Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
China Classification Society Industrial CORP, Tianjin, 300457, China.
Environ Sci Pollut Res Int. 2022 Jan;29(5):6688-6697. doi: 10.1007/s11356-021-16218-x. Epub 2021 Aug 30.
The establishment of a non-road construction machinery emission inventory forms the basis for the analysis of pollutant emission characteristics and for the formulation of control policy. We analyzed and investigated data on populations, emission factors, and activity levels for the construction machinery in Tianjin to estimate an emission inventory. Finally, a variety of emission reduction scenarios were used to simulate emission reductions and propose the most effective control policy. The results show that total emissions of CO, HC, NOx, PM, and PM from non-road construction machinery in Tianjin of 2018 reached 4180.78, 951.44, 5833.85, 383.92, and 365.70 t, respectively. Forklifts, excavators, and loaders were the three most important emission sources in Tianjin. There are clear differences in the emissions of different districts. Large machinery emissions were mainly distributed across the Binhai New Area, which includes high volumes of port machinery and tractors in Tianjin Port. Based on various emission reduction scenarios, the effect of emission reductions is estimated. The IAD affected the reduction of CO and HC emissions with RR values of 17.6% and 17.3%, respectively, while EMO affected the mitigation of PM and PM emissions and RR values by 18.0% and 18.4%, respectively. The emission reduction control policy for non-road construction machinery is proposed, including the accelerated updating of non-road machinery emission standards; integrating diesel engine research and development institutions to accelerate the development of vehicle after-treatment technology; and establishing a cooperation mechanism for scientific research institutes, government departments, and enterprises in the control of non-road mobile machinery emissions.
建立非道路施工机械排放清单是分析污染物排放特征和制定控制政策的基础。我们分析和调查了天津市施工机械的人口、排放因子和活动水平数据，以估算排放清单。最后，使用各种减排情景来模拟减排并提出最有效的控制政策。结果表明，2018 年天津市非道路施工机械的 CO、HC、NOx、PM 和 PM 总排放量分别达到 4180.78、951.44、5833.85、383.92 和 365.70 t。叉车、挖掘机和装载机是天津市三个最重要的排放源。不同地区的排放存在明显差异。大型机械排放主要分布在滨海新区，其中包括天津港大量的港口机械和拖拉机。基于各种减排情景，估算了减排效果。IAD 对 CO 和 HC 排放的减排影响分别为 17.6%和 17.3%，而 EMO 对 PM 和 PM 排放的缓解作用分别为 18.0%和 18.4%。提出了非道路施工机械的减排控制政策，包括加快非道路机械排放标准的更新；整合柴油机研发机构，加快车辆后处理技术的发展；建立科研机构、政府部门和企业在非道路移动机械排放控制方面的合作机制。
