东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (4): 533-536.DOI: -

• 论著 • 上一篇    下一篇

医疗垃圾焚烧灰特性实验研究

刘汉桥;蔡九菊;齐鹏飞;田冬青;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-04-15 发布日期:2013-06-24
  • 通讯作者: Liu, H.-Q.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展规划项目(2005CB724206)

Experimental study on characteristics of ashes from hospital waste incineration

Liu, Han-Qiao (1); Cai, Jiu-Ju (1); Qi, Peng-Fei (1); Tian, Dong-Qing (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-04-15 Published:2013-06-24
  • Contact: Liu, H.-Q.
  • About author:-
  • Supported by:
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摘要： 医疗垃圾焚烧灰的固化/稳定化处理取决于其理化特性.利用XRF,XRD,SEM和AAS对布袋飞灰(FA1)、烟道飞灰(FA2)、底灰(BA)在化学成分、物相、微观形貌、重金属含量和渗沥行为等方面的特性进行了研究.结果表明:FA1中Cl,SO3,碱金属和活性炭含量较高,不宜直接作为水泥的部分替代物用于建筑,且Cd,Zn,Pb的渗沥浓度超过危险废物填埋允许限值,处理后方能进入危废填埋场填埋;FA2,BA的主要物相分别为硬石膏、复杂硅酸盐,重金属渗沥浓度低于危险废物规定的阈值.

关键词: 医疗垃圾, 焚烧灰, 物相, 重金属, 渗沥

Abstract: Solidification/stabilization operation of the ashes from hospital waste incinerator depends on their physicochemical properties. The characteristics of three ashes samples from different positions in the incinerator were investigated with XRF, XRD, SEM and AAS for their chemical composition, mineralogy, morphology, metal contents and leaching behavior of heavy metals, aiming at finding a safe and efficient disposal method. The results indicated that the bag fly ash (FAl) has high chloride/sulphate content and a feature of loss on ignition (LOI) as well as the alkali metal, and its leached concentrations of Cd, Zn and Pb in FA1 far exceed landfill regulatory thresholds of the hazardous waste and should be pretreated prior to landfilling. The CaSO4 is found very high in the flue ash (FA2) and bottom ash (BA) mainly consists of silicates, and they have low leachability and could be classfied as non-hazardous waste.

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