Catalytic ozonation catalyst and preparation method thereof

An ozone catalytic oxidation and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the difficulty of catalyst regeneration, incomplete organic matter treatment, and treatment costs. High problems, to achieve the effect of shortening the reaction residence time, the removal effect is remarkable, and the preparation process is simple

Inactive Publication Date: 2019-07-26
四川恒泰环境技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is: in order to solve the above problems, the present invention provides an ozone catalytic oxidation catalyst and a preparation method thereof. The catalyst prepared by the method of the present invention solves the problem of high processing cost of wastewater containing refractory organic matter in the existing process and the high cost of organic matter treatment. Incomplete, difficult catalyst regeneration and other technical problems

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  • Catalytic ozonation catalyst and preparation method thereof
  • Catalytic ozonation catalyst and preparation method thereof
  • Catalytic ozonation catalyst and preparation method thereof

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Embodiment 1

[0037] A kind of preparation method of ozone catalytic oxidation catalyst that preferred embodiment of the present invention provides, concrete steps are as follows:

[0038] (1) Wash columnar granular activated carbon with a diameter of 3-5mm and a length of 1-2cm and spherical granular activated carbon with a diameter of 3-5mm to remove impurities in sequence, and place them in a 100°C oven for drying after cleaning to obtain two types of activated carbon. active particles;

[0039] (2) Add 1mol / L sodium hydroxide solution to the two types of active particles according to the ratio of 10g active particles: 50mL sodium hydroxide solution, stir and mix for 2 hours, soak for 6 hours, take out and wash with water until the pH value of the cleaning solution reaches 7. Place it in an oven and dry it at 100°C, and cool it at room temperature to obtain two types of pretreated activated carbon carriers;

[0040] (3) The two types of pretreated activated carbon carriers were impregna...

Embodiment 2

[0043] A kind of preparation method of ozone catalytic oxidation catalyst that preferred embodiment of the present invention provides, concrete steps are as follows:

[0044] (1) Wash the spherical granular activated carbon with a diameter of 3-5mm to remove impurities, place it in a 100°C oven for drying after cleaning, and obtain active particles;

[0045] (2) Add 1mol / L sodium hydroxide solution to the active granules according to the ratio of 10g active granules: 50mL sodium hydroxide solution, stir and mix for 3 hours, soak for 6 hours, take out and wash with water until the pH value of the cleaning solution reaches 6.5, and then place it in Dry in an oven at 100°C and cool at room temperature to obtain a pretreated activated carbon carrier;

[0046] (3) impregnate the pretreated gac carrier with mass fraction of 8% ferric nitrate, 8% manganese nitrate, 8% ferric nitrate and manganese nitrate mixed solution, stir for 2h, let stand for 24h, take out the solid components an...

Embodiment 3

[0049] A kind of preparation method of ozone catalytic oxidation catalyst that preferred embodiment of the present invention provides, concrete steps are as follows:

[0050] (1) Wash the spherical granular activated carbon with a diameter of 3-5mm to remove impurities, place it in a 100°C oven for drying after cleaning, and obtain active particles;

[0051] (2) Add 1mol / L sodium hydroxide solution to the active granules according to the ratio of 10g active granules: 50mL sodium hydroxide solution, stir and mix for 3 hours, soak for 6 hours, take out and wash with water until the pH value of the cleaning solution reaches 6.5, and then place it in Dry in an oven at 100°C and cool at room temperature to obtain a pretreated activated carbon carrier;

[0052] (3) impregnating the pretreated activated carbon carrier with a ferric nitrate solution with a mass fraction of 8%, stirring for 2 hours, standing for 24 hours, taking out the solid component and putting it in an oven at 100°...

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Abstract

The invention discloses a catalytic ozonation catalyst and a preparation method thereof. The preparation method includes following steps: (1), using activated carbon to wash for removing impurities; (2), modifying an activated carbon carrier; (3), soaking an active component to prepare a catalyst precursor; (4), calcining the catalyst precursor to obtain the catalytic ozonation catalyst. The catalytic ozonation catalyst prepared by the preparation method can be used for treating domestic sewage or industrial wastewater containing degradation-resistant organic matter, removal rate of high-degradation-difficulty organic matter in wastewater can reach higher than 95%, and the catalytic ozonation catalyst has the advantages of being efficient, environment-friendly, wide in application range and long in service life.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment and catalyst preparation, and in particular relates to an ozone catalytic oxidation catalyst and a preparation method thereof. Background technique [0002] With the rapid development of my country's industrialization process, the amount of wastewater generated by industrial activities has also increased sharply. However, the composition of industrial wastewater is complex, especially many complex organic compounds with large molecules are difficult to completely treat with existing methods or the treatment cost is too high for enterprises to afford. High organic (double high) wastewater has become a major environmental bottleneck restricting the development of the industry. [0003] In addition, the available clean water resources are decreasing day by day, the public's awareness of environmental protection and environmental protection requirements are also increasing, and in recent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/889C02F1/78C02F101/30C02F103/28C02F103/30C02F103/36
CPCB01J23/745B01J23/8892C02F1/725C02F1/78C02F2305/02C02F2101/30C02F2103/365C02F2103/30C02F2103/28
Inventor 章慧黄文凤向迎洪杨汉军欧朝张亚明雷成
Owner 四川恒泰环境技术有限责任公司
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