With the cost of virgin granular activated carbon (GAC) on the rise, Guilderland Water District sought an alternative source of filtration media. In this case study, you’ll learn why Guilderland converted its plant to reactivated carbon, and as a result, realized 23% cost savings while maintaining water quality requirements set forth by the EPA.
Built in 1995 in Guilderland, NY, the Guilderland Water District water treatment facility is fully automated and generates 6 MGD. In 2007, Guilderland plant officials began to look for alternative sources of filtration media due to a significant increase in the cost of the virgin granular activated carbon (GAC) it was using.
Guilderland’s GAC supplier, Calgon Carbon, suggested converting the plant to reactivated carbon. Once the use of reactivated carbon was approved by the New York State and Albany County Departments of Health, the Guilderland plant converted two of its six pressure vessels as part of a pilot program. Based on the success of the pilot program, plant officials then authorized a full-scale plan to determine how reactivated carbon as a filtration media affects cost and water quality.
As of 2012, the water treatment facility has transitioned exclusively to reactivated carbon filtration, which has enabled the municipality to achieve cost savings of 23% with no decrease in the quality of its water.