Enhanced-type capillary-needle discharging plasma water treatment device
A discharge plasma and water treatment device technology, which is applied in the fields of magnetic field/electric field water/sewage treatment, light water/sewage treatment, oxidized water/sewage treatment, etc. Need to further improve and other issues to achieve the effect of increasing utilization, avoiding losses, reducing generation and maintenance voltage
Active Publication Date: 2013-01-30
TSINGHUA UNIV
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Among them, the needle of the syringe is used as the power electrode. In the application process, an expensive inert gas (such as argon or helium) must be used as the working gas. Under the excitation of the power source, a large amount of plasma is generated in the dielectric tube, which is passed through the air flow and electric field. , the plasma in the discharge area is ejected out of the tube to form a jet, which is observed as a conical light column with the naked eye. It is mainly used for decontamination of the material surface (including the surface of organisms) and cleaning of the inner wall of the dielectric tube; under certain conditions, it can also be used in a liquid atmosphere. However, the aqueous solution easily invades the inside of the glass tube and interferes with the discharge stability. In addition, the discharge intensity still needs to be further improved.
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[0023] The invention is an enhanced capillary needle discharge plasma water treatment device, which includes a reaction vessel and a generating device, wherein: the reaction vessel is made of insulating material, contains liquid to be treated, and the liquid to be treated is connected to the low-voltage end of a high-voltage power supply , both are connected to the ground electrode at the same time; the generating device is placed in the reaction vessel, which contains a hollow metal capillary with an inner diameter of 0.3mm~3mm and a needle-shaped lower end nozzle, an insulating medium tube, a metal end cap and a gas chamber, wherein: the The outer side of the upper end of the hollow metal capillary is connected to the high-voltage end of the high-voltage power supply with a frequency of 5kHz~100kHz and a voltage of 1kV~30kV through a metal wire, as a power electrode; the insulating dielectric tube is coaxially and tightly sleeved outside the hollow metal capillary, and The no...
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The invention relates to an enhanced-type capillary-needle discharging plasma water treatment device, which belongs to the technical field of the application of low-temperature plasma, and relates to a constant-pressure plasma discharging reaction device for water treatment, and the enhanced-type capillary-needle discharging plasma water treatment device is characterized by comprising a reaction container and a discharging device, wherein the discharging device consists of a metal capillary power electrode, an insulation medium pipe, a metal end cover suspension electrode and an air chamber and is arranged inside the reaction container; working gas enters the metal capillary and the insulation medium pipe through the air chamber, gas discharging plasma is generated inside the insulation medium pipe between a needle-shaped pipe orifice on the lower end of the metal capillary and a metal end cap under the effect of high-voltage power supply, a generated product enters solution to be treated through small holes on the metal end cap, and solution inside the reaction container is purified; and the enhanced-type capillary-needle discharging plasma water treatment device has advantages that the utilization rate of active substances is high, the universality for different solutions to be treated is strong, the stability is good, easiness in integration is realized, and the exciting source requirement of the plasma is reduced.
Description
technical field [0001] The invention belongs to the application technical field of low-temperature plasma, and relates to an atmospheric pressure plasma discharge reaction device which can be used for water treatment. Background technique [0002] As a basic need for human survival, water resources must be highly valued and effectively protected because of its scarcity and irreplaceable status in production and life. With the acceleration of industrialization and urbanization in China, the consumption of fresh water is increasing day by day. At the same time, the discharge of industrial sewage and domestic sewage is also increasing year by year, resulting in more urgent demand for water resources. Due to the complex composition and variety of pollutants in sewage, especially industrial wastewater, some organic substances are difficult to effectively degrade when treated by conventional methods. Even if some can be degraded, there will be problems such as incomplete degradati...
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Login to View More IPC IPC(8): C02F1/72C02F1/78C02F1/30C02F1/48
Inventor 李和平聂秋月包成玉陈建宇
Owner TSINGHUA UNIV
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