| URN | etd-0701115-103206 | Statistics | This thesis had been viewed 394 times. Download 6 times. |
| Author | His Hsun Liang | ||
| Author's Email Address | danielliang8699@gmail.com | ||
| Department | Department of construction & spatial design | ||
| Year | 2014 | Semester | 2 |
| Degree | Master | Type of Document | Master's Thesis |
| Language | zh-TW.Big5 Chinese | Page Count | 126 |
| Title | Study on Suppressing Fugitive Dust Pollution from the Blower of Street Sweeper |
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| Abstract | County and city EPB perform of road sweeping mostly type is vacuum sweepers. Particulate matter of the dust chamber followed the vacuum airflow of blower to the atmosphere, and caused the air pollution of secondary particulate matter (TSP, PM10). This study tried to find low conversion costs, high inhibition efficiency of control equipments to reduce effectively of secondary particulate matter from street sweeper derived, as well as to ensure the health of people around the road. In this study, dust collecting chamber of street sweeper add dust-suppression equipment including stainless steel mesh, the impacting plate of particulate matter, and mist/sprinkler divices. Field tests were conducted to evaluate the reduction efficeiencies of secondary particulate matter. Results of this study can be concluded as follows: (1) Dust reduction efficiency for 8 types of expermental moduals were not significant difference. Control equipments do not affect the negative pressure of blower; (2) Street sweeper, equipped with mist/sprinkler device, impacting plate, and NO.40 stainless steel mesh, obtained the lowest particulate matter emission. Reducing efficiency of particulate matter was about 80%; (3) For the perimeter PM impact rate (£b), the street sweeper with mist/sprinkler, the impact plate, and NO.40 stainless steel mesh had the maximum value of £b. TSP and PM10 were about 57% and 65%, respectively; (4) In actual road sweeping tests, TSP and PM10 value were improved and the £b value was about 35%. Reducing efficiency of particulate matter was about 44% from blower. In the furture, it is recommend to investigate the effects of the pore size of stainless steel mesh and the sprinkler design including angle of nozzle, operation pressure, and flow rate. Experiments with different combinations can be conducted to find out the optimal operational conditions for removal of particulate matter. In addition, field test for longer period are suggest to validate the effects on suppressing fugitive dust pollution from the blower of street sweepe. |
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| Files | indicate access worldwide | ||
| Date of Defense | 2015-06-27 | Date of Submission | 2015-07-01 |