Title: Evaluation of street sweeping and washing to reduce ambient PM10

Authors: Chih-Mei Chou, Yu-Min Chang, Wen-Yinn Lin, Chao-Heng Tseng, Luke Chen

Addresses: Graduate Institute of Environmental Planning and Management, National Taipei University of Technology, 106 Taipei, Taiwan. ' Graduate Institute of Environmental Planning and Management, National Taipei University of Technology, 106 Taipei, Taiwan. ' Graduate Institute of Environmental Planning and Management, National Taipei University of Technology, 106 Taipei, Taiwan. ' Graduate Institute of Environmental Planning and Management, National Taipei University of Technology, 106 Taipei, Taiwan. ' Water Resource and Environmental Engineering, Tamkang University, 251 Taipei, Taiwan

Abstract: This paper presents an evaluation of street sweeping and washing by PM10 measurements and determination of silt load from active traffic streets. A modified Regenerative-Air Vacuum Sweeper (RAVS) and a washer were used. It was found that the impact of sweeping alone on ambient PM10 concentrations was short-lived, lasting no more than about 2–3 h. The method of sweeping followed by washing tested in this work was found to offer a measurable reduction in PM10 re-suspension potentials from paved roads. Typically, the reduction efficiency is up to 24.4% of ambient PM10 concentration. Finally, correlated with ηs (based on silt load), a correlation is proposed to estimate the reduction efficiency, ηr (based on PM10), which is valid in appropriate conditions suggested by the work. It is feasible to predict the reduction efficiency of ambient PM10 controlled by the RAVS and washer used in this work.

Keywords: street sweeping; reduction efficiency; fugitive dust; PM10; street washing; silt load; road sweeping; environmental pollution.

DOI: 10.1504/IJEP.2007.016507

International Journal of Environment and Pollution, 2007 Vol.31 No.3/4, pp.431 - 448

Published online: 03 Jan 2008 *

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