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Gas-liquid mixed dielectric barrier discharge water treatment device and method

A technology of dielectric barrier discharge and water treatment device, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Insufficient contact, uneven and stable plasma, etc., to achieve the effect of increasing residence time, convenient operation and simple equipment

Active Publication Date: 2014-05-28
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The traditional dielectric barrier discharge plasma for wastewater treatment uses such as air, Ar, N 2 When the gas is used as the working medium, the generated plasma enters the aqueous solution through the mass transfer of the gas or liquid to treat the wastewater. There are uneven and stable plasma, free radicals cannot be effectively used in time, active particles and organic pollutants in the wastewater Insufficient access and high costs

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  • Gas-liquid mixed dielectric barrier discharge water treatment device and method

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail: as figure 1 As shown, a gas-liquid mixed medium barrier discharge water treatment device includes a reactor, a plasma generator, and a corresponding measurement and control system. The reactor is composed of a metal tank 11 and an insulating cover 2 interlocked with it. , the insulating cover is equipped with a safety valve 3 and a plurality of through holes arranged in an orderly manner, the through holes are respectively the insertion hole of the high voltage electrode, the gas discharge port and the atomizing spray port 6, the bottom of the metal tank A liquid discharge port 14 is arranged, which is connected to the heat exchanger 1 through a control valve; the plasma generating device is composed of a high-voltage electrode 4, a ground electrode and a plasma power supply 1, and the high-voltage electrode is covered by an insulating medium ...

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Abstract

The invention discloses a gas-liquid mixed dielectric barrier discharge water treatment device and method. The device comprises a reactor, a plasma generator, a pretreatment device, an atomization sprinkler and a corresponding measurement control system. According to the device and the method atomized wastewater and air are taken as plasma working media to generate stable and uniform plasma at the liquid level around electrodes inserted in the wastewater and along the gas phase of the electrodes, so as to effectively solve the problem that contact between active particles in plasma and organic pollutants in the water is insufficient. The gas-liquid mixed dielectric barrier discharge water treatment device and method have the characteristics of high treatment efficiency, economy and practicability.

Description

technical field [0001] The invention belongs to the technical field of low-temperature plasma application and waste water treatment, and in particular relates to a water treatment device and method using gas-liquid mixed medium barrier discharge plasma water treatment. Background technique [0002] With the development of economy, our country is currently facing the dual environmental problems of water resource shortage and serious water pollution. Traditional biological treatment technology is difficult to meet the increasingly complex water quality treatment requirements, such as the treatment of dye wastewater, pesticide wastewater, wastewater containing persistent organic pollutants, etc. [0003] Discharge plasma water treatment is considered to be a new type of advanced oxidation technology for water treatment. It combines multiple functions such as ozone oxidation, ultraviolet photodegradation, free radical oxidation, pyrolysis and high-energy electron radiation, and ...

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Application Information

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IPC IPC(8): C02F9/06
Inventor 倪国华林启富江贻满程军莉
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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