Design the mechanical–chemical reactor for oily wastewater treatment

Abstract

This study explains the mechanical design of a mixer with a focus on the fluid forces generated by the fluid continuum in the mixing reactor on the impellers. The research demonstrates that the forces are caused by transient asymmetries in fluid flow that act on the mixing impeller. The mixer shaft and gear reducer receive these dynamic loads from the impeller blades. A general equation for the fluid force behavior can be developed. The research also stresses on the significance of the mechanical interaction of the mixing process with the mixing vessel and impeller. Four parameters were measured; impeller speed for coagulation and flocculation, mixing time for coagulation, and flocculation. The experimental results in the final section will explain that impellers with four blades provide higher oil removal than impellers with two blades in oily wastewater treatment.