Review on integrated advanced oxidation processes for water and wastewater treatment

Abstract

There is currently a steadily growing concern on a global scale for the creation of alternative water reuse technologies, primarily geared toward industry and agriculture. Due to their high chemical stability and/or poor biodegradability, advanced oxidation processes (AOPs) are viewed in this context as a highly competitive water treatment method for the removal of these organic pollutants. AOPs have an immense amount of potential for treating a variety of these contaminants and enhancing wastewater biodegradability. They still have some significant drawbacks, such as high costs of operation, energy intensive and use of additional chemicals. Combining AOPs with other technique enhances the separation efficiency as compared to individual AOP. AOP is an emerging technology trying to find its place in competition with other large scale industrial processes for wastewater treatment and to counter a major drawback of AOP i.e. cost considerations Integration of AOP with conventional treatment techniques have been studied qualitatively and quantitatively along with their advantages and disadvantages. Quantitative parameters like EEO and performance of each process is discussed in detail with critical comments on each process along with future prospective is discussed in conclusion. This paper reviews recent research advancement in the field of conventional AOP and integrated AOPs such as integrated AOP-biological treatment, integrated AOP-membrane processes, AOP in microreactors, microwave enhanced AOP, and Catalytic wet air oxidation.