Vitens supplies 5.4 million people and companies in the provinces of Flevoland, Friesland, Gelderland, Utrecht and Overijssel with top-quality drinking water.
The Spannenburg pumping station is the largest groundwater pumping station in the Netherlands. This station accounts for 65% of the water supply of the province of Friesland. On an annual basis, it pumps and cleans some 25 million m³ of water. The groundwater used in Spannenburg originates in the water catchment areas of Vitens near Tjerkgaast and Oudega (Gaasterlân-Sleat). The ground in these areas partly consists of peat. Peat contains humic acids. These are harmless organic substances which give the water a yellow tint.
Vitens has developed a special cleaning technique to keep this yellow colour out of the water. It involves a new, unique ion exchange application. This takes place in large vats containing small resin beads. The resin removes different organic substances from the water, amongst others the humic acids responsible for the colour in the groundwater. This method works better and more economically than other decolourising techniques.
Beenen is supplying the electronic system and controls in this project. The project is undertaken as a joint building project with Friso Bouwgroep B.V. and the Rook Pijpleidingbouw company.