A review of traditional and advanced technologies for the removal of particulate matter in subway systems

Jun Hyeong Park, Youn Suk Son, Ki-Hyun Kim

Research output: Contribution to journalReview article

3 Scopus citations

Abstract

The pollution status of particulate matter (PM) in a subway system and technological trends in their reduction were discussed in this study. The levels of PM 2.5 and PM 10 are generally found to be higher in the underground platforms and tunnels than those in the outdoor air. It has also been reported that the composition of fine dust in the subway consists of various substances including heavy metals (like Fe), carbonaceous matter, and solvent extractable organic matter (SEOM). It was confirmed that subway dust was created mainly by wearing on wheels, rails, and brakes. In addition, the concentration of PM in such environment was influenced not only by internal factors (eg, operating conditions of trains and ventilation systems, number of passengers, and the structure of subway stations) but also by outside factors (eg, ambient air concentration). Up to now, various techniques (ventilation fans, platform screen doors (PSDs), magnetic filters, small jet fans, artificial intelligent ventilation systems, hybrid filters, etc) have been studied to reduce PM in underground subway systems. In this study, we reviewed the air quality of major subway stations with the focus on PM and relevant technologies for its reduction.

Original languageEnglish
Pages (from-to)177-191
Number of pages15
JournalIndoor Air
Volume29
Issue number2
DOIs
StatePublished - 2019 Mar 1

Keywords

  • PM
  • PM
  • energy saving
  • particulate matter
  • platform screen doors
  • subway system

Fingerprint Dive into the research topics of 'A review of traditional and advanced technologies for the removal of particulate matter in subway systems'. Together they form a unique fingerprint.

  • Cite this