Ultrasonic algae removal instrument is a shock wave generated by specific frequency ultrasonic wave, which acts on the outer wall of algae and breaks and dies, so as to eliminate algae and balance the water environment.

1. Ultrasonic wave is a kind of elastic mechanical wave of physical medium. It is a form of physical energy with the characteristics of clustering, orientation, reflection and transmission. Ultrasonic wave produces mechanical effect, thermal effect, cavitation effect, pyrolysis and free radical effect, acoustic flow effect, mass transfer effect and thixotropic effect in water. Ultrasonic algae removal technology mainly uses mechanical and cavitation effect to produce algae fragmentation, growth inhibition and so on.

2. Ultrasonic wave can lead to the alternating compression and expansion of particles in the transmission. Through mechanical action, thermal effect and sound flow, algal cells can be broken and chemical bonds in material molecules can be broken. At the same time, cavitation can make the microbubbles in the liquid expand rapidly and close suddenly, resulting in shock wave and jet, which can destroy the structure and configuration of physical biofilm and nucleus. Because there is a gas surface in the algal cell, the gas decay is broken under the action of cavitation effect, resulting in the loss of the ability to control the floating of the algal cell. The water vapor entering the cavitation bubble generates 0h free radicals at high temperature and high pressure, which can oxidize with hydrophilic and nonvolatile organics and cavitation bubbles at the gas-liquid interface; The hydrophobic and volatile organic matter can enter the cavitation bubble for pyrolysis reaction similar to combustion.

3. Ultrasound can also change the binding state of biological tissue through thixotropic effect, resulting in thinning of cell fluid and cytoplasmic precipitation.