Tuesday, December 28, 2010

How Water Filters Work To Eliminate Impurities



It is very important for our drinking water to be safe and clean. However, before water reaches our home, especially if you are getting water from public supply. Through the process, there is a big possibility that some unhealthy and dangerous components will be combined with the water. You don’t have to worry about that, because there’s a method used to remove this impurities in the water. This is called water purification or water filtration process.  The process uses water filters to remove the impure particles and set the water ph level.  How filters eliminate impurities in water is a complicated process.
How filters eliminate impurities in water?
Water filtration is divided into different stages and classifications. Most water filtration differs in the kind of process and classification of water contaminants it removes during the process. How filters eliminate impurities in water greatly depends on the water filtration process and the filter equipment it self. For example, reverse osmosis removes impurities in water by using water pressure and selecting what kind of minerals should pass the semi-permeable membrane. It is also known as ultra filtration where in the water impurities are removed according to pore size. In distillation process, unwanted water impurities are removed by boiling killing the germs and bacteria.  Talking about water filters means it is all about the units and equipments used in water filtration or water purification. Water filters make use of different kinds of equipments or media to remove or reduce the contaminants from the water, either by physically blocking the contaminants from joining the water or chemically removing them. One of the most commonly used is charcoal. Charcoal is always considered as ash however it does not make the water dirtier. The charcoal used in water purification or filtration process is granulated or in solid form. These granules blocked the large water contaminants and stop them from passing through with the clean water. Modern water filters uses chemical processes to remove other contaminants like chlorine which is difficult to remove using charcoal. The filters used to remove chlorine are carbon-based units that attracts chlorine’s atom to break their connection or bond with the water molecules. How filters eliminate impurities in water in general cannot be the same process.

How filters eliminate impurities in water is really dependent on the kind of water. Not all water filters can remove the same or all kinds of water contaminants at the same. Each water filter, may it be the process or the units are specifically made to remove certain water contaminants. Before deciding on what kind of water filter will you use, you have to know what kind of water supply you have to determine the kinds and classification of water contaminants that are present in it.

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