Reverse osmosis systems, also known as reverse osmosis plants (RO systems)
are water filtration systems based on the principle of reverse osmosis. Osmosis is a physical phenomenon in which a solvent (usually water) diffuses through a semi-permeable membrane to equalize a concentration gradient. In reverse osmosis, this process is reversed to remove contaminants from the water.A typical reverse osmosis system consists of several components:
1. Pre-filtration:
This step removes coarse contaminants such as sand, sludge, rust, and sediment from the raw water. This helps extend the service life of the reverse osmosis membrane.
2. The reverse osmosis membrane:
This is the heart of the system. The membrane is a semi-permeable barrier that only allows water molecules to pass through while retaining contaminants such as salts, heavy metals, bacteria, and organic substances.
3. A pressure vessel:
Water is forced against the reverse osmosis membrane under pressure to initiate the osmosis process.
4. A drain for rejected water:
While pure water flows through the membrane and is used as drinking water or for other applications, there is also rejected water that contains the retained contaminants and is drained away.
5. A storage tank or no tank:
The purified water is stored in a tank so it is available when needed. Tankless reverse osmosis systems are much safer than systems with a storage tank for health reasons. Germs and bacteria can form in the storage tank!
Reverse osmosis systems are often used for drinking water filtration in homes, offices, and other environments to provide clean, drinkable water.
They are able to remove many contaminants very effectively and offer high water quality.
