The granular matter in the air pollution is one of the important indicators to decide that air quality in Taiwan is good or bad. Pingtung County’s Environment Protection Bureau do the project about tracing and self-criticism the air quality’s improving and retain. This project statistical and analyze the past 5 years’ data of air quality estimate from environment organization, and it shows that the concentration numeration of granular matter overstep the normal air quality in most time. This report also points out the concentration numeration of granular matter problem should be the first item to handle. Because of the dust on the road is one of the sources of granular air pollution when car passes. So the achievement of sweeping the dust on the road and reducing this pollution quantity has the direct influence. Due to this Pingtung county’s Environment Protection Bureau take the project of Strengthen streets’ dust sweeping work for important This year in order to promote the quality of the project, take the spirit of business by people then we choose the adviser companies in public to plan and control the sweeping work. Attend to the goal of sweeping and ask actual reducing efficiency to improve Pingtung County’s air quality.

dust,sweeping