In this paper, an oxidation system composed of H2O2/Fe2+ is used to catalytically oxidize the cleaning wastewater containing organophosphorus, and then conventional physical and chemical treatment methods are used to treat it, so as to achieve the purpose of removing organophosphorus and reducing COD index. Various factors affecting the reaction of Fenton system were analyzed, including the addition amount of H2O2, the addition amount of FeSO4, the reaction pH and the reac-tion time. Finally, the optimal reaction conditions were summarized: the addition amount of H2O2 was 50 mL/L, the addition amount of FeSO4 was 15 g/L, the initial pH was 3.0, and the reaction time was 2 h. The organophosphorus-containing cleaning wastewater in the experiment was derived from the waste water containing hydroxy-ethylenediphosphonic acid dis-charged by cleaning the glue on the surface of automobile glass.
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