Preparation method of catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater

A coal chemical wastewater and advanced treatment technology, applied in the direction of catalyst activation/preparation, oxidized water/sewage treatment, physical/chemical process catalysts, etc., can solve the problems of poor water solubility and low degradation rate of ozone, and achieve low cost, good physical Effect of improving structure and biodegradability

Inactive Publication Date: 2013-05-22
HARBIN INST OF TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of poor ozone water solubility and low degradation rate in the existing ozone oxidation method, and to provide a preparation method of catalyst for advanced treatment of coal chemical industry wastewater by catalytic ozone oxidation

Method used

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  • Preparation method of catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater
  • Preparation method of catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater
  • Preparation method of catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater

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specific Embodiment approach 1

[0023] Embodiment 1: In this embodiment, the preparation method of catalyst for advanced treatment of coal chemical industry wastewater by catalytic ozonation is carried out according to the following steps:

[0024] 1. Wash activated carbon particles with a particle size of 2-3nm until the pH value of the washing solution does not change, and then dry at 105-110°C for 5 hours;

[0025] 2. Immerse the activated carbon treated in step 1 in the metal nitrate solution, the ratio of activated carbon to the metal nitrate solution is 1:20, the concentration of the metal nitrate solution is 0.05mol / L, and then 180-200 rpm Take out the activated carbon after oscillating at a certain speed and mixing for 12 hours;

[0026] 3. Put the activated carbon into the muffle furnace after drying at 105-110°C, use nitrogen as the protective gas, first heat up to 200°C, roast for 1 hour, continue to heat up to 600°C, and roast at 600°C for 3 hours to obtain The catalyst for the advanced treatmen...

specific Embodiment approach 2

[0028] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the metal nitrate solution described in step two is ferric nitrate solution, copper nitrate solution, manganese nitrate solution, aluminum nitrate solution, chromium nitrate solution, zinc nitrate solution one or a combination of several. Others are the same as in the first embodiment.

[0029] In the present embodiment, when the metal nitrate solution is a composition, the ratios between the components are arbitrary.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that in step 1, drying is performed at 108° C. for 5 hours. Others are the same as those in the first or second embodiment.

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Abstract

The invention discloses a preparation method of a catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater and relates to a preparation method for the catalyst. The preparation method is used for solving the technical problems that the existing ozonation method is poor in ozone water solubility and low in degradation rate, successfully applied to the advanced treatment of the coal chemical wastewater, and capable of removing the degradation-resistant hazardous substances in water, improving the biodegradability of the wastewater and enabling the quality of the outlet water to reach the first-grade national emission standards. The preparation method comprises the following steps of: firstly, washing active carbon particles; secondly, soaking the active carbon in a metal nitrate solution, shaking for mixing and reacting, and taking out the active carbon 12 hours later; and thirdly, drying the active carbon and putting the dried active carbon to a muffle furnace, heating the muffle furnace to 200 DEG C by adopting nitrogen gas as the protective gas, roasting for one hour, continuing heating the muffle furnace to 600 DEG C and roasting for 3 hours at 600 DEG C to obtain the catalyst for treating the coal chemical wastewater. By using the catalyst prepared by the preparation method disclosed by the invention, the utilization rate of ozone is greatly improved, and the catalyst is very suitable for the field of coal chemical wastewater treatment.

Description

technical field [0001] The invention relates to a preparation method of a catalyst. Background technique [0002] my country's energy status is more coal and less oil. The third national coal resource forecast and evaluation pointed out that China's total coal resources are about 5.57 trillion tons, ranking first in the world. How to make full use of coal resources is the key to alleviating my country's energy crisis links. Modern coal chemical technology is based on coal-energy chemical technology, with coal gasification as the leader, and uses advanced chemical technologies such as catalytic synthesis, separation, and biochemical engineering to produce clean energy and various chemical products that can replace petroleum. And population growth has played an important role in the contradiction between the supply and demand of high-quality energy such as oil and natural gas. However, the production process of the coal chemical industry is complex and complex, and consumes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J23/72B01J23/745B01J21/18B01J37/02C02F1/78
Inventor 韩洪军庄海峰赵茜张凌翰方芳徐春燕
Owner HARBIN INST OF TECH
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