Based on the air pollutant emission inventory of Jinan in 2020, the VOCs emission status and existing problems of typical industries including the chemical industry, industrial coating, printing, and furniture manufacturing were investigated and analyzed, and two emission reduction scenarios were designed to estimate the emission reduction potential according to the enterprise scales and the end-of-pipe treatment techniques. The results showed that the VOCs emissions of the typical industries from large to small were the chemical industry(7947.92 t), industrial coating(2383.29 t), printing(792.87 t), and furniture manufacturing(143.79 t). The chemical industry and industrial painting were dominated by large enterprises, accounting for 46.45% and 50.89% of VOCs emissions, whereas printing and furniture manufacturing were dominated by medium-sized enterprises, accounting for 51.76% and 42.37% of VOCs emissions, respectively. The end-of-pipe treatment was dominated by a single inefficient treatment technique, and the utilization rate of efficient treatment techniques such as combustion techniques and combination techniques was only 7.46%. The on-site investigation reported some problems in some enterprises, including incomplete source substitution, inadequate management of fugitive emissions, and unsuitable end-of-pipe treatment facilities. Therefore, VOCs emissions of typical industries had a certain reduction potential. Under the two designed emission reduction scenarios, the chemical industry had the greatest emission reduction potential, with emission reduction rates of 69.58%-84.99%, and the emission reduction rates of industrial coating, printing, and furniture manufacturing industries were 26.98%-34.74%, 36.96%-59.74%, and 8.55%-40.45%, respectively. Among the four industries, large and medium-sized enterprises had greater emission reduction potential, with average emission reduction rates of 70.00% and 44.23%, respectively. Under the scenario of a higher emission reduction target, the average emission reduction rates of small and micro enterprises were greatly increased, reaching 87.49% and 79.65%, respectively. The results of this study could provide scientific basis for developing VOCs governance in typical industries and enterprises.
Keywords: VOCs emissions; emission reduction measures; emission reduction potential; end-of-pipe treatment techniques; enterprise size.