Tag: PFAS

Telling a homeowner their drinking water is contaminated with any level of arsenic or PFOS and PFOA Forever Chemicals can cause a moment of alarm, but the diagnosis isn’t without treatment options, and Duff Co. offers exceptional solutions at competitive prices.

Arsenic Filter Cartridges

Aries Filter Cartridges

PFOA/PFOS Removal Systems

Duff Co. is also pleased to announce that the existing Freshpoint Reverse Osmosis system has received certification by IAPMO R&T for reducing up to 98% of PFOA/PFOS, commonly known as “forever chemicals.”

Three of Pentair’s Freshpoint products have received this designation: The Freshpoint F2000-B2B Two Stage, the Freshpoint F3000-B2B Three Stage Filtration Systems and the Freshpoint GRO-575B Five Stage Reverse Osmosis System.

These products still feature the same effortless click-in cartridge change-outs and color-coded cartridges customers love to help maintain the proper filter sequence.

If you have questions or which to receive a quote for arsenic filter cartridges, Aries cartridges, or any Freshpoint RO system, contact us today!

“Forever chemicals” derive from a variety of industrial and manufacturing operations related to non-stick and stain resistant coatings, fireworks and munitions, and other applications. PFOS and PFAS can appear in potable water by leeching into groundwater and through other means. PFOS and PFAS filtration and removal can be achieved through a variety of Ion Exchange and other resins, including these two products, both made in Camden, NJ.

PFAS and PFOS Filtration Recommended Uses:

• Residential Drinking Water
• Commercial
• Industrial
• Point-of-Entry (POE)
• Private Wells
• Groundwater

Perchlorate (PFAS) Reduction Filters

SIR110HP Filtration Media

Per- and polyfluoroalkyl substances (PFAS) are a group of synthetic chemicals that includes PFOA, PFOS, GenX, and others that were developed in the 1940s. They are also known as “forever chemicals” because they do not break down and accumulate over time in both the environment and in the human body.

Where do PFAS come from?

They have been used in the production of Teflon and fluoropolymers that coat products to protect against heat, corrosion, and other chemicals. They were also used in the 1960s to develop a film-forming foam used to fight petroleum fires at oil refineries, airfields, and other similar locations.

Where can you find PFAS?

PFAS can be found in the drinking water of more than 110 million people. Studies indicate that exposure can lead to reproductive and developmental harm, liver and kidney, and immunological effects in laboratory animals. Both chemicals have caused tumors in animal studies. The most consistent findings from human studies are cancer, thyroid hormone disruption, increased cholesterol levels, low infant birth weights, and effects on the immune system.

How do you remove them?

PFAS removal is resistant to many, if not most, water treatment processes. Some removal processes can even increase their concentrations. Additionally, processes such as powdered activated carbon, can effectively remove older PFASs, but are less effective with newer PFASs.

But the good news, according to the EPA, is that these chemicals can be removed by up to 99.9 percent (EPA established health maximum level of 70 ppt) by processes such as granular activated carbon, membrane separation, ion exchange, and powdered activated carbon.

There are two forms of PFAS: short-chained and long-chained. Short-chain compound shave fewer carbons. Long-chain compounds are either sulfonic-based, with six or more carbons in the polymer chain, or carboxylic acid-based with 8 or more carbons in the polymer chain. There are different removal methods for each.

Single-Use Resins

Granular Activated Carbon (GAC) is less efficient and more expensive than single-use resins. Reverse osmosis, foam fractionation and regenerable ion exchange resins create PFAS-laden waste streams that must be treated again with a single-use PFAS-selective resin.

Certain manufacturers have developed special ion exchange resins with high selectivity for poly- and perfluoroalkyl substances. For instance, ResinTech’s SIR-110-HP is a chloride form perchlorate, nitrate, and PFAS selective gel strong base anion resin with WQA Gold Seal Certification.

Water treated with these types of resins will consistently achieve simultaneous removal of both short- and long-chain PFAS—including PFOA, PFOS, PFNA, PFHxA, PFHxS, PFHpA, PFBS, and PFBA— to non-detectable levels.

And because they are high-capacity, single-use resins, there is no need for regenerant chemicals or methanol that can increase the corrosiveness of treated water. All exhausted resin gets incinerated, which completely breaks down the compounds, preventing re-introduction into the environment.

For more information about how to treat PFO/PFAS, contact us today!