| 2030年京津冀及周边城市群PM2.5污染控制路径 |
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| 引用本文： | 束韫,李海生,张文杰,王洪昌,田刚,朱金伟,于瑞,杨添棋,龙红艳.2030年京津冀及周边城市群PM2.5污染控制路径[J].环境科学研究,2023,36(3):439-448. |
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| 作者姓名： | 束韫 李海生 张文杰 王洪昌 田刚 朱金伟 于瑞 杨添棋 龙红艳 |
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| 作者单位： | 中国环境科学研究院，环境基准与风险评估国家重点实验室，北京 100012 |
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| 基金项目： | 国家重点研发计划项目(No.2017YFC0213000)；大气重污染成因与治理攻关项目(No.DQGG0107, DQGG0209) |
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| 摘 要： | 近年来，我国大气污染物减排效果明显，空气质量也随之大幅改善. 然而，部分重点区域如京津冀及周边城市群(“2+26”城市)PM2.5年均浓度依然较高，远超GB 3095—2012《环境空气质量标准》二级标准限值(35 μg/m3). 为实现该目标值，利用京津冀温室气体-空气污染物协同控制综合评估模型(greenhouse gas-air pollution interactions and synergies， GAINS-JJJ)，模拟预测了2030年不同政策情景下区域空气质量改善情况，分别量化了结构调整与末端控制(BAT)政策对不同污染物减排的贡献，为“2+26”城市制定空气质量改善路径提供参考. 结果表明:①2017—2030年，由于一系列结构调整政策，如煤改清洁能源、淘汰落后产能(如钢铁、水泥、焦化等)、氮肥减量施用和高挥发有机溶剂替代等措施的实施，以及末端控制政策，如钢铁、水泥与焦化等行业超低排放改造，重型柴油车与非道路移动机械尾气排放标准升级，标准化规模养殖与测土配方施肥技术等技术的推广，“2+26”城市的PM2.5年均浓度值达到34 μg/m3，实现了“美丽中国”的目标要求. ②2030年结构调整情景下，一次PM2.5、SO2、NOx、NH3与NMVOCs(非甲烷类挥发性有机物)的排放相比2017年分别下降了31%、44%、31%、5%和11%；结构调整+末端控制情景下，各项污染物的排放量减排比例分别达到75%、69%、77%、32%与52%. ③末端控制政策对一次PM2.5、NOx、NH3和NMVOCs减排的贡献要大于结构调整政策的贡献；而针对SO2的减排，结构调整政策则发挥了较大的作用. 研究显示，在2030年之前，“2+26”城市的末端控制政策仍具有较大的污染减排潜力，而针对SO2的控制则应将重点从过去的末端减排转向前端的结构性调整措施上.
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| 关 键 词： | 细颗粒物(PM2.5)污染 “2+26”城市 情景分析 减排潜力 模拟分析 |
| 收稿时间： | 2022-08-20 |
PM2.5 Pollution Control Pathways in Beijing-Tianjin-Hebei and Surrounding Urban Areas in 2030 |
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| Affiliation: | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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| Abstract: | In recent years, air pollutant emissions in China have reduced significantly, and the air quality has improved. However, annual average PM2.5 concentrations in some key regions such as the ‘2+26’ Cities in Beijing-Tianjin-Hebei and surrounding areas are still relatively high, far exceeding the national standard Ⅱ for ambient air quality of 35 μg/m3. To attain the target, the greenhouse gas and air pollution interactions and synergies model adapted to the ‘2+26’ Cities (GAINS-JJJ) model was applied to simulate and predict regional air quality under different policy scenarios in 2030, and contributions of structural adjustments and end-of-pipe controls (BAT) policies to the emission reduction. The results showed that: (1) Due to the structural adjustment policies, such as ‘coal to clean energy’, elimination of outdated production capacity (such as steel, cement, coking, etc.), reduction of nitrogen fertilizer application and substitution of high volatile organic solvents, and the end-of-pipe control policies, such as ultra-low emission standard transformation of steel, cement and coking industries, strengthened emission standards of heavy diesel vehicles and non-road machinery, and promotion of standardized large-scale breeding, soil testing technologies, the average annual concentration of PM2.5 in the ‘2+26’ Cities will reach 34 μg/m3, achieving the goal of ‘beautiful China’. (2) Due to structural adjustment, the emissions of PM2.5, SO2, NOx, NH3 and NMVOCs in 2030 will be reduced by 31%, 44%, 31%, 5% and 11%, respectively, compared with 2017, and they will be further reduced by 75%, 69%, 77%, 32% and 52%, respectively, due to end-of-pipe controls. (3) The contribution of the end-of-pipe controls to the emission reductions of primary PM2.5, NOx, NH3 and NMVOCs is greater than that of the structural adjustments. For SO2 emission reduction, structural adjustments has played a greater role. Research demonstrated that the control of SO2 before 2030 should shift the focus from the end-of-pipe measures to the structural adjustment measures. |
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