River dissolved gas supersaturation regulation and control device and method based on ultrasonic cavitation

The invention relates to the technical field of water conservancy projects, in particular to a river dissolved gas supersaturation regulation and control device and method based on ultrasonic cavitation. The device comprises an ultrasonic transducer, a temperature control device and an experiment pipeline, the experiment pipeline comprises a water inlet blocking pipe, an ultrasonic cavitation experiment pipe and a water outlet blocking pipe, the ultrasonic transducer is installed on the ultrasonic cavitation experiment pipe, and the ultrasonic transducer is used for emitting ultrasonic waves with different frequencies and different amplitudes and carrying out degassing treatment on a supersaturated water body; the temperature control device is used for controlling the temperature of the supersaturated water body to be in a constant-temperature state; the water inlet blocking pipe is used for blocking ultrasonic waves generated by the ultrasonic wave exchanger and reducing the influence of the ultrasonic waves