络合萃取法预处理TNT红水的研究  

Pretreatment of TNT Red Water by Complex Extraction

作　　者：王倩[1] 张衍文 李明 尹宏权[1] 马如意[1] 杨新涛[1] 陈甫雪[1] 吴玉凯[1] 

机构地区：[1]北京理工大学化工与环境学院,北京100081 [2]辽宁庆阳特种化工有限公司,辽宁庆阳111002

出　　处：《含能材料》2016年第7期703-708,共6页Chinese Journal of Energetic Materials

基　　金：北京理工大学校基金(30900204F1105)

摘　　要：以三辛胺为络合萃取剂，用络合萃取法预处理TNT生产过程中产生的TNT红水。以化学需氧量（COD）的去除率和萃取剂能够循环使用为目标，研究了废水pH值、搅拌速度、搅拌时间、萃取剂与废水的比例等因素对萃取效果的影响。进行了间歇实验和连续实验的研究。结果表明，pH值为0．9、搅拌速度220r·min-1、搅拌时间30min时萃取效果最好。连续实验的结果表明：通过改变萃取相比可实现控制出水COD的含量，萃取剂与废水体积比为2．4时，普通TNT红水的COD去除率达到99．4％；军品TNT红水的COD去除率达99．0％。最佳萃取剂与废水比例为2．3—2．4，萃取剂可循环使用。The TNT red water in the process of TNT production was pretreated by the complex extraction using trinoctylamine as a complex extraction agent. Seeing the removal rate of chemical oxygen demand （COD） and recycle use of extraction agent as goal, the effect of pH value, stirring speed, stirring time and the ratio of extraction agent and wastewater on the extraction efficiency was investigated. A study of intermittent experiment and continuous experiment was carried out. Results show that the extraction efficiency is the best when pH value is 0.9, stirring speed is 220 r · min-1 , stirring time is 30 min. When the volume radio of the extraction agent and wastewater is 2.4, the COD removal rate of common TNT red water reaches 99.4% by realizing the con- trol of content of COD in effluent water via changing the extraction phase ratio. The COD removal rate of military TNT red water reaches 99.0%. When the volume ratio of extraction agent and wastewater is 2.3-2.4, the extraction agent can be recycled.

关 键 词：络合萃取 TNT红水 间歇实验 连续实验 

分 类 号：X789[环境科学与工程—环境工程] O658.2[理学—分析化学]