Treatment of Industrial Wastewater Utilizing Standalone and Integrated Advanced Oxidation Processes

Abstract

In recent years, advanced oxidation processes (AOPs) have attained very effective, promising and significant recognition, due to their high oxidative ability, fast reaction rate, easy operation and combination with other water treatment processes. AOPs, such as ozonation, ultraviolet radiation, Fenton reagent, ultrasound and electrochemical oxidation along with various hybrid AOPs viz. ozone/hydrogen peroxide process, ozone/UV radiation process, ozone/catalysts process, UV radiation/Fenton reagent, UV radiation/hydrogen peroxide process, sonolysis/Fenton process and sonolysis/ozonation process have been extensively investigated for the removal of a wide range of contaminants. This chapter outlines the utilization of both standalone and combined AOPs designed for the treatment of recalcitrant pollutants from industrial effluents. A comprehensive study based on the mechanism and utilization of these integrated oxidation treatment processes for detoxification, mineralization and degeneration of various inorganic and organic pollutants present in industrial effluents has been described. Sustainability study of different AOPs as well as economical aspects based on EEO values for both standalone and hybrid AOPs has also been covered. Moreover, issues related to real industry and synthetic wastewater treatment, reaction mechanism, chemical performances, benefits and limitations of standalone and hybrid AOPs during the oxidation of various contaminants present in industrial effluents are extensively discussed, and suggestions for future research aspects are provided.