Internal view of a horizontal filter with the under drain installed prior to shipment.

The Ferrosand® Filter
Filter Media GreensandPlus™
from the Inversand Company
A proven technology for reliable, cost-effective removal of iron, manganese, and arsenic from groundwater.

Prior to World War II, researchers in the water treatment field working with well-known chemical theories of oxidation and reduction, developed the basic technology of manufacturing manganese greensand from the mineral glauconite.

H&T perfected the manganese greensand process with the development of the Ferrosand CR (continuous regeneration) Process, which was patented in 1963.

In 2005, GreensandPlus, the next generation of manganese greensand was developed and has been marketed to the water industry.

Today, GreensandPlus is utilized as an exact replacement for manganese greensand for CR or IR (intermittant regeneration) application. It requires no changes in backwash or chemical feed rates. GreensandPlus ensures the complete oxidation of soluble iron, and manganese using stoichiomatric quantities of oxidizing agents without the need for long reaction times, dissolved oxygen, or elevated pH levels.

GreensandPlus advanced chemical properties allows it to be used in various methods of operation. This allows flexibility in the design of the water treating equipment with specific tailoring to the raw water characteristics.

* For various applications, H&T offers standard/off-the-shelf iron removal systems. These are fully engineered and pre-assembled for immediate shipment to your facility. To learn more, speak to your H&T representative.

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