An apparatus and process that exposes aqueous media to a first one or more rotors, and to a second one or more rotors, the second one or more rotors spaced from the first one or more rotors to define a static zone. The first one or more rotors, the static zone and the second one or more rotors may be enclosed within a treatment vessel and may be operated by a drive component capable of variable rotational velocities. Exposing the aqueous media to gas supersaturation under pressure results in the aqueous media becoming multiphase fluid and, due to non-water components, a complex, compressible, multiphase fluid exhibiting non-Newtonian fluid characteristics. An increased level of symmetric and asymmetric cavitation events, energies, and their effects are achieved, beyond those that can be attained by conventional low energy hydrodynamic cavitation systems.