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A kind of ech-fenton combined process harmless degradation method of dichlorophenol

A combined process and technology of dichlorophenol are applied in the field of harmless degradation of dichlorophenol, which can solve the problems of not achieving harmless degradation of chlorophenol, and achieve the effects of low price and high catalytic activity.

Active Publication Date: 2017-06-30
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, these technologies have not yet achieved the harmless degradation of chlorophenols

Method used

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  • A kind of ech-fenton combined process harmless degradation method of dichlorophenol
  • A kind of ech-fenton combined process harmless degradation method of dichlorophenol

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Embodiment 1

[0021] (1) Add the distilled pyrrole (Py) to the sulfuric acid solution containing SDBS, prepare an electrolyte solution of Py with a concentration of 0.1 mol / L, put the Ti mesh (2cm×2cm) into the electrolyte solution and electroplate with a 5mA current For 5 min, a Ti mesh-based PPy film doped with SDBS was obtained; the PPy(SDBS) / Ti electrode was used as the cathode, and the Pt sheet was used as the anode. 2 Pd / PPy(SDBS) / Ti electrode was prepared by electroplating under the condition of 20mA for 30min in the solution;

[0022] (2) The two-chamber electrolytic cell is used as the reactor, and the cathode and anode compartments are separated by a cation exchange membrane; 2 SO 4 As supporting electrolyte, the anolyte is 0.05mol / L Na 2 SO 4 Aqueous solution, with sulfuric acid to adjust the initial pH of the catholyte. The self-made Pd / PPy(SDBS) / Ti electrode was used as the cathode and the Pt sheet was used as the anode for galvanostatic dechlorination, and the concentratio...

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Abstract

The invention discloses a method for harmlessly degrading dichlorophenol by an ECH-Fenton combined process, which belongs to the technical field of electrochemical water treatment. First, the highly catalytically active Pd / PPy(SDBS) / Ti electrode was used to degrade dichlorophenol efficiently; then Fenton's reagent was used for further degradation, so as to realize the harmless removal of dichlorophenol. The ECH-Fenton combined process realizes 100% efficient and harmless degradation of dichlorophenol, a highly toxic pollutant.

Description

technical field [0001] The invention utilizes the combined process of electrochemical reduction dechlorination-Fenton reagent oxidation method to degrade dichlorophenol harmlessly, and belongs to the technical field of electrochemical water treatment. Background technique [0002] Chlorophenols belong to a class of typical persistent organic pollutants, which are highly toxic and difficult to degrade. The conversion treatment methods of chlorophenols are roughly classified into biological methods and chemical methods. The biological method uses chlorophenol as a substrate, and converts and degrades it through the metabolic activities of the microbial population. It has the advantages of small investment, thorough treatment of pollutants, and small impact on the environment. Chlorophenols are slow to take effect and difficult to use widely. Chemical methods include advanced oxidation, zero-valent metal reduction, electrocatalytic hydrodechlorination, etc. The advanced oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F101/36
Inventor 孙治荣张智勇
Owner BEIJING UNIV OF TECH