Aqua Pure Water Filters Contaminants Acidic Water Aluminum Ammonia Arsenic Bacteria Barium Benzene Bicarbonate Borate (Boron) Bromine (Bromide) Cadmium Calcium Carbon Dioxide Carbon Tetrachloride Chloride Chlorine Chromium Color Copper Cyanide Cyptosporidium Fluoride Giardia Lamblia Hardness Hydrogen Sulfide Iron Lead Legionella Magnesium Manganese Mercury Methane Nickel Nitrate Nitrite Odor Organics Pesticides pH Potassium Radium Radon Selentum Silica Silver SOC's Sodium Strontium Sulfate Taste THM's TOC Total Dissolved Solids Turbidity Uranium Viruses VOCs Iron Source Iron occurs naturally in ground waters in three forms, Ferrous Iron (clear waste iron), Ferric Iron (red water iron), and Heme Iron (organic iron). Each can exist alone or in combination with the others. Ferrous iron, or clear water iron as it is sometimes called, is ferrous bicarbonate. The water is clear when drawn but when turns cloudy when it comes in contact with air. The air oxidizes the ferrous iron and converts it to ferric iron. Ferric iron, or ferric hydroxide, is visible in the water when drawn; hence the name “red water iron”. Heme iron is organically bound iron complexed with decomposed vegetation. The organic materials complexed with the iron are called tannins or lignins. These organics cause the water to have a weak tea or coffee color. Certain types of bacteria use iron as an energy source. They oxidize the iron from its ferrous state to its ferric state and deposit it in the slimy gelatinous materials that surround them. These bacteria grow in stringy clumps and are found in most iron bearing waters. Treatment Ferrous iron (clear water iron) can be removed with a 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, it must be converted to ferric iron by contact with a oxidizing agent such as chlorine, before it can be removed by mechanical filtration. Ferric iron (red water iron) can simply be removed by mechanical filtration. Heme iron can be removed by an organic scavenger anion resin, or by oxidation with chlorine followed by mechanical filtration. Oxidizing agents such as chlorine will also kill iron bacteria if it is present. Related Products APIR075M - For: Whole house filtration APIR075S - For: Whole house filtration APIR100M - For: Whole house filtration APIR100S - For: Whole house filtration APIR200M - For: Whole house filtration APIR200S - For: Whole house filtration APIR300M - For: Whole house filtration APIR300S - For: Whole house filtration NWS050ME - For: Whole house filtration NWS075 - For: Whole house filtration NWS075M - For: Whole house filtration NWS075ME - For: Whole house filtration NWS100 - For: Whole house filtration NWS100M - For: Whole house filtration NWS100ME - For: Whole house filtration NWS150 - For: Whole house filtration NWS150M - For: Whole house filtration NWS200 - For: Whole house filtration NWS200M - For: Whole house filtration NWS300 - For: Whole house filtration NWS300M - For: Whole house filtration NWSC075 - For: Whole house filtration NWSC075M - For: Whole house filtration NWSC100 - For: Whole house filtration NWSC100M - For: Whole house filtration		Drinking Water Systems Replacement Drinking Water Cartridges Replacement House Filters Water Softners Whole House Filter Systems Back Washing Filters Iron Removal Systems Ultraviolet System Cuno Food Service Purwater Test Kits Water Factory Refrigerator Filters Replacement Parts Food Service Cartridges << MORE >> Iron Total Dissolved Solids Hardness Acidic Water Bacteria Chlorine pH Calcium Arsenic Bicarbonate << MORE >>
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