Research progress on key factors of dielectric-barrier discharge plasma for wastewater treatment

Abstract

Plasma treatment of wastewater is known as a new advanced oxidation process (AOP), which has attracted extensive attention. Dielectric barrier discharge plasma has the characteristics of no vacuum pumping and high electron number density. It has outstanding application value in various forms of plasma. There are many coupling factors that affect the characteristics of dielectric barrier discharge plasma and the effect of wastewater treatment. Optimizing the key parameters is of great significance to improve the treatment efficiency and reduce the treatment cost. This paper introduces the principle, experimental device, potential advantages and application value of dielectric barrier discharge, summarizes the influence rules of key factors such as high voltage power supply characteristics, electrode configuration, carrier gas and reactor design on the characteristics of organic pollutant wastewater treatment by dielectric barrier discharge plasma. The optimization and matching of multiple factors are important problems. This paper provides a useful reference for the engineering application of plasma technology for wastewater treatment.