Hungerford & Terry
GreensandPlus™ from Hungerford & Terry is a black filter media that removes soluble iron, manganese, hydrogen sulfide, arsenic, and radium from water supplies. The manganese dioxide-coated surface acts as a catalyst in the oxidation reduction reaction of iron and manganese. The silica sand core allows it to withstand operating conditions in waters that are low in silica, total dissolved solids (TDS), and hardness. The product is effective at higher operating temperatures and differential pressures. Systems may be designed using vertical or horizontal pressure filters, as well as open gravity filters.