Raw well water containing more Iron and Manganese it is poisoned when we are drinking. so we have to remove iron and manganese to water use safe drinking water.
When water containing iron and manganese passes through water softener water treatment plant and containing the mixed bed ( Deionized water treatment plant ) anion and cation resins , it oxidized and precipitated by contact and hydrogen sulfide H2S gas eliminated by oxidation to sulfate and insoluble precipitate.
This Softener water treatment plant is Periodic regeneration cycle with a weak solution of potassium permanganate restore the oxidizing capacity of the bed.