Decolorization and Treatment of Colored Wastewater Using Dielectric Barrier Discharge Cold Plasma Reactor

Dyes have many uses due to their variety and complex structure.In recent years, wastewater from the production or consumption of dyes in various industries have increased and become a serious threat to the environment and human health.The effect of cold plasma as a new and advanced technology for the treatment of dye from wastewater is presented in this review paper. This method can be used for various applications such as treatment and pre-treatment of effluents, removal of pigments, and hazardous chemicals from effluents.In this wastewater treatment system, different cases such as characteristics of effluent, target materials, type of suitable plasma discharge, reactor type, toxicity experiments, biodegradability tests of plasma generated intermediates, environmental compatibility assessment of combined technologies, and economic estimation were considered. According to the studies, the results indicated the positive effects of cold plasma for decolorization of wastewater and also increased efficiency of modern wastewater treatment systems.