医疗垃圾焚烧炉飞灰水泥固化体的浸出特性研究  

Leachability of Cement Solidified Forms for Medical Waste Incineration Fly Ash

作　　者：魏国侠[1] 刘汉桥[1] 

机构地区：[1]天津城市建设学院,天津300384

出　　处：《环境卫生工程》2009年第1期12-14,共3页Environmental Sanitation Engineering

基　　金：国家自然科学基金项目(20806051);国家重点基础研究发展规划(973)项目(2005CB724206)

摘　　要：为检验医疗垃圾焚烧飞灰的水泥固化处理效果,对不同养生龄期及不同飞灰/水泥配比下飞灰水泥固化体重金属渗沥特性进行了实验研究。结果表明:随养生龄期的延长,水泥固化体中的Zn、Pb、Cu等重金属渗沥浓度总体上是逐渐降低的;掺40%飞灰、60%飞灰养生28d的水泥固化体中Pb渗沥浓度分别为5.634、6.032mg/L,超过5mg/L的限值。若按照目前国内生活垃圾焚烧飞灰水泥固化工艺的配比(水泥掺量40%以下),重金属渗沥指标不能达到填埋要求。In order to check effect of cement solidification for medical waste incineration fly ash （FA）, the solidified forms with different setting time and different FA/cement ratios were examined in terms of heavy metals leachability. The results showed that Zn, Pb and Cu leaching concentrations of the solidified forms were reducing with delay of setting time. Pb leaching concentrations of the solidified forms incorporated 40% FA and 60% FA in setting time of 28 days were respectively 5. 634 and 6. 032 mg/L, which exceed the leaching standard （5 mg/L）. If cement dosages was below 40% by weigh in the mixtures according to actual solidification process of domestic waste incineration fly ash, the leaching index of heavy metal would not meet the landfill requirement.

关 键 词：医疗垃圾 飞灰 水泥 固化 重金属 

分 类 号：X799.5[环境科学与工程—环境工程]