Water is one of the most important elements on this planet and without it, we would only live a few short days. Our bodies are made up of roughly two-thirds of H2O and to keep a healthy balance, we need to consume 2.4 liters of water each day. It comes to no surprise that new ways are constantly being found in order to provide us with more clean, pure water to nourish ourselves. In order to remove many of the harmful impurities from our water, the use of water filters is a solution to this problem. How important are water filters you may ask? Let’s take a closer look at what a water filter is.
How Filters Work
Water filters use two different techniques in the removal of dirt and debris. The first is physical filtration in which water is strained by a physical barrier such as a thin gauze or fine textile membrane to remove the larger particles. The second method is done thorough chemical filtration, which involves water passing through an active material, such as carbon, that removes impurities as they pass through chemically. There are 4 primary methods used for water filters that use a combination of physical and chemical filtration:
Activated Carbon Filters
This type of filter is the most common and popular of the options available that are based on charcoal. Charcoal is a form of Carbon that is very porous because it has a big internal surface area that can trap foreign particles. Larger contaminants are stuck on the outside, thus being removed from the water. Carbon can also act as a magnet for items such as lead and VOCs that continue to remove particles internally as water passes through the filter. On the chemical aspect, chemicals like Chlorine are removed during a chemical reaction when water is in contact with Carbon. The main disadvantage of this type of filter is after time it will get clogged with impurities and need to be replaced, which can add additional costs down the road.
Filtration that removes contaminants by water pressure to force tap water through a semipermeable membrane is called Reverse Osmosis. The membrane is an effective, very fine filter that allows the water to pass through but the contaminants like Lead, Mercury, and Iron stay behind. The downside is certain items such as some pesticides, solvents, and metals like Chlorine and Radon can not be removed with Reverse Osmosis.
A natural option for filtration can be done with the simple process of steam distillation that involves heating water to boiling and then cooling the steam to remove the contaminants. Most contaminants have a higher boiling point than water which is why they are left behind when the water becomes steam. The steam is collected and transformed back to water in a separate container. The disadvantage to this type of filtration is some contaminants such as volatile organic compounds (VOCs) boil at a lower temperature than water and they evaporate with the steam and can remove beneficial minerals in natural water during the filtration process.
This filter is very good at softening hard water by removing limescale. The process is done with chemical filtration method by releasing ions, like sodium, and exchange them for unwanted ions like heavy metals found in your water. The result is better-tasting water, however, the sodium is simply another form of contaminant, so the ion exchange doesn’t exactly make the water “pure”. This option is not the best for people on low-sodium diets. The second disadvantage of ion-exchange filtration is that it will need to recharge the filters occasionally with more sodium ions by adding a certain type of salt.
The experts at Reynolds Water Conditioning have a solution to your homes unique water quality needs including: arsenic, bacteria, chlorine, rotten egg smell, fluoride, hard water, iron, lead, acid, tannins, radon, and more. More information on our water treatment solutions including water softeners and conditioners, water filtration and purification, reverse osmosis drinking water, and iron & odor removal can be found online at https://reynoldswater.com.