A Study on the Compilation of Volatile Organic Compound Emission Inventory for the Dry Cleaning Industry in Beijing Based on Sampling Survey
Dry cleaning industry is a typical emission industry of volatile organic compounds(VOCs)from urban living sources.A sample survey of 360 laundries in Beijing was conducted to compile the VOCs emission inventory and evaluate the VOCs chemical reaction activity level of dry cleaning industry.The survey results showed that 87%of the cleaners were tetrachloroethylene dry washers,13%were petroleum solvent dry cleaners,and 70%dry washers were equipped with waste gas treatment devices,the average amount of dry cleaning solvent used by each dry cleaner in 2019 was 90 kg.It was calculated that the VOCs emission of dry cleaners in Beijing was 430.5 tons in 2019,with obvious spatial and temporal distribution characteristics.Among them,the emission of new urban districts was relatively large,with 57.4 tons from Chaoyang District.The emission intensity in the core district of the city was the highest,about 3 times that in Chaoyang District and dozens of times of outer suburbs.70%of the emissions were concentrated from November to April of the next year.Compared with other typical industries,the chemical activity of VOCs emission from dry cleaning industry was relatively low.In view of the fact that petroleum solvent dry cleaners contributed 81.9%and 99.4%of the ozone formation potential(OFP)and secondary organic aerosol(SOA)of the industry,Using tetrachloroethylene dry cleaning washers instead of petroleum solvent dry cleaning washers,and strengthening the installation and operation supervision of waste gas purification devices were considered to be the management of dry cleaning industry.
VOCsdry cleaningemissionstemporal and space distributionchemical reaction activity
万方数据
维普
