Method for degrading organic wastewater through heterogeneous ultraviolet catalytic oxidation

A technology for organic wastewater and catalytic oxidation, which is applied in the fields of heterogeneous catalyst chemical elements, chemical instruments and methods, and oxidized water/sewage treatment, etc. The effect of easy magnetic separation

Inactive Publication Date: 2017-05-31
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

When using the chemical co-precipitation method to prepare ferromanganese oxide, although H 2 o 2 It has strong oxidizing properties, but the effect of using it alone to degrade wastewater is not very good, and it cannot be used to the extreme
In addition, the ultraviolet Fenton reaction will produce solid waste that is difficult to separate, difficult to recycle and reuse, and requires acidic conditions to be effective

Method used

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  • Method for degrading organic wastewater through heterogeneous ultraviolet catalytic oxidation
  • Method for degrading organic wastewater through heterogeneous ultraviolet catalytic oxidation

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Experimental program
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Effect test

Embodiment 1

[0022] Preparation of ferromanganese oxide:

[0023] Accurately weigh 27.029g FeCl with an electronic balance 3 ·6H 2 O was dissolved in distilled water, poured into a 100ml volumetric flask to constant volume; accurately weighed 9.895g MnCl with an electronic balance 2 4H 2 O was dissolved in distilled water and poured into a 100ml volumetric flask to constant volume. Pipette 10ml FeCl 3 solution, 5ml MnCl 2 The solution is mixed in a 100ml beaker, and sodium hydroxide is weighed with an electronic balance (sodium hydroxide is measured by Fe 3+ and Mn 2+ 3 times of the amount of substance and take by weighing, slightly more than theoretical value, be made into the solution of mass fraction 10%), dissolve in conical flask with distilled water. Set the water temperature of the constant temperature water bath to 60°C. After the temperature is constant, put the beaker containing the mixed solution and the Erlenmeyer flask containing sodium hydroxide in the constant tempera...

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Abstract

The invention discloses a method for degrading organic wastewater through heterogeneous ultraviolet catalytic oxidation. The method comprises the following steps of firstly preparing manganese ferrite by adopting a chemical co-precipitation method; sequentially adding the manganese ferrite, organic wastewater and hydrogen peroxide to an organic wastewater treatment device; and finally opening an ultraviolet source of the organic wastewater treatment device for radiation treatment of the organic wastewater. Through common action of ultraviolet Fenton reaction, the manganese ferrite and the hydrogen peroxide, the advantages of the ultraviolet Fenton reaction, the manganese ferrite and the hydrogen peroxide are fully developed to obtain a good organic wastewater treatment effect; H2O2 is catalyzed by using ultraviolet light and the manganese ferrite to degrade 50mg/L of 1.2.4-acid-simulated dye wastewater, so that the degradation rate can reach 85.93%; and representation is carried out by virtue of an X-ray diffractometer, and the result shows that the crystal structure of the manganese ferrite is free of an obvious difference before and after wastewater degradation, and the effect of catalytically degrading 1.2.4-acid by the manganese ferrite is free of an obvious change after being used for multiple times.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for heterogeneous ultraviolet photocatalytic oxidation degradation of organic wastewater. Background technique [0002] Ferrite with spinel structure has good chemical activity such as surface adsorption and redox due to its surface charge and valence-changing elements. It can adsorb and degrade refractory organic substances under different media conditions. When using the chemical co-precipitation method to prepare ferromanganese oxide, although H 2 o 2 It has strong oxidizing properties, but the effect of degrading wastewater is not very good when used alone, and it cannot be used to the extreme. In addition, the ultraviolet Fenton reaction will produce solid waste that is difficult to separate, difficult to recycle and reuse, and requires acidic conditions to be effective. Considering that ferromanganese oxide is a mixed-phase spinel, which has adsorption proper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/74C02F1/32C02F1/28C02F1/48B01J23/889C02F101/30
CPCB01J23/002B01J23/8892B01J2523/00C02F1/281C02F1/32C02F1/488C02F1/722C02F1/725C02F1/74C02F2101/30C02F2101/308C02F2305/10
Inventor 原金海邹名明李月吴贤超邓颖石永敬许静邱会东尚娟芳
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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