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PFAS Removal

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Background

Perfluorinated and polyfluorinated alkyl substances are a group of over 4,000 manmade chemicals, collectively referred to as PFAS (or PFCs). They have recently entered the national spotlight as emerging contaminants with serious adverse impacts on human health, even at low concentrations in the parts per trillion range. PFAS is found in everyday items, including fast-food wrappers, stain-resistant fabrics, nonstick cookware and firefighting foams, to name a few.

Because PFAS, including perfluorooctanoic acid (PFOA) and perflurooctane sulfonate (PFOS), are water soluble, it can seep into surface soils over time from some firefighting foam, manufacturing sites, landfills, and spills. From there, PFAS can leach into groundwater or surface water, and can contaminate drinking water.

PFAS, also known as “forever chemicals”, stay in the environment for a long time and do not break down easily. As a result, PFAS are widely detected in soil, water, air, and food. Some PFAS can accumulate in the food chain. Exposure can occur when someone uses certain products that contain PFAS, eats PFAS-contaminated food, or drinks PFAS-contaminated water. When ingested, some PFAS can build up in the body and, over time, these PFAS may increase to a level where health effects could occur.

How to treat

Depending on your water contamination level, water chemistry, and application, we use either a combination of granulated activated carbon (GAC) and/or ion exchange resin to remove your PFAS and other contaminants to non-detectable levels.

Granulated Activated Carbon (GAC) works well on longer-chain PFAS like PFOA and PFOS. GAC is also used to remove natural organic contaminants, taste and odor compounds, and synthetic organic compounds.

Ion Exchange Resins are used to remove all PFAS contaminates. They will remove both short- and long-chain PFAS—including PFOA (Perfluorooctanoic Acid), PFOS (Perfluorooctane Sulfonate), PFNA, PFHxA, PFHxS, PFHpA, PFBS, PFBA, and many other contaminates.

Also, it is important to remove particulates from the influent stream in order to achieve the very high removal rates.

Two Activated Carbon Drum Filters in series

Prefilter (PFB-10), (2) L-1-CL in series, Postfilter (PFB-10) and a PK-10 Piping Kit.