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Environmental Engineering Research 2023;28(5): 220658 DOI: https://doi.org/10.4491/eer.2022.658
Oxidative degradation of micropollutants by a pilot-scale UV/H2O2 process: Translating experimental results into multiphysics simulations
Dongwon Cha, Gyuseung Lim, Hwajoo Joo, Jeyong Yoon, and Changha Lee 
School of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Corresponding Author: Changha Lee ,Tel: +82-2-880-8630, Fax: +82-2-888-7295, Email: leechangha@snu.ac.kr
Received: September 19, 2022;  Accepted: November 9, 2022.
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ABSTRACT
The UV/H2O2 system is an effective advanced oxidation process (AOP) widely used for micropollutant abatement in drinking water and wastewater treatment plants. Recently, multiphysics simulations based on computational fluid dynamics (CFD) and chemical kinetics have shown promise by accurately depicting water treatment processes. This study demonstrates the feasibility of incorporating experimental results from a pilot-scale UV/H2O2 system into a multiphysics model. Various factors affecting contaminant degradation and oxidant production such as H2O2 dose, H2O2 injection methods, and reactor size were investigated. The obtained data became the basic building blocks when developing the numerical model. The model predictions exhibited a good correlation with the experimental results. 3-D visualizations using the model allow further in-depth analysis of the distribution of oxidants and target pollutant in the UV photoreactor, providing insights into the possibilities of reactor optimization.
Keywords: AOP | Multiphysics simulation | OH radical | Pilot-scale | UV/H2O2
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