PFAS washing plant Ghent

Behind the scenes of our largest PFAS washing plant

There has been a lot of concern about PFAS in recent years. And rightly so. These heat, moisture and dirt repellents are widespread. The problem? Due to their strong carbon-fluorine compound, the substances are hardly biodegradable and long-term exposure to them can be harmful to humans and nature. Their nickname – ‘forever chemicals’ – says it all. Envisan, Jan De Nul Group's environmental subsidiary, has been researching the treatment of PFAS in soil and water for years. With results. In June 2023, we commissioned our third and largest PFAS soil washing plant in our circular hub near Ghent.
The go-to technique perfected

Soil washing is already being used for quite some time to remediate contaminated soil. In short, in this process the soil is subjected to an extensive series of washing and separation processes. Using special additives that separate the PFAS from the soil and a state-of-the-art water treatment process, Envisan has perfected the technique and is now able to convert 80% of the contaminated soil into sand and other organic substances free of PFAS. In Ghent, we are putting that theory into practice with our latest PFAS scrubber.

Focusing on circularity and minimising environmental impact

The aim of the PFAS washing plant is protecting nature from start to finish. First of all, no water is lost during the soil washing process. The process water is continuously treated and reused in subsequent washing cycles. What's more, the process generates reusable raw materials that are reused in infrastructure works. Finally, all our soil washing plants are semi-mobile and can therefore be used on site. This avoids heavy transport and again reduces our carbon footprint.

Caption, if any: Our PFAS washing plant in Ghent is our third in line alongside our plants in Liège and Toulon in France. With the three plants together, we can make up to 2,000 tonnes of soil PFAS-free every day.