The Yunlin County government news reference 2013.10.17
Yunlin County air quality defect rate dropped from 5.2% in 1994 to 0.8% in 2012; The thin suspended particulate matter (PM2.5) surpasses the air quality standard frequency 32.9% to fall from 2005 to 2012 14.2%; 2013 January to September spatial’ s poor station date is 5 station dates. The reason is the geographic position of Douliu City is under the Central Mountain range and the foot of Bagua Mountain, which the terrain is a marshland. In addition, the wind direction and the terrain wind relations, its easily lead to stranded air pollutants and not to proliferate. Douliu City local thin suspended particulate matter (PM2.5) annual mean density to fall from 2005 45.6 µ g/m3 to 2012 37.1 µ g/m3.
The thin suspended particulate matter (PM2.5) definition is smaller than 2.5 microns particle sizes for pellet its air operated particle size, the research demonstrated the particle size is smaller than 2.5 particles (PM2.5) piece to be able to penetrate the pulmonary alveolus to enter to the human body blood circulation. It causes asthma deterioration, reduced lung function, coughing, rapid heart beat, blood vessel inflammation, long-term exposure may cause increased mortality, cardiovascular disease, cerebrovascular disease increases, reduced lung function, and even lung cancer and other issues arising.
Pollution the PM2.5 originates may divide into the direct emissions to produce the primary thin suspended particulate matter with the derivative thin suspended particulate matter, which that produces after the photochemical reaction. The primary thin suspended particulate matter main origin for source of pollution combustion processes in and so on the vehicles, factory produces, because in the combustion process provides in the fuel to include has material of like heavy metal the high hazardous and so on. The emissions of the suspended particulate matter often includes materials and so on heavy metal, polycyclic aromatic hydrocarbon compound (PAHs) and Dioxin, the derivative thin suspended particulate matter then is NOX, SO2 and VOCs forms the molecule after the photochemical reaction. The EPD and some scholars research the entire air quality of Taiwan regarding the cloud fine southwest air quality region contribution quantity PM2.5 ingredient. However, the middle west air quality region were the highest contribution of various pollutants regarding to the cloud fine southwest air quality region. Sulfate (34.8%), nitrate (40.6%) and ammonium (35.8%), it shows that will create Douliu PM2.5 high nearly 30~40% to come from the middle west air quality region, but the remainder namely (including The Islands industrial district) by the local pollution emissions to create.
EPA from the year compared to 2012 Nantou Zhushan station information, including PM2.5 components mainly sulfate (14.32μgμg/m3), the nitrate (6.86μg/m3), the ammonium (6.42μg/m3), the organic carbon (5.56μg/m3) and the elemental carbon (3.05μg/m3) and so on primarily. But sulfate main origin for factory emissions; nitrate main origin for factory emissions, emissions from motor vehicles; ammonium salt main origin for contributions and so on agricultural activity; Organic carbon main origin for factory emissions and emissions from motor vehicles; Elemental carbon main origin for emissions from motor vehicles and place praise dust escape. Therefore, the environmental protection bureau will continue in view of the PM2.5 origin to conduct the detail research and the analysis will carry on the pollution control achievement.
The present stage of Environmental Protection Agency takes the control measure in advance of large-scale sources of pollution. The formulation tightened emissions standard, like the factory permit extension issued by the requirement must not to exceed the approved emissions, volatile organic matter VOC emissions standard tightened, electricity industry standard opacity tightened; The impetus pollution decrement measure ((increases price the subsidy to impel 2,600 hectare flat land afforestation’s (2012 and 2013), two stroke motorcycle replacement grants, electric locomotive replacement grants, not open-air burning guidance, diesel car and locomotive regular examination, cuttlefish vehicle reporting punishment)); The impetus agriculture reject regeneration energy plan and so on, and look forward to reduce the emission of pollutants, in order to help overall air quality improvement.
The 14th EPD press conference will be held shortly after the promised meeting of experts and scholars. The Yunlin County Environmental Protection Agency will invite participants to study and clarify the sources of pollution and to develop control strategies, and EPA will cooperate with the related pollution improvements.