Size distribution and number concentration of particles at the stack of a municipal waste incinerator
Size distribution and number concentration of particles at the stack of a municipal waste incinerator
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DOI：
10.1016/j.wasman.2008.06.029
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发表时间：
2009-02-01
期刊：
影响因子：
8.1
通讯作者：
Stabile, L.
中科院分区：
文献类型：
--
作者：
Buonanno, G.;Ficco, G.;Stabile, L.
废物燃烧过程产生了大量的颗粒和气态产物。特别重要的是从所有燃烧源大量排放的超细颗粒（空气动力学直径小于0.1 μ m）。最近的毒理学和流行病学研究结果表明，细颗粒和超细颗粒可能对健康和环境构成风险。对燃烧源的微粒排放量进行量化十分重要：（一）审查排放源是否符合规定;（二）在地方、区域和国家各级建立此类排放清单，以制定与空气质量有关的适当管理和控制战略;（iii）预测污染源所涉地区的环境空气质量;（iv）对人群进行污染源解析和暴露评估;和/或生态系统的影响。为了从健康和环境风险降低的角度控制和减少颗粒物，有必要充分了解排放源对空气中浓度的相对和绝对贡献。为了这些目的，在烟道气中测量城市垃圾焚烧厂的废气中颗粒的质量和数量的浓度和尺寸分布。获得的质量浓度远低于两条焚烧线的每日阈值，质量粒度分布平均非常稳定。总数量浓度在1 × 10（5）和2 × 10（5）颗粒/cm（3）之间，并且从一次测试到另一次测试平均相对稳定。测量值和与其他点源的比较表明，在烟道气中的颗粒的总数量浓度非常低，揭示了烟道气处理的重要性，也为超细颗粒。此外，对于线性源（高和轻型车辆），比较表明，就颗粒物总数而言，排放量可以忽略不计。(C)2008爱思唯尔有限公司保留所有权利。
A large number of particles and gaseous products are generated by waste combustion processes. Of particular importance are the ultrafine particles (less than 0.1 mu m in aerodynamic diameter) that are emitted in large quantities from all the combustion sources. Recent findings of toxicological and epidemiological studies indicate that fine and ultrafine particles could represent health and environmental risks. Quantifying particulate emissions from combustion sources is important: (i) to examine the source status in compliance with regulations; (ii) to create inventories of such emissions at local, regional and national levels, for developing appropriate management and control strategies in relation to air quality; (iii) to predict ambient air quality in the areas involved at the source and (iv) to perform source apportionment and exposure assessment for the human populations and/or ecological systems involved. In order to control and mitigate the particles in the view of health and environmental risk reduction, a good understanding of the relative and absolute contribution from the emission sources to the airborne concentrations is necessary. For these purposes, the concentration and size distribution of particles in terms of mass and number in a waste gas of a municipal waste incineration plant were measured in the stack gas. The mass concentrations obtained are well below the imposed daily threshold value for both incineration lines and the mass size distribution is on average very stable. The total number concentrations are between 1 x 10(5) and 2 x 10(5) particles/cm(3) and are on average relatively stable from one test to another. The measured values and the comparison with other point sources show a very low total number concentration of particles at the stack gas, revealing the importance of the flue gas treatment also for ultrafine particles. Also in respect to linear sources (high and light duty vehicles), the comparison shows a negligible emission in terms of the total number of particles. (C) 2008 Elsevier Ltd. All rights reserved.