HDDW

The HDDW technique is a unique and proven method for groundwater extraction and infiltration. This new technology can be applied in a variety of ways and offers great advantages over the existing techniques.

In the construction of an HDDW, a filter pipe is introduced into an aquifer through horizontal directional drilling. Depending on the desired application, water is extracted from or infiltrated into the soil.

Extensive research leads to unique development

Water extraction or infiltration through a horizontal filter is an old dream with many advantages. It was long thought to be impossible, and met with many complications. Extensive research and tests led to unique solutions for the horizontal extraction.

An important development is the possibility to completely remove the drilling fluid required in horizontal directional drilling. The presence of drilling fluid can have a negative influence on the capacity and the water quality. Advanced removal of this drilling fluid guarantees optimum capacity and quality.

Another extraordinary invention is the casting of an artificial, loose screen around a horizontal filter pipe. An artificial, loose, cast screen prevents the delivery of sand in irregular soil. This ensures that the filter system meets the desired capacity, and makes it easy to maintain.

All these developments have led to the HDDW, a unique technique that offers many possibilities in the field of water extraction and infiltration.

Applications

Click on one of the applications to read how the HDDW is applied in this situation, and which specific advantages this technique has to offer.

Operation

Watch the video and see how the HDDW is constructed.

Innowater consortium

Accomplish a complex development can take years and is a mission impossible for one company. Frequent consultation with partners from the same line of business is essential to develop a high quality product.

For years the construction of horizontal wells with the HDD technology was an unreachable dream. But with the effort of many parties this dream, the HDDW technology, came true. Already in 2005 a first design was made by drinking water company Oasen, with her partners IF Technology, GeoDelft en Visser & Smit Hanab by using approved methods.

In 2006 KWR, IF Technology, Wavin, Akzo Nobel en Visser & Smit Hanab carried out a subsidized IS-feasibility study. This study describes the chances and possibilities of the HDDW and the optimization of the HDDW-technology. Later it is possible to further optimize and test the HDDW technology by using the additional knowledge of TU Delft, Waternet, Brabant Water and Vitens. At this stage all partners together apply for a subsidy of the Innowater program of Senter Novem.

This project shows great results can be achieved by combining the knowledge and skills of several enthusiastic parties.