Method and equipment for degrading organic waste water through UV-light concerted electro-Fenton system

An ultraviolet light and system technology, applied in energy wastewater treatment, textile industry wastewater treatment, light water/sewage treatment, etc., can solve the problems of water environmental pollution, high total organic carbon content of wastewater, and difficult biodegradation

Active Publication Date: 2016-01-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the printing and dyeing industry, a large amount of dye wastewater is produced. The molecular structure of the dye is relatively stable and difficult to biodegrade. In addition, carcinogenic aromatic amines may be produced during the redox process. The environment brings pollution
Traditional advanced oxidation technologies, such as Fenton oxidation and photocatalysis, can effectively degrade dye wastewater, but their degradation efficiency is low, and the total organic carbon content of treated wastewater is generally high

Method used

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  • Method and equipment for degrading organic waste water through UV-light concerted electro-Fenton system
  • Method and equipment for degrading organic waste water through UV-light concerted electro-Fenton system
  • Method and equipment for degrading organic waste water through UV-light concerted electro-Fenton system

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0105] Preparation of Ultraviolet Light Synergistic Electro-Fenton System

[0106] The ultraviolet light synergistic electro-Fenton system of the present invention is mainly prepared by the following steps:

[0107] (1) preparing the cathode electrode, wherein the cathode electrode contains (a) polytetrafluoroethylene, and (b) graphite and / or carbon nanotubes;

[0108] (2) The cathode electrode prepared in step (1), the inert anode and the electrolyte solution are combined into a Fenton system, and a certain voltage and ultraviolet light irradiation are applied simultaneously.

[0109] In another preferred example, the method includes the following step (3): adding the waste liquid containing pollutants to be treated to the ultraviolet light synergistic electro-Fenton system, electrifying at a certain voltage for a period of time, and The pollutants mentioned above are degraded.

[0110] In another preferred example, in the step (1), it includes: mixing the following cathode...

Embodiment 1

[0126] Example 1: Preparation and Application of Ultraviolet Light Synergistic Electro-Fenton System No.1

[0127] Weigh 10g flake graphite, add 0.1mL "OP" emulsifier (purchased from Jiangsu Hai'an Petrochemical Factory), 3mL absolute ethanol and 1.0g polytetrafluoroethylene, and ultrasonically disperse evenly until the mixture forms a cohesive paste. Roll the paste into a film of about 2.5mm, attach the upper and lower sides of the film to a stainless steel mesh, press it under a pressure of 30MPa to obtain an electrode, soak it in acetone solution for 2 hours to remove the residual ethanol and "OP" emulsifier on the electrode surface. Keep warm at 80°C for 2 hours in an infrared box to make a graphite electrode, and its final size: bottom area × height = 1.0cm 2 ×5mm.

[0128] The prepared cathode electrode was used as the cathode, the platinum sheet was used as the anode, and sodium sulfate (10 g / L) was used as the supporting electrolyte to obtain an electro-Fenton system....

Embodiment 2

[0133] Example 2: Preparation and Application of Ultraviolet Light Synergistic Electro-Fenton System No.2

[0134] Weigh 9g of carbon nanotubes, add 0.1mL of "OP" emulsifier (purchased from Jiangsu Haian Petrochemical Factory), 2mL of absolute ethanol and 1.2g of polytetrafluoroethylene, and ultrasonically disperse evenly until the mixture forms a cohesive paste , Roll the paste into a film of about 2.5mm, attach it to a metal nickel mesh, press it under a pressure of 30MPa to obtain an electrode, soak it in acetone solution for 2h to remove the residual ethanol and "OP" emulsifier on the electrode surface. Keep warm at 80°C for 2 hours in an infrared box, and then the carbon nanotube electrode is prepared, and its final size: bottom area × height = 1.0cm 2 ×5mm.

[0135] The prepared cathode electrode was used as the cathode, the platinum sheet was used as the anode, and potassium sulfate was used as the supporting electrolyte to obtain an electro-Fenton system.

[0136] Du...

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Abstract

The invention belongs to the field of environmental protection and sewage treatment and particularly relates to a method and equipment for degrading waste liquor which is to be treated and contains pollutants through an UV-light concerted electro-Fenton system. According to the method, the UV-light concerted electro-Fenton system formed by UV-light, light concerted catalysis and electro-Fenton is used, and the waste liquor which is to be treated and contains the pollutants is placed in the system to be degraded effectively. According to the method, photocatalysis and electrochemical oxidation are organically combined, and the degradation efficiency of a traditional Fenton system to the waste liquor which is to be treated and contains the pollutants is improved.

Description

technical field [0001] The invention belongs to the field of environmental protection and sewage treatment, and in particular relates to a method and equipment for degrading waste liquid containing pollutants to be treated by ultraviolet light in cooperation with an electro-Fenton system. Background technique [0002] With the rapid development of the printing and dyeing industry, a large amount of dye wastewater is produced. The molecular structure of the dye is relatively stable and difficult to biodegrade. In addition, carcinogenic aromatic amines may be produced during the redox process. The environment brings pollution. Traditional advanced oxidation technologies, such as Fenton oxidation and photocatalysis, can effectively degrade dye wastewater, but their degradation efficiency is low, and the total organic carbon content of treated wastewater is generally high. [0003] Therefore, there is an urgent need in this field to develop a method for degrading waste liquid c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F1/72C02F103/30
CPCY02W10/37
Inventor 刘栓赵文杰王立平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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