Manganese Green Sand
Manganese greensand is a purple-black filter medium used for removing soluble iron, manganese and hydrogen sulfide fromwell water supplies. It also has the capability of removing radiumand arsenic. It is processed from the mineral glauconite which is zeolite. Using the ion exchange properties of this natural zeolite, a maganense dioxide coating is deposited on the surface of the glauconite grains. Each grain has a finite amount of manganese dioxide coating it. Un like in-situ treated media, there is no feed for any extensive pre-conditioning of the filter media to try to apply a coating. The filter media is ready to install in the filter and be regenerated.
The manganese dioxide coating acts as a catalyst in the oxidation reduction reaction of iron and manganese. The media can be used in two methods of operation : continuous regeneration (CR) and intermittent regeneration (IR)