In the world of water utilities and waste management, a new challenge is emerging that could have significant commercial impacts, particularly for the energy sector. Per- and poly-fluoroalkyl substances (PFAS), often referred to as “forever chemicals,” are increasingly being found in biosolids, the nutrient-rich byproduct of wastewater treatment. These chemicals, known for their persistence in the environment and potential health risks, are causing a stir among farmers, regulators, and water utilities alike.
The issue is complex, as PFAS concentrations in biosolids vary widely, and the regulatory landscape is a patchwork of differing standards and thresholds. This inconsistency is making it difficult for water utilities to plan for the future, invest in infrastructure, and manage their resources effectively. The problem is further compounded by the lack of proven, scalable treatment technologies that can handle PFAS at a municipal level.
Dr. Prashant Srivastava, a researcher from the CSIRO Environment in Australia, has been studying this issue and recently published his findings in the Journal of Hazardous Materials Letters, which translates to “Letters on Hazardous Materials” in English. His research highlights the need for clear, science-based regulatory standards to guide compliance and encourage innovation in treatment technologies.
“Effective source control to limit PFAS entry into wastewater systems is critical and cost-effective,” Srivastava explains. This means that preventing PFAS from entering the wastewater stream in the first place could be a more efficient and economical solution than trying to treat it downstream.
The commercial impacts of this issue are significant, particularly for the energy sector. Many energy facilities use large amounts of water in their operations, generating wastewater that often contains PFAS. As regulations tighten and public concern grows, these facilities may face increased costs and operational challenges related to PFAS management.
Moreover, the energy sector could play a crucial role in developing and implementing solutions. For instance, energy-efficient treatment technologies could help water utilities manage PFAS more effectively while reducing their carbon footprint. Collaborative efforts between utilities, academia, technology providers, and stakeholders could drive innovation and lead to practical, sustainable solutions.
Srivastava’s research also emphasizes the importance of integrated strategies that target multiple pollutants. This approach could optimize investments and improve overall water quality, benefiting both the environment and the bottom line.
As the world grapples with the challenges posed by PFAS, the insights from Srivastava’s research could shape future developments in the field. By fostering collaboration, encouraging innovation, and advocating for clear regulatory standards, the water, sanitation, and energy sectors can work together to address this emerging challenge and build a more sustainable future.