Reverse Osmosis is a water purification technology that uses a semipermeable membrane to remove molecules, ions and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure that is driven by chemical potential differences of the solvent. Reverse osmosis can remove many types of dissolved and suspended species from water; including bacteria. It is used in both the production of portable water and industrial processes. This results in the solute being retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side.
The Process of Reverse Osmosis Water Treatment
Osmosis is a natural process. When a semipermeable membrane separates two solutions that have different concentrations of a solute, the solvent has a tendency to move from low to high solute concentrations for chemical potential equilibrium. Household drinking water purification systems that include a reverse osmosis process are commonly used to improve drinking water and for cooking all over the world. These systems include a number of steps:
-sediment filters are used to trap particles, including calcium carbonate and rust
-an activated carbon filter is used to trap chlorine and organic chemicals
-reverse osmosis filters
-somtimes an ultraviolet lamp for sterilizing any microbes that may escape filtering by the reverse osmosis membrane
-nano materials and membranes
Benefits of a Reverse Osmosis Water Treatment Systems
Reverse osmosis technology has the ability to remove 95 to 99 percent of total dissolved solids as well as taste and odor. There are fewer contaminants in water treated with reverse osmosis water compared to common tap water and it will remove lead. Lead can increase blood pressure, reduced fertility and nerve damage. Lead toxicity can also cause brain damage and anemia in children. Reverse osmosis systems can also filter out parasites such as cryptosporidium, which is commonly found if lakes and rivers. Cryptosporidium infections can lead to fever, stomach cramps and diarrhea. When directly compared to each other in a blind taste test, reverse osmosis is chosen as better tasting, according to the National Rural Water Association. Lead, iron, nitrates, sulfur-based compounds and various chemical residues often make tap water unpalatable. Reverse osmosis removes these contaminants and makes water taste better. Having your drinking water cleansed with reverse osmosis will save you money compared to buying bottled drinking water because bottled water is expensive and the disposable bottles are wasteful. Reverse osmosis systems produce delicious drinking water for pennies per gallon and it’s convenient to have it right from your kitchen faucet. If drinking water tastes better with reverse osmosis, then food cooked with it will taste better too. Many restaurants now use reverse osmosis filtered water in their cooking. Water is the healthiest drink for our bodies and many families have found that after installing a reverse osmosis drinking water system has had them turning to drinking water rather than sugary drinks and sodas.