摘要
进行了垃圾焚烧飞灰的新型稳定化药剂——重金属螯合剂的实验室研究，探讨了本螯合剂处理焚烧飞灰的稳定化工艺流程及处理效果．结果表明，本螯合剂对飞灰中重金属的总捕集效率高达９７％以上，其效果显著优于无机稳定化药剂Ｎａ２Ｓ和石灰，且处理后的飞灰能达到重金属废物的填埋控制标准，同时，其处理后的飞灰的最大浸出量远低于无机稳定化药剂处理后的飞灰，且能在较宽的ｐＨ范围内都具有好的稳定化效果。
The synthesizing method of heavy metal chelating agent was explored in this paper.The technology process and treatment efficiency of the chelating agent in treating with fly ash were experimentally studied.The results indicated that the efficiency of heavy metal chelating agent in treating with fly ash was higher than that of using Na2S and lime,futhermore,the treated fly ash using this chelating agent can reach the landfilling standards for heavy metal waste.The maximum leaching quantity of heavy metal for the treated fly ash using this chelating agent was much lower than that for the treated fly ash using Na2S and lime,and it can keep stabilization within a broader pH value.Thus the risk of secondary pollution for the treated waste was reduced dramatically when the environment condition changes.
出处
《环境科学》
EI
CAS
CSCD
北大核心
1999年第3期13-17,共5页
Environmental Science
关键词
重金属
螯合剂
稳定化
垃圾焚烧飞灰
废物
heavy metal chelating agent,stabilization technology,fly ash,heavy metal wastes,solid waste treatment.
