Decomposition of Dioxins in wastewater by ozone/UV irradiation

Abstract

We experimen し ally investigated the decompositiQn of dioxi員 s and endocrine disrupting organic compounds 正 n the landfillIeachates by the ozone ／ ultraViolet irracliation ( 03／U＞) ， one of the advanced oxidation process ． As the result or this study ， the dioxins were decomposed to over 90％ by O3 ／ UV ． The cQrlcentration of dioxins was less than the enVironmental criterion ． The decomposition rate of bisphenol A and benzophenone were over gO％， and the corlcentraUon or those were below O ． 工μ g／L ． Therefbre the dioxins and endocrine disrupting organic compounds were treatable simuEtaneously ． However ， the decomposition rate or DEHP was 57． 5％， it was iow compared to the o ヒ hers ．