【摘要】 为合理规划垃圾转运站的设计,改善室内外空气质量,保障工作人员和周边市民的身心健康,结合北京某生活垃圾转运站项目,选取典型污染物H₂S,基于Phoenics软件建立污染物扩散CFD模型,从微尺度研究正风向、背风向和侧风向3种典型风向对污染物扩散的影响。研究结果表明:正风向室内浓度场较稳定,但由于边角效应存在H₂S局部外逸现象;背风向风影区受负压影响,部分室内H₂S气体被带至室外,对室外影响较大;侧风向有明显的局部污染物停滞和侧穿堂现象;结合不同风向采取合理的室内外应对措施,有助于改善建筑单体和周边环境质量。本研究可以对城市垃圾转运站的规划、设计,以及污染物扩散的防控和环境治理提供科学参考。更多还原

【Abstract】 In order to rationally plan the design of waste transfer station, improve indoor and outdoor air quality, and ensure the physical and mental health of staff and surrounding citizens, typical pollutant H₂S was selected based on a waste transfer station project in Beijing, and the CFD model of pollutant diffusion is established based on Phoenics software. The influence of three typical wind directions, positive wind direction, leeward direction and cross wind direction on the diffusion of pollutants, is studied at a micro-scale. The study show that indoor concentration field is stable in positive wind direction, but the H₂S local escape phenomenon exists, due to the corner effect; the leeward wind shadow area is affected by negative pressure, and part of the indoor H₂S gas is taken outdoors, which has a greater impact on the outdoors; The wind direction has obvious local pollutant stagnation and side-passing phenomenon; taking reasonable indoor and outdoor countermeasures in combination with different wind directions will help improve the quality of the building and the surrounding environment. This study can provide a scientific reference for the planning and design of urban waste transfer stations, as well as the prevention and control of pollutant diffusion and environmental governance.更多还原