Patent ID: 6951616

Claim:
A method of treating a liquid or a slurry of a liquid with an ultrasonic energy comprising: providing a first member being permeable to a medium, and a first vibrating device and the first member having a first gap formed therebetween, the first gap representing a first distance; providing a second member aligned with the first member and providing a second vibrating device, the second vibrating device and the second member having a second gap formed therebetween, the second gap representing a second distance; feeding the medium between the first and second members; and the first and second vibrating devices generating pulse through the first and second members, respectively, to form imploding bubbles in the medium disposed between the first and second members, the bubbles having a critical diameter prior to implosion that is greater than the first distance and the second distance to prevent imploding bubbles from being disposed in the first and second gaps.