Removal of Organic Carbon from Water by Oxidation with Solid Catalysts,

摘要

The purpose in this short report was to evaluate the technical and economic feasibility of liquid-phase oxidation of soluble organics in wastewaters using solid catalysts. The procedure was,first,to evaluate the kinetics of catalytic oxidation under conditions where the intrinsic activity of the catalyst could be established. With such kinetic results,the next step was to evaluate different types of reactors for practical use in removing organic pollutants from water. Results from this phase of the work would permit an economic evaluation of the process for comparison with alternative procedures,such as biological oxidation. Objectives achieved were to measure intrinsic kinetics for two promising catalysts and to begin the investigation of various reactor types. The work accomplished involved analysis of the performance of trickle-bed reactors for pollutant removal. This appears to be one of the most desirable reactors. A variety of organic pollutants,including refractory acids,can be completely oxidized to carbon dioxide at temperatures of the order of 270C. Maintaining the water in the liquid phase,which requires compressing the liquid to prevent vaporization,eliminates the energy requirements that would be associated with vaporizing the water.