Method and device for sterilizing water body in combination with three-dimensional electrode and photocatalysis , application thereof

A three-dimensional electrode, photocatalytic technology, applied in chemical instruments and methods, sterilization/microdynamic water/sewage treatment, water/sewage multi-stage treatment, etc. , to reduce loss, improve electrochemical efficiency, increase adsorption and retention

Active Publication Date: 2012-07-04
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for wastewater with a high concentration of bacteria, it is difficult to completely inactivate bacteria in a short period of time using a single photocatalytic technology, and the shortcomings of photocatalyst immobilization and inactivation restrict its further industrialization process.

Method used

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  • Method and device for sterilizing water body in combination with three-dimensional electrode and photocatalysis , application thereof
  • Method and device for sterilizing water body in combination with three-dimensional electrode and photocatalysis , application thereof
  • Method and device for sterilizing water body in combination with three-dimensional electrode and photocatalysis , application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A device for combining three-dimensional electrodes and photocatalysis for water sterilization, such as figure 1 Shown: includes the three-dimensional electrode electrochemical sterilization pool 18 connected in sequence, the diversion groove 17 between the three-dimensional electrode electrochemical sterilization pool and the ultraviolet photocatalytic sterilization pool, and the ultraviolet photocatalytic sterilization pool 16; the three-dimensional electrode electrochemical sterilization pool 18 The material of the housing 4 of the ultraviolet photocatalytic sterilization pool 16 is hard plastic, and its volume can be adjusted according to the treatment capacity of the waste water and the concentration of bacteria therein; the bottom of the three-dimensional electrode electrochemical sterilization pool 18 is provided with multiple exposure Air pipeline 1 and water inlet 2, water inlet 2 can be connected with the water pump 3 that is used for regulating water body to e...

Embodiment 2

[0059] Use the device described in embodiment 1 to process bacteria-containing wastewater, wherein the three-dimensional electrode filler used is the material obtained by mixing iron filings and activated carbon particles in a mass ratio of 1:9 (making the filling rate of the three-dimensional electrode electrochemical sterilization pool 60 %), the photocatalyst layer is TiO 2 film.

[0060] Inject the bacteria-containing wastewater to be treated into the three-dimensional electrode electrochemical reaction tank 18 through the water pump, start the air compressor to aerate through the aeration tube, turn on the power supply 7 and apply 10V voltage to the graphite cathode 5 and graphite anode 12, and add NaCl electrolyte The electrolyte concentration of the waste water was 50 mg / L. Turn on the ultraviolet lamp (the total power of the ultraviolet lamp is 250W) to carry out the continuous sterilization experiment. After the wastewater was treated in the three-dimensional electr...

Embodiment 3

[0062] Use the device described in embodiment 1 to process bacteria-containing wastewater, wherein the three-dimensional electrode filler used is the material obtained by mixing iron filings and activated carbon particles in a mass ratio of 5:5 (making the filling rate of the three-dimensional electrode electrochemical sterilization pool 30 %), the photocatalyst layer is a ZnO thin film.

[0063] Inject the bacteria-containing wastewater to be treated into the three-dimensional electrode electrochemical reaction pool 18 through the water pump, start the air compressor to aerate through the aeration tube, turn on the power supply 7 and apply 10V voltage to the graphite cathode 5 and graphite anode 12, and frequency conversion 3 times / min, add KCl electrolyte to make the electrolyte concentration of the water body 15mg / L. Turn on the ultraviolet lamp (the total power of the ultraviolet lamp is 250W) to carry out the continuous sterilization experiment. After the wastewater was...

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Abstract

The invention discloses a method and device for sterilizing a water body in combination with three-dimensional electrode and photocatalysis, and application of the method and the device. The method comprises the steps of: firstly, treating the water body to be treated by electrochemical reaction of the three-dimensional electrode; and then, sequentially treating the water body by photocatalytic reaction agent under the excitation of ultraviolet light to obtain the sterilized water body. The device for realizing the method comprises a three-dimensional electrode electrochemical sterilization pool and an ultraviolet light catalytic sterilization pool, which are sequentially connected with each other; the two pool walls of the three-dimensional electrode electrochemical sterilization pool are respectively provided with a cathode and an anode, which are connected with a power supply, and the three-dimensional electrode electrochemical sterilization pool is internally provided with three-dimensional electrode filler; and the pool wall of the ultraviolet light catalytic sterilization pool is fixedly provided with a photocatalyst layer, and the ultraviolet light catalytic sterilization pool is internally provided with a plurality of ultraviolet lamps used for exciting photocatalyst. After the technology for combining the three-dimensional electrode sterilization and ultraviolet lightcatalysis is adopted, the lower voltage and the ultraviolet light catalysis is carried out, waste water with higher bacteria-containing concentration can be treated efficiently, and the effect of continuous and efficient sterilization can be achieved by a one-step method, so that the bright and clear in application prospect is realized.

Description

technical field [0001] The invention relates to a water body sterilization method, in particular to a method, device and application of a three-dimensional electrode for water body sterilization combined with photocatalysis. Background technique [0002] Water safety is a common concern of people. With the continuous aggravation of environmental pollution, the increasing number of pathogenic microorganisms such as bacteria, viruses and other pathogenic microorganisms in the water environment has brought great challenges to human life safety and health. Traditional treatment technologies include chlorine disinfection and ultraviolet (UV) disinfection and separation technology. With their unique advantages such as economy, effectiveness and ease of use, they can significantly reduce the outbreak of diseases caused by pathogenic microorganisms that use water as a carrier, and improve to a certain extent. Therefore, these mature technologies are still widely used. But at the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F1/467C02F1/32
Inventor 安太成李桂英史慧贤朱锡海谢小玲
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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