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Catalytic ozonation catalyst for treating wastewater, and preparation method thereof

A technology for ozone catalytic oxidation and wastewater treatment, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Catalytic efficiency and other issues to achieve the effect of enhancing adsorption

Pending Publication Date: 2020-06-19
金风环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the ozone catalytic oxidation catalyst in the prior art, because the preparation process determines its high production cost, low catalytic efficiency and low service life, thereby increasing the cost of sewage treatment

Method used

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  • Catalytic ozonation catalyst for treating wastewater, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The first step of impregnation: put the columnar activated carbon carrier with a diameter of 3mm-4mm into the aqueous solution of ethylene glycol, then stir evenly, impregnate for 3 hours, and obtain the intermediate product after filtration. Here, the amount of ethylene glycol added is 0.1 times the sum of the moles of the active components used in the second step of impregnation.

[0039] The second step of impregnation: put the intermediate product impregnated in the first step into a mixed solution (active component precursor solution) composed of Mn metal elements and Cu metal elements with a mass ratio of 1:1, and according to 1kg activated carbon can load The ratio of 1g of Mn metal element and 1g of Cu metal element is used to mix and impregnate the activated carbon carrier and the mixed solution for 3h, and then filter to obtain a pre-product. Here, the manganese precursor used in the second immersion solution is commercially available 50% manganese nitrate sol...

Embodiment 2

[0042] The first step of impregnation: put the columnar activated carbon carrier with a diameter of 3mm-4mm into the aqueous solution of ethylene glycol, then stir evenly and impregnate for 4 hours to obtain an intermediate product. Here, the amount of ethylene glycol added is 10 times the sum of the moles of the active components used in the second step of impregnation.

[0043] The second step of impregnation: put the intermediate product impregnated in the first step into a mixed solution (active component solution) composed of Mn metal elements and Cu metal elements with a mass ratio of 10:1, and according to the fact that 1kg of activated carbon can load 100g of Mn The ratio of the metal element and 10g Cu metal element is used to mix and impregnate the activated carbon carrier and the mixed solution for 24h, and then filter to obtain the pre-product. Here, the manganese precursor used in the second immersion solution is commercially available 50% manganese nitrate soluti...

Embodiment 3

[0046] The first step of impregnation: put the columnar activated carbon carrier with a diameter of 3mm-4mm into the aqueous solution of ethylene glycol, then stir evenly, impregnate for 4 hours, and obtain the intermediate product after filtration. Here, the amount of ethylene glycol added is twice the sum of the moles of the active components used in the second step of impregnation.

[0047] The second step of impregnation: put the intermediate product impregnated in the first step into the mixed solution (active component solution) composed of Mn metal element and Cu metal element with a mass ratio of 5:1, and according to the fact that 1kg of activated carbon can load 50g of Mn The ratio of the metal element and 10g Cu metal element is used to mix and impregnate the activated carbon carrier and the mixed solution for 4h, and then filter to obtain a pre-product. Here, the manganese precursor used in the second immersion solution is commercially available 50% manganese nitra...

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Abstract

The invention provides a catalytic ozonation catalyst for treating wastewater, and a preparation method thereof. The preparation method comprises the following steps: providing an active carbon carrier; carrying out a first impregnation process on the active carbon carrier, and then filtering to obtain an intermediate product, wherein a first impregnation liquid adopted in the first impregnation process comprises a surfactant; performing a second impregnation process on the intermediate product, and then filtering to obtain a filtrate as a pre-product, wherein a second impregnation liquid adopted in the second impregnation process comprises an active component precursor of the catalyst; and drying and roasting the pre-product to obtain the catalyst. According to the method, the hydrophobicity of the surface of active carbon can be modulated, and the organic matter removal capacity is improved.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to an ozone catalytic oxidation catalyst for treating wastewater and a method for preparing the catalyst. Background technique [0002] With the development of industry, the demand for the treatment of refractory industrial wastewater has become increasingly urgent. Refractory substances in industrial wastewater directly determine the up-to-standard discharge and stable operation of sewage treatment plants. Traditional biochemical treatment methods cannot remove toxic and harmful refractory substances in industrial wastewater. Therefore, advanced oxidation water treatment technology must be introduced. [0003] In the advanced oxidation water treatment technology, the ozone catalytic oxidation method belongs to an important branch. Ozone catalytic oxidation is a method of oxidizing macromolecules and organic substances that are difficult to biodegrade into low-toxic...

Claims

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Application Information

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IPC IPC(8): B01J23/889C02F1/72C02F1/78C02F101/30
CPCB01J23/8892C02F1/725C02F1/78C02F2101/30
Inventor 杨琼锋
Owner 金风环保有限公司
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