Manganese Greensand is formulated from a glauconite greensand which is capable of reducing iron, manganese and hydrogen sulphide 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 sulphide is reduced by oxidation to an insoluble sulfur precipitate. Precipitates are then filtered and removed by periodic backwashing. When the oxidizing capacity power of the Manganese greensand is exhausted, the bed has to be regenerated with a weak potassium permanganate (KmnO4) solution thus restoring the oxidizing capacity of the bed Advantages:
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