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Application and method of degrading organic wastewater with Ce-OMS-2 catalyst

An organic waste water and catalyst technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve the problems of large amount of oxidant, low catalytic activity, and high processing cost, and achieve good effect and reaction equipment. Simple, high catalytic activity

Active Publication Date: 2017-05-10
WUHAN TEXTILE UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main technical problems to be solved are: the amount of oxidant used to treat wastewater is large, and the treatment cost is relatively high; the catalytic activity of manganese oxide compounds in the prior art is not high under neutral conditions

Method used

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  • Application and method of degrading organic wastewater with Ce-OMS-2 catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 200mg / L potassium hydrogen persulfate to the 50mg / L acid orange Ⅱ dye solution, adjust the pH of the solution to 1.0, add 200mg / L Ce-OMS-2 catalyst, and the decolorization rate of the dye after 5 minutes is 98.6%; comparative experiment 1. Add 200 mg / L potassium monopersulfate to the 50 mg / L acid orange II dye solution, adjust the pH of the solution to 6.8, add 200 mg / L Ce-OMS-2 catalyst, and the decolorization rate of the dye is 95.2% after 15 minutes ; Comparative experiment two, add 200mg / L potassium hydrogen persulfate to the 50mg / L acid orange Ⅱ dye solution, adjust the pH of the solution to 12.0, add 200mg / L Ce-OMS-2 catalyst, the decolorization rate of the dye after 30 minutes was 90.6%.

Embodiment 2

[0026] Add 200mg / L potassium monopersulfate to the 50mg / L acid orange II dye solution, adjust the pH of the solution to 7.5, then add Ce-OMS-2 catalyst, the concentration is 200mg / L, the decolorization rate of the dye is 95% after 15 minutes %; Contrast experiment one, only add 200mg / L potassium hydrogen persulfate to 50mg / L acid orange Ⅱ dye solution, decolorization rate is only 1.8% after 15 minutes under the same pH; Contrast experiment two, add 50mg / L acid orange Only add Ce-OMS-2 catalyst in the Ⅱ dye solution, the decolorization rate is 8% after 15 minutes under the same pH value; Comparative experiment 3, add potassium hydrogen persulfate of the same concentration and OMS-2 catalyst, the dye decolorization rate is 48% after 15 minutes at the same pH value.

Embodiment 3

[0028] Add 10 mg / L potassium monopersulfate to 500 mg / L acid orange II dye solution, adjust the pH of the solution to 3.0, then add 500 mg / L Ce-OMS-2 catalyst to it, and the decolorization rate of the dye after 120 minutes is 56.5 %.

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Abstract

The invention discloses application and a method of degrading organic wastewater with a Ce-OMS-2 catalyst, and relates to the field of catalyzing and water treatment. The Ce-OMS-2 catalyst conducts degradation on the organic wastewater by activating persulfate. The method comprises the steps of adding persulfate and the Ce-OMS-2 catalyst to a wastewater solution, performing stirring and blending evenly and standing, converting nonbiodegradable organic pollutant into micromolecule pollution free matter, and achieving the purpose of degrading the organic wastewater. According to the application and the method of degrading the organic wastewater with the Ce-OMS-2 catalyst, the Ce-OMS-2 catalyst can steadily and efficiently catalyzes and activates persulfate to degrade the organic wastewater at ambient temperature and pressure, is wide in pH application rage, fast in degrading rate and low in reaction device requirement, can be applied repeatedly for many times, and has a large application prospect in the field of nonbiodegradable organic wastewater treatment.

Description

technical field [0001] The invention belongs to the field of organic wastewater treatment, and in particular relates to a method for degrading organic wastewater by activating persulfate with a Ce-OMS-2 catalyst. Background technique [0002] The advanced oxidation method is highly praised for its high efficiency in degrading organic pollutants. By generating free radicals, organic pollutants can be directly mineralized into small molecular organic compounds, or the biodegradability of the original organic pollutant system can be improved after treatment. To achieve the purpose of further effective degradation. The current research and application of advanced oxidation technologies are based on hydroxyl radicals (OH) and sulfate radicals (SO 4 - ·) advanced oxidation technology. where SO 4 - ·The production mainly comes from the breaking of the peroxy bond of persulfate (including persulfate and peroxodisulfate, etc.). According to different activation methods, persulf...

Claims

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Application Information

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IPC IPC(8): C02F1/72
CPCC02F1/725C02F2101/30
Inventor 徐爱华李军方佳叶朋吴德明李晓霞
Owner WUHAN TEXTILE UNIV
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