This paper describes designing, manufacturing, and evaluating an eco-friendly modular-type air purification system to enhance the removal efficiency of fine particulate matter (PM) in urban public spaces, especially in hotspots. This system consists of artificial soil based-vegetation and electrostatic precipitator (ESP) filters. Unlike the so-called passive removal method, which adsorbs fine PM only by the leaves of plants, the vegetation soil filter based on multi-layered different artificial soils adopts an active removal method in which air purification is performed in the soil itself, bypassing external air by using the air circulation fan in the soil. The ESP filter is designed and evaluated to have a high fine PM removal efficiency, even at high suction velocity, to remove large amounts of outdoor fine PM. Throughout the experimental measurements on the hybrid air purification system with vegetation soil and ESP filters, it is observed that the vegetation soil filter has a 78.5% reduction efficiency for PM2.5 and a 47% for PM10 at the inlet air velocity of 0.15 m/s. The ESP filter also has a 73.1% reduction efficiency for PM2.5 and 87.3% for PM10 at an inlet air velocity of 3 m/s. Based on the performance evaluations of the vegetation soil filter and the ESP filter, it is noted that each individual module will be applied to an air purification tower with vertical expansion and installed in a high concentration area of fine PM in a downtown area to contribute to the fine PM reduction in the community.

中文翻译：

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带植被土壤和静电除尘器过滤器的混合空气净化系统的性能评估

本文描述了设计、制造和评估一种环保的模块化空气净化系统，以提高城市公共空间，尤其是热点地区细颗粒物 (PM) 的去除效率。该系统由人工土壤植被和静电除尘器 (ESP) 过滤器组成。与所谓的被动去除法仅通过植物的叶子吸附细颗粒物不同，基于多层不同人工土壤的植被土壤过滤器采用主动去除法，在土壤本身进行空气净化，绕过外部通过在土壤中使用空气循环风扇来空气。ESP 过滤器的设计和评估具有很高的细颗粒物去除效率，即使在高吸入速度下，也能去除大量室外细颗粒物。通过对带有植被土壤和 ESP 过滤器的混合空气净化系统的实验测量，观察到植被土壤过滤器对 PM2.5 的降低效率为 78.5%，对 PM10 的降低效率为 47%，入口空气速度为 0.15 m/ s。在入口空气速度为 3 m/s 时，ESP 过滤器对 PM2.5 的降低效率为 73.1%，对 PM10 的降低效率为 87.3%。根据植被土壤过滤器和 ESP 过滤器的性能评估，注意到每个单独的模块将应用于垂直扩展的空气净化塔，并安装在市区细颗粒物的高浓度区域，以促进减少社区中的细颗粒物。在入口空气速度为 0.15 m/s 时，PM2.5 的降低效率为 5%，PM10 的降低效率为 47%。在入口空气速度为 3 m/s 时，ESP 过滤器对 PM2.5 的降低效率为 73.1%，对 PM10 的降低效率为 87.3%。根据植被土壤过滤器和 ESP 过滤器的性能评估，注意到每个单独的模块将应用于垂直扩展的空气净化塔，并安装在市区细颗粒物的高浓度区域，以促进减少社区中的细颗粒物。在入口空气速度为 0.15 m/s 时，PM2.5 的降低效率为 5%，PM10 的降低效率为 47%。在入口空气速度为 3 m/s 时，ESP 过滤器对 PM2.5 的降低效率为 73.1%，对 PM10 的降低效率为 87.3%。根据植被土壤过滤器和 ESP 过滤器的性能评估，注意到每个单独的模块将应用于垂直扩展的空气净化塔，并安装在市区细颗粒物的高浓度区域，以促进社区中细颗粒物的减少。