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摘要
Based on the field measured data in 2018, this study takes Shandong Province as a typical case study and comprehensively considers the production technology, production capacity, incinerator type and annual MSW incineration amount, to establish PCDD/Fs emission inventory of municipal solid waste (MSW) incineration power plants in Shandong Province using the bottom-up approach and introduce CALPUFF model to quantitatively evaluate environmental impacts caused by PCDD/Fs emissions under current and different scenarios. The results show that the range of PCDD/Fs emission factors was 24.68~290.90ng TEQ/t, with an average value of 75.11ng TEQ/t. The total emission was 1.07g TEQ in 2018. The estimated emission factors and total emissions were lower than existing studies. In terms of incinerator type, the emission factor of grate firing incinerators was lower than that of fluidized bed incinerators, indicating that it has a good control effect on PCDD/Fs emissions. In terms of spatial distribution, the largest MSW incineration amount was mainly concentrated in Weifang, Jining and Zibo city, and total emissions and atmospheric simulated concentrations were also relatively high. In terms of scenario comparison, the future scenario with stricter standards and improved MSW incineration rate was more in line with the requirements of the future development planning of the MSW incineration industry in Shandong Province, and can also achieve the goal of reducing the PCDD/Fs emissions and environmental impacts. Compared with the baseline scenario, the average annual concentration contribution in this scenario will be reduced by 22.73% and 24.19%, respectively.
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