Press Release Water company installs ultrasonic system to kill off algae ULTRASONIC sound waves are being used to kill off algae at an East Dorset reservoir. Sembcorp Bournemouth Water (SBW) has installed an ultrasonic algae control system at Longham Lakes. The system, supplied by Dutch company LG Sound, is used widely in mainland Europe but is the first to be installed by an English water company. It uses underwater sound waves on scienti

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