Source of Iron in Water: Iron (Fe) is a naturally occurring element; it makes up almost 5% of the earth's core. It is no wonder that it so often occurs in surface water and well water.
Symptoms of Iron in Water: Even though iron may not have any health affects, in water it can be very corrosive, causing damage to pipes and appliances. This can also cause pipes to leak, creating even more contaminants in the water. There are four types of iron that may contaminate natural groundwater sources. Each type of iron in drinking water can exist alone or in combination with the others.
Ferrous iron (also known as clear water iron) is ferrous bicarbonate. The water is clear and is in a dissolved state. To filter this type of iron, it must first oxidize in the air, converting it to ferric iron.
Ferric iron, or ferric hydroxide, is visible in the water, giving the water a red color, which is why it is known as "red water iron." This is the kind of iron that can cause staining in sinks, toilets, washing machines, and other places where the water has come in contact.
Organic iron (iron bacteria) is actually a group of bacteria that only need low levels of iron to create the organic molecules needed for their existence. Iron bacteria creates a gelatinous sludge on top of water. It can also make very foul-tasting drinking water. While looking at the top of a container of water, if the surface reflects a rainbow slick, it is likely contaminated with organic iron.
Collodial iron (known as dispersed iron) stays suspended in the water giving a red-pink or weak tea look to the water.
Filtration Solutions for Iron: There is a variety of water filters for iron. Ferrous iron (clear water iron) can be removed and filtered with a water softener provided it is less than 0.5 ppm for each grain of hardness and the pH of the water is greater than 6.8. If the ferrous iron is more than 5.0 ppm, the iron water treatment solution must convert it to ferric iron by contact with an oxidizing agent such as chlorine, before it can be removed from drinking water by mechanical filtration. Ferric iron can simply be removed by mechanical filtration and iron water filters. Organic iron can be removed by an anion resin or by oxidation with chlorine followed by mechanical filtration. Oxidizing agents such as chlorine will also kill iron bacteria in water if it is present. To ensure that you choose the correct iron water filter or water treatment solution, use an iron water test to determine the levels of iron in your water.
20" BB Pentek RFFE20-BB Radial Flow Iron Reduction Filter: The RFFE20-BB filter cartridge is designed to provide an easy and effective method of reducing iron from water, which greatly improves the taste. This cartridge helps to eliminate the...
Part Number: 481046 Alternate Part Number: PT755-20
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