The Study of Mathematical Model and Chemical Effect of Self-excited Cavitation Reactor on Degrading Antibiotics

Hydrodynamic cavitation is a promising technology in the degradation of the residual antibiotics which can exist in the environment for long periods as they are chemically stable. Varied methods for degrading antibiotics, bubble dynamics models coupled with chemical reactions, experiment setup and cavitation generators are evaluated. A novel self-excited cavitation reactor which can produce pulse and cavitation using the fluid characteristic is proposed. Compared with traditional hydrodynamic cavitation generator, the self-excited pulsed cavitation jet generator have longer hydraulic detention time, faster bubble collapse, more hydroxyl radical production, better treatment effect, and wider application prospects. Simple design, high energy efficiency and no secondary pollution contribute to the great potential of selfexcited cavitation reactor in wastewater treatment.