研究报告
焦小淼,任世华,张伟,刘潇.超低排放改造推广及NH3减排对京津冀冬季环境效益研究[J].环境科学学报,2022,42(5):444-453
超低排放改造推广及NH3减排对京津冀冬季环境效益研究
- The promotion of ultra-low emission (ULE) transformation and NH3 emission reduction on the environmental benefits of Beijing-Tianjin-Hebei in winter
- 基金项目:中国工程院咨询研究项目(No.2021-XY-25)
- 焦小淼
- 煤炭科学研究总院有限公司 科技支持中心,北京 100013;北京低碳清洁能源研究院,北京 102211;北京大学物理学院大气与海洋科学系,北京 100871
- 任世华
- 煤炭科学研究总院有限公司 科技支持中心,北京 100013
- 摘要:为量化京津冀(BTH)地区超低排放(ULE)改造推广应用潜在的环境效益,基于GEOS-Chem大气化学模型,设计了2个全国情景和6个区域情景,从区域大气输送、超低排放改造在燃煤电厂(CPPs)、工业燃煤(ICB)推广及控制NH3排放等方面进行研究.结果表明:①全国燃煤电厂完成ULE改造,使得京津冀地区2015年1月PM2.5浓度下降3.2%(2.4 μg·m-3),如只是京津冀地区燃煤电厂完成ULE改造,可使京津冀地区PM2.5浓度降低1.1%(0.8 μg·m-3),可知区域联防联控对雾霾的治理具有重要意义;②在京津冀地区燃煤电厂完成ULE改造的基础上,工业燃煤完成ULE改造、NH3排放减少30%和50%,可使得京津冀地区PM2.5浓度分别降低5.4%(3.5 μg·m-3)、4.7%(4.0 μg·m-3)和7.7%(5.7 μg·m-3),可知工业燃煤的ULE改造和NH3减排,均可显著降低PM2.5的浓度;③在京津冀地区燃煤电厂和工业燃煤都完成ULE改造的基础上,NH3排放分别减少30%和50%,可使得PM2.5浓度分别降低8.5%(6.3 μg·m-3)和11.2%(8.3 μg·m-3),可知工业燃煤的ULE改造降低常规污染物或NH3 减排控制均能显著降低PM2.5浓度,为更好地降低京津冀地区PM2.5的浓度应综合考虑工业燃煤的ULE改造、NH3减排及区域联防联控,可通过经济代价和环境效益分析确定最佳的雾霾治理方案.
- Abstract:To quantify the potential environmental benefits of the promotion and application of ultra-low emission (ULE) transformation in the Beijing-Tianjin-Hebei (BTH) region, 2 national scenarios and 6 regional scenarios are designed by considering regional atmospheric transport, ULE transformation in coal-fired power plants (CPPs), the promotion of industry coal burning (ICB) boilers and the control of NH3 emissions, based on the GEOS-Chem atmospheric chemistry model. The results showed that: ①The ULE of CPPs in China can reduce PM2.5 concentrations by 3.2% (2.4 μg·m-3) in BHT region during the January of 2015. The ULE of CPPs only in the BTH region can reduce the PM2.5 concentration by 1.1% (0.8 μg·m-3), which means that regional transportation is of great significance to the control of haze; ②Based on the ULE of CPPs in BTH region, The extra ULE of ICB and NH3 emission reduction by 30% and 50%, which can reduce the PM2.5 concentrations by 5.4% (3.5 μg·m-3), 4.7% (4.0 μg·m-3) and 7.7%(5.7 μg·m-3), respectively. It can be seen that the ULE of ICB and NH3 emission reduction can significantly reduce the concentrations of PM2.5; ③The NH3 emissions reduced by 30% and 50% based on the ULE of CPPs and ICB in BTH region, which can reduce the PM2.5 concentrations by 8.5% (6.3 μg·m-3) and 11.2% (8.3 μg·m-3), respectively. It can be seen that the ULE transformation to reduce conventional pollutants or NH3 emission reduction control can significantly reduce PM2.5 concentrations. To better reduce the concentrations of PM2.5 in BTH region, comprehensive consideration should be given to the ULE of ICB, NH3 emission reduction, and regional joint prevention. Meanwhile a better haze treatment plan can be determined through combining economic cost and environmental benefit analysis.