Know About Various Kinds Of Filtration Technologies

Water filters come in a variety of types and styles. One factor that differentiates them from one another is the kind of water filtration method they use. Different water filtration technologies are- Distillation, Carbon Absorption, Microporous Basic Filtration, Reverse Osmosis and Ultraviolet Radiations.

Distillation is a process in which water is heated till it starts boiling. The water vapors thus formed are condensed in another vessel to generate pure water. The contaminants of water are left in the liquid vessel only. This method of water filtration is very common and old.

Distilled water tastes flat because it has lost its dissolved oxygen. The process is not effective against the chemicals which have a boiling point below that of water. Volatile substances such as ammonia are carried over into the condensation chamber. Most distillers are slow and require large amounts of energy and water.

Carbon filters are highly efficient in cleaning water and are not so expensive. The carbon layer in these filters absorbs a lot of impurities, organic chemicals, pesticides and allows only water to go through it. GAC (granular activated carbon) is considered to be very efficient in removing radon. These filters come in wide range of sizes and designs.

In a microporous filtration system, water goes through three different layers of filtration- depth layer, screen layer and surface layer. The first layer is depth layer for removing all the solid dust particles from the water. This layer removes around 98% of impurity from water. Surface layer comes after that and removes up to 99.99% of impurities. At last we have screen layer which provided us highly pure water by filtering out all the tiny particles, microorganisms and germs.

Reverse Osmosis is one of the most popular techniques of cleaning water. These filters use a semi permeable membrane to clean water. The porous size of this membrane is so small that it does not allow any of the contaminant or microorganism to pass through it.

When the water goes for filtration, pressure is applied on water first to stop and then to reverse the osmotic pressure. As a result of this pressure you get highly purified water. It wastes a lot of water in purification process and it is one of its biggest disadvantages.

Ultraviolet radiations are very effective in killing germs and hence makes water germ free. Mercury low pressure lamp generating 254 nm UV light is an efficient way of doing this. All the germs and microorganisms are either killed or inactivated by this process, giving you clean and clear water.

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