Least-cost control strategy optimization for air quality attainment of Beijing-Tianjin-Hebei region in China

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:245

Article

Xing, Jia^1,2  Zhang, Fenfen^1,2  Zhou, Yang^3,4  Wang, Shuxiao^1,2  Ding, Dian^1,2  Jang, Carey⁵  Zhu, Yun⁶  Hao, Jiming^1,2 

[1] Tsinghua Univ, State Key Joint Lab Environm Simulat & Pollut Con, Sch Environm, Beijing 100084, Peoples R China

[2] State Environm Protect Key Lab Sources & Control, Beijing 100084, Peoples R China

[3] Tianjin Acad Environm Sci, Tianjin 300191, Peoples R China

[4] Key Lab Tianjin Air Pollut Control, Tianjin 300191, Peoples R China

[5] US EPA, Res Triangle Pk, NC 27711 USA

[6] South China Univ Technol, Coll Environm Sci & Engn, Guangzhou Higher Educ Mega Ctr, Guangzhou, Guangdong, Peoples R China

关键词: Air pollution;    Control strategy;    Least-cost optimization;    Air quality attainment;    Ozone;    Fine particles;   

DOI  :  10.1016/j.jenvman.2019.05.022

来源: Elsevier

【 摘 要 】

Control strategies can be optimized to attain air quality standards at minimal cost through selecting optimal combinations of controls on various pollutants and regional sources. In this study, we developed a module for least-cost control strategy optimization based on a real-time prediction system of the responses of pollution concentrations to emissions changes and marginal cost curves of pollutant controls. Different from other method, in this study the relationship between pollution concentrations to and precursor emissions was derived from multiple air quality simulations in which the nonlinear interactions among different precursor emissions can be well addressed. Hypothetical control pathways were designed to attain certain air quality goals for particulate matter (PM2.5) and ozone (O-3) in the Beijing-Tianjin-Hebei region under the 2014 baseline emission level. Results suggest that reducing local primary PM emissions was the most cost-efficient method to attain the ambient PM2.5 standard, whereas for O-3 attainment, reducing regional emission sources of gaseous pollutants (i.e., SO2, NOx, and volatile organic compounds (VOCs)) exhibited greater effectiveness. NH3 controls may be cost-efficient in achieving strengthened PM2.5 targets; however, they might not help in reducing O-3. To achieve both PM2.5 (< 35 mu g m(-3)) and O-3 (daily 1-h maxima concentration < 100 ppb) targets in Beijing, the reduced rates in BTH regions of NOx, SO2, NH3, VOCs and primary PM are 75%, 75%, 5%, 55%, and 85%, respectively from the emission levels in the year of 2014. Local reduction is the most effective method of attaining moderate PM2.5 and O-3 targets; however, to achieve more aggressive air quality goals, the same level of reductions must be conducted across the whole Beijing-Tianjin-Hebei region.

【 授权许可】

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