologies for oily wastewater treatment 15. Hydrocarbons removal from water by carbon-based materials, macroalgae biomass and derived composites