This document provides a performance evaluation method of treatment technology using advanced oxidation processes (AOPs) for water reuse treatment. It introduces a system of evaluating water quality to validate AOP performance through typical parameters such as the concentration of hydroxyl radicals.st edition 2021-06 Guidelines for performance evaluation of treatment technologies for water reuse systems — Part 7: Advanced oxidation processes technology Lignes directrices pour l’évaluation des performances des techniques de traitement des systèmes de réutilisation de l’eau — Partie 7: Technologie des processus d'oxydation avancés Reference number ISO 20468-7:2021(E) ？ ISO 2021 ISO 20468-7: