基于臭氧形成敏感性和排放源贡献的城市聚合区臭氧污染控制策略的研究
Jiaqi Tian1, Ju Wang2, Dali Wang3
1College of New Energy and Environment, Jilin University, Changchun, 130012, China; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
Environmental pollution (Barking, Essex : 1987)
|October 24, 2024
概括
控制中国的臭氧 (O3) 污染需要针对主要排放源. 协调减少氧化 (NOx) 和挥发性有机化合物 (VOC),以及工业时间调整,对于改善空气质量至关重要.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 控制空气污染控制空气污染
背景情况:
- 尽管有排放控制措施,但中国的臭氧 (O3) 度仍在增加,原因是臭氧作为二次污染物的复杂形成.
- 城市和部门的交叉排放来源对区域O3水平做出了重大贡献,需要有针对性的干预.
- 中央平原城市聚集区 (CPUA) 面临着严重的O3污染挑战.
研究的目的:
- 量化城市和部门交叉排放源对CPUA中的O3度的贡献.
- 确定需要优先控制措施的特定人为排放源.
- 通过敏感性测试来确定氧化 (NOx) 和挥发性有机化合物 (VOC) 排放的最佳减排比率.
主要方法:
- 城市和部门交叉排放源对O3水平的贡献量化.
- 臭氧敏感性测试,以评估NOx和VOC排放减排比率的影响.
- 针对性控制措施和工业排放时间调整对MDA8 O3度的影响分析.
主要成果:
- 35个主要城市和部门交叉排放来源占区域O3度的80%.
- 总NOx排放量减少10%需要至少减少18%的VOC排放量,以实现广泛的O3减排.
- 协调的NOx和VOC减少使MDA8 O3降低了0.14%-4.78%;加强的控制使其降低了0.78%-7.09%;工业时间调整使其降低了1.10%-12.62%.
结论:
- 协调减少前体排放 (NOx和VOC) 是缓解O3污染的有效策略.
- 对于贡献最大的城市和行业来说,优先考虑控制措施至关重要.
- 优化工业部门的生产和排放时间为降低O3水平提供了显著的潜力.
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