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Method and device for photo catalytically treating waste water by medium barrier discharging induced semiconductor

A technology of dielectric barrier discharge and organic waste water, which is applied in the field of environmental pollution control, can solve problems such as not seen, and achieve the effects of high efficiency, high light source efficiency and high treatment efficiency

Inactive Publication Date: 2007-05-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the process of generating high-energy electrons in dielectric barrier discharge plasma, streamer is accompanied by the generation of streamer, but there are no relevant reports on the specific role of streamer in wastewater treatment and the role of other effects in wastewater treatment.

Method used

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  • Method and device for photo catalytically treating waste water by medium barrier discharging induced semiconductor
  • Method and device for photo catalytically treating waste water by medium barrier discharging induced semiconductor
  • Method and device for photo catalytically treating waste water by medium barrier discharging induced semiconductor

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Embodiment Construction

[0030]Discharge electrode 1, low-voltage electrode 2, insulating medium 3, aeration head 8 and catalyst are installed in the closed reactor 4, and the output voltage of alternating high-voltage power supply 5 is introduced to the discharge electrode 1 and low-voltage electrode 2 through the power lead 9, A certain amount of organic dye wastewater is filled inside the reactor 4 through the water pump 10, and the organic dye wastewater is aerated through the air pump 6 and the aeration head 8. The catalyst is powder or attached to the carrier, the electrode and the surface film of the insulating medium. The form exists in the reactor 4, so that a three-phase mixed state of gas, liquid and solid is formed inside the reactor 4. Under the gas, liquid and solid three-phase mixing conditions inside the reactor 4, when the alternating high voltage power supply 5 outputs high voltage, the distance between the discharge electrode 1 and the low voltage electrode 2 (discharge plasma area) ...

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Abstract

The present invention belongs to the field of environmental pollution treating technology. The present invention utilizes the flowing light produced by medium barrier discharging as light source to induce semiconductor catalyst activity and to generate active species for oxidizing and reducing hardly biodegraded organic matter in water or creating easily biodegraded organic matter, reaching the aim of degrading hardly biodegraded organic matter in water. The present invention has the beneficial effects of high light source efficiency, synergistic effect of electric field and discharge generated plasma and high sewage treating efficiency, especially to waste water with hardly biodegraded organic matter. In addition, the method of the present invention may be used also in treating organic waste gas.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control. In particular, it relates to a dielectric barrier discharge-induced semiconductor photocatalytic treatment method and equipment for organic wastewater. Background technique [0002] With the rapid development of industry and the increase of the world's population, the demand for fresh water is increasing rapidly, resulting in an increase in the amount of industrial sewage and domestic sewage. These sewages contain a large amount of toxic organic substances and heavy metals. If they are discharged directly without treatment, they will bring serious pollution to the environment and affect the survival of human beings and the sustainable development of industry and agriculture. At present, the commonly used wastewater treatment is biochemical method, supplemented by some physical and chemical methods, such as electrolysis, air flotation, absorption and so on. However, the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H1/00C02F1/30
Inventor 李杰吴彦王宁会李国锋
Owner DALIAN UNIV OF TECH
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