Na_3PO_4-粉煤灰胶结材组合工艺处理垃圾焚烧飞灰  

DISPOSAL OF MSWI FLY ASH THROUGH A COMBINED Na_3PO_4-COAL ASH BINDER IMMOBILIZATION PROCESS

作　　者：张大捷[1] 贺杏华[2] 侯浩波[1] 

机构地区：[1]武汉大学资源与环境学院,湖北430079 [2]中冶南方工程技术有限公司,武汉430080

出　　处：《环境工程》2007年第2期58-60,共3页Environmental Engineering

基　　金：武汉大学创新基金资助(205270026)

摘　　要：垃圾焚烧飞灰由于重金属含量高,被认为是危险废物,必须要加以稳定化处理。Na3PO4-粉煤灰组合工艺被用来稳定-固化焚烧飞灰中的重金属。结果表明,Na3PO4稳定-粉煤灰胶结材固化组合处理飞灰降低重金属浸出浓度明显,1.5%Na3PO4,25%掺量的粉煤灰胶结材固化飞灰后,养护7 d即可满足填埋标准。MSWI fly ash is considered a hazardous waste because of high heaavy metal concentration and must be treated.Combined Na_3PO_4-coal ash immobilization process was used to stabilize and solidify the heavy metal of MSWI fly ash.Results show that the disposal effect is good,and the MSWI fly ash can reach landfill standard by mixing 1.5% Na_3PO_4 and 25% coal ash binder after 7 d curing.

关 键 词：垃圾焚烧飞灰 Na3PO4 粉煤灰 稳定-固化 

分 类 号：X701[环境科学与工程—环境工程]