- Underwater pumps move water from the seabed to facilitate renewal and cool the upper layers
Calvià Town Hall, through the public company Calvià 2000, continues to promote measures to mitigate the seasonal appearance of microalgae (Alexandrium tailori) on Palmira beach, in Peguera. This action is part of a seawater recirculation system that has been implemented and improved in recent years with the aim of preserving the environmental and aesthetic quality of the bathing area.
It should be recalled that the proliferation of these microalgae, which recurs naturally every summer, does not pose a health risk nor does it affect the quality standards of bathing waters. However, the visual effect they produce may be unsuitable for a beach located in a top-class tourist destination like Calvià.
The measure consists of capturing seawater at a depth of approximately 4,5 metres, where the temperature is lower, and pumping it towards the coast to renew the surface water and reduce its temperature. This cooling acts as a preventive mechanism against the growth of microalgae, which thrive more easily in warm and shallow waters.
The installation consists of three high-capacity submersible pumps, extraction and impulsion manifolds, concrete fixing blocks, and a fully equipped and safe electrical system. The pumps operate 24 hours a day throughout the summer season, from May-June to the end of September.
