ECH-Fenton combined process for harmless degradation of dichlorophen

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: 2015-10-28
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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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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  • ECH-Fenton combined process for harmless degradation of dichlorophen
  • ECH-Fenton combined process for harmless degradation of dichlorophen

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Embodiment 1

[0021] (1) Add the distilled pyrrole (Py) to the sulfuric acid solution containing SDBS to prepare a Py electrolyte solution with a concentration of 0.1mol / L, put the Ti mesh (2cm×2cm) into the electrolyte solution and electroplate with a current of 5mA 5min, to obtain a PPy film doped with SDBS based on a Ti grid; with the PPy(SDBS) / Ti electrode as the cathode and the Pt sheet as the anode, the PdCl 2 Electroplating in the solution for 30min under the condition of 20mA made Pd / PPy(SDBS) / Ti electrode;

[0022] (2) With the double chamber electrolytic cell as the reactor, the anode and cathode chambers are separated by a cation exchange membrane; the catholyte is 100mg / L dichlorophenol aqueous solution, and the 2 SO 4 As a supporting electrolyte, the anolyte is 0.05mol / L Na 2 SO 4 Aqueous solution, adjust the initial pH value of catholyte with sulfuric acid. The self-made Pd / PPy(SDBS) / Ti electrode was used as the cathode and the Pt sheet was used as the anode for constant c...

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Abstract

The invention provides an ECH-Fenton combined process for harmless degradation of dichlorophen, which belongs to the technical field of electrochemical water treatment. The process comprises the following steps: highly-efficiently degrading dichlorophen by using a Pd/PPy(SDBS)/Ti electrode with high catalytic activity; and then further degrading dichlorophen by using a Fenton reagent so as to realize harmless removal of dichlorophen. The ECH-Fenton combined process realizes 100% high-efficiency harmless degradation of the pollutant dichlorophen with severe toxicity.

Description

technical field [0001] The invention utilizes an electrochemical reduction dechlorination-Fenton reagent oxidation combined process to harmlessly degrade dichlorophenol, and belongs to the technical field of electrochemical water treatment. Background technique [0002] Chlorophenols are typical persistent organic pollutants, which are highly toxic and difficult to degrade. The conversion treatment methods of chlorophenols are roughly divided into biological methods and chemical methods. The biological method uses chlorophenol as a substrate and transforms and degrades it through the metabolic activities of microbial populations. 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 be widely used. Chemical methods include advanced oxidation, reduction of zero-valent metals, electrocatalytic hydrodechlorination, etc. The advanced oxidation method has the disa...

Claims

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Application Information

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