Treatment of wastewater in Algeria by a cold discharge

Abstract

Different processes, both in addition or in substitution biological treatment, have been proposed and developed order to remove different pollutants. One of these processes, the oxidation, seems to be of most interest. An oxidation process can also be envisaged using electrical methods. Indeed, electrical discharges produced either directly in water or in humid air in contact with the liquid to be treated, generate highly reactive species such as ozone. This shows that the electric discharge must be able to effectively degrade different types of pollutants. The objective of this work is to realize a study of the mechanisms of cold plasma in water and evaluate their effectiveness to oxidize some pollutants in wastewater. In order to properly assess energy efficiency of this process, we realized an ozone generator cylindrical shape in an attempt to produce free electrons from the electrical energy supplied to generate cold plasma in water. This useful study is to demonstrate the efficiency of this energy conversion through analysis methods allowing the measurement of the pollutant concentration of wastewater.