Multiphase catalytic ozone oxidation depollution technology based on enhanced ozone adsorption and application thereof

Abstract

The invention provides a preparation method of novel catalyst manganoferrogehnite (MnFe2O4, MFO), which aims at overcoming the weaknesses that the conventional powder catalyst is unlikely to separate in the water phase. By integrating the advantageous adsorption catalytic performance of different forms of ferrous oxides and manganese oxides such as MnOx, FexOy, the content of soluble ozone in water can be effectively increased, so that the manganoferrogehnite can be used as a catalyst to effectively improve the intensified removing effect of ozone on medicines such as phenacetin and pharmaceutical and personal care products in the water; more importantly, the manganoferrogehnite has magnetic property, the separation in the water can be completed through the magnetic field, and a novel method is provided for the washing and recycling of the catalyst. In addition, the manganese and iron sources in China are rich, and the high-efficient catalyst produced by adopting the manganese and ferrum as the raw materials has the advantages of low cost, easiness in acquisition and the like. The catalyst is prepared by a method for collectively depositing manganese salt, ferrates and alkaline liquid, the process is simple, and convenience in operation is realized; moreover, the preparation period of the catalyst is short, and the potential application prospect in the field of the treatment of drinking water or sewage containing PPCPs is promising.

Description

technical field [0001] The invention relates to the preparation of a heterogeneous catalytic ozonation catalyst based on enhanced ozone adsorption and its application in catalytic ozonation oxidation decontamination technology. Background technique [0002] With the large-scale development of the pharmaceutical and cleaning industry, the production and use of pharmaceutical and personal care products (PPCPs) have increased rapidly, resulting in their residues in water, air and soil environments. But until the end of the 1990s, they were regarded as a large class of environmental pollutants and received widespread attention. Since PPCPs are continuously input into the environment, their residual concentration in the environment is on the rise (the content is in ng / L~μg / L). Long-term consumption of drinking water containing PPCPs is equivalent to continuous consumption of a certain dose of drugs with unknown side effects. Various chemical substances interact in the human body...

AI Technical Summary

Problems solved by technology

However, the significant advantage of these catalysts is the high catalytic activity in their powder form, but it is not conducive to achieve separation in the aqueous phase, so it is necessary to develop new catalysts that have the characteristics of easy aqueous phase separation while ensuring high catalytic activity

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