Heo Jaeseok, Lee Jooyeon, Yoon Minyoung, Park Duckshin
Environment Research Institute, Ajou University, Suwon City 16499, Republic of Korea.
Department of Transportation Environmental Research, Korea Railroad Research Institute, Uiwang City 16105, Republic of Korea.
Toxics. 2023 Oct 30;11(11):891. doi: 10.3390/toxics11110891.
In urban areas, a major source of harmful particulate matter is generated by vehicles. In particular, bus stops, where people often stay for public transportation, generate high concentrations of particulate matter compared to the general atmosphere. In this study, a non-powered type brush filter that generates electrostatic force without using a separate power source was developed to manage the concentration of particulate matter exposed at bus stops, and the removal performance of particulate matter was evaluated. The dust collection performance of the non-motorized brush filter varied by material, with particle removal efficiencies of 82.1 ± 3.4, 76.1 ± 4.7, and 73.7 ± 4.5% for horse hair, nylon, and stainless steel, respectively. In conditions without the fan running to see the effect of airflow, the particle removal efficiency was relatively low at 58.2 ± 8.4, 53.6 ± 9.2, and 58.0 ± 7.3%. Then, to check the dust collection performance according to the density, the number of brushes was increased to densify the density, and the horse hair, nylon, and stainless steel brush filters showed a maximum dust collection performance of 89.6 ± 2.2, 88.3 ± 3.2, and 82.1 ± 3.8%, respectively. To determine the replacement cycle of the non-powered brush filter, the particulate removal performance was initially 88.0 ± 3.2% when five horse hair brushes were used. Over time, particulate matter tended to gradually decrease, but after a period of time, particulate matter tended to increase again. The purpose of this study is to evaluate the particulate matter removal performance using a brush filter that generates electrostatic force without a separate power source. This study's brush filter is expected to solve the maintenance problems caused by the purchase and frequent replacement of expensive HEPA filters that occur with existing abatement devices, and the ozone problems caused by abatement devices that use high voltages.
在城市地区，车辆是有害颗粒物的主要来源。特别是公交站点，人们常在此等候公共交通，与一般大气环境相比，公交站点会产生高浓度的颗粒物。在本研究中，开发了一种无需单独电源即可产生静电力的无动力型刷式过滤器，用于控制公交站点暴露的颗粒物浓度，并评估了颗粒物的去除性能。无动力刷式过滤器的集尘性能因材料而异，马毛、尼龙和不锈钢的颗粒去除效率分别为82.1±3.4%、76.1±4.7%和73.7±4.5%。在不运行风扇以观察气流影响的条件下，颗粒去除效率相对较低，分别为58.2±8.4%、53.6±9.2%和58.0±7.3%。然后，为了根据密度检查集尘性能，增加刷子数量以提高密度，马毛、尼龙和不锈钢刷式过滤器的最大集尘性能分别为89.6±2.2%、88.3±3.2%和82.1±3.8%。为了确定无动力刷式过滤器的更换周期，最初使用五把马毛刷时，颗粒物去除性能为88.0±3.2%。随着时间的推移，颗粒物含量往往会逐渐下降，但一段时间后，颗粒物含量又会趋于上升。本研究的目的是评估使用无需单独电源即可产生静电力的刷式过滤器的颗粒物去除性能。预计本研究中的刷式过滤器将解决现有减排设备因购买和频繁更换昂贵的高效空气过滤器而导致的维护问题，以及使用高电压的减排设备所引起的臭氧问题。
