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Iron/Sulfur Systems |
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Greensand
Manganese Greensand is capable of reducing iron, manganese and hydrogen sulfide from water through oxidation and filtration. Manganese Greensand is formulated from a glauconite greensand which is capable of reducing iron, manganese and hydrogen sulfide from water through oxidation and filtration.
Soluble iron and manganese are oxidized and precipitated by contact with higher oxides of manganese on the greensand granules. The hydrogen sulfide is reduced by oxidation to an insoluble sulfur precipitate. Precipitates are then filtered and removed by backwashing. When the oxidizing capacity power of the Manganese Greensand bed is exhausted, the bed has to be regenerated with a weak potassium permanganate (KMnO4) solution thus restoring the oxidizing capacity of the bed. 1 to 2 ounces of potassium permanganate, in solution, per cubic foot of Manganese Greensand is considered sufficient for normal regeneration. It is required to vigorously backwash and regenerate the bed when it is placed in service and before its oxidation capacity is totally exhausted. Operating the bed after oxidation capacity is exhausted will reduce its service life and may cause staining.
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Odor Oxidizer
Removes sulfur odor by converting Hydrogen Sulfide into water and precipitated sulfur compounds. The unit uses a booster pump and a contact tank, sometimes two tanks if sulfur levels are very high or if high flow rates are expected. The unit is very reliable and requires no regeneration and no chemicals to purchase, basically once its installed you can forget about it, twice a year simply open a drain valve to flush any sediment. An added bonus is the extra water pressure to the house from the booster pump.
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Addie
Water enters the system it passes through a bubble of compressed air that adds oxygen to it. The water then passes through a filter bed. The filter material enhances a reaction that separates the iron from the water. The insoluble flakes of iron that result are then caught by the filter bed. The iron-free water then flows to your faucets. The system replenishes itself every one to three days in a process that washes the iron out from the filter and down the drain, while refilling the compressed air bubble. This happens automatically during the night.
The filter media, which is Manganese Dioxide based, catalyses a reaction that turns ferrous iron, usually found in water in the form of ferrous bicarbonate, which is soluble in water, into ferric oxide and ferric hydroxide which are insoluble. This is the same reaction that takes place when iron-bearing water is exposed to air and which leads to staining of fixtures.
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