| Summary: | 碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 105 === The objective of this study was to improve the street sweeper operates on the paved road, the blower exhaust discharge particulate matter into the operating environment and the impact of secondary pollution of suspended particles. For the reason that this study would install prevention devices ― spray nozzles into the street sweeper, in order to control the suspended particles in the garbage tank. During the implementation of the sweeping operation, the road sweeps were carried out in different level road and different spraying water, and the road dust was collected and analyzed. At the same time, analyzed and continuously monitored the emission of particulate matter from blower exhaust and the environmental particulate matter concentration change by the TOPAS (Airborne Particle Monitors). Finally, the reduction rate and the reduction amount of each particulate matter concentration (TSP, PM10, PM2.5) near the exhaust port of the blower were analyzed to understand the best control effect.
The results of this study demonstrate that street sweeper operates at different level road, the removal efficiency for the total road dust will not open spray nozzles, and change the results in the absence of spray nozzles. And, the results of TOPAS monitoring show that ambient and blower exhaust at the particulate matter concentration are instantaneous rise, which TSP and PM10 most obvious. In addition to the street sweeper in different spraying water, from the blower exhaust discharge at the particulate matter concentration diagram shows, TSP and PM10 are significantly decreased. Therefore, this phenomenon indirectly reflects the calculated reduction rate and reduction. In the three spray nozzles, blower exhaust TSP about 58.69% reduction rate, PM10 about 38.03% reduction rate, then PM2.5 no significant reduction rate.
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