What the latest research says about the fate of PFAS in wastewater

In this interview, Patrick McNamara of Black & Veatch discusses the evolving role of thermal technologies in biosolids management and their potential to address PFAS contamination. While still in early stages of adoption, thermal processes like pyrolysis, gasification, and incineration are gaining interest among utilities seeking long-term solutions.

McNamara explains how drying can reduce PFAS concentrations in biosolids, the challenges of tracking PFAS emissions in air, and the importance of planning for future regulatory shifts. He also highlights the cost barriers to air sampling and the need for scalable, adaptable infrastructure as utilities prepare for more stringent PFAS regulations. 

Key highlights with timestamps

• 00:26 – State of thermal technologies in biosolids management 
• 01:52 – Utility interest: energy recovery vs. land application
• 02:39 – PFAS regulations and the need to pivot
• 04:37 – PFAS fate during drying and thermal treatment
• 06:08 – Air pollution control technologies and PFAS
• 07:13 – Cost barriers to PFAS air sampling
• 08:14 – Outlook for thermal processes and incineration
• 08:58 – Future adoption and research needs 

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