Background
In June 2023, Cyclopure worked with S.S. Papadopulos & Associates, Inc. (SSPA) to install a DEXSORB pilot system for demonstrating PFAS treatment performance in drinking water from a groundwater well in Poolesville, Maryland. PFAS analysis data shows total PFAS concentrations as high as 127.4 ppt in the groundwater.
Installation
The DEXSORB pilot system was installed and commissioned on June 28, 2023, receiving a split stream from the well. The pilot system design consists of two 8-inch diameter Fiberglass Reinforced Plastic (FRP) vessels with a flow rate of 1.3 gpm and a hydraulic loading rate of 3.7 gpm/ft2. Each vessel is loaded with 27 lbs of DEXSORB media to accommodate an empty bed contact time (EBCT) of 5 minutes per vessel. To remove TSS from the influent water, a sand filter followed by a 1-µm cartridge filter was installed prior to the DEXSORB PBF system.
Since Installation
The DEXSORB pilot system has been operating for approximately 15 hours daily since installation in June 2023, for an estimated operation period of 742 days (i.e., 24 months). The system has provided smooth operation, with minimal pressure drop of < 8 psi across the dual DEXSORB vessels and over 868,000 gallons of water treated for PFAS since system startup.
