Valter - Reverse Osmosis Systems (RO)

Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to separate ions, unwanted molecules, and larger particles from polluted water or seawater. In reverse osmosis, the pressure used is to overcome the osmotic pressure. Reverse osmosis can remove many types of dissolved and suspended chemical species from water, as well as biological (especially bacteria), and is used in industrial processes and in the production of drinking water. The result is that the inlet water into the reverse osmosis system is retained on the membrane side under pressure and pure water then seeps through the membranes to pass to the other side. In order to be “selective”, this membrane should not allow large molecules or ions to pass through the “hole” pores, but rather allow smaller components of the solution (such as solvent molecules, ie water, H2O) to pass freely.