Spherical activated carbon ozone catalyst with high alkalinity on surface and application of spherical activated carbon ozone catalyst

Abstract

The invention provides a spherical activated carbon ozone catalyst with high alkalinity on the surface. The spherical activated carbon ozone catalyst is prepared by the following steps: mixing asphaltof a low softening point and an oxidation accelerator with a Lewis catalyst, adding a surfactant and a water suspension, performing sphere formation, performing carbonization and activation so as toobtain a mesoporous spherical activated carbon catalyst, further adding an alkali liquid, performing sufficient mixing and modification, uniformly mixing the components through gradient temperature change, performing washing till the pH value is stable, performing vacuum drying, so as to obtain mesoporous spherical activated carbon with high alkalinity on the surface. The material is high in catalytic activity, is capable of significantly improving the efficiency of converting ozone into hydroxyl radicals and promoting mineralization of refractory pollutants, is good in stability and can maintain high catalytic activity in long-term use. The catalyst can be applied to treatment on organic pollutants, and is beneficial to adsorption and intragranular diffusion and mass transfer of pollutants, and the degradation efficiency can be improved.

Description

technical field

[0001] The invention relates to a surface highly alkaline spherical activated carbon ozone catalyst and its application. It belongs to the fields of environmental engineering and water treatment. Background technique

[0002] Degraded organic wastewater refers to wastewater that decomposes slowly or cannot be decomposed by microorganisms, and if it can be decomposed by microorganisms, it cannot be completely decomposed. The common characteristics of these substances are high toxicity, complex ingredients, and high chemical oxygen consumption. Generally, microorganisms have almost no degradation effect on this wastewater. If these substances are discharged wantonly without treatment, they will seriously pollute the environment and threaten the environment. Human health. Refractory pollutants are easy to accumulate in organisms and become potential sources of pollution in water bodies. At present, the types and discharge of industrial wastewater are increasi...

Images