According to an EPA Report released in December 2022 - the Biosolids Biennial Report No.9 (Reporting Period 2020-2021) - PFAS continue to be found in biosolids / sewage sludge, a product of the wastewater treatment process. The report states that 13 new chemicals were found in biosolids, 3 of which are PFAS.
According to the report, "In early 2023, EPA is holding a Science Advisory Board (SAB) meeting to review a three-step process to assess the risk of pollutants in biosolids." The EPA has already begun to tighten restrictions around PFAS.
Incineration by way of a Multiple Hearth Furnace or Fluidized Bed Incinerator can be a source for removing PFAS from sewage sludge. An upgrade may need to be made to this equipment to reach the temperature necessary to remove PFAS.
 View the Biosolids Biennial Report No.9. (148.32 KB)
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