What is the industrial RO Plant An industrial RO (reverse osmosis) plant is a water treatment system that uses the process of reverse osmosis to remove impurities and contaminants from water. Reverse osmosis is a technology that uses a semipermeable membrane to separate dissolved solids and other impurities from water, producing pure water that is suitable for a variety of industrial applications. Industrial RO plants are used in a wide range of industries, including power generation, pharmaceuticals, food and beverage, chemical processing, and many others. They are typically used to purify water for use in manufacturing processes, as well as for drinking water and other applications.