Cleaning of water filtration basins.

The demand for drinking water is particularly high in densely populated areas, and the method known as slow sand filtration is one way of significantly significantly increasing the volume of groundwater available for extraction. This is a natural way of preventing a severe drop in the groundwater table. Waterworks sited close to rivers and lakes often make use of this natural cleaning process, channelling surface water into large manmade spreading basins. The water percolates through the layers of sand and into the gravel courses typical of these areas, which act as filters. The filtered water feeds subterranean aquifers and wells and raises the groundwater table.

The individual sand filter beds often measure 15,000 m² and more in size and the constant watering makes them hugely prone to plant and algae growth. Cleaning the surface is a regularly recurring task.

BeachTech is well up to the challenge: The powerful pick-up motor enables the machine to loosen the sand and also reduce plant growth. Relying on BeachTech technology instead of conventional techniques means that over a period of many years, no filter material is removed. BeachTech's combined raking and screening removed 80 % of weeds and filter residues, hugely extending the useful life of the filtration facilities. Aerating the sand also significantly reduces bacteria density.