Details

Autor(en) / Beteiligte

• Son, Youn-Suk
• Oh, Yong-Hwan
• Choi, In-Young
• Dinh, Trieu-Vuong
• Chung, Sang-Gwi
• Lee, Jai-hyo
• Park, Duckshin
• Kim, Jo-Chun

Titel

Development of a magnetic hybrid filter to reduce PM10 in a subway platform

Ist Teil von

• Journal of hazardous materials, 2019-04, Vol.368, p.197-203

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• •Magnetic hybrid filters were developed to reduce PM10 in a subway system.•Removal efficiencies of the MC filter were higher than that of the MM filter.•The removal efficiency decreased when the concentration of PM10 was increased.•Most of iron particulates can be removed using the MC filter system. This study investigated the reduction of particulate matter (PM) in a subway platform using self-developed magnetic hybrid filters (magnet-magnet (MM) and magnet-cascade (MC) filter). The magnetic hybrid filter systems were installed and operated in Jegi-dong subway station (J station) platform. The removal efficiency of PM10 (particular matter with aerodynamic diameter less than 10 μm) was evaluated according to various influencing factors such as the combination of filters, linear velocity, and operating conditions of trains. As a result, the average removal efficiency of the MC filter (40.5%) was higher than that of the MM one (27.0%). The maximum PM10 removal efficiencies by MM (34.1%) and MC (47.2%) filters were observed at 20 (linear velocity: 2.41 m/s) and 30 jog (8 m/s) dials, respectively. We additionally found that the removal efficiency of PM10 using MM and MC filters suddenly decreased when the concentration of background PM10 in the platform increased. Based on the results of this study, hybrid technology using two or more capture principles can remove PM more efficiently than technology using a single such principle.