Control Strategies for Stationary Source Emissions and Their Effects on Ambient Air Quality in Shanghai

Transcription

1 17 th IUAPPA World Clean Air Congress and 9 th CAA Better Air Quality Conference Control Strategies for Stationary Source Emissions and Their Effects on Ambient Air Quality in Shanghai Zhang Yihua, Liu Qizhen, Lin Yanfen, Duan Yusen, Fu Qingyan Shanghai Environmental Monitoring Center August Busan, S. Korea

2 Background

3 Shanghai an industrialized megacity Shanghai is the nation s thriving economic heart. It borders the East China Sea to the east and is next to Jiangsu Province and Zhejiang Province to the west. With just 0.06% of the nation s land area, it contributes 3.7% of China s GDP. Shanghai has a full category of industries, including steel manufacturing, petrochemical, fine chemical, ship building, automobile manufacturing, microelectronic industry, equipment manufacturing, etc. China Mainland Shanghai Year: 2014 Area: 6,340 km 2 Population: about 24 million GDP: 2356 billion

4 Control Strategies for Stationary Source Emissions

5 History of air pollution prevention in Shanghai After 2000: structure adjustment, Comprehensive control Before 2000:dust control, low sulfur, Modification of industrial spatial distribution 2010-now Black smoke elimination Waste gas treatment Smoke and dust control zone Management of industrial blocks Family gas installation Treatment of vehicle exhausts High efficiency dedusting Control of lowsulfur coal Family gas generaliztion Motor vehicle control Fugitive dust control zone Construction of non-coal zone Desulfuriztion and dedusting Comprehensive control of industrial zones Motor vehicle control Denitration Control of VOC emission Control of fugitive emissions Regional cooperation in Yangtze River Delta Alarm of severe air pollution

6 Shanghai Three-Year Environmental Action Plan 1 st round ( ) 2 nd round ( ) 3 rd round ( ) 4 th round ( ) 5 th round ( ) Clean energy replacement Soot pollution control Comprehensive rehabilitation of Wusong Industrial Park FGD in power plants Dust and soot pollution control Complete FGD projects in all coal-fired generation units Close down all small coal-fired units Frame NOx control scenario in power plants and initiate demonstration projects Continuous emission control of power plants (denitration and high-efficiency dedusting) Air pollution control of furnaces Pollution control of petrochemical industry Visible pollution control Infrastructure construction Improvement of management mechanism Control of total emission quantity Complex pollution control

7 Shanghai Clean Air Action Plan ( ) Targets: Till 2017, the quantity of heavily and severely polluted days in a year shall be dramatically reduced, air quality be significantly improved and annual average concentration of PM 2.5 be reduced by around 20% than that in Energy Industry Transportation Construction Agriculture Social Life Energy Mix Optimization and Pollution Control on Coal-fired Sources Industrial Structure Adjustment and Industrial Pollution Control Green Transportation Development and Pollution Control on Vehicles and Vessels Construction Industry Management and Pollution Prevention and Control Capacity Improvement Agricultural Pollution Prevention and Control with Reduced Non-Point Source Emission Pollution Control on Social Life Sources with VOCs Pollution Controlled

8 Shanghai Clean Air Action Plan ( ) Energy Mix Optimization and Pollution Control on Coal-fired Sources energy structure adjustment: negative growth of coal consumption till 2017; more imported natural gas and power; development of renewable energy; clean energy replacement in boilers and furnaces: about 2500 boilers and 300 furnaces fuelled with coal or heavy oil shall be replaced with clean energy or shut down. upgrade pollution control on coal-fired and gas-fired facilities: all the existing coal-fired facilities shall complete their FGD, denitrification, dedusting projects and upgrading renovation as well. Industrial Structure Adjustment and Industrial Pollution Control optimize spatial distribution tighten market access mechanism relating to environmental protection and energy conservation enhance industrial restructuring: Till 2017, the accumulated amount of industrial structure adjustment shall reach around VOCs control in industries: collection and cleansing of VOCs in steel and petrochemical companies, shipbuilding base and auto manufacturers, LDAR in key enterprises, control of total emission quantity, local emission standards, pollution charge, subsidy policy other industrial pollution emission reduction: Storage yards on raw materials and wastes in power plants and iron and steel industry shall be rectified. clean production and ecological industry development

9 Effects on Ambient Air Quality

10 Air Quality Improvement (1) Secondary Standard Primary Standard Desulfurization: FGD projects

11 Air Quality Improvement (2) TSP standard PM 10 standard * The statistics of industrial dust emissions include inorganized emissions in 2014.

12 Challenges of Secondary Pollutants In 2015, the annual average of PM 2.5 was 53 ug/m 3, exceeding the national standard by about 50%. The attainment rate of ozone 8h moving averages keeps decreasing during the last decade. It is still a long way to reach attainment of the National Ambient Air Quality Standards.

13 Summary

14 Summary Since 1980s, efforts were made to control stationary source emissions in Shanghai, including end treatment in power plants, clean energy replacement for boilers and furnaces, and industrial structure adjustment. With the continuous air pollution control and prevention, the air quality has been steadily improved, especially for sulfur dioxide (SO 2 ) and coarse particle. However, the air quality is still not satisfactory, compared to the National Ambient Air Quality Standards. Considering the characteristics of the air quality, NOx and VOCs are two key factors to the further improvement of air quality in the future. Therefore, we have drawn up more control measures to reduce NOx and VOCs emissions in the 13 th five-year air pollution prevention and control plan.

15 THANK YOU Zhang Yihua