Juan Qiu, Minghui Tang, Yaqi Peng, Shengyong Lu , Xiaodong Li, Jianhua Yan

State Key Laboratory for Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Zhejiang 310027, China



Download Citation: ||https://doi.org/10.4209/aaqr.2019.11.0610 


Cite this article:

Qiu, J., Tang, M., Peng, Y., Lu, S., Li, X. and Yan, J. (2020). Characteristics of PCDD/Fs in Flue Gas from MSWIs and HWIs: Emission Levels, Profiles and Environmental Influence. Aerosol Air Qual. Res., https://doi.org/10.4209/aaqr.2019.11.0610


HIGHLIGHTS

  • Characteristics of PCDD/Fs in flue gas from MSWIs and HWIs was studied.
  • Emission factors and annual emission amounts in the stack gas were estimated.
  • PCDD/F levels and profiles in ambient air and soil around incinerators were discussed.
 

ABSTRACT


Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the flue gas from two types of waste incinerators (municipal solid waste incinerators and hazardous waste incinerators) the most commonly used in China were investigated in this study. The PCDD/F emissions from the stack gas of the waste incinerators showed a large variation from 0.016 to 0.29 ng I-TEQ∙m-3 with an average value of 0.103 ng I-TEQ∙m-3. The emission factors of PCDD/Fs were in the range of 0.056-0.607 μg I-TEQ∙t-1 (average 0.235 μg I-TEQ∙t-1) for municipal solid waste incinerators (MSWIs) and 0.07-3.27 μg I-TEQ∙t-1 (average 1.03 μg I-TEQ∙t-1) for hazardous waste incinerators (HWIs), respectively. It was estimated that 10.2-88.0 mg I-TEQ (average 35.0mg I-TEQ) and 1.13-53.0 mg I-TEQ (average 17.1 mg I-TEQ) of PCDD/Fs were annually released to the atmosphere, respectively from MSWIs and HWIs. The level and congener patterns of 17 species of PCDD/Fs in the ambient air and in soil samples around the MSWIs and HWIs were investigated to evaluate the influence of PCDD/F emission on the environment. The PCDD/F concentrations in the ambient air from the 5 MSWIs and 4 HWIs ranged from 0.088 to 13.9 pg I-TEQ∙m-3 with an average value of 0.185 pg I-TEQ∙m-3. The soil samples in the vicinity of MSWIs and HWIs presented concentrations between 0.68 and 16.0 ng I-TEQ·kg−1 with an average value of 3.98 ng I-TEQ∙kg-1. This study showed that PCDD/F emission from the incineration plants had an obvious impact on the surrounding ambient air.


Keywords: PCDD/Fs; Flue gas; Emission factor; Air; Soil.


Impact Factor: 2.735

5-Year Impact Factor: 2.827


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