This system includes:

Fleck 2510 12-Day Control valve
9x48 Fiberglass Mineral Tank
 1" stainless steel by-pass
1 Cu. ft of Manganese Greensand Plus
1 Sleeve of gravel
1.05" Riser Tube
Funnel and Cap 

Iron and Manganese Removal
GreensandPlus™ has a manganese dioxide coating which creates a highly oxidative environment.  When a strong oxidant is injected into the raw water stream ahead of a GreensandPlus™ filter, soluble iron and manganese are easily oxidized and the precipitates are trapped by the media (which acts as a catalyst and does not participate in the reaction). The filter is subsequently backwashed and reused, therefore it is not sacrificed in this process.

Hydrogen Sulfide Removal
GreensandPlus™ directly oxidizes sulfide and catalyzes the oxidation reaction. Increased run length and service life of GreensandPlus™ may be realized by pre-feeding a solution of chlorine-containing compounds.

Arsenic Removal
GreensandPlus™ can be used to remove arsenic from groundwater in the presence of iron. Chlorine must be pre-injected to oxidize the iron convert arsenite to arsenate and keep the media regenerated.

Arsenic combines with oxidized iron and is filtered out in the media. If there is not a sufficient amount of iron present in the raw water, then an iron salt such as ferric chloride can be pre‑injected.

A general guideline is 1 mg/L of iron to remove 20 µg/L of arsenic. This can vary greatly depending on pH, silica, and other competing ions in the water.

Radium Removal
GreensandPlus™ can be used to remove radium from ground water in the presence of manganese, in a similar manner to arsenic removal. In the case of radium, manganese in the raw water is necessary.

If there is not a sufficient amount of manganese present, then manganese sources such as manganous sulfate can be pre‑injected.