Dielectric barrier discharge wastewater treatment device

By innovating the design of the dielectric barrier discharge rod and the use of wastewater as the discharge electrode, the problems of insufficient large-area uniform discharge and long-term operational stability of existing devices have been solved, achieving efficient large-capacity wastewater treatment, and enhancing the treatment effect through ozone recovery and utilization.

CN120681847BActive Publication Date: 2026-07-21SOUTHWESTERN INST OF PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWESTERN INST OF PHYSICS
Filing Date
2025-06-25
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing plate-shaped and rod-shaped dielectric barrier discharge water treatment devices are insufficient in terms of large-area uniform discharge and long-term operational stability, and cannot meet the needs of large-capacity wastewater treatment.

Method used

The dielectric barrier discharge rod can rotate relative to the centerline of the discharge box to form a stable plasma discharge with circular sliding. Wastewater is used as the discharge electrode, and the dielectric barrier discharge rod directly discharges to the wastewater. Combined with the design of pulse power supply and conductive electrode, it ensures effective contact between wastewater and plasma, and the rotation changes the surface tension to form local eddies that drive the liquid flow and circulation.

Benefits of technology

It achieves efficient large-area uniform discharge, avoids the breakage of insulating medium, improves wastewater treatment efficiency, meets the needs of large-capacity wastewater treatment, and enhances the treatment effect through ozone recovery and utilization.

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    Figure CN120681847B_ABST
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Abstract

The application discloses a dielectric barrier discharge wastewater treatment device and relates to the technical field of wastewater treatment.The device comprises a discharge box capable of containing wastewater and provided with a conductive electrode at the bottom, a dielectric barrier discharge rod installed at the upper portion of the inner cavity of the discharge box and capable of rotating around the center line of the discharge box, and a pulse power source electrically connected with the dielectric barrier discharge rod and the conductive electrode respectively.The dielectric barrier discharge rod can rotate relative to the center line of the discharge box to form stable plasma discharge in a circular sliding mode, and the dielectric barrier discharge rod directly discharges to the wastewater, which can ensure the effective contact between the wastewater and the plasma, thereby rapidly and effectively treating the wastewater and effectively changing the surface tension of the wastewater directly opposite to the discharge position, forming a local vortex to drive the internal flow circulation of the liquid and enhancing the treatment effect, so that the device has the characteristics of high treatment efficiency and high treatment efficiency and meets the demand of large-capacity wastewater treatment.
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