Ramoni Sánchez Carmona, our head of Water and Environment R&D and doctor in Biological Sciences, has published the technical article…
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The new generation: to combat algae with ultrasound:
Ultrasound (sound waves with a frequency above the 20 KHz)
is transmitted in the water producing a series of cycles of compression and rarefaction, that lead to the generation of cavitation bubbles. This phenomenon is known as acoustic cavitation. Millions of these bubbles implode causing points of high pressure and temperature (100 MPa and 5000º C respectively).
These extreme conditions (high power) cause the maximum cellular disintegration, disinfection, rupture of polymers and release of enzymes to the medium. This results in the disintegration of biosolids for their subsequent digestion process. Then, by using ultrasound as a pretreatment, contaminated water that is difficult to treat can be processed with biological and environmental friendly methods (DUMO Ultralyzer).
When we work with lower power ultrasound, the effect of cavitation occurs more narrowly. However, pressure variations produced by the effect of acoustic cavitation affect algae in a different way, thus alleviating algae blooms and biofilm formation. Ultrasound creates a stressful environment that avoids the settlement of certain larvae of colonizing organisms (DUMO Algacleaner and DUMO Marina ACM).