Water Research Australia confirms efficacy of ultrasound on cyanobacteria

Water Research Australia put out a 2015 Fact Sheet, “Ultrasound for the control of cyanobacteria”, describing that Cyanobacterial blooms are frequently disruptive and recurrent in natural and managed waterbodies. Options that are used to inhibit blooms in a water storage include nutrient control, destratification/aeration, and algaecides.

Cyanobacterial blooms have traditionally been treated with the algaecide copper sulphate, a biocide that whilst very effective, is expensive, kills non-target species, and results in contaminated water treatment residuals...

The use of ultrasound as an alternative treatment has been the subject of research since the 1970s… The effect of ultrasound on cyanobacteria has been demonstrated in the laboratory…