Before buying any type of water filter for your home, whether it is a water tank, purifier, or even a water cooler purchased from a store, you should first understand the various filtration methods that may occur before purification. Some filtration methods are better at removing particles and contaminants than others. The following is a quick overview of each water filtration methods.
1. Activated carbon filtration method
Carbon removes contaminants by chemically bonding to the water that is poured into the system.Some can only effectively remove chlorine and only improve the taste and odor, while others can remove more harmful pollutants, such as mercury and lead. It is important to note that carbon filters cannot remove inorganic contaminants such as nitrate, fluoride and arsenic. Carbon filters are usually sold to consumers in bulk or granular form.
2. Distillation filtration method
Distillation is one of the oldest water filtration methods. It evaporates water by heating to extremely high temperatures. The vapor is then condensed back into potable liquid water. Distillation removes high boiling minerals, microorganisms and chemicals. These filters cannot remove chlorine and many other volatile organic chemicals.
3. Deionization filtration method
Deionization filters promote ion exchange in water to remove salts and other charged ions. If the contaminants lack charge, they can be removed through these filters. These filters will not remove organisms such as viruses and bacteria.
4. Ion exchange filtration method
Ion exchange technology uses resins to replace harmful ions with less harmful ones. Ion exchange usually softens water because it has the ability to replace calcium and magnesium with sodium. In order to make these filters work for a long time, the resin must be regularly "charged" with harmless replacement ions.
5.Reverse osmosis filtration method
Reverse osmosis prevents larger and more harmful molecules from entering by passing water through a semi-permeable membrane. Because this process can only block molecules larger than water, it cannot remove contaminants with larger molecules (such as chlorine). Reverse osmosis systems can remove more pollutants than carbon, and thus have become a popular choice for many consumers. These filters consume far more water than they produce, so they are most suitable for household use.
Before buying any type of water filter for your home whether it is a water tank purifier or even a water cooler purchased from a store you should first understand the various filtration methods that may occur before purification. Some filtration methods a