Last week, the EPA’s Office of Land and Emergency Management released interim guidance on the best methods and technologies for the destruction and disposal of PFAS. It includes three primary destruction and disposal methods: underground injection, landfills, and thermal treatment under certain conditions, including incineration. The guidance notes that storage through underground injection, containerizing, or landfill are temporary solutions rather than long-term strategies, but that these solutions can help limit PFAS migration through water or other media. As for treatment, research suggests that hazardous waste combustors could be a partial solution, though concerns exist about air pollution and public health.
The guidance makes clear that much uncertainty remains about how to effectively store and dispose of PFAS. This scientific and knowledge gap has significant implications for water recycling projects as EPA continues to move forward with rulemakings under the Resource Conservation and Recovery Act (RCRA) and Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Water recycling projects often use granular activated carbon (GAC) and reverse osmosis membranes to produce highly treated recycled water, including the removal of PFAS. Utilities need viable options for disposing of PFAS-laden treatment residuals, such as spent GAC and membranes, so that critical water recycling projects can continue.
The National Defense Authorization Act requires EPA to update this guidance every three years or as needed. The comment period for this interim guidance is open 180 days from the announcement. |