Destruction of Plankton using Cavitating Jet

Abstract

This paper presents the experimental result of the destruction of plankton using a cavitating jet generated by a two-dimensional nozzle. The destruction rate of plankton increased with the jet velocity and it reached almost 100% when the nozzle velocity was more than 30 m/s. However, the destruction rate of plankton eggs is lower than that of the plankton. The destruction is more effective when the cavitating jet impinges on the target body, as this causes cavitation bubbles to collapse intensely, and destroys plankton by high pressure generated at the collapsing stage.

Keywords

• plankton
• destruction
• cavitation
• water jet
• ballast water
• imo