When explaining something like how reverse osmosis water filters work, it is best to start with a definition. First of all, the definition of osmosis is the "movement of a solvent through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane."
Semipermeable means that some things will pass through and some will not. When the osmotic pressure creates a higher level in one area of the tank than another, then the system has completed its cycle. Reverse osmosis however, uses the permeable filter as a fine tool to separate salty water from drinking water. Once the membrane is in place, pressure is applied and a slow process begins, but it works to create some great tasting drinking water.
This process is normally used for obtaining drinking water from seawater, since it removes the salt as well as other contaminants. Because the reverse osmosis process uses such a fine filter, it is an excellent way to remove all the tiny little particles that the human eye cannot see. Its efficiency is usually dependent on the pressure and solute concentration however, and if the water flux rate is not the right amount, then the whole process may be off slightly.
This process was originally created in 1748. For the next two centuries, this process was completed only in laboratories. However, by 2001, there was more than 15,000 osmosis plants in operation worldwide. Since its inception, its use has grown to also include the purification of waste water and rain water.
The food industry has also found this to be a very helpful process in dealing with concentrated fruit juices and dairy liquids. One example of this is the maple syrup production process, where reverse osmosis removes water from the sap. Automatic car washes use this process to help lessen the job the car dryers have to perform.
Which materials can be filtered by this process? Things such as radioactive materials, chlorine, pesticides, fertilizers and microorganisms, like bacterial parasites. It can also help remove water-borne diseases that might be caused through environmental factors. Fluoride and heavy metals can also be removed before the water is ingested, preventing contamination in our bodies.
Reverse osmosis water filters can benefit your family in several ways, and the original investment is well worth it. They run efficiently with running costs that are reasonable and they offer very effective filtration. In fact, some minerals may need to be re-introduced into your family's diet because the filtration is so effective at removing all the minerals from the drinking water source.