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Catalytic ozonation catalyst, preparation method thereof and sewage treatment method

An ozone oxidation and catalyst technology, which is applied in the directions of oxidized water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost of precious metals, expensive catalysts, etc., and achieves simple and cost-effective preparation methods. Inexpensive, easy-to-industrial effect

Pending Publication Date: 2020-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heterogeneous catalysts have a long service life and are easy to separate and recover. Among them, supported catalysts with noble metals as active components show high activity and stability. However, due to the high cost of noble metals, such catalysts are often expensive

Method used

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  • Catalytic ozonation catalyst, preparation method thereof and sewage treatment method
  • Catalytic ozonation catalyst, preparation method thereof and sewage treatment method

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preparation example Construction

[0020] According to the second aspect of the present invention, the preparation method of the catalytic ozonation catalyst comprises: impregnating FCC waste with a solution containing a soluble compound of at least one metal selected from Group IIA, Group IB, Group VIIB, Group VIII and rare earth elements. Catalyst carrier, drying and calcining the impregnated FCC waste catalyst carrier.

[0021] In the method of the present invention, only the preparation method of the catalytic ozone oxidation catalyst is described, and the same technical features as those in the catalytic ozone oxidation catalyst product are not described repeatedly.

[0022] According to the present invention, preferably, the preparation method further includes: before impregnating, first roasting the spent FCC catalyst carrier, and subjecting the roasted spent FCC catalyst carrier to acid treatment. The purpose of roasting the FCC waste catalyst first is to remove some of the carbon deposits attached to t...

preparation example 1

[0053] The pretreatment step of the catalyst carrier: put the spent FCC catalyst into a muffle furnace, and bake it at 700° C. for 3 hours. Configure a hydrochloric acid aqueous solution with a mass fraction of 8%, the mass ratio of the FCC waste catalyst to the hydrochloric acid aqueous solution is 1:5, add it to a reaction flask with a reflux device, control the heating temperature of the water bath and the magnetic stirring speed at 60°C and 1000r / min, and carry out Acid treatment for 2.5h. After the reaction is completed, wash with deionized water until the pH value does not change, put it into a vacuum drying oven, and dry at 105° C. for 8 hours.

[0054]Impregnation step: take magnesium nitrate and deionized water to prepare an impregnation solution with a concentration of 0.6mol / L, add it to the spent FCC catalyst, stir evenly, and impregnate at room temperature for 12 hours. After the impregnation is completed, put it into a drying oven and dry it at 115°C for 12 hour...

Embodiment 1

[0057] Take 1L phenol sewage water sample, take 1g / L catalytic ozonation catalyst C1, and continuously aerate in the catalytic ozonation reaction, the dosage of ozone is 2g / L sewage, the reaction temperature is 30°C, and the reaction time is 100min.

[0058] The phenol sewage water sample is 500mg / L simulated phenol sewage, the initial pH value is 6.34, the initial COD is 1187.04mg / L, and the initial phenol content is 457.36mg / L. After 100 minutes of reaction, the removal rate of phenol reached 98.94%, and the removal rate of COD reached 80.45%.

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Abstract

The invention relates to the field of waste treatment and sewage treatment, and discloses a catalytic ozonation catalyst, a preparation method thereof and a sewage treatment method. The catalytic ozonation catalyst contains a carrier and a metal active component loaded on the carrier, wherein the carrier is an FCC waste catalyst, and the metal active component is selected from at least one metal of IIA group, IB group, VIIB group, VIII group and rare earth elements. According to the recycling method of the FCC waste catalyst provided by the invention, the FCC waste catalyst is used as a carrier to prepare a new supported catalytic ozonation catalyst, a novel method is provided for treatment of the FCC waste catalyst, and treatment of wastes with processes of wastes against one another is realized. The supported catalytic ozonation catalyst prepared by taking the FCC waste catalyst as the carrier is applied to catalytic oxidation treatment of sewage, especially phenol-containing sewage,and the effect is remarkable.

Description

technical field [0001] The invention relates to the fields of waste treatment and sewage treatment, in particular to a catalytic ozone oxidation catalyst, a preparation method thereof and sewage, especially a treatment method for phenol-containing sewage. Background technique [0002] Catalytic cracking (FCC) process is an important process in petroleum refining and one of the main processing technologies for lightening heavy oil. Due to the widespread use of catalytic cracking technology in the country, FCC catalyst has become the catalyst with the largest consumption. The annual consumption of FCC catalyst is about 350kt. The spent catalyst discharged contains metals such as rare earth oxide, iron vanadium and iron, which are solid waste. The main treatment method of FCC waste catalyst is still the traditional landfill method, which will not only cause resource waste, but also cause soil, groundwater, and air pollution. In recent years, the recycling and utilization of FC...

Claims

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Application Information

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IPC IPC(8): B01J23/847B01J23/889B01J23/89C02F1/78C02F101/34
CPCB01J23/8472B01J23/8892B01J23/898C02F1/78C02F1/725C02F2101/345
Inventor 刘祺李本高陈妍
Owner CHINA PETROLEUM & CHEM CORP