Filters: Types, Functions And Significant In The Water Purification


If we try to define what the filter is, then there are various definitions that come in the mind, for example, a filter can be utilized in the context of the filtration of liquids and air in household services especially. As per technical term, it is a porous instrument or tool which is vastly utilized to remove unwanted solid components from the liquid and gas material.



What is the water filter?

On the off chance, we gander the actual definition of water filter, any component, such as filter fabrics, filter paper, porous porcelain, or a sand layer through which liquid or gas particles is passed to avoid the suspended impurities or sometimes to recover solid particles.

A water filter is made to decrease or we can say remove anything in the water that is considered an undesirable substance. There are many different kinds of filters that complete filtration procedure by the different designing structure. Each structure has its own strengths and weakness too based on the innovation. Often these several kinds of filters are utilized for joining with each other to achieve the desired output.

Types of Water Filters:


In general ways, the functionality of the filter can be defined as follows:

  • Media path filters:

These tortuous filters generally utilize a media such as sand particles or ceramics substance. If there are several thin and tiny water impurities come together, they make a path known as the tortuous, that I responsible for the cavities in between the media. As the water makes its path with the help of the media, it removes behind particles that are larger in size than the cavity sizes that is created by the media. This filter also removes undissolved solids, unless the media is also able to absorb certain pollutants.

  • Filters having particle size structure:

These filters are made by the materials such as cotton filter cloth, filter paper, fiber glass filter clothes or a membrane. These filters will easily accept water and also any particles that are smaller than its rated pore size. On the efficiency of the water filter and the rated pore size, the removing capacity of impurities depends. As the water impurities get bigger in size, the efficiency increases.

  • Filters utilized for adsorption procedure:

Adsorption water filters have created a media of a fine grain to improve the surface section contact by attracting some particles in water to attach themselves to the surface of the media and makeup there.

  • Filters utilized in absorption procedure:

Absorption water filters are usually a media type filter. These filters suck up certain parameters into the water. This absorption water filter likewise can absorb different types of water impurities easily and quickly.

  • Ions exchange filters:

These are generally a fine media to increase surface area. These Ions exchange filters accept a parameter and provide something by replacing that parameter in returns. This is how the water softeners perform its functionality, taking the Ca and Mg ions in exchange for getting the sodium ions.


Hope this article will help you!