Manganese greensand, a distinctive purple-black filtration medium, serves as a highly effective solution for the removal of soluble iron, manganese, and hydrogen sulfide from well water sources. Remarkably, it possesses the capability to address radium and arsenic removal as well. This medium is derived from the mineral glauconite, which is a type of zeolite. By harnessing the ion exchange properties inherent to this natural zeolite, a layer of manganese dioxide is deposited onto the surface of the glauconite grains. Each grain bears a finite amount of manganese dioxide coating, eliminating the need for extensive pre-conditioning before installation and regeneration.

The manganese dioxide coating serves as a catalyst in the oxidation-reduction reactions of iron and manganese. This versatile media can be employed in two distinct operational methods: continuous regeneration (CR) and intermittent regeneration (IR).