Chapter 4 - AOPs for municipal and tannery based industrial wastewater treatment

Abstract

The world requires wastewater remediation right now. By oxidation reactions using strong, nonselective hydroxyl radical (OH), advanced oxidation processes (AOPs) are regarded as a viable method for eliminating resistant organic compounds from wastewater. The AOP method is a chemical technique for purification, which is used to get rid of undesirable organic waste as well as to break down and disintegrate substances that are difficult or impossible to entirely break down using oxidation and traditional biological techniques. The production of reactive free radicals, under which the hydroxyl radical (OH), is the most significant, is necessary for the effectiveness of AOPs. Since powerful oxidants may easily break down recalcitrant organic contaminants and eliminate certain inorganic contaminants from wastewater, AOPs were widely used for treating various forms of wastewater. The AOP technique's primary benefit is its capacity to generate significant amounts of radical hydroxyl (OH). This radical is a powerful oxidant and can convert the majority of organic molecules to CO2, mineral acids and water. It is crucial to use cutting-edge oxidation techniques and identify the most effective sewage cleanup technique. Since they pose a major risk to human health, high concentrations of harmful organic contaminants frequently found during domestic/municipal/industrial wastewater treatment have drawn scientific interest worldwide. Higher degradation efficiencies, a decrease in sludge creation, less chemical use, and a higher decrease in the impact on the environment are some benefits of combining the Hydrodynamic cavitation (HC) technique with other AOPs over other traditional strategies of wastewater treatment.