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Assessing indoor air quality inside underground metro stations. A Case study of Delhi Metro

机译：评估地铁地铁站内的室内空气质量。 德里地铁案例研究

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Indoor air pollution is the one of the major health concern in the enclosed areas like underground metro stations which is used by large number of people in big cities. According to the World Health Organization (WHO) survey of 1600 world cities, the air quality in Delhi, the capital of India, was the worst of any major cities in the world. The level of pollutants goes beyond the hazardous level in the winter season during December, January and February months in National Capital Region. These elevated levels of pollutants thereby affect the Indoor Air Quality (IAQ) inside the underground metro stations. Delhi Metro undertook a study to assess the level of major pollutants like PM_(2.5), PM_(10), CO, O_3, CO_2 inside the underground metro stations with respect to outside polluted environment and to find out some measures, which can be adopted to lower the level of pollutants inside the underground stations. The underground metro stations having different arrangements like full height Platform Screen Doors (PSD), half height PSD and no PSD are chosen for this study. The concentration of above mentioned pollutants are compared between these stations. It is seen that full height PSD reduces the level of PMs inside the station and the Trackway-Exhaust System is also quite effective in reducing the PMs at the station during the open mode of operation of Environment Control System.
机译：室内空气污染是封闭区域的主要健康问题之一，如地下地铁站，这些地铁站被大城市的大量人员使用。根据世界卫生组织（世卫组织）对1600个世界城市的调查，印度首都德里的空气质量是世界上任何主要城市最糟糕的。污染物的水平超出了冬季的危险水平，在冬季，1月，2月份在国家首都地区。这些升高的污染物水平影响了地下地铁站内的室内空气质量（IAQ）。德里地铁承担了一项研究，以评估PM_（2.5），PM_（10），CO，O_3，在地下地铁站内的PM_（10），CO，O_3，CO_3等主要污染物的水平，并在污染环境中找出一些可以采用的措施降低地下站内的污染物水平。为本研究选择具有不同安排的地铁地铁站，如全高平台屏幕门（PSD），半高度PSD和没有PSD。在这些站之间比较了上述污染物的浓度。可以看出，全高度PSD减少了站内的PMS水平，并且在环境控制系统的开放操作模式期间，轨道排气系统也非常有效地减少站的PMS。

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