Tackling the PFAS puzzle: challenges and solutions in wastewater treatment

PFAS (per- and polyfluoroalkyl substances) have become a significant challenge in wastewater treatment, detectable in effluents even without direct industrial sources. Dana Gonzalez, a principal technologist and California PFAS lead at Carollo Engineers, sheds light on this issue in her article, “Tackling the PFAS Puzzle: Challenges and Solutions in Wastewater Treatment.”

In the article, Dana discusses how water resource recovery facilities act as passive receivers of PFAS, which makes it difficult to remove these persistent chemicals. While the EPA has issued guidance to help manage PFAS through strategies like quarterly monitoring and source control, the challenge remains complex. Traditional separation technologies such as granular activated carbon, ion exchange, and reverse osmosis can be effective, but they may not always be feasible for secondary effluent.

Moreover, she points out how much of the PFAS in wastewater ends up in the solids stream, an obstacle for biosolids management. With potential regulatory changes on the horizon, utilities need to be prepared to adapt their strategies.

Dana emphasizes the importance of proactive measures, including regular PFAS monitoring, collaboration with industries to reduce sources, and strategic planning to stay ahead of evolving regulations. Engaging with neighboring entities and maintaining open communication with the public are also critical components of effective PFAS management.

To learn more about Dana Gonzalez’s insights and recommendations, read the full article on the California Water Environment Association’s website.