TY - JOUR
T1 - Contribution of power plant emissions to PM2.5 over Beijing-Tianjin-Hebei Area during heavy pollution periods
AU - Du, Xiaohui
AU - Xu, Jun
AU - Liu, Houfeng
AU - Liu, Jun
AU - He, Youjiang
AU - Dang, Hongyan
AU - Meng, Fan
N1 - Publisher Copyright:
© 2016, Editorial Board, Research of Environmental Sciences. All right reserved.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - PM2.5 contributions from different emission sources and source regions over the Beijing-Tianjin-Hebei area were analyzed by implementing a simulation of the Comprehensive Air Quality with extensions (CAMx) model equipped with Particulate Source Apportionment Technology (PSAT) technique during a period when heavy pollution happened frequently. By utilizing the PSAT results, a method to calculate the efficiency of environmental impacts (EESCR) using source contribution ratio for each emission sector was designed. A scenario analysis using power plant energy to replace domestic consumption (electric power alternative) was conducted in the present study. The results showed that emissions from the power plant sector made a rather low contribution (less than 10%) to PM2.5 during the heavy polluted periods over the Beijing-Tianjin-Hebei area. The contribution of the power plant sector from regions other than the Beijing-Tianjin-Hebei area was greater than that from other cities over the Beijing-Tianjin-Hebei, which was greater than that from local sources. This was attributed to the power plant sector being an elevated source. Meanwhile, the sequence of contributions from both industrial and domestic sectors corresponding to regions showed the opposite trend. EESCR calculated for PM2.5 components and the major precursors showed that the EESCR value of the power plant sector was less than y=1/2x, and much lower than the other sectors. Thus, emission mitigation of sources other than power plants should be the key to improving air quality over the Beijing-Tianjin-Hebei area. The scenario analysis of electric power alternatives showed that it is a feasible way to reduce PM2.5 over the Beijing-Tianjin-Hebei area. Therefore, by taking full advantage of high stack emissions and the efficiency of centralized disposal in the power plant sector, while alleviating the emission increment caused by the growth of energy capacity, electric power alternatives should become one of the effective ways to improve the regional air quality.
AB - PM2.5 contributions from different emission sources and source regions over the Beijing-Tianjin-Hebei area were analyzed by implementing a simulation of the Comprehensive Air Quality with extensions (CAMx) model equipped with Particulate Source Apportionment Technology (PSAT) technique during a period when heavy pollution happened frequently. By utilizing the PSAT results, a method to calculate the efficiency of environmental impacts (EESCR) using source contribution ratio for each emission sector was designed. A scenario analysis using power plant energy to replace domestic consumption (electric power alternative) was conducted in the present study. The results showed that emissions from the power plant sector made a rather low contribution (less than 10%) to PM2.5 during the heavy polluted periods over the Beijing-Tianjin-Hebei area. The contribution of the power plant sector from regions other than the Beijing-Tianjin-Hebei area was greater than that from other cities over the Beijing-Tianjin-Hebei, which was greater than that from local sources. This was attributed to the power plant sector being an elevated source. Meanwhile, the sequence of contributions from both industrial and domestic sectors corresponding to regions showed the opposite trend. EESCR calculated for PM2.5 components and the major precursors showed that the EESCR value of the power plant sector was less than y=1/2x, and much lower than the other sectors. Thus, emission mitigation of sources other than power plants should be the key to improving air quality over the Beijing-Tianjin-Hebei area. The scenario analysis of electric power alternatives showed that it is a feasible way to reduce PM2.5 over the Beijing-Tianjin-Hebei area. Therefore, by taking full advantage of high stack emissions and the efficiency of centralized disposal in the power plant sector, while alleviating the emission increment caused by the growth of energy capacity, electric power alternatives should become one of the effective ways to improve the regional air quality.
KW - Beijing-Tianjin-Hebei area
KW - Electric power alternative
KW - PM contribution
KW - Power plant emissions
UR - https://www.scopus.com/pages/publications/85008472978
U2 - 10.13198/j.issn.1001-6929.2016.04.02
DO - 10.13198/j.issn.1001-6929.2016.04.02
M3 - 文章
AN - SCOPUS:85008472978
SN - 1001-6929
VL - 29
SP - 475
EP - 482
JO - Research of Environmental Sciences
JF - Research of Environmental Sciences
IS - 4
ER -
