废弃物燃烧产生的可吸入颗粒物中金属元素的排放特性研究
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摘要: 将纸屑、甘蔗渣、木粉、谷壳、垃圾衍生燃料（RDF）五种废弃物进行燃烧，采集其烟气中可吸入颗粒物（PM10）样品并分析，获得了颗粒物中金属元素的质量分数和排放特性，并与其相应的原料和灰烬中的金属元素质量分数比较。结果显示，废弃物燃烧的颗粒物中金属元素的种类与燃烧的物料有关；纸屑的颗粒物中金属元素的质量分数最低，RDF的最高，其余三种生物质废弃物的质量分数较相近；在五种样品中，一些重金属的质量分数很高，比土壤中的质量分数高出很多倍；金属元素在灰烬和颗粒物中的分布情况与金属元素的性质密切相关，且在可吸入颗粒物上有明显的富集。Abstract: Several wastes including paper scrap, bagasse, wood powder, chaff and refused derived fuel (RDF) were burned. The inhalable particulate matter (PM10) emitted from them was sampled and analyzed. The mass fraction and emission character of metal elements in PM10 were obtained, which were compared with those in relevant raw materials and ashes. The results show that the kinds of metal in PM10 are related to the materials. The mass fraction of metal elements in PM10 from paper scraps is the lowest while that from RDF is the highest. It is also found that the mass fraction of some heavy metals are very high, which are several times of those in soil. The metal distribution in PM10 and ashes is closely correlated to the character of metals. The metal elements are obviously concentrated in PM10.
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Key words:
- waste /
- inhalable particulate(PM10) /
- metal element /
- emission character
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