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Water-treating bipolar pulse discharge process

A bipolar pulse, water treatment technology, applied in the fields of magnetic field/electric field water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc. Efficient water sterilization, prolonging life and improving strength

Inactive Publication Date: 2003-09-10
DALIAN UNIV OF TECH
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Problems solved by technology

[0009] The purpose of the present invention is to provide a method of using a bipolar pulse power supply to supply power to electrodes covered with an insulating medium, enhance the electric field between the electrodes, form more micro-discharges, generate more active species, and achieve more efficient water body sterilization. The decolorization of wastewater, especially the method of catalytic degradation of refractory biodegradable and persistent organic pollutants (POPs), solves the problems of low efficiency and insignificant effect of existing discharge plasma water treatment

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  • Water-treating bipolar pulse discharge process
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  • Water-treating bipolar pulse discharge process

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Embodiment Construction

[0023] The best embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] In order to better accelerate the free electrons in the discharge process without accelerating the ions to generate more active species, the power supply adopts a bipolar pulse power supply (10), and its power supply parameters are: peak-to-peak voltage 1-200 kV , The pulse rise time is 30-300 nanoseconds, and the pulse repetition frequency is 1-2000 Hz.

[0025] The reactor adopts a cylindrical reactor with a column-cylindrical electrode structure. The surface of the high-voltage electrode (3) in contact with the gas-liquid mixture is completely covered by the glass insulating medium (4), so that the metal high-voltage electrode (3) and the gas-liquid The mixture is separated, and at the same time, it is ensured that the insulating medium has no obvious edges, corners and protrusions, so as to avoid the occurrence of strong partial disc...

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Abstract

The present invention belongs to the field of low temperature plasma applying technology and is especially a high-grade discharging and low temperature plasma oxidizing water processing method. One in-situ bipolar pulse discharge low temperature plasma water voltage power supply, covering of the discharge electrodes with medium, filling of the gap between the electrodes by air-liquid mixture of fine bubbles and processed water. The present invention has strengthened electric field between the electrodes, protected high-voltage electrodes and long service life, and may be used in sterilizing water, decoloring waste water and catalytically degrading matters hard to degrade biologically and lasting organic pollutant.

Description

technical field [0001] The invention belongs to the application technical field of low-temperature plasma, and in particular relates to a water discharge low-temperature plasma advanced oxidation treatment method. Background technique [0002] At present, conventional treatment methods such as physical and chemical methods have low treatment efficiency for organic pollutants and persistent organic pollutants that are difficult to biodegrade in water. Biological methods are also difficult to work because the compounds are stable and some even limit the growth of microorganisms. [0003] The newly developed advanced oxidation technology such as the Fenton (Fenton) reagent method has high processing efficiency, but the reagents provided for creating the Fenton reaction are very expensive. Ozone and its combined ozone oxidation method, because the ozone generator is expensive, and the generation efficiency of ozone is low, the energy consumption is large, and the energy is not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48
Inventor 吴彦张若兵李杰王宁会
Owner DALIAN UNIV OF TECH
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