| 英文摘要 |
For the sake of reducing the air pollution which from the wind-borne dust of moving vehicles, the plan takes the project of Strengthen streets dust washing and sweeping work for important; besides, promoting the quality of the project and relative works. Moreover, this project can prevent the dust of roads be raise again. It is not only reducing the amount of wind-borne dust effectively, but also keeping roads and streets in the urban area. The final target is that improve air quality. The main work and fruitful results in the project are as following:
1. General investigation of roads
In 2011, 1,451 times and 2,182 kilometers of roads investigation had been carried out in this project, including 29 administrative areas. In 2012, 1,400 times and 2,190.35 kilometers of roads investigation had been carried out in this project, including 29 administrative areas. In 2013, 1,400 times and 2,203.93 kilometers of roads investigation had been carried out in this project, including 27 administrative areas.
As can be seen from the analysis of general investigation of roads in Kaohsiung, there was a upward trend in graded A. Similarity, graded C is belong to the extremely dirty degree. And the proportion of dust is also decreased gradually. It shows that the street washing operation is useful and helpful at improving serious dust problem. According to the result of statistical analysis, there is the highest proportion of distribution in graded B roads in Kaohsiung city. Furthermore, graded C roads are usually distributed over heavy traffic area, road construction area and construction area.
2. The task amount of street washing
In 2011, the task amount for street-washing had carried out 121,202.857 kilometers altogether. The amount of street washing operation is approximately 572 kilometers per day. In 2012, the task amount for street-washing had carried out 124,197.824 kilometers altogether including 29 administrative areas. The amount of street washing operation is approximately 483 kilometers per day. In 2013, the task amount for street-washing had carried out 122,961.758 kilometers altogether including 29 administrative areas. The amount of street washing operation is approximately 471 kilometers per day.
3. Supervision examination
Totally there had been finished 76 times autonomous examination in this project in 2011. In 2012, there had been done 106 times autonomous examination. In 2013, there had been finished 103 times autonomous examination. During the period of supervision examination, it did not happen any serious human negligence. Even though some personal mistakes, they were fixed and improved immediately. More precisely, supervisions correct various problems through on-site improvements.
4. Effects assessment
(1)The analysis of dust pollutant decrement
According to the 120 roads test results, it shows that street washing to make street dust removal efficiency of 77%. Naturally, this data is better than the EPA standard with above 70%. The 70% of dust removal efficiency in the grain of dust which smaller than 75μm. The evidence seems to indicate that partial air quality should have a obvious and considerable improvement.
(2) Roadside TPS
The result of TPS concentration detection points out that the roadside particulate pollutant concentration is average 15.9% lower than before the street washing.
(3) Particulate pollutant concentrations
In 2011, the decrement amount to TPS is 4,181.5 metric tons、787.82 metric tons for PM10 in this project. Turning to 2012, the decrement amount to TPS is 4,284.8 metric tons、807.3 metric tons for PM10. The decrement amount to TPS is 4,238.7 metric tons、789.6 metric tons for PM10 in 2013. It can be seen form that data, both TPS and PM10 decreased significantly utilizing the street washing plan. In other words, it can be improve air quality effectively.
5. Related guidance
The project accompany with related guidance since. According to contract provisions, the animated propaganda film about street washing is finished. This film play on several network platforms namely YAHOO﹑Google and Zen Mei Wang to carry out advocacy. In addition, it also provides broadcast advocacy with three types of edition including Chinese﹑Taiwanese and Hakka. And it is played on city bus. Throughout this period, press releases are simultaneous released on internet news websites. Besides the way of internet, press releases also are released on annual magazine interviews namely Common Health magazine﹑Scientific American and Global Views Monthly.
6. Public satisfaction survey
According to the result of questionnaires, the 92% of respondents agree the city air quality can be change utilizing the washing street plan. 96% of respondents have a positive attitude on street fugitive dust improvement plan. What is more, 96.9% of interviewees approve this project. Overall the most people are very satisfied.
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