摘要
在满足填埋控制标准的前提下,尽可能降低重金属危险废物固化/稳定化的增容比,能够有效节省填埋库容、延长填埋场运行年限。通过实验室的药剂筛选、配比试验,本研究以20∶1的乙基黄原酸钾与人造沸石作为稳定化药剂,对含镍危险废物进行了5 t/h规模的稳定化处置工程示范。实际运行结果显示,处置后危险废物中金属镍浸出浓度由10.8 mg/L降低至3 mg/L以下,增容比仅为1.08,满足填埋控制标准,可直接入场填埋。与水泥固化法相比,该方法工艺难度小、直接成本低,可节省10%的填埋库容。
Reduce the compatibilization of the solidification / stabilization process is important for heavy metal hazardous treatment,which can save capacity and prolong the operating life of landfill effectively. Based on the laboratory studies,potassium ethyl xanthate and artificial zeolite in a 20 ∶ 1 ratio were used to be the stabilizing agent for stabilizing nickelcontaining hazardous waste disposal demonstration projects. The results showed that after the disposal of hazardous waste,nickel concentration in the leaching decreased from 10. 8 mg / L to 3 mg / L or less,and while the ratio of compatibilization was less than 1. 08,and reached the landfill control standards,proved to be successful. Compared with the cement solidification,this method decrease the operation difficulties,cut down direct costs,and save landfill capacity up to 10%.
出处
《环境工程》
CAS
CSCD
北大核心
2015年第S1期530-534,共5页
Environmental Engineering
基金
南京市科委2012年科技专项(2012S02002)
关键词
重金属
镍
危险废物
药剂稳定化
工程示范
heavy metal
nickel
hazardous waste
chemical stabilization
engineering demonstration
