Dielectric barrier discharge water treatment device

Abstract

The invention discloses a dielectric barrier discharge water treatment device, which comprises a high-voltage high-frequency pulse power supply, a tinfoil high-pressure electrode, a quartz medium cylinder, a copper tube grounding electrode, a suspension electrode and an insulating board. The suspension electrode is in a cylinder shape, the inner diameter of the suspension electrode is larger than the outer diameter of the copper tube grounding electrode, and the central axis of the suspension electrode is collinear with that of the copper tube grounding electrode. Water needing to be treated enters the copper tube grounding electrode from a water inlet at the center of the insulating board and overflows from the upper end of the copper tube grounding electrode, a flowing water film forms at the outer wall of the copper tube grounding electrode, and finally the water discharges from a water outlet at the lower end of the quartz medium cylinder. The dielectric barrier discharge water treatment device directly uses sewage as an auxiliary grounding electrode, generated active substances in plasma can be directly mass-transferred into the water, the mass-transferred efficiency is high, and the required time is less. When the dielectric barrier discharge water treatment device is in sewage treatment, the sewage can be treated flexibly, water flow speed can be adjusted, namely sewage can be treated in one step and can be treated circularly and repeatedly, and maneuverability in an actual application process is strong.

Description

technical field [0001] The invention belongs to the field of low-temperature plasma generation technology and water treatment application technology, and relates to a device for treating wastewater with high-voltage and high-frequency pulse gas-liquid mixed medium barrier discharge plasma. Background technique [0002] Water resource pollution is one of the urgent problems faced by all countries in the world, and its deterioration trend is intensifying, making it difficult for traditional biochemical treatment technologies to completely solve many problems of water pollution, such as nitrogen and phosphorus removal, decolorization and deodorization, sterilization and microbe removal , Degradation of persistent organic pollutants, etc. [0003] As a more effective and lower-cost treatment technology, treating wastewater with high-voltage pulsed dielectric barrier discharge plasma with electrodes embedded in liquid has important practical value. In this technology, a barrier ...

AI Technical Summary

Problems solved by technology

Although there have been some studies on the application of dielectric barrier discharge technology to wastewater treatment, the traditional method of high-voltage pulse dielectric barrier discharge plasma treatment of wastewater is to generate dielectric barrier discharge in the gas, and the generated plasma gas is passed into the water through the mass transfer process. For sewage treatment, there are problems such as low mass transfer efficiency, ineffective mass transfer of short-lived substances, high cost, and continuous treatment.

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