Study on Relationship between Dirty Rank and Silt Loading for Street Dust Management

• Main Authors: Bing-Hung Lai, 賴秉鴻
• Other Authors: Yu-Min Chang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/g47cw8

碩士 === 國立臺北科技大學 === 環境工程與管理研究所 === 96 === The paper studies on relationship between Dirty Rank and Silt Loading and find a value for every grade of street silt loading. In addition this study will also put forward relevant street dust management. The experimental method is based on residual traces of dust, residue mound and emission factor the three dust pollution in the road. The implementation of steps is to determine once per 500 meters, after the grading of street dust can be. There are 12 roads to be investigated, and each judgement for each road after dust sampling of work. After street dust sampling results, the A grade road’s street silt loading is 0.08~1.18 g/m2；the B grade road’s street silt loading is 1.36~2.44 g/m2；the C grade road’s street silt loading is 2.88~4.44 g/m2. After the street sweeper or washer vehicles simulation test, the street sweeper’s optimum operating sweeping parameters: speed limit is 2 km/hr, blower speed is 3,000 rpm and spray water volume is 0.2 L/min, brush angle is fixed at 45 degree.The average sweeping efficiency ηs is 75.1%. The street washer’s optimum operating sweeping parameters: speed limit is 15 km/hr, water volume is 650 L/min and spray water angle is 30 degree, the average sweeping efficiency ηs is 76.5% in street washing section. Finally, application of the results with control measures one can obtain the best sweeping and washing conditions.