摘要
铬污染土壤的还原稳定化修复是重点研究的课题,选择硫化亚铁、硫酸亚铁、四氧化三铁、纳米零价铁等四种还原剂,通过室内实验的方式,比较四种还原剂对六价铬的去除效果,结果表明,硫酸亚铁对土壤中六价铬的还原能力最强,对土壤中六价铬的去除率达到88.75%。同时,还探讨了石英砂、高岭土、石灰石等三种不同稳定化药剂与还原剂联用时,对土壤中六价铬和总铬的处理效果。
The reduction and stabilization of chromium-contaminated soil is the key topic of this paper.In this paper,four kinds of reducing agents such as ferrous sulfide,ferrous sulfate,triiron tetroxide and nano-zero-valent iron are selected.The removal effect of the reducing agent on hexavalent chromium showed that the ferrous sulfate had the strongest reducing ability to hexavalent chromium in the soil,and the removal rate of hexavalent chromium in the soil reached 88.75%.At the same time,the paper also discusses the treatment effect of hexavalent chromium and total chromium in soil when three different stabilizers such as quartz sand,kaolin and limestone are combined with reducing agent.
出处
《化工设计通讯》
CAS
2019年第11期219-220,共2页
Chemical Engineering Design Communications
关键词
铬污染
土壤修复
还原剂
稳定化药剂
chromium pollution
soil remediation
reducing agent
stabilizing agent
