Emission characteristics and impact factors of air pollutants from municipal solid waste incineration in Shanghai, China
Emission characteristics and impact factors of air pollutants from municipal solid waste incineration in Shanghai, China
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DOI：
10.1016/j.jenvman.2022.114732
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发表时间：
2022-02-26
影响因子：
8.7
通讯作者：
Huang, Yuandong
中科院分区：
文献类型：
--
作者：
Chen, Xiaojia;Li, Junxiang;Huang, Yuandong
城市生活垃圾焚烧产生的大气污染物是大气污染的主要问题之一。中国垃圾焚烧的最新排放情况在很大程度上是未知的。排放因子是估算垃圾焚烧排放的关键参数。利用2017年至2019年的连续排放监测系统数据，建立了中国上海城市生活垃圾焚烧的本地化排放因子。我们的研究结果显示，2017-2019年期间的排放系数分别为9.80 g t（-1）PM，46.62 g t（-1）SO2，812.68 g t（-1）NOx，25.84 g t（-1）CO和17.49 g t（-1）HCl，比2010年低近1.7-24.2倍，这意味着应更新现有的EFs，以避免高估中国的城市生活垃圾排放量。与2010年相比，2019年的PM、SO2、CO和HCl排放量分别大幅减少84%、69%、47%和72%，但NOx增加了106%，尽管相应的垃圾焚烧量增加了356%。目前，城市固体废物焚烧产生的空气污染物水平已达到国家现行排放标准，以及欧盟更严格的标准（98.87%-99.91%）。研究结果表明，我国应尽快修订现行的垃圾焚烧标准，以利于今后垃圾焚烧的预防和控制。控制上海乃至大中华地区城市生活垃圾焚烧过程中氮氧化物的排放仍具有挑战性。
The emission of air pollutants from the municipal solid waste (MSW) incineration is one of the major concerns in air pollution. The up-to-date emission situation for Chinese MSW incineration is largely unknown. The emission factors (EFs) are the key parameters to estimate the emissions from MSW incineration. The localized EFs from MSW incineration in Shanghai, China were established using continuous emission monitoring system data from 2017 to 2019. Our results showed that the EFs were 9.80 g t(-1) of PM, 46.62 g t(-1) of SO2, 812.68 g t(-1) of NOx, 25.84 g t(-1) of CO, and 17.49 g t(-1) of HCl for the period 2017-2019, nearly 1.7-24.2 times lower than those in 2010, implying that the current EFs should be updated to avoid overestimation of MSW emissions in China. Compared with 2010, the emissions of PM, SO2, CO, and HCl in 2019 were significantly reduced by 84%, 69%, 47%, and 72%, respectively, except for NOx with a 106% increase, although the corresponding MSW incineration amount increased by 356%. The current levels of air pollutants from MSW incineration have already met the current national emission standard as well as the stricter standard of the European Union (98.87%-99.91%). Our findings suggest that China should update the current standards of MSW incineration, which can be a benefit for the prevention and control of MSW incineration in the future. It is still challenging to control NOx emissions from MSW incineration for Shanghai and even greater China.