Fixed bed inhomogeneous three dimensional electrode photo electrocatalysis reactor

A technology of photoelectric catalysis and three-dimensional electrodes, which is applied in the fields of chemical instruments and methods, chemical/physical processes, oxidized water/sewage treatment, etc., can solve problems such as technology urgently needs to be upgraded, achieve organic coordination of reaction system, save cost, The effect of improving efficiency

Inactive Publication Date: 2008-07-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current related research only stops at the proof of the concept that the anode bias can capture photogenerated electrons. In order to make many phases of photocatalytic process can be used in production, the technology in this area needs to be further developed.

Method used

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  • Fixed bed inhomogeneous three dimensional electrode photo electrocatalysis reactor
  • Fixed bed inhomogeneous three dimensional electrode photo electrocatalysis reactor
  • Fixed bed inhomogeneous three dimensional electrode photo electrocatalysis reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Process the Levafix Red of 200mg / L with the present invention's continuous cycle multi-layer spaced fixed bed heterogeneous three-dimensional electrode photocatalytic reactor, the active dye dye simulated waste liquid of pH value 6.27, at 15V voltage, 125W ultraviolet light source, load TiO Activated carbon The particle size of the particles is 3mm, the air flow rate is 0.3m3 / h, and under the condition of no electrolyte, the removal rate of the active dye is 98.25% when the photocatalytic reaction is 60min, which is higher than the 65.52% and 65.52% only in the photocatalytic and electrochemical oxidation 90.98% are high.

Embodiment 2

[0044] Using the present invention's continuous cycle multi-layer spaced fixed-bed heterogeneous three-dimensional electrode photocatalytic reactor to process 200mg / L Yimanlen polyester Red HSF 300, disperse dye simulated waste liquid with a pH value of 6.8, at 15V voltage, 125W ultraviolet light source, The particle size of the loaded TiO2 activated carbon particles is 5mm, the air flow rate is 0.3m3 / h, and under the condition of no electrolyte, the removal rate of the active dye is 95.46% when the photocatalytic reaction is 60min, which is higher than that only in the photocatalytic and electrochemical oxidation. 29.41% and 90.61% are both high.

Embodiment 3

[0046] Process the Levafix Red of 200mg / L with the present invention's continuous cycle multi-layer spaced fixed bed heterogeneous three-dimensional electrode photocatalytic reactor, the active dye dye simulated waste liquid of pH value 6.27, at 15V voltage, 125W ultraviolet light source, load TiO Activated carbon The particle size of the particles is 3mm, the air flow rate is 0.3m3 / h, and the electrolyte NaCl2g / L is added, the removal rate of the active dye is 97.74% when the photoelectric catalytic reaction takes 24 minutes.

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Abstract

The invention relates to a continuous cycle multilayer interval type fixed bed non- homogeneous phase three-dimensional electrode photoelectric catalytic reactor, which includes a reactor shell body, a titanium network anode, a porous graphite cathode, a double layer U-shaped silica tube and an illuminant UV lamp arranged in the silica tube, wherein, a photoelectric catalytic reaction chamber is formed between the graphite cathode and the titanium network anode, a multilayer compartment type fixed bed three-dimensional particle electrode is arranged in the chamber, and the three-dimensional particle electrode material is made by coating nanometer TiO2 on the active carbon particles; a circulating device composed of a fluid reservoir and a pump is arranged between a fluid inlet and a fluid outlet of the reaction chamber. The invention wonderfully integrates the three-dimensional electrode and the photocatalytic technology; the multilayer interval type fixed bed is beneficial to the mass transfer effect and can improve the degradation rate of the system. The invention is highly efficient and rapid and is suitable for the treatment of dyeing waste water that has high concentration and is difficult to degrade. The device has no secondary pollution and more than one reaction device can be connected in series for use, which is mobile and flexible.

Description

technical field [0001] The invention belongs to the technical field of environmental chemical photocatalytic oxidation water treatment, and in particular relates to a continuous circulation multi-layer spaced fixed bed heterogeneous three-dimensional electrode photocatalytic reactor. Background technique [0002] Environmental pollution and ecological damage have had a huge impact on my country's economy and society, and have endangered people's health and restricted some important factors in local economic and social development. In 1997, my country's economic losses caused by water and air pollution alone were as high as 54 billion U.S. dollars. Due to the characteristics of my country's large population, low per capita resources, relatively weak environmental carrying capacity, and underdeveloped economy, it is impossible to completely adopt some traditional methods commonly used by Western developed countries to solve the current complex environmental pollution problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/02B01J19/08C02F1/72
Inventor 蔡再生卑圣金景晓辉
Owner DONGHUA UNIV
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