In order to improve the pollution of car raises dust effectively, and extend all previous years’ administration policy, the Bureau of Environmental Protection yunlin carries out “The project of enhancing street dust sweeping and washing the street privately owned and privately operated for 98 year ”. The project started on August 13, 2009 and ended on August 12, 2010, lasting for a year. The achievements of this project’s work goal are as shown in Table 1; each work is completed smoothly. The work achievements’ abstract is as follows. 1.So far, 15,846.9 km of street washing is executed, The total rates are 105.6 %;6,731.6 km of the chuo-shuei River along street washing is executed, The total rates are 102 %. As for the street sweeping, the length of street are 11,926.5 km. The total rates are 108 %. 2.So far the total length of street washing is 22,578.5 km and total usage amount of water is 21,556.4 ton. That is 0.93~1.17 ton/km per month, so the average usage amount is 0.97 ton/km. It exceeds the criterion of agreement. 3.So far total dust collection amount of street sweeping work reaches 170.74 ton. That is 6.07~19.44 kg/km per month and the average dust collection amount is 13.99 kg/km. It is estimated that dust removal amount of street washing is 339.6 ton and 30.6 ton of street sweeping; total removal amount reaches 540.9 ton. It shows that this plan can eliminate road surface’ cumulated dust effectively, furthermore, the dust pollution of automobiles can be controlled. 4.Now the total length of street washing is 22,578.5 km; the reduction amount of TSP is estimated to be 311.58 ton. And the amount is 164.59 ton as the result of 11,926.5 km’s street sweeping. So the total amount reaches 476.17 ton because of street washing and sweeping project.

Washing street, Sweeping street, dust collection