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Photoelectrical chemical synergistic catalytic reaction waste water treatment method and device

A photoelectrochemical and synergistic catalysis technology, applied in electrochemical water/sewage treatment, oxidized water/sewage treatment, illuminated water/sewage treatment, etc., can solve problems such as strong pH dependence, achieve universal applicability, and improve catalytic degradation. efficiency, the effect of improving the degradation efficiency

Inactive Publication Date: 2007-05-23
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the Fe in solution 2+ After water treatment, it is necessary to separate the hydrolysis and precipitation of iron ions, and the electro-Fenton system has a strong dependence on pH, etc.

Method used

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  • Photoelectrical chemical synergistic catalytic reaction waste water treatment method and device

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Experimental program
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Effect test

Embodiment 1

[0021] As shown in Figure 1, wastewater treatment device of the present invention is made of anode tank 1, anode 2, cathode tank 3, cathode 4, reference electrode 5, salt bridge 6, potentiostat 7, high pressure mercury lamp 8, stirrer 9, Air pump 10 etc. are formed. The cathode 4 is a graphite electrode, and the anode 2 is TiO based on Ti 2 Thin-film electrodes, the reference electrode 5 is a calomel electrode, the three electrodes 2, 4, 5 are connected with the potentiostat 7, and the two-pole tanks 1, 3 are connected by a salt bridge 6. A high-pressure mercury lamp 8 is housed between the two pole grooves 1,3, which can irradiate the cathode and anode poles 2,4 at the same time. At the bottom of the anode tank 1, a magnetic stirrer 9 is installed. Outside the cathode tank 3, an air pump 10 is provided, and the exhaust pipe of the air pump 10 extends into the cathode tank 3.

[0022] In the above-mentioned device, the inventors carried out catalytic oxidation degradation t...

Embodiment 2

[0024] The device is the same as in Example 1.

[0025] When using the device of the present invention to treat the waste water containing reactive brilliant red X-3B pollutants with chromaticity of 300 degrees, when the cathode potential is Ec=-0.6V, the initial pH of the solution in the cathode tank=3.0~5.0, in the anode tank When the pH of the wastewater is not adjusted, the catalytic oxidation reaction is 60min, and the degradation and decolorization rates of 200mL of wastewater in the cathode tank and the anode tank can respectively reach 99.5% and 83.8%. with only TiO 2 Compared with the catalytic degradation rate of 200mL waste water in the anode tank by the / Ti film anode (that is, photoelectric catalysis) to 78%, the catalytic oxidation degradation efficiency of the present invention to organic matter is significantly improved.

Embodiment 3

[0027] The device is the same as in Example 1.

[0028] When using the device of the present invention to treat wastewater containing aniline concentration of 50mg / L, when the cathode potential is Ec=-0.6V, the initial pH of the solution in the cathode tank=3.0~5.0, and when the pH of the wastewater in the anode tank is not adjusted, the catalytic The oxidation reaction takes 60 minutes, and the degradation rates of 200mL of wastewater in the cathode tank and the anode tank can respectively reach 96.5% and 74.5%. with only TiO 2 Compared with the catalytic degradation rate of 200mL waste water in the anode tank by the / Ti thin film anode (that is, photoelectric catalysis) to 70.5%, the catalytic oxidation degradation efficiency of the present invention to the organic matter is significantly improved.

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PUM

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Abstract

The invention disclosed a kind of water treatment method through photoelectricity concerted catalytic oxidation as well as its device. The invention uses the TiO2 membrane electrode (Ti as the base) as the positive pole, graphite electrode as the negative pole and the calomel electrode as the reference electrode; it uses UV-lamp to irradiate the positive pole and the negative pole to form a photoelectricity catalyzing reactor; under the electric field and the ultraviolet ray, the positive pole degrade the organics in the positive tank with photoelectricity catalysis; at the same time, the negative pole generate H2O2 which degrades under ultraviolet light; so the pollutants both in the negative tank and the positive tank are degraded. The invention has reconstructed the UV / H2O2 system on the negative pole, on the basis of the degradation on the positive pole, the negative pole can degrade the organics through photoelectricity catalyst which increased the degrading efficiency of the organics which are hard to degrade.

Description

technical field [0001] The invention relates to a waste water treatment device, in particular to a reaction device for photoelectrochemical coordinated catalytic oxidation. Background technique [0002] With the rapid development of the economy, a large amount of industrial wastewater and domestic sewage are discharged directly without treatment, making the problem of water pollution increasingly serious. Especially persistent toxic and refractory organic pollutants in water, most of which have carcinogenic, teratogenic, and mutagenic effects, are easy to accumulate in organisms and amplify through the food chain, and ultimately endanger human health. Therefore, the research and development of new treatment technologies and processes is of great significance for protecting the water environment and promoting the sustainable development of economy, society and environment. [0003] Using TiO with excellent performance 2 The catalytic degradation of toxic and refractory orga...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/46C02F1/32
Inventor 李明玉房献宝熊林尚微苏有武
Owner JINAN UNIVERSITY
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