The City of Cottage Grove, Minnesota, has implemented a new filtration system to remove per- and polyfluoroalkyl substances (PFAS) from its well water supply. AqueoUS Vets, a company specializing in the removal of contaminants, designed and installed a dual-media granular activated carbon (GAC) system that meets the city’s regulatory requirements.
The project aimed to address growing demand for water while adhering to EPA standards for reduced PFAS levels. The city’s population increased by 12.3% from 2010 to 2020, prompting the need for a comprehensive solution. AqueoUS Vets developed a feasibility study to determine the most suitable filtration technology, identifying GAC as a viable option.
The system consists of three 12-ft diameter models using NSF 61 and Minnesota Department of Health approved Norit 1240PLUS GAC bituminous coal acid-washed carbon. The dual-media design allows for flexibility in treatment goals and regulatory compliance requirements. To accommodate expansion during backwash, the vessel sidewalls are designed with increased clearance to prevent damage or stress.
The project demonstrates effective collaboration between AqueoUS Vets and the selected contractor, ensuring timely delivery and optimal system operation expenditure. Regulatory compliance is now assured, meeting EPA standards for water quality while protecting public health. The new filtration system positions Cottage Grove to meet current and future demands without compromising well water quality or reliability.
Source: https://waterfm.com/pfas-removal-in-minnesota