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TKI-project HDDW for drinking water extraction in the dunes near Scheveningen

Dunea, Visser & Smit Hanab and KWR Watercycle Research Institute have started a collaboration within the framework of the Topconsortium for Knowledge and Innovation (TKI). Together they will make a feasibility study of the applicability of HDDW in the dunes at Scheveningen. In 2015, Dunea wants to build an HDDW in the dunes.

Dunea, Visser & Smit Hanab and KWR Watercycle Research Institute have started a collaboration within the framework of the TKI-programme. In the dunes near Scheveningen, Dunea brings water from the river Waal in order to make drinking water from it. The water is infiltrated in the dunes and extracted by vertical wells. In the mean time, the bacteria in the water have died and the water is suitable for drinking water production. The sand layers are thin, making hundreds of vertical wells necessary to extract the needed water. HDDW can reduce the number of wells significantly, because an HDDW can be drilled in a thin sand layer over long distances. Before Dunea wants to apply HDDW in the dunes, they have a few site specific questions. First, research has to be done to answer those questions.

Several vertical test wells will be drilled, which will be used to research the removability of several types of drilling fluid. Three different types of drilling fluid will be tested and three different types of removal. Also, the wells will be developed and pumped clean, after which they will be compared to a reference drilling without drilling fluid. Depending on the results of the test wells, Dunea will build a HDDW for the extraction of drinking water from the dunes at Scheveningen in 2015.

The TKI-accommodation is meant for companies and scientist to work together to launch innovative products or services. Companies invest in the collaboration and TKI gives an addition to the investment of 25%. This project is part of the Topsector Water, focusing on the protection of the Dutch coast, but also on water saving systems and technologies for water reuse. HDDW can deliver an important contribution to a sustainable water supply in the future.

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