Fenton氧法预处理高浓度有机胺废水的研究

摘要

采用Fenton氧化法对高浓度有机胺废水进行预处理,研究了催化剂的种类、反应时间、过氧化氢投加量、催化剂的投加量对TOC去除率的影响.结果表明:在反应pH为3.0～3.5,反应温度30℃,过氧化氢投加质量分数为3.5％,混合催化剂的投加质量浓度为5g/L条件下反应2.0 h,混合废水TOC可由815 mg/L降至315 mg/L,TOC去除率达到61.3％.分别对有机胺废水中的特征污染物——乙胺、二甲基乙醇胺、三乙醇胺进行预处理,去除率可分别达到35.5％、51.5％、61.8％.%The highly concentrated organic amines wastewater has been pretreated by Fenton oxidation process. The effects of the variety of catalyst, reaction time, hydrogen peroxide dosage, catalyst dosage on TOC removal rate are studied. The results show that:under the following conditions,such as pH 3.0-3.5,reaction temperature 30℃ , hydrogen peroxide dosage 3.5%,dosage of mixed catalyst 5 g/L,and reaction time 2.0 h, the mixed wastewater TOC drops by a wide margin from 815 mg/L to 315 mg/L,T0C removal rate reaches 61.3%. The removal of characteristic pollutants,such as ethylamine,dimethyl ethanolamine and triethanolamine are treated,and their removal rates reaches 35.5%,51.5%,and 61.8%,respectively.