Preparation method of high-performance and high-stability ozone catalyst

Abstract

The invention relates to a preparation method of a high-performance and high-stability ozone catalyst. A TiO2 ozone catalyst with Fe and Mn loaded bimetals as an active center is used for catalyzing ozone oxidation, so that the sewage treatment effect of the catalyst is improved, and compared with a catalyst only loaded with a single metal, the removal rate of ammonia nitrogen in sewage is obviously improved; and the bimetallic Mn-Fe / TiO2 catalyst with high ozone catalytic activity is prepared by adopting an impregnation method, and the specific surface area and active sites of the catalyst are increased by adopting an ordered nano mesoporous structure of the bimetallic Mn-Fe / TiO2 catalyst. In the process of catalyzing ozone to oxidize and degrade ammonia nitrogen, the removal rate is two times that of a single metal, the ozone catalytic oxidation performance is high, the reaction speed is high, the stability is high, the biodegradability and chromaticity of degradation-resistant wastewater are obviously removed, the biodegradability of sewage subjected to ozone catalytic oxidation treatment is obviously improved, an ozone decomposition product is oxygen, secondary pollution is avoided, and dissolved oxygen in water can be increased.

Description

technical field [0001] The invention relates to the field of ozone catalytic oxidation, in particular to a preparation method of a high-performance and high-stable ozone catalyst. Background technique [0002] Ozone catalytic oxidation technology is an efficient sewage advanced treatment technology, and it has become a research hotspot in the field of industrial sewage in recent years. Ozone catalytic oxidation is the addition of catalysts in the presence of ozone to accelerate the production of hydroxyl radicals by ozone and improve the ability of ozone to directly oxidize pollutants. The structure of existing ozone catalyst materials is uncontrollable, does not have high specific surface area and high stability, has poor application prospects, and sometimes the working effect cannot meet the sewage discharge requirements. [0003] Currently commonly used oxidation technologies mainly include electrochemical oxidation, wet catalytic oxidation, photocatalytic oxidation, ozo...

AI Technical Summary

Problems solved by technology

The structure of existing ozone catalyst materials is uncontrollable, does not have high specific surface area and high stability, the application prospect is not good, and sometimes the working effect cannot meet the sewage discharge requirements

[0003] Currently commonly used oxidation technologies mainly include electrochemical oxidation, wet catalytic oxidation, photocatalytic oxidation, ozone catalytic oxidation, ultrasonic oxidation, supercritical water oxidation, etc., but they all have certain instability. The waste water is small in scale, low in treatment efficiency, and high in energy consumption; the waste water in the wet catalytic oxidation technology cannot contain a large amount of substances that deactivate the catalyst and substances that are easy to block the pipeline. If there is any, it needs to be done before the reaction processing, and so on a series of restrictive issues

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