文献类型：期刊文献

中文题名：催化臭氧氧化法处理煤化工高盐废水

英文题名：TREATMENT OF HIGH-SALT WASTEWATER FROM COAL CHEMICAL INDUSTRY BY CATALYTIC OZONE OXIDATION

作者：任明[1];孙淑英[1];金艳[1];宋兴福[1];于建国[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2018

卷号：36

期号：8

起止页码：54

中文期刊名：环境工程

外文期刊名：Environmental Engineering

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD_E2017_2018】；

基金：中国石化重点科技项目:煤气化高含盐水分质结晶资源化利用关键技术项目(317010-3)

语种：中文

中文关键词：催化臭氧氧化;高盐废水;臭氧分解;羟基自由基;表面羟基

外文关键词：catalytic ozone oxidation;high-salt organic wastewater;ozone decomposition;hydroxyl radicals;surface hydroxyl

摘要：采用自制催化剂催化臭氧氧化处理煤化工高盐废水,考察了催化剂性能、催化臭氧氧化影响因素,并进行了催化臭氧氧化机理研究。实验结果表明:自制催化剂抗压强度为1 685 N,45 d磨损率为1.67%;在p H=8.1,催化剂投加量为7 g/L,臭氧投加量为13 mg/min的条件下,COD去除率为45%,色度去除率为85%。由傅里叶红外光谱分析可知,催化剂表面存在羟基基团,催化臭氧分解速率比单独臭氧分解速率快,在相同时间内催化剂可促进臭氧分解产生更多·OH,由此表明催化臭氧氧化机理遵循羟基自由基反应机理。
The high-salt organic wastewater was treated by catalytic ozone oxidation with self-made catalyst. The catalyst performance and the effects of catalytic ozone oxidation were studied and the mechanism of catalytic ozone oxidation was investigated. The experimental results showed that the compressive strength of self-made catalyst was 1 685 N, and the wear rate was 1.67% for 45 days. Under the experimental conditions of catalyst dosage of 7 g/L, ozone dosage of 13 mg/min, and pH of 8.1 , the removal rate of COD and ehroma were 45% , 85% , respectively. FTIR analysis showed that there were hydroxyl groups on the surface of the catalyst. The catalytic ozone decomposition rate was faster than that of the ozone alone, at the same time, the catalyst promoted ozone decomposition to produce more hydroxyl radicals. Thus, it was proved that the mechanism of catalvtic ozone oxidation followed hvdroxvl radical reaction mechanism.