- High specific capacity
The (artificial) screen around the filter pipe prevents sand delivery and ensures optimum water delivery to the filter. This allows the filter system to reach a high specific capacity.
- Lower Total cost of Ownership for a water-collection area
On average, an HDDW has a higher capacity than a vertical well. Fewer wells are required to achieve the same output. A reduction in the number of wells means a reduction in the number of drillings and a reduction in the number of pumps. This results in a reduction in:
- The investment costs
One horizontal drilling is more expensive than one vertical drilling. However, the constructing of a water-collection area using an HDDW requires fewer drillings, which reduces the investment costs significantly.
- The maintenance costs
Fewer wells and pumps mean less maintenance. In addition, the horizontal position means a reduction in the contamination.
- The energy costs
Pumping water upwards costs energy. The fact that there are fewer pumps means less energy is required in the extraction of drinking water.
- The safety costs
Every well requires safety measures in the form of, for example, a gate.
- The ground costs
A reduction in the number of wells means a possible reduction in the size of the water-collection area. In addition to the economical advantage, there are other (social) advantages to this as well, such as the fact that the ground can be used for other purposes.
- The filter system is easy to regenerate
The artificial, loose screen in particular makes the filter easy to regenerate.
- The HDDW makes it possible to extract water from thin aquifers
Because the HDDW is positioned horizontally, a thin aquifer can be used. In a vertical well, the capacity of a thinaquifer is insufficient. This means that many wells have to be drilled, or that water is pumped from different layers. The latter gives all kinds of chemical processes the chance to disrupt extraction. As a result, areas with thin aquifers were unsuitable for the extraction of drinking water. The use of an HDDW means that these areas are now suitable.
- The HDDW achieves a constant water quality
With an HDDW, the water comes from 1 aquifer In this aquifer the quality of the water is constant. In a vertical well, the water may come from several layers, with varying water qualities. A constant water quality contributes to a more efficient purification process.
- The HDDW is sustainable
The spikes that are created in the construction of an HDDW are less deep than they are in the construction of a vertical well. The groundwater is only slightly lowered over a long distance, rather than significantly lowered at every well. As a result, the impact on the environment is not as great. In addition, high-quality materials are used in the construction of an HDDW, as a result of which its life span is longer.
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