Install a water filter at home: Reverse Osmosis Filter In - TopicsExpress

Install a water filter at home: Reverse Osmosis Filter In addition to removing chlorine, inorganic, and organic contaminants in your water, an RO filter will also remove about 80 percent of the fluoride and most DPBs (disinfection by-products). The major drawback is the expense of installing an RO filter as most need a plumber to get up and running. Ion Exchange Filter Ion exchange is designed to remove dissolved salts in the water, such as calcium. This system actually softens the water or exchanges natural-forming mineral ions in the water with its own ions, thereby neutralizing their harmful effect of creating scale build-up. The ion exchange system was originally used in boilers and other industrial situations before becoming popular in home purifying units, which usually combine the system with carbon for greater effectiveness. Granular Carbon and Carbon Block Filters These are the most common types of counter top and under counter water filters. Granular carbon filters and carbon block systems perform the same process of contaminant removal, adsorption, which is the chemical or physical bond of a contaminant to the surface of the filter media. Granular activated carbon is the best available technology for the removal of organic chemicals like herbicides, pesticides and industrial chemicals. However, one of the downfalls of granular carbon filters is that the loose material inside can channel--the water creates pathways through the carbon material, escaping filtering. Carbon block filters offer the same superior filtering ability but are compressed with the carbon medium in a solid form. This eliminates channeling and gives the ability to precisely combine multiple media in a sub-micron filter cartridge. By combining different media, the ability to selectively remove a wide range of contaminants can be achieved. Ideally, you want a filtration system that offers a variety of methods to remove different contaminants. Most systems do not address a combination of organic, inorganic, cyst, sediment and metals.

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