Emission Inventory of Air Pollutants From Iron and Steel Industry in the Beijing-Tianjin-Hebei Region

 

   

In response to the situation of the unclear air pollutants emission of the steel industry in the Beijing-Tianjin-Hebei Region, and lacking of research on steel industry emission inventory, the  emission inventory research team under Appraisal Center for Environment and Engineering, MEP has developed an emission inventory of iron and steel industry in the Beijing-Tianjin-Hebei Region (BTH-Steel Version 1.0), which is routing-based, bottom-to-up, and high spatiotemporal resolution, based on the data of steel industry surveys, enterprise online emission monitoring and pollution source investigations, considering the concrete information of specific equipment, environmental protection measures, production capacities in the steel industry.

Taking 2012 as the base year, the research of BTH-Steel V1.0 covers Beijing and Tianjin, as well as all 11 cities in Hebei Province (i.e. Shijiazhuang, Tangshan, Handan, Xingtai, Hengshui, Cangzhou, Zhangjiakou, Chengde, Qinhuangdao, Langfang, and Baoding) and deals with main processes in steel industry, including coke oven, sintering, pelletizing, blast furnace, converter, electric furnace, steel rolling. The pollutants cover SO2, NOX, and smoke dust. The research data is mainly derived from steel industry surveys, online monitoring, pollution source investigations (environmental impact assessment and satellite remote sensing), of which online monitoring data comes from key pollution source online monitoring system by Bureau of Environmental Supervision, MEP; environmental impact assessment data is from steel projects approved by MEP over the years; satellite remote sensing data is from remote sensing program of major polluting industries in BTH Region; and large amount of statistical data from steel industry and Hebei provincial government is used in this research for reference. 

 

 

Prepared by: BO Xin, ZHAO Chunli, WU Tie, WANG Feilong, WANG Yan, et al

Reviewed by: LI Shibei, SU Yi

Emission Inventory of Air Pollutants From Thermal Power Plants in the Beijing-Tianjin-Hebei Region

 

   

There haven’t been any research on the explicit analysis of the air pollution of thermal power plants in the Beijing-Tianjin-Hebei region so far. The emission inventory research team under Appraisal Center for Environment and Engineering, MEP has established a comprehensive emission inventory of thermal power plants in the Beijing-Tianjin-Hebei region (BTH-Power Plant Version 1.0) on the basis of data generated during online monitoring, environmental impact assessment, and acceptance of thermal power plants. Taking 2011 as the base year, the research of BTH-Power Plant version 1.0 covers Beijing and Tianjin, as well as all 11 cities in Hebei Province (i.e. Shijiazhuang, Tangshan, Handan, Xingtai, Hengshui, Cangzhou, Zhangjiakou, Chengde, Qinhuangdao, Langfang, and Baoding)  The research data is mainly derived from online monitoring, environmental impact assessment, and acceptance, of which online monitoring data comes from online monitoring system by Bureau of Environmental Supervision, MEP for key pollution sources, while environmental impact assessment data and acceptance data are from thermal power projects approved by MEP over the years. Compared to existing ones, the thermal power emission inventory provided by this research has been substantially advanced:

 (1) It is the first time that thermal power emission inventory has been generated based on online monitoring data in China., which breaks through bottleneck caused by traditional emission factor method, and significantly promotes the temporal resolution of pollution source emission inventory.

(2) Emission data is completely based upon statistics from authoritative departments in Ministry of Environment Protection. The environmental impact assessment data, acceptance data and online monitoring data can be supplemented and compared with each other, which ensure data reliability.

(3) The acceptance data and online monitoring data are the existing status of emission data, which can effectively solve the problem that the eliminated thermal power units are included in the statistics in the traditional inventory. According to the calculation in BTH-Power Plant version 1.0, the locations of thermal power plants in BTH area are described in following figure.

 

Air Pollutants Emission Inventory of the Beijing Capital International Airport (BCIA)

 

    Based on aircraft types, flights, and aircraft taking off and landing and other data, we set up the air pollutants emission inventory of the BCIA for the first time. The inventory uses Aermod air quality model to simulate BCIA’s air pollutants contribution to relevant sensitive residential communities, and lays foundations for the generation of air pollutant emission inventory for airports across the country (as following figure).

 

 

Prepared by: BO Xin, DUAN Gang, ZHOU Xin LU Li, HAN Ruru et al.

Reviewed by: LI Shibei

WRF-CALPUFF Parallel Computing Coupled Model

 

   

Based on “Emission Inventory of Steel Industry in the Beijing-Tianjin-Hebei Region” and “Emission Inventory of Thermal Power Plants in the Beijing-Tianjin-Hebei Region”, and combined with high resolution satellite remote sensing technology, the WRF-CALPUFF parallel computing coupled model for Tangshan Prefecture is established.

The model performs quantitative assessment of the impact of steel, coking, cement, thermal power and other key industries on ambient air quality in 2013, and predicts the effect of emission reduction scheme on ambient air quality in Tangshan City, and facilitates the environment control, sustainable economic development, and industrial structure adjustment in this area.

 

Analysis of Remote Sensing Images of the BTH Region

 

Remote sensing interpretation and study on methods of locating the illegal constructions were performed for oil refineries and coal burning boilers. Remote sensing images of BTH area in 2014 were acquired. Through the general survey of refineries, steelworks, cement plants, thermal power plants in BTH area in 2014, we got coordinate information of major atmospheric point sources, unorganized stock yards and so forth, and we analyzed the stated of dismantled and shutdown steelworks, thermal power plants and cement plants. 

 

Basic Data and Data Pre-processing Tool for Pollution Emission Inventory Model

 

The development of the basic data and data pre-processing tool for pollution source inventory model is completed on the basis of 2012 national population data, national administrative divisions, and 30m high resolution land use data. It creates a spatial mapping file with arbitrary projection and resolution mesh (SMOKE surrogate file), and as a result, it fills a vacancy in uniform spatial mapping file in domestic research on emission inventory.