Ultrasound and acoustophoresis for water purification

摘要

Provided herein are systems and methods for separation of particulate from water using ultrasonically generated acoustic standing waves.

主权项

1. A method of separating particulate from a fluid comprising:
flowing the fluid past two or more positions; and forming three dimensional acoustic standing waves at the two or more positions, wherein each acoustic standing wave is maintained at a different ultrasonic frequency, wherein each ultrasonic frequency is optimized for a specific range of particle sizes, and wherein particulate of the optimized size is trapped in its corresponding acoustic standing wave against the flow of the fluid, thereby concentrating the particulate in its corresponding acoustic standing wave; wherein the two or more three dimensional acoustic standing waves are pulsed waveforms resulting in high intensity acoustic pressure.