广东火电厂排放的大气污染物分布特征

DISTRIBUTION OF AIR POLLUTION EMISSION FROM THERMAL POWER PLANTS IN GUANGDONG PROVINCE

随着电力需求的急剧增长,火电厂排放的气态污染物成为大气污染的一个重要来源。本文估算了广东省2003年火电厂二氧化碳、多环芳烃和二恶英类的排放量,并引入经济、人口和区域面积进行空间分析。结果表明,广东省2003年火电厂共排放二氧化碳31 14.17万t,多环芳烃8 035.61 kg,二恶英11.46 g毒性当量;火电厂单位面积、人均、单位GDP二氧化碳排放量变化范围分别是0-2 102 t/km20、-3 417 kg/人和0-98 g/元;珠三角地区火电厂这三类大气污染物排放量占广东省排放总量的70%以上;珠三角火电厂单位GDP二氧化碳排放量低于全省平均水平。

With the increasing demands for electric power, air pollutant emission from thermal power plant became an important source of atmosphere pollution. As starting point of any policy to decrease the environmental burden by air pollution, estimation of pollutant emission from thermal power plants is essential. Based on statistics of energy combustion and corresponding emission factors and from literatures, annual CO2, PAHs and PCDD/Fs emissions in Guangdong thermal power plants in 2003 were estimated. Geographical distribution change of The CO2 emission was discussed. It was estimated that the total CO2, PAHs and PCDD/Fs emission in Guangdong thermal power plants were 31. 1417 Mt, 8035.61kg and 11.46 g TEQ respectively in 2003. The CO2 emission in Pearl River Delta account for above 70% of the total emission. However, CO2 emission per GDP in Pearl River Delta is lower than the average level of Guangdong Province.