Case Study: GreensandPlus Filter Media Outperforms Competitive Proprietary Media At Major New Jersey Water Facility

Improves Operating Efficiencies and Reduces Costs; Longer Media Life and Longer Run Times Between Backwashes

GreensandPlus, a high-performance water filtration media distributed by Hungerford & Terry, has significantly outperformed the previously used proprietary media, and in the process has increased the efficiency and lowered the operational costs of removing iron and manganese from the water supply of a large New Jersey municipality.

The Situation
A major municipal utility in Southern New Jersey has three filter plants designed to remove iron and manganese from the municipality's ground water. Two of the filter plants were installed in 2001, and the third was added in 2003.

The first two installations used a proprietary filter media that required reaction vessels after the addition of chlorine and sodium bisulfite. Prior to the filters, the pH of the water in these two plants was taken up to 10 to precipitate the manganese; then, after the filters, it was reduced using carbonic acid to achieve a neutral LSI. These installations required frequent backwashing, and the life of the proprietary media was relatively short, requiring expensive replacement.

The third filter plant used GreensandPlus as the filter media, with chlorine and lime as the only chemicals. This process required no reaction vessels, thus reducing the plant's footprint.