Tailored PFAS treatment
PFAS encompasses thousands of variations and is highly resistant to degradation. These compounds are complex, and not all PFAS contaminants behave the same way, meaning different types may require specific treatment technologies. As a result, a solution that worked in one project cannot automatically be expected to deliver the same results in the next.
To address this challenge, we utilize multiple technologies when treating PFAS-contaminated water in our projects, providing a tailored solution based on the specific needs of each project.
Choice of treatment technology
Each PFAS treatment project is unique and is influenced by factors such as PFAS concentration and structure, other contaminants, regulations, waste management, budget, as well as site and time constraints.
As mentioned earlier, PFAS consists of thousands of variations that behave differently, and they often require specific treatment technologies. When selecting a method, the differences between short- and long-chain PFAS should particularly be considered:
- Short-chain PFAS: These are more water-soluble and bind less strongly to activated carbon, making ion exchange technology a more effective solution.
- Long-chain PFAS: Less soluble and bind more strongly to particles, making activated carbon and BioMedia® suitable for treatment.
A thorough risk and needs analysis is crucial for selecting the right technology. Therefore, we always conduct a detailed analysis before providing a quote for a facility. This includes reviewing the project's documentation, investigations, and specified conditions.
We conduct water samples and treatment tests in our laboratory and, if necessary, carry out bench studies or pilots if relevant. Our focus is on offering a well-dimensioned facility that ensures the project meets the specified target values.
Ion exchange technology
Swedish Hydro Solutions uses SciDev's ion exchange technology, including FluorofIX™ – a specially developed ion exchange technology that effectively and safely removes PFAS from contaminated water. The technology prevents breakthrough of contaminants, minimizes waste by-products, and enables treatment down to the lowest detection limits through optimized processes with strong and weak bases.
FluorofIX™ systems are mobile and modular, making them easy to install and adapt for the treatment of contaminated surface water, groundwater, and liquid waste – even at high contamination levels. After treatment, the water can be safely discharged into the environment.
RegenIX™, which is integrated into the system design, regenerates ion exchange media on-site without significant additional costs and can reduce operating costs by up to 79%. The non-combustible regeneration solution generates a liquid-based waste stream that can be used in PFAS destruction technologies.
Activaded carbon (GAC) and BioMedia®
Activated carbon (GAC) and BioMedia® are both filter materials used to bind and adsorb contaminants, including long-chain PFAS compounds, but they work in different ways. Activated carbon is effective for removing organic substances and PFAS through adsorption on the surface of the carbon particles.
BioMedia®, on the other hand, is a biodegradable filter material that combines physical and biological filtration. It is particularly useful in long-term water treatment or when a more sustainable alternative is desired. BioMedia® can also promote the biological degradation of certain substances, making it effective in long-term applications.
These materials are often combined to handle both PFAS-contaminated water and elevated levels of other contaminants, such as metals.
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