The Application Of Discharge Plasma In Water Treatment

Plasma processes are among the emerging technologies for water treatment that were originated from the early 1980's. They have received extensive attentions of the researchers both home and abroad because of their high degradation efficiency, instrumental simplicity, and amenability to the environment. They can produce the powerful oxidizing free radicals to degrade the organic compounds and kill bacteria or virus in water through discharge under ordinary conditions.This paper includes six chapters:The chapter 1 reviews the application of low temperature discharge plasma technology in the treatment of water.Chapter 2 describes the degradation of o-chlorophenol by plasma in a contact glow discharge electrolysis reactor, and also the influence of the initial concentration, pH on the reaction kinetics.Chapter 3 provides the degradation of phenanthrene by plasma with contact glow discharge electrolysis, and discusses the influence of the initial concentration, pH and different mediums of phenanthrene on the reaction kinetic was investigated.Chapter 4 demonstrates a modified contact glow discharge electrolysis reactor and evaluates the modification in various aspects.Chapter 5 further studies the degradation of 4-Nitrotoluene by plasma with direct glow discharge electrolysis, and the influence of the initial concentration, pH on the reaction kinetic was investigated, focusing the mechanistic aspects.Chapter 6 summarizes the characteristics of CGDE and the common points in the degradation of organic compounds in water.