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Magnetic graphene based fe n+ Three-dimensional electrode heterogeneous electro-fenton treatment method of printing and dyeing wastewater

A magnetic graphene, printing and dyeing wastewater technology, applied in the direction of water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of unstable degradation, unsatisfactory reuse effect, etc., to avoid Secondary pollution, good application prospects, mild reaction conditions

Active Publication Date: 2022-03-08
GUANGDONG ENG TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many scholars have studied particle materials with catalytic functions (activated carbon, metal conductive particles, ceramics, etc.) as three-dimensional electrodes, but there are defects of unstable degradation and unsatisfactory repeated use effect

Method used

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  • Magnetic graphene based fe <sup>n+</sup> Three-dimensional electrode heterogeneous electro-fenton treatment method of printing and dyeing wastewater
  • Magnetic graphene based fe <sup>n+</sup> Three-dimensional electrode heterogeneous electro-fenton treatment method of printing and dyeing wastewater
  • Magnetic graphene based fe <sup>n+</sup> Three-dimensional electrode heterogeneous electro-fenton treatment method of printing and dyeing wastewater

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Experimental program
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Effect test

Embodiment 1

[0044] The present invention adopts magnetic graphene-based Fe n+ An embodiment of the method for processing printing and dyeing wastewater by three-dimensional particle electrode heterogeneous electro-Fenton, the method for processing printing and dyeing wastewater includes the following steps:

[0045] 1) The magnetic graphene-based Fe n+ Particle materials are added to the reaction tank of printing and dyeing wastewater;

[0046] 2) After fully mixing evenly, adjust the pH value of the sewage to 3, 6, 9, and 11 respectively, and carry out mechanical stirring and aeration to make the magnetic graphene-based Fe n+ The particle material is suspended in the reaction tank;

[0047] 3) At an electrolysis current of 0.65A and a current density of 8.89mA / cm 2 Electro-Fenton reaction under the conditions for 240min, then magnetic separation and precipitation, recovery of magnetic graphene-based Fe n+ Particle material; measure effluent COD, methylene blue concentration value, an...

Embodiment 2

[0053] The present invention adopts magnetic graphene-based Fe n+ An embodiment of the method for processing printing and dyeing wastewater by three-dimensional particle electrode heterogeneous electro-Fenton, the method for processing printing and dyeing wastewater includes the following steps:

[0054] 1) The magnetic graphene-based Fe n+ Particle materials are added to the reaction tank of printing and dyeing wastewater;

[0055] 2) After fully mixing evenly, adjust the pH value of the sewage to 6, and carry out mechanical stirring and aeration to make the magnetic graphene-based Fe n+ The particle material is suspended in the reaction tank;

[0056] 3) At an electrolysis current of 0.65A and a current density of 8.89mA / cm 2 Electro-Fenton reaction under the conditions for 240min, then magnetic separation and precipitation, recovery of magnetic graphene-based Fe n+ Particle material; measure effluent COD, methylene blue concentration value, and calculate its removal rat...

Embodiment 3

[0063] The present invention adopts magnetic graphene-based Fe n+ An embodiment of the method for processing printing and dyeing wastewater by three-dimensional particle electrode heterogeneous electro-Fenton, the method for processing printing and dyeing wastewater includes the following steps:

[0064] 1) The magnetic graphene-based Fe n+ Particle materials are added to the reaction tank of printing and dyeing wastewater;

[0065] 2) After fully mixing evenly, adjust the pH value of the sewage to 6, and carry out mechanical stirring and aeration to make the magnetic graphene-based Fe n+ The particle material is suspended in the reaction tank;

[0066] 3) At an electrolysis current of 0.16A and a current density of 2.2mA / cm 2 Electro-Fenton reaction under the condition of 220min, magnetic separation and precipitation are carried out to recover magnetic graphene-based Fe n+ Particle material; measure effluent COD, methylene blue concentration value, and calculate its remov...

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Abstract

The present invention discloses magnetic graphene-based Fe n+ The method for processing printing and dyeing wastewater by three-dimensional electrode heterogeneous electro-Fenton comprises the following steps: 1) the magnetic graphene-based Fe n+ Add the particle material into the reaction tank of printing and dyeing wastewater; 2) After fully mixing, adjust the pH value of the sewage to 3-11; 3) Electro-Fenton reaction under the condition of electrode current 0.16-0.98A, and finally stand still, magnetic separation and recovery of particles The electrode material can be; the reaction tank is made of magnetic graphene-based Fe n+ The heterogeneous catalytic particle material is used as the third electrode between the anode plate and the cathode plate to form a three-dimensional particle electrode reaction device. The invention has the characteristics of good treatment effect, wide adaptable range of pH value, reusable particle electrode, avoiding secondary pollution, high current efficiency, stable electrocatalytic activity and the like.

Description

technical field [0001] The invention relates to the technical field of environmental functional materials and water treatment, in particular to a magnetic graphene-based Fe n+ Three-dimensional particle electrode heterogeneous electro-Fenton method for treating printing and dyeing wastewater. Background technique [0002] Printing and dyeing wastewater contains a large amount of residual dyes, the concentration changes greatly, the pollution components are complex, the chemical oxygen demand, chroma, salt content are high, BOD 5 / COD is low, and the dye has strong anti-oxidation and photolysis resistance, is difficult to biodegrade, has "three effects" effects, and is also harmful to animal and human health. Therefore, the deep removal of dye pollutants in wastewater is one of the research hotspots and difficulties in the field of environmental remediation. [0003] With its high reactivity, advanced oxidation technology can convert organic pollutants, especially trace and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/72
CPCC02F1/46109C02F1/467C02F2101/308C02F2001/46142
Inventor 姚创杨远秀唐源胜饶俊元刘建新黄弦王万证涂家财侯明才郭婉婷黄俏
Owner GUANGDONG ENG TECH INST
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