GreensandPlus Filter Media: Outstanding Performance with Excellent Production Capacity

Kenneth M. Sayell, Vice President
Inversand Company

Greensand Plus is a new water filtration media for the removal of iron, manganese, hydrogen sulfide, arsenic and radium. Its physical properties are the same as manganese greensand. However, it is superior to manganese greensand because it solves all of the problems associated with traditional manganese greensand. First among these is that it is readily available. There are no delays in production or shipments. Container loads can ship direct from the manufacturing facility in Brazil to a nearby US port. This will save shipping and handling costs as well as save time by getting the media to your warehouse faster than shipping from the USA to your location.

The second improvement is that GreensandPlus is a much stronger and durable media than manganese greensand. Manganese greensand could not be operated at a differential pressure higher than 10 psi. Since it uses a clay type material as its base, a high differential pressure over 10 psi would crush the media into fines that would clog the filter. This will shorten the run time between backwashes, which will eventually lead to failure of the filter bed. GreensandPlus uses a silica-based material that will not crush and can safely be operated up to 15 or 20 psi differential.

The third advantage is that the media will not soften when treating water that is low in dissolved solids, low in total hardness or over 70°F. The clay-like material used as the base for manganese greensand would tend to soften if the raw water was low in solids or hardness or over 70°F. This softening would lead to the media crushing, causing fines that would shorten the filter run time and eventually cause the filter bed to fail. The base material for GreensandPlus is a silica product that will not soften under these conditions and, therefore, can treat low solids, low hardness or warm water without any concern.

SOURCE: Inversand Company