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Processing method of heterocatalysis persulfate Fenton oxidation water

A persulfate, heterogeneous catalysis technology, applied in the direction of oxidation water/sewage treatment, etc., to achieve the effects of environmental friendliness, easy control, and simple operation methods

Inactive Publication Date: 2011-04-20
HUAZHONG NORMAL UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

There are only related patents on homogeneous sulfuric acid free radical oxidation in China

Method used

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Examples

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Effect test

Embodiment 1

[0032] Example 1: Heterogeneous Catalytic Persulfate Fenton Oxidation Treatment of Explosives Wastewater

[0033] Take 400mL of explosive waste water after flocculation, pH=5, COD is 1597mg / L. 10 mg of sodium persulfate and 10 mg of ferric oxide were added to the waste water. After 60 minutes, the COD of the waste water was 296 mg / L, and the removal rate of organic pollutants was as high as 80%.

Embodiment 2

[0034] Example 2: Heterogeneous Persulfate Fenton Catalyzed Oxidation Treatment of Leather Wastewater

[0035] Take 400mL of leather wastewater, adjust the pH to 2, and COD to 3500mg / L. 20 mg of potassium persulfate and 15 mg of cerium oxide were added to the waste water. After 60 minutes, the COD of the waste water was 912 mg / L, and the removal rate of organic pollutants was greater than 70%.

Embodiment 3

[0036] Example 3: Heterogeneous Persulfate Fenton Catalytic Oxidation Treatment of Printing and Dyeing Wastewater

[0037] Take 400mL of printing and dyeing wastewater, adjust the pH to 5, and the COD is 764mg / L. Add 15 mg of ammonium persulfate and 7.5 mg of dicobalt trioxide to the waste water. After 60 minutes, the COD of the waste water is 218 mg / L, and the removal rate of organic pollutants is about 70%.

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Abstract

The invention proposes a processing technology of heterocatalysis persulfate Fenton oxidation water. In the method, transitional metal, transitional metallic oxide and a transitional metal / transitional metallic oxide composite material are used as out-phase Fenton reagents; and persulfate is catalyzed and decomposed to generate hydroxyl radical free radical, thus oxidizing to remove the organic matters in the waste water. Compared with the water treatment technique of homogeneous phase persulfate, the out-phase transitional metal and the transition metal oxide catalyst can slowly release transitional metal icons, thus ensuring that the organic matters in the water are purified lastingly and efficiently by the processing method of the heterocatalysis persulfate Fenton oxidation water. The processing technology of heterocatalysis persulfate Fenton catalyzed oxidation water built by the invention is suitable for processing various organic wastewater, has the advantages of good durability, high efficiency, environmentally friendliness, and no secondary pollution, is easy to operate, conforms to the requirements of actual water treatment units, and has great application potential in the field of environmental pollution regulation.

Description

technical field [0001] The invention relates to a method for removing organic matter in water through heterogeneously catalyzed persulfate Fenton oxidation, and belongs to the technical field of water pollution control. Background technique [0002] Advanced oxidation water treatment technology can oxidize and degrade organic matter through the generation of hydroxyl radicals (·OH). Among them, Fenton oxidation is a kind of advanced oxidation technology widely researched and applied. The discovery of Fenton's reagent has a history of more than 100 years. Fenton's reagent has a strong oxidizing ability, and is especially suitable for the treatment of some refractory or biologically toxic industrial wastewater such as phenols, aromatic amines, aromatic hydrocarbons, pesticides and nuclear waste. The reason why Fenton's reagent has a very strong oxidation ability is because it can catalyze the generation of hydroxyl radicals ( OH). Compared with other oxidants, OH has a stron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 艾智慧朱琳莉张礼知贾法龙
Owner HUAZHONG NORMAL UNIV
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