乙烯废碱液的中和处理与传统氧化处理、高级氧化处理的比较研究  

Comparison study on treatment of ethylene plant spent caustic by neutralization, classical and advanced oxidation

作　　者：何小荣[1] 

机构地区：[1]兰州石化职业技术学院

出　　处：《中国建材科技》2019年第6期86-89,共4页China Building Materials Science & Technology

基　　金：甘肃省教育厅2019年高等学校创新创业教育改革项目

摘　　要：本文对乙烯装置废碱液处理进行了研究。在单独中和处理的情况下,pH值低于5.5时达到硫化物的最大去除率。当pH=1.5时,硫化物的去除率达到99%,同时COD的最大去除率达到88%。在传统的H2O2氧化条件下,当pH=2.5和H2O2浓度为19mmol/L时,COD的最大去除率达到89%。采用Fenton法进行高级氧化,当H2O2/FeSO4比为7:1时,COD去除率最高可达96.5%。The treatment of spent caustic produced from ethylene plant was investigated.In the case of neutralization alone,it was found that the maximum removal of sulfide was at pH values below 5.5.The higher percentage removal of sulfides(99%at pH=1.5)was accompanied with the highest COD removal(88%).For classical oxidation using H2O2,the maximum COD removal percentage reached 89% at pH=2.5 and at a hydrogen peroxide concentration of 19mmol/L.For the advanced oxidation using Fenton’s process,it was found that the maximum COD removal of 96.5%was achieved at a hydrogen peroxide/ferrous sulfate ratio of 7:1.

关 键 词：乙烯废碱液 中和法 传统氧化法 高级氧化法 

分 类 号：TQ221[化学工程—有机化工]