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Catalyst for oxidation and decomposition of organic pollutants in water with ozone and method thereof for catalyzing sewage treatment with ozone

A technology for the oxidation of organic pollutants and ozone, which is applied in the direction of oxidized water/sewage treatment, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. Low, there are problems such as the dissolution of impurities, to achieve the effect of improving biodegradability, high catalytic activity, and high mechanical strength

Inactive Publication Date: 2011-08-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems that existing catalysts for organic pollution in water decomposed by solid ozonation are easy to be oxidized and decomposed by ozone, have low strength, are easily broken, have impurities leached out, have low catalytic efficiency and are difficult to recycle, and provide a catalyst for organic pollution in water decomposed by ozonation. Catalyst and method for catalytic ozone treatment of sewage

Method used

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  • Catalyst for oxidation and decomposition of organic pollutants in water with ozone and method thereof for catalyzing sewage treatment with ozone
  • Catalyst for oxidation and decomposition of organic pollutants in water with ozone and method thereof for catalyzing sewage treatment with ozone

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specific Embodiment approach 1

[0014] Specific implementation mode one: The catalyst for the ozone oxidation decomposition of organic pollutants in this embodiment is spinel ferrite NiFe 2 o 4 , MnFe 2 o 4 , CoFe 2 o 4 , ZnFe 2 o 4 , MgFe 2 o 4 , CuFe 2 o 4 , CrFe 2 o 4 , PbFe 2 o 4 , SrFe 2 o 4 , BaFe 2 o 4 and CaFe 2 o 4 one or a combination of two of them.

[0015] In this embodiment, when the catalyst for oxidizing and decomposing organic pollutants in water is a composition, the spinel ferrites are combined in any ratio.

[0016] The preparation method of the catalyst for the ozone oxidation decomposition of organic pollutants in the present embodiment is carried out according to the following steps: a, after egg white is stirred at room temperature for 30 minutes, a uniform egg white solution is obtained; b, according to the molecular formula of spinel ferrite The atomic number ratio of metal elements Weigh the nitrates of metal elements, wherein the mass volume ratio of ferric ni...

specific Embodiment approach 2

[0018] Specific implementation mode two: the catalyst for the ozone oxidation decomposition of organic pollutants in this embodiment is spinel ferrite M 1-x N x Fe 2 o 4 , wherein 0<x<1, M and N are any of metal elements Ni, Mn, Co, Zn, Mg, Cu, Cr, Pb, Sr, Ba and Ca, and M and N are different elements.

[0019] The preparation method of the catalyst for the ozone oxidation decomposition of organic pollutants in the present embodiment is carried out according to the following steps: a, stir the egg white at room temperature for 30 minutes to obtain a uniform egg white solution; b, press the metal in the spinel ferrite molecular formula The atomic number ratio of the elements Weigh the nitrate of the metal element, wherein the mass volume ratio of ferric nitrate to the egg white solution is 0.2g: 1mL, add the metal nitrate to the egg white solution obtained in step a, and then place it in a water bath at 80°C , stirring for 2h to 3h to obtain the mixture; c, roasting the mixt...

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment two is: spinel ferrite M 1-x N x Fe 2 o 4 0.1

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Abstract

The invention discloses a catalyst for oxidation and decomposition of organic pollutants in water with ozone and a method thereof for catalyzing sewage treatment with ozone, and relates to a catalyst for decomposing the organic pollutants in water and the method thereof for sewage treatment. By adopting the catalyst, the problems that the traditional solid catalyst for catalyzing the decomposition of organic pollutants in the water with ozone is easy to be oxidized and decomposed by ozone, easy to break, can dissolve out impurities, has low strength and low catalytic efficiency and is difficult to recover can be solved. The catalyst for oxidation and decomposition of the organic pollutants in the water with ozone refers to spinel ferrite or a composite of spinel ferrite; and the method of the catalyst for catalyzing the sewage treatment with ozone comprises the following steps of: adjusting pH and temperature of sewage, then introducing ozone, further adding the catalyst and treating for 1 minute-120 minutes, then using a magnetic field to recover the catalyst, and finally absorbing tail gas of the ozone. The catalyst can improve the removal rate of organic matters to 90%-100%, and can be used for sewage treatment or deep treatment of drinking water.

Description

technical field [0001] The invention relates to a catalyst for decomposing organic pollutants in water and a method for treating sewage. Background technique [0002] With the rapid development of the global economy, the problem of water resource shortage has become increasingly prominent. Many rivers, reservoirs, coastal waters, and groundwater have been polluted to varying degrees, reducing the function and role of drinking water sources. Serious water organic pollutants, especially refractory pollutants such as environmental estrogen, have been proven to pose serious hazards to human health and the ecological environment. These refractory organic pollutants are widely distributed in water bodies. With the improvement of people's living standards and drinking water quality standards, traditional water supply treatment technologies such as adsorption methods, membrane methods, and ozone active The carbon method can no longer effectively meet the requirements of removing or...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/889B01J23/75B01J23/80B01J23/78B01J23/745B01J23/86B01J23/835A62D3/38C02F1/78
Inventor 马军任月明冯静董清温青张亚菲杨静
Owner HARBIN INST OF TECH
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