深圳市龙华区PM2.5污染与减排过程模拟分析

通过分析深圳市龙华区2018年大气环境承载力发现,NO2和PM10的实际大气环境承载量已经降到了理想大气环境容量范围内,而PM2.5的实际大气环境承载量则已超过理想大气环境容量近1 000 t,说明PM2.5仍是龙华区大气污染防治的重点工作,利用科学手段精准、有效地指导PM2.5减排工作十分重要.基于相关监测数据,结合...

Simulation of PM2.5 Pollution and Emission Reduction Processes in Longhua District of Shenzhen City

According to the analysis of the atmospheric environmental bearing capacity of Longhua District in Shenzhen City in 2018,it was found that the actual atmospheric environmental carrying capacity of NO2 and PM10 had been reduced to the range of ideal ones.On the contrary,the actual atmospheric environmental carrying capacity of PM2.5 exceeded its ideal atmospheric environmental capacity by nearly 1000 tons,indicating that it would be essential to take advantages of scientific means to guide the emission reduction of PM2.5 accurately.Based on the monitoring data and WRF-Chem atmospheric chemistry model,this paper analyzes the typical cases of PM2.5 pollution processes and models the strategies of emission reductions.To control the concentration of PM2.5 and satisfy the standards,Longhua District is required to adopt the emission reduction strategies to cut down 30%and 70%~75%of the emissions during the relatively clean days and polluted days,respectively.In addition,it is more efficient to take emission reduction measures when the concentration of PM2.5 is high.The analysis of PM2.5 pollution processes indicates that pollutants at perimeter zones is transported to Longhua District because of the wind and temperature.Therefore,the support of other zones will contribute to improving the air quality of Longhua District.