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Ozone oxidation catalyst based on active carbon carrier and preparation method thereof

A technology of ozone oxidation and activated carbon, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Reduced ozone dosage, reduced operating costs, and efficient removal effects

Inactive Publication Date: 2019-02-26
光大水务(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide an activated carbon carrier-based ozone oxidation catalyst and its preparation method, aiming to solve the problem that the existing activated carbon carrier-based ozone oxidation catalyst is difficult to catalyze and oxidize nbsCOD, and then it is difficult to efficiently achieve low COD in the process of sewage treatment. Problems with 30mg / L

Method used

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  • Ozone oxidation catalyst based on active carbon carrier and preparation method thereof
  • Ozone oxidation catalyst based on active carbon carrier and preparation method thereof
  • Ozone oxidation catalyst based on active carbon carrier and preparation method thereof

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preparation example Construction

[0022] And, the embodiment of the present invention also provides a kind of preparation method of the ozone oxidation catalyst based on active carbon carrier, comprises the following steps:

[0023] S01. Provide an activated carbon carrier, dry it, and test the water absorption of the dried activated carbon carrier;

[0024] S02. The activated carbon carrier is placed in a container, and the precursor solution of the metal oxide is added by an equal-volume impregnation method, and the metal oxide precursor is adsorbed and then dried;

[0025] S03. Put the activated carbon carrier adsorbed with the metal oxide precursor into a heating device, and under the protection of an inert atmosphere, heat-preserve and calcinate at 300-650°C for 3-10 hours, and obtain an ozone oxidation catalyst based on the activated carbon carrier after aging treatment.

[0026] Specifically, in the above step S01, preferably, the activated carbon carrier has a diameter of 0.5-3mm and a specific surface...

Embodiment 1

[0039] The diameter is 0.88-2.36mm, the specific surface area (BET)>500m 2 / g of activated carbon carrier, put it in a drying oven and dry it at 120°C. Put the weighed activated carbon carrier into the ferric nitrate solution for immersion treatment, put the activated carbon carrier adsorbed on the ferric nitrate into a drying oven and dry at 100°C for 12h. The dried samples were placed in a resistance furnace and raised to 400°C for calcination, kept for 4 hours, and aged for 24 hours to obtain Fe 2 o 3 Ozone oxidation catalyst with a loading of 3%.

Embodiment 2

[0041] The diameter is 0.88-2.36mm, BET>500m 2 / g of activated carbon carrier, put it in a drying oven and dry it at 100°C. Put the weighed activated carbon carrier into the manganese nitrate solution for impregnation treatment, and stir for 2 hours. The activated carbon carrier adsorbed manganese nitrate was put into a drying oven and dried at 120°C for 12h. The dried samples were placed in a resistance furnace and raised to 500°C for calcination, kept for 6 hours, and aged for 24 hours to obtain MnO 2 Ozone oxidation catalyst with a loading of 5%.

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Abstract

The invention provides an ozone oxidation catalyst based on an active carbon carrier. The ozone oxidation catalyst based on the active carbon carrier is an active carbon-supported metal oxide, whereinthe metal oxide is at least one selected from a group consisting of iron oxide, copper oxide, ruthenium oxide, cerium oxide, cobalt oxide, manganese oxide and nickel oxide.

Description

technical field [0001] The invention belongs to the technical field of ozone catalytic oxidation, and in particular relates to an active carbon carrier-based ozone oxidation catalyst and a preparation method thereof. Background technique [0002] With the development of industry, more and more industrial wastewater enters the sewage pipe network. At the same time, there are more and more urban sewage treatment plants and sewage treatment plants in industrial parks that mainly use industrial wastewater. As the environmental protection situation becomes more and more serious, the requirements for the effluent water quality of urban sewage treatment plants are becoming more and more stringent. In the secondary treatment of conventional sewage treatment plants, biochemical treatment has removed most of the biodegradable COD, and the rest is mainly soluble non-degradable organic matter (nbsCOD). With the full implementation of the first-level A standard, even some economically de...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J23/75B01J23/656B01J23/889B01J35/10B01J37/02B01J37/08C02F1/78
CPCC02F1/725C02F1/78B01J23/002B01J23/6562B01J23/745B01J23/75B01J23/8892B01J37/0201B01J37/088B01J35/617B01J35/615
Inventor 石伟牛克胜杜庆洋蒋延梅刘爱宝荣颖慧刘晓静
Owner 光大水务(深圳)有限公司
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