Preparation method of metal loaded catalyst with aluminum silicate as carrier

Abstract

The invention discloses a preparation method of a metal loaded catalyst with aluminum silicate as a carrier. The preparation method comprises steps as follows: kaolin powder, aluminum hydroxide powder, metal ion active components and a pore forming agent are sufficiently mixed by a stirring machine, the mixed components are conveyed to a sugarcoating machine and sprayed with an adhesive, and the mixed powder is made into shaping catalyst precursors with the particle size being 2-4 mm and then subjected to drying, preheating, constant high-temperature roasting and natural cooling. The preparation method has the characteristics that the preparation method is simple, safe and environment-friendly and raw materials are easy to obtain; during sewage deep treatment, the catalyst increases the utilization rate of ozone in the application of an ozone catalytic oxidation technique, shortens the retention time of the process and also has very high oxidation efficiency when used for treating certain sewage with high salt content, such as reverse osmosis bimodal concentrated water, papermaking wastewater, printing and dyeing wastewater and oil production wastewater.

Description

technical field [0001] The invention relates to a method for preparing a metal-supported catalyst, in particular to a method for preparing a metal-supported catalyst with aluminum silicate as a carrier. Background technique [0002] In recent years, with the development of industry, some biodegradable or toxic organic pollutants in industrial wastewater (such as RO membrane concentrated water, oil extraction wastewater, pesticides, synthetic detergents and wastewater from certain dye industries, etc.) are difficult to be biologically It is difficult to degrade and discharge industrial wastewater from nature to meet my country's current environmental protection requirements. In order to protect the environment and water resources can be recycled and reused, industrial wastewater needs to undergo three-stage advanced treatment to meet the requirements of water pollution control and wastewater reuse. [0003] As one of the effective means of advanced wastewater treatment, ozone...

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Problems solved by technology

However, ozone oxidation has strong selectivity, and is especially favored for organic substances containing double bonds, and the oxidation rate is extremely fast, while the oxidation rate for organic substances without double bonds is very slow, even the oxidation rate is lower than the decomposition rate of ozone, and the oxidation efficiency is very low

[0004] For the problem that the efficiency of ozone oxidation cannot meet the treatment requirements stably, how to enhance the oxidation efficiency of ozone and change the selectivity of ozone to organic pollutants, the ozone catalytic oxidation process will change a series of problems such as low ozone utilization rate and selectivity, while catalytic The core problem of oxidation is the catalyst

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