Recent Projects
Pecunit WTP, GAC Addition
Setting the first of two lead/lag GAC media filters for the removal of PFAS for the Town of Canton at the Pecunit Water Treatment Plant. It's always fulfilling to watch your design come to life.
Filter Media Replacement with GAC
Full scale demonstration test and design/construction of a filter media replacement project for the removal of PFAS using GAC as filter media at a 6.5 MGD surface water treatment plant in Braintree, Massachusetts. The existing mixed media filters (garnet sand, filter sand, anthracite) were replaced with 6” of 0.5 mm filter sand and 42” of 8x30 mesh GAC. The new GAC/filter sand media depths and sizes were designed to ensure a similar L/D ratio as the existing mixed media and an EBCT of 10 minutes for the GAC. PFAS was successfully removed and filtered water effluent turbidities and filter run