New technology to help remove PFAS from water in Minnesota

The Minnesota Pollution Control Agency (MPCA) is rolling out new technology this fall that will help remove per- and polyfluoroalkyl substances (PFAS) from water, the agency announced Monday.

The MPCA explained that it works in two stages. First, surface activated foam fractionation (SAFF) injects outside air into the water, turning the PFAS into foam that can be separated. Once the foam is removed, with low PFAS levels, the water is returned. Second, “the PFAS concentrate then goes to the DEFLUORO unit, a second technology where carbon-fluorine bonds (the backbone of PFAS chemicals) are broken through electrochemical oxidation,” the agency noted in a release. hurry.

According to the MPCA, Minnesota will be the first state in the United States to use this new technology to combat “everlasting chemicals” contaminating water.

The MPCA says the state will use this new technology in the East Metro as part of its ongoing work to address PFASs that affect the drinking water of approximately 174,000 residents. The new technology is funded by 3M settlement money.

“This pilot project marks the start of a new era for PFAS cleanup in Minnesota,” MPCA Commissioner Katrina Kessler said in a press release. “This study will help us address PFAS contamination at the source and develop long-term solutions for cleaner water, ensuring safe drinking water for Minnesotans. We hope to eventually use this technology statewide, including in Greater Minnesota, where PFAS is a growing concern.

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