During reverse osmosis, water is forced via adequate pressure to move from a stronger saline solution to a weaker one through a semi-permeable membrane. Since salt molecules are larger than water molecules, the said selective membrane prevents salt particles from passing. The end product on both sides of the membrane would be desalinated water on one and a highly concentrated saline solution on the other.
Aside from turning salty seawater into potable water, reverse osmosis also works well in treating brackish water. Brackish or briny water has higher saline levels than freshwater but not higher than saltwater. It is the kind of water commonly found in wells and creeks.
Reverse osmosis can filter specific minerals or chemicals from a particular water source. In effect, the process does serve two purposes when it comes to treating brackish water: (1) desalinization and (2) filtration of minerals like lead, manganese, iron, and calcium—depending on its size. Reverse osmosis can also remove certain potentially harmful chemical contaminants like fluoride (not to be mistaken for the one found in toothpaste).
There are water treatment product manufacturers that provide brackish water reverse osmosis systems for commercial and industrial use, whether for small or large plants. These treatment systems can provide around 1,500 to over 150,000 gallons per day, depending on the model. Whatever the demand may be, with a system engineered and made of high-quality components, a brackish water reverse osmosis system can and will deliver.