Ozone oxidation catalyst for degradation of organic wastewater and preparation method thereof

A technology for ozone oxidation and organic wastewater, which is applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. The problem of excessive consumption can achieve the effect of saving operating costs, reducing production costs and good practical effects.

Active Publication Date: 2018-06-29
JIANGXI HUIHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts are used for sewage treatment, so higher strength is required, and the preparation method to increase strength is generally achieved by high-temperature roasting above 600°C, but roasting the active components of existing catalysts above 600°C will cause activity attenuation. Iron oxide or manganese oxide will form iron aluminate, manganese aluminate, iron titanate and manganese titanate with carrier alumina or titanium oxide at high temperature, which will make the active components iron oxide and manganese oxide deteriorate, thus maki

Method used

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  • Ozone oxidation catalyst for degradation of organic wastewater and preparation method thereof
  • Ozone oxidation catalyst for degradation of organic wastewater and preparation method thereof
  • Ozone oxidation catalyst for degradation of organic wastewater and preparation method thereof

Examples

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Example Embodiment

[0023] Example one

[0024] Prepare the ozone oxidation catalyst for the degradation of organic wastewater according to the following steps:

[0025] 1) Preparation of composite carrier: The target composition of the composite carrier is calculated by mass percentage: 83% titanium oxide; 13% zirconium oxide; 4% lanthanum oxide; weigh the titanium oxide powder and the zirconium oxide powder according to the above-mentioned ratio and mix thoroughly Then, microwave heating to a temperature of 90 ℃ under the condition of soaking 18% mass percentage lanthanum nitrate solution for 24 hours, then aging for 24 hours, drying at a temperature of 110 ℃ until the moisture content is less than 1wt%, and then roasting at 500 ℃ 4 hours, the particle size of ball mill powder is less than 20 microns to prepare composite carrier powder;

[0026] 2) Preparation of active powder: using microwave heating dipping method, the composite carrier prepared in step 1) is immersed in the dipping solution for 24...

Example Embodiment

[0028] Example two

[0029] Prepare the ozone oxidation catalyst for the degradation of organic wastewater according to the following steps:

[0030] 1) Preparation of composite carrier: The target composition of the composite carrier is calculated by mass percentage: 84% titanium oxide; 13% zirconium oxide; 3% lanthanum oxide; weigh the titanium oxide powder and the zirconium oxide powder according to the above-mentioned ratio and mix thoroughly Then, microwave heating to a temperature of 90 ℃ under the condition of soaking 18% mass percentage lanthanum nitrate solution for 24 hours, then aging for 24 hours, drying at a temperature of 110 ℃ until the moisture content is less than 1wt%, and then roasting at 500 ℃ 4 hours, the particle size of ball mill powder is less than 20 microns to prepare composite carrier powder;

[0031] 2) Preparation of active powder: using microwave heating dipping method, the composite carrier prepared in step 1) is immersed in the dipping solution for 24...

Example Embodiment

[0033] Example three

[0034] Prepare the ozone oxidation catalyst for the degradation of organic wastewater according to the following steps:

[0035] 1) Preparation of composite carrier: The target composition of the composite carrier is calculated by mass percentage: 83% titanium oxide; 13% zirconium oxide; 4% lanthanum oxide; weigh the titanium oxide powder and the zirconium oxide powder according to the above-mentioned ratio and mix thoroughly Then, microwave heating to a temperature of 90 ℃ under the condition of soaking 18% mass percentage lanthanum nitrate solution for 24 hours, then aging for 24 hours, drying at a temperature of 110 ℃ until the moisture content is less than 1wt%, and then roasting at 500 ℃ 4 hours, the particle size of ball mill powder is less than 20 microns to prepare composite carrier powder;

[0036] 2) Preparation of active powder: using microwave heating dipping method, the composite carrier prepared in step 1) is immersed in the dipping solution for ...

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Abstract

The invention discloses an ozone oxidation catalyst for degradation of organic wastewater, wherein the ozone oxidation catalyst is prepared from the following raw materials by the mass percentage: 93-96.5% of an active powder, 0.3-1% of graphite, 1.2-3% of a pore forming agent, and 2-3% of a binder, wherein the sum of the mass percentages of the components is 100%. The contradiction between the 'catalyst activity' of a conventional catalyst and 'obtaining of high strength by high temperature roasting' is solved effectively; the resistance of the catalyst in operation is greatly reduced, and the operation cost is saved for users; at the same time, the bulk density has a certain decrease compared with that of a conventional catalyst, the raw materials are saved for manufacturers, the production cost is reduced and good practical results are achieved.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to an ozone oxidation catalyst for organic waste water degradation and a preparation method thereof. Background technique [0002] Catalytic ozonation water treatment technology is an advanced oxidation technology based on ozone. It combines the strong oxidation of ozone with the adsorption and catalytic properties of catalysts, which can effectively solve the problem of incomplete degradation of organic matter in sewage and open up new opportunities for COD emission standards. a new way. The heterogeneous catalytic ozonation method uses an ozone oxidation catalyst to accelerate the oxidation reaction between the liquid phase and the gas phase under normal pressure. The catalyst exists in a solid state and is installed in the oxidation reaction tower or reaction pool. It is easy to separate from water and has less secondary pollution. Therefore, more and more people pay more and ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J35/10C02F1/72C02F1/78
CPCB01J23/002B01J23/8892B01J35/10C02F1/725C02F1/78
Inventor 王育华郭松林彭江山王育林唐亮
Owner JIANGXI HUIHUA TECH CO LTD
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