The Technology Optimum and Reaction Dynamics of the Simulative Explosive Industrial Wastewater Degradation in Supercritical (Sub-Critical) Water

Supercritical(sub-critical) water oxidation technology is applied to degrade the explosive wastewater and low its chemical oxygen demand (COD). The technology optimum and reaction dynamics of TNT, RDX, HMX degradation have been investigated. The experiment results show that the optimum degradation technology is: reaction temperature T=648K, reaction time t=5min, the volume proportion of waste water and oxidant H₂O₂=10:1. Under this condition, COD is 38mg/L and the degradation ratio of COD for TNT, RDX, HMX is up to 98.7%. The results of reaction dynamics show that the velocity constants are 0.0103, 0.0208, 0.0384, and 0.0466 at 573K, 603K, 623K, and 653K respectively. The active energy, pre-exponential factor and average reaction kinetics order are 60.8kJ/mol, 3.84×10³, and 1.56 respectively.