AFFF contaminated water treatment
Groundwater damage due to extinguishing water? We provide the solution.
Pioneering work for clean water
Perfluorinated and polyfluorinated alkyl substances (PFAS) are among the most persistent and harmful pollutants of our time. They accumulate in the soil and groundwater - and thus end up in our food and drinking water.
A particularly critical entry path is the use of fluorine-containing foam extinguishing agents - for example during firefighting operations or by triggering stationary extinguishing systems. Even a single application can be enough to introduce PFAS into the ground over a large area.
The result: long-term contamination of the groundwater, which poses a serious risk to people and the environment. Targeted and effective remediation of this damage is therefore essential in order to sustainably protect our environment and preserve our health.
Cornelsen has risen to this challenge - with a solution that sets standards worldwide: the PerfluorAd® process. This patented technology removes PFAS from contaminated water in a targeted, economical and demonstrably successful manner - even at heavily contaminated sites.
PerfluorAd® process
The patented PerfluorAd® process is based on a liquid active ingredient that reacts with the PFAS in the system and forms stable flocs. These can be removed from the water by filtration or sedimentation. The advantage: cleaning is efficient, gentle on the material and without the disadvantages of adsorption. The rinse water is also treated directly on site, which minimises transport and disposal costs.
What makes the process so special?
In contrast to conventional processes, which only bind PFAS to filter media, PerfluorAd®® starts earlier: directly in the water.
Targeted binding: The added active ingredient selectively binds PFAS molecules without interfering with other water constituents.
Flocculation: PFAS-containing microflakes are formed, which can be easily separated.
Separation: The particles formed in this way are removed using proven techniques such as sedimentation or filtration.
Efficient residue: Only a small amount of concentrate containing solids remains, which can be safely disposed of or further treated.
This approach is not only highly effective, but also reduces follow-up costs - because downstream filter systems need to be serviced or replaced less frequently.
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Extinguishing water
Data from laboratory tests and corresponding treatment applications on site have shown that the treatment of extinguishing water poses a particular challenge. This water can contain high PFAS concentrations, organically bound fluorinated compounds (so-called precursors), particles such as soot and/or surfactants. Such a combination of substances has a negative effect on sorption processes such as activated carbon (CC) or ion exchangers (IX). This can result in premature or even immediate breakthrough of the filter material.
A treatment process that combines the removal of PFAS in a precipitation step with subsequent adsorption for fine purification can optimise treatment
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