摘要
采用气体模型Calpuff对苏州市某生活垃圾填埋场臭气扩散进行模拟,分析了以氨气为典型目标气体在不同季节和不同浓度的情况下扩散距离的变化情况。结果表明:氨气在夏季的扩散效应最明显,二级排放浓度和嗅觉阈值浓度的扩散距离最远可达到1.7 km与3.6 km;白天与夜间的扩散范围差异明显,白天扩散的距离明显大于夜间;氨气的扩散距离随着风速的增加逐渐增大,风速大于6 m/s时,风对氨气的扩散起到了稀释作用。
The Calpuff model was used to simulate odor dispersion of a domestic waste landfill site in Suzhou, and the diffusion distance variation of ammonia, as the typical gas, was analyzed under different seasons and different concentrations. The results showed that the diffusion effect of ammonia was the most obvious in summer, the diffusion distance under the secondary emission standard and odor threshold concentration could reach as far as 1.7 km and 3. 6 kin.The diffusion range had a sharp distinction between the day and night, with the significant greater in day time than that in the night. The diffusion distance of ammonia rose with the growth of air speed. Wind had a dilution effect towards the ammonia spread at the moment when the air speed reached 6 m/s.
出处
《环境卫生工程》
2014年第6期23-26,共4页
Environmental Sanitation Engineering
基金
苏州市科技支撑计划项目(SS201208)
