Ultrasonics are not only used to control roaming algae in open water bodies, but also to prevent the growth of biofilm in water treatment infrastructure, such as clarifiers, and aquatic leisure equipment
It works on preventing biofilm by producing a sensation of turbulence to the bacteria that form the base layer of biofilm, even in still waters. In response to this, the bacteria withdraw their pili (small filament used for attachment) and do not excrete polysaccharide glue. Without the bacterial base layer algae and other organisms have great difficulty attaching.
It should be noted that ultrasonic control will only prevent new biofilm and not remove existing biofilm, so deployment should be made directly after deep cleaning of existing infrastructure or commissioning of new infrastructure.