A preparation method of an ozone catalytic oxidation catalyst and an ozone catalytic oxidation catalyst prepared by the method

Abstract

The invention discloses a method for preparing an ozone catalytic oxidation catalyst and the catalyst prepared by the method. The preparation method comprises the following steps: pretreating a graphene-doped shaped activated carbon to prepare a shaped activated carbon carrier after acidic oxidation pretreatment; The shaped activated carbon carrier fully and uniformly absorbs the mixed solution of the zinc salt and the cerium salt, and then is dried, treated with microwaves, and roasted to obtain an ozone catalytic oxidation catalyst loaded with multiple composite metal oxides. The catalyst prepared by the method of the present invention has high catalytic activity, the active component and the carrier are firmly combined, and the added graphene can provide more macropores and a rich pore size distribution, and at the same time, it can strengthen the riveting of the formed activated carbon carrier and the transition metal oxide. Combined, reducing seepage, the catalytic activity of the catalyst always maintains high stability in the case of treating wastewater for a long time, the removal rate of organic matter and the effective service life of the catalyst are significantly improved, the preparation process is simple, the raw materials are wide, and the cost is appropriate, which is suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method for preparing an ozone catalytic oxidation catalyst and an ozone catalytic oxidation catalyst prepared by the method. Background technique [0002] While the society is flourishing, the problem of environmental pollution has attracted more and more attention. Among them, the problem of domestic sewage and industrial wastewater treatment needs to be solved urgently. A large amount of toxic and harmful organic substances exist in the sewage system. human living space. At present, the effective removal of organic pollutants in water has become a hot research direction in the field of water treatment. [0003] In the field of water treatment, ozone itself has strong oxidizing properties and can react with some organic matter to disinfect, decolorize, and deodorize sewage. However, the cost of ozone generation is relatively high and a single ozone o...

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Problems solved by technology

[0004] However, there are the following problems in the actual use of various catalysts: first, the low catalytic activity of the catalyst cannot meet the demand, and the use cost is high; secondary pollution; third, the continuous loss of catalyst active substances leads to a reduction in the catalytic efficiency and capacity of the catalyst, and the effective service life of the catalyst is greatly reduced

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