Xiaoqing Lin1, Qunxing Huang 1, Tong Chen1, Xiaodong Li1, Shengyong Lu1, Hailong Wu2, Jianhua Yan1, Miaosheng Zhou3, Hua Wang3

  • 1 State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, Zhejiang Province 310027, China
  • 2 Environment Protection Bureau of Zhoushan, Zhoushan, Zhejiang province 316021, China
  • 3 Hangzhou Lijia Environmental Service Co., Ltd, Hangzhou, Zhejiang Province 311101, China

Received: March 5, 2013
Revised: June 10, 2013
Accepted: June 10, 2013
Download Citation: ||https://doi.org/10.4209/aaqr.2013.03.0068  

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Cite this article:
Lin, X., Huang, Q., Chen, T., Li, X., Lu, S., Wu, H., Yan, J., Zhou, M. and Wang, H. (2014). PCDD/F and PCBz Emissions during Start-up and Normal Operation of a Hazardous Waste Incinerator in China. Aerosol Air Qual. Res. 14: 1142-1151. https://doi.org/10.4209/aaqr.2013.03.0068


 

ABSTRACT


The PCDD/F emissions from incinerator start-up are a major contributor to the total amount of such emissions, as has been reported in studies of numerous municipal solid waste incinerators. However, very few studies have examined the start-up process at hazardous waste incinerators (HWIs). In this work we studied the emissions of PCDD/Fs and other pollutants, such as PCBz, at the stack during start-up and normal operations in a HWI. We found that the PCDD/F emissions during start-up were greater than during normal operations, and were comparable to the annual emissions during the normal combustion regime. The emissions of PCDD/Fs were highest during start-up when the temperature was around 500°C, reaching 59.5 ng/Nm3 (5.49 ng I-TEQ/Nm3) when no APCDs were applied. The emission values of PCDD/Fs during start-up with the application of APCDs and during normal operations were very low, which indicates the importance of APCDs when starting up a HWI, as well as before feeding waste. The chlorination degree, the ratio of PCDFs/PCDDs and the congener profiles were also discussed during start-up and normal operations, with the results suggesting different formation mechanisms of PCDD/Fs. PCBz emissions are two or three orders of magnitude higher than those of PCDD/Fs, and 1,2,4,5-TeCBz was the best correlated PCBz used as a PCDD/F indicator in real HWI flue gas.


Keywords: PCDD/Fs; Start-up; Hazardous waste incinerator; PCBz


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