Oily Water Posted on 11th December 201527th May 2021 by ThePD (The Project Definition) Oily Water is a waste water contaminated by oil that is oil and water mixture. Related Definitions in the Project: The Plant and Process Unit Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Substance and tagged offsite, oil, plant, waste, water. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.