| 英文摘要 |
In this project, washing and sweeping works were total 22,167.5 km , estimated TSP, PM10 and PM2.5 reductions were approximately 305.9 tons , 57.6 tons and 13.5 tons . In addition, a total of 61 times maneuver support operations 748 km, the supports mainly clean up after typhoon,and regular support for Chushang and Chi-chi town.
SS measured values between 0~13.2 mg/L, and turbidity measured values between 3.3~22.4NTU, and dissolved oxygen measured values between 4.5~7.9 mg/L, in accordance with the street washing water quality objectives.
Washing and sweeping job removal for the TSP rate between 12.1 ~ 48.2%, and removal about 67.2~95.3% for street dust.After Washing and sweeping job road dirty rank can be improved to A-level grades. In addition, sweep first or wash first of TSP and street dust load reduction rate is similar, so we can change the washing and sweeping sequence for people's needs. The Improvement of measured values shows that the polution control been successful by Environmental Protection Bureau.
To survey soiled of rodad have been performed 1,507.1 km, of which A-level roads accounted for 89.8% of 1,353.1 km , 154 km of road grade B accounted for 10.2 %, no C -class roads ; road sources as Class B by 135 times the notification related projects compiled after month , and the remaining sections of the A -level pollution or no pollution.
This project checks 25 air quality purification areas, The best areas are Nantou city husbandry specialty , Wen Wu Temple of Sun Moon Lake , Bifeng community , Yuchi Village and Caotun Land Administration Office ; and carbon sinks findings total 5,942 trees in air quality purification areas, total carbon dioxide absorption total deposits of about 83.8 tonnes kg CO2.
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