A fluid decontamination and apparatus and a method of fluid decontamination, introducing, via an inlet nozzle, a contaminated fluid from a fluid source into a continuous pipe section. The inlet nozzle is coupled to the continuous pipe section that enables fluid flow therethrough. Hydrodynamic cavitation is generated upon exiting the inlet nozzle within the continuous pipe section by spraying and evenly distributing the fluid that induces cavitation formation within the fluid across a three dimensionally open structured (3DOS) substrate disposed within the continuous pipe section. The 3DOS structure is positioned proximate to the inlet nozzle such that the hydrodynamic cavitation generated by the inlet nozzle enters the 3DOS substrate and the 3DOS substrate maintains the hydrodynamic cavitation of the fluid flow into the 3DOS substrate to enable destruction of toxic species and unwanted organic compounds contained in the contaminated fluid.

A fluid decontamination apparatus is provided for, introducing, via an inlet nozzle, a contaminated fluid from a fluid source into a continuous pipe section. The inlet nozzle is coupled to the continuous pipe section that enables fluid flow therethrough. Hydrodynamic cavitation is generated upon exiting the inlet nozzle within the continuous pipe section by spraying the fluid that induces cavitation formation within the fluid across at least one three dimensionally open structured (3DOS) element disposed within the continuous pipe section. The 3DOS element may be sequentially arranged foam rings defining an inner flow channel, or may be one or more solitary structures. The 3DOS structure is positioned such that the hydrodynamic cavitation generated by the inlet nozzle enters the 3DOS element, which maintains the hydrodynamic cavitation to enable destruction of toxic species and unwanted organic compounds contained in the contaminated fluid.