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How Different Types of Water Filtration Systems Work

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Water filters are a modern purification mechanism employed to purify water from sediments, odour, bacteria, taste, and hardness, resulting in better quality water. The water purification mechanism is typically a device that uses a variety of cartridges to solve a number of water-related issues coupled with more specialist applications such as brewing coffee and making crystal clear ice.

There are five main types of water Filtration methods in the market currently and each of them addresses a different water problem. Quite often, many of these systems use a combination of these methods to perform multiple-level filtration. The five types of water filters are Mechanical filters, Absorption filters, Sequestration filters, Ion Exchange filters, and Reverse Osmosis filters.

Water is a necessity to sustain life on planet Earth. While covering about 71% of Earth’s surface and about 75% of the human body itself, it is a vital component in everyday life. Its uses spread across a variety of other fields ranging from agriculture, medicine, transportation, recreation, food, heating, and everyday utility work such as washing, cleaning, and consumption. Thus the use of clean water has become a mandatory requirement for survival! A majority of people get drinking water via a municipal water supply which is a safe option. However, it does tend to have risks of contamination by terrible odour and unpleasant tastes due to excess chlorine. In addition to this, when water pipes are damaged or blocked it adds to water contamination. Therefore, water filtration systems have come to the rescue against the most common contamination issues of chlorine taste or odour, lime scale formation and a lot more. But how does each of these types of water mechanism systems work?

The Mechanical System is a process through which filtration happens where any sediments, dirt, or any other particles in the water are physically removed using a barrier. These filters often have parts such as a basic mesh that filters out large particles or debris to a ceramic filter which has an extremely large pore structure that does the ultra-fine filtration of pathogenic organisms. Quite often these filters have a micron rating which indicates how effective the filter is, in terms of removing large particles. The next type of filter is an Absorption filter. This type of filter commonly carries out the filtration process by using carbon which is highly effective in capturing water-borne contaminants. Most of the common domestic filters have granular activated carbon that tends to reduce unwanted tastes and odours via absorption. Additionally, a variety of other materials such as wood, and coconut shells could be used as substitutes for carbon in this type of filter. However, with coconut shells being very expensive, the use of such substitutes may be financially challenging. Sequestration is the action of chemically isolating substances as used in Sequestration filters. Quite often food grade polyphosphate is commonly used to sequester the calcium and magnesium minerals which commonly causes lime scale corrosion. However, polyphosphate is generally introduced in small amounts and it only helps in inhibiting the scale rather than eradicating it.

Soraya Benitez
the authorSoraya Benitez

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