| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently prevent the propagation of microorganisms in a liquid to be treated. SOLUTION: This ultrasonic treatment apparatus has a housing 20, which houses the liquid to be treated and has a supply port 17 and a discharge port 18, and an ultrasonic element m1 for forming an irradiation region AR1 where ultrasonic waves are produced to irradiate the liquid to be treated. The liquid to be treated is passed through the irradiation region AR1 to be sent to the discharge port 18 and discharged. In this case, since the liquid to be treated supplied to the housing 20 from the supply port 17 is passed through the irradiation region AR1 to be sent to the discharge port 18 to be discharged, the liquid to be treated receives the irradiation with ultrasonic waves during the passage through the irradiation region AR1. Accordingly, the propagation of microorganisms in the liquid to be treated can be prevented sufficiently. COPYRIGHT: (C)2006,JPO&NCIPI
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