Water treatment method and water treatment device

Details Water treatment method and water treatment device Water treatment method and water treatment device

2006-03-28

2006-03-28

Lawrence, Frank M. (Department: 1724)

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

C422S020000, C204S157150

Reexamination Certificate

active

07018546

ABSTRACT:
Embodiments of the invention provide a water treatment method and water treatment device capable of automatically tracking the frequency of ultrasonic waves and automatically controlling their amplitude such that optimal cavitation is generated. In one embodiment, a water treatment method of sterilizing water containing microbes comprises supplying ultrasonic vibration to the water to be treated by driving and controlling a transducer of a sterilization cell using a signal; detecting an amplitude of the transducer and a frequency of the signal applied to the transducer; and controlling the amplitude and a vibration frequency of the transducer to target values in accordance with the detected transducer amplitude and the detected signal frequency.

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Tsunenori Okada, et. al., “Cavitation Erosion”,Science of Machine, vol. 49, No. 9 (Sep. 1997) to vol. 51, No. 2, (Feb. 1999).

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