【摘要】 根据1997年到2000年兰州市大气中TSP,SO2和NO的监测浓度,分析了大气污染的特征.兰州市主体处于黄河河谷盆地,由于静风和逆温频率高,大气的稳定度较高,是大气污染的基础原因.根据污染物的年排放量,用等标污染负荷法确定了主要污染源和污染物.分析了各种治理方案的环境效应,并根据天然气利用规划,用"箱"模式对兰州市的大气质量进行预测.更多还原

【Abstract】 According to the monitored concentration of TSP, NO and SO 2 in the air in Lanzhou City from 1997 to 2000, the regularities of air pollution are analyzed. Because the city lies in the basin of Yellow River valley, static wind and high frequency of temperature inversion make the air more stable, which is the basic reason for air pollution. On the basis of annual pollution discharge, the main pollution sources and pollutants are determined. The environmental benefits of various pollution controlling measures are analyzed, and the air quality of the city is predicted by means of "box" model based on the plan of making use of natural gas in Lanzhou.更多还原