These Green sand filters were manufactured and supplied to a major company in Canada. The system was designed for 3x 110,880 GPD.
Water that contains too much iron, manganese, and hydrogen sulfide in it can cause a smell, discolor, or taste. In water filtration, the proper way to treat this problem is with a green sand filter. A green sand filter is made up of manganese green sand or is more scientifically known as glauconite. Green sand filters require a pretreatment of an oxidizing agent first, chlorine works best when removing iron from water while potassium permanganate works best when dealing with manganese. Due to the pretreatment, when the water comes in contact with the manganese green sand, either the iron, manganese or hydrogen sulfide instantly oxidize. This means the impurities go from a dissolved state to clumps and then they become trapped in the filter media. As water continues to travel down the tube, the iron, manganese, and hydrogen sulfide are removed down a different pathway. Regeneration of the green sand in the filter is necessary to continue quality and longevity in the usage of the filter.
Date: June 2012
System/Product: Green Sand Filters
Flow Rate: 3X 110,880 GPD
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