The pictures show a water basin that is completely sealed. Because the basin is closed, there is less evaporation. Moreover, the stored water heats up less thanks to the reflective layer, says Bas van der Elst of Hendic. And last but not least, there is no algae growth in the basin because the water is covered.
The used foil has its own buoyancy through air chambers in the material. So it doesn't need a system of pipes or floats to make it float. Bas continues: "A pipe system or the use of floats often makes a floating cover vulnerable in strong winds. With the DelafloaT system, the slope protection is welded to the DelafloaT material. A weighting tube rolls along the inside of the slope. This keeps the DelafloaT lie tight and flat on the water."
The basin on the photos has a volume of over 12,000 m3 in which rainwater is collected, and nearly 4,000 m2 surface. “With this system it doesn't matter how deep or high a basin is, because the cover floats on it,” explains Bas. This basin is one meter below ground level and three meters above it. The system is assembled in one full day.
This basin is located in Kleve, Germany. It was delivered and assembled by one of Hendic's dealers, Peeters-Motech from Rijsbergen. Hendic has dealers worldwide outside the Netherlands, but the main countries are now in particular Russia and almost all of Asia, as well as North America, Poland, France and Portugal. "We sell a lot of Delafloats, especially in warm countries," says Bas.