Method for preparing and applying ozone-enhanced catalysis material

Abstract

The invention relates to a method for preparing and applying an ozone-enhanced catalysis material. The ozone-enhanced catalysis material is boron-modified Fe2O3 and Co3O4 supported meso-porous carbonaerogel concretely. The method comprises the following steps: adding boric acid and an iron solution to raw materials to obtain a boron-modified iron supported meso-porous carbon aerogel precursor, processing the precursor under the protection of argon to obtain aerogel, and allowing cobaltosic oxide to permeate into gaps of the carbon aerogel under the action of capillary tubes by adopting the aerogel as a Co3O4 carrier in order to obtain the boron-modified Fe2O3 and Co3O4 supported meso-porous carbon aerogel catalyst. The material can be used for deep treatment of wastewater, can be fully mixed with the wastewater through dissolved ozone air floatation, ozone micro-bubbles, hydrogen peroxide or ozone micro-bubbles/hydrogen peroxide to realize full contact on the surface of the boron-modified Fe2O3 and Co3O4 supported meso-porous carbon aerogel catalyst, so a lot of hydroxyl free radicals are generated to deeply treat organic pollutants in the water. The method has the characteristicsof large specific surface area and high porosity, and has a high-efficiency catalysis characteristic under the iron and cobalt synergistic catalysis effect.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater and domestic sewage treatment, and in particular relates to a preparation and application method of an ozone-enhanced catalytic material. Background technique [0002] In today's society, due to the rapid growth of urban population and rapid economic development, water demand has increased, water pollution has intensified, and water resources are in short supply. Although my country has the fourth largest fresh water reserves in the world, the per capita water resources are only 2300m 3 Therefore, our country is still listed by the United Nations as one of the 13 water-poor countries in the world. In addition, my country's water pollution is also quite serious: at present, 45% of my country's groundwater is polluted, and more than 90% of cities have serious water pollution. Water pollution further reduces the available fresh water resources. [0003] In response to the water short...

AI Technical Summary

Problems solved by technology

Second, ozone in water hydroxide (OH - ), organic pollutants or some inorganic substances and other initiators to generate hydroxyl radicals (OH ) and indirectly interact with organic pollutants in water. The reaction speed is fast and the selectivity is low. The kinetic constant of the reaction is 10 8 -10 10 Between L / (mol·s)

[0006] Invention patent CN 101380569 B prepares a three-dimensional ordered macroporous carbon material supported titanium dioxide catalyst through capillary and ultrasonic dispersion. The carrier is mainly activated carbon particles obtained by high temperature heat treatment, which has the characteristics of open pores and sufficient contact. , the mutual collision and friction between the granular activated carbon will lead to the wear of the carrier and the loss of titanium dioxide

Treatment of high-concentration zinc chloride waste liquid becomes a limiting factor for the production of this type of catalyst

[0007] In addition, the ozone catalysts on the market generally only support one metal compound with catalytic activity. When the catalytic activity of this compound becomes invalid due to poisoning or fouling, it must be "resurrected" or replaced, which affects the continuous operation of production.

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