Study on the Countermeasures of SO₂ Emission Reduction in Chengdu Economic Circle

Abstract:

Based on a detailed survey on the source and volume of SO₂ emission over Chengdu economic circle, the third-generation air quality model CMAQ is adopted for simulating the concentration of SO₂ in the air over Chengdu Economic Circle. The results show that the hourly average concentration, daily average concentration and annual average concentration of SO₂ in air exceed the limit of national standard, and the affected areas respectively account for 0.12%, 0.18% and 0.03% of the total area of the economic circle. Meanwhile, according to the result of calculation, the SO₂ emissions of thermal power plants, chemical industry, building materials plants and industrial area sources make the largest contribution to the SO₂ concentration in the air, with ratios of 36.15%, 18.67%, 11.81% and 8.34% respectively. thus,main measures to reduce emissions of SO₂ in Chengdu economic circle are proposed as follows: focusing on the control of the emissions of SO₂ from industrial enterprises, especially in the thermal power plants, chemical industry, building materials plants as well as industrial boilers; joint prevention and control measures should be implemented between the cities, so as to reduce the interaction caused dy emissions of SO₂. With the application of the above measures, the total SO₂ emissions can be reduced by 50% and the concentration of SO₂ in the air can meet with the Class II of national ambient air quality Standard.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 1388-1396
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.1388
• Online since: September 2013
• Authors: Wen Yong Wang, Bo Jun Ke, Gao Ping Fu
• Keywords: CMAQ Model, Economic Circle, Pollutants Emission Reduction, SO₂

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