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        Wet electrostatic precipitator: is China a piece of blue sky
        2014/5/9 閱讀次數:[1302]

        Haze Dec.15, how an untrammelled hard to get!

          The past millennium. Among other factors do not talk about, living in the Middle Ages under natural environment people is happy -- in the face of green mountains and rivers, Chen Hui afterglow, among them poet Qin can elegant hum missing fog up the house, maze Du, Taoyuan are no way back. Poor solitary Museum closed spring, where the setting sun Twilight cuckoo sound so lucid and elegant style. 
            Now, a little look fierce words haze, instead of always provide our people with elegant and romantic mist.
             Since January 9, 2013, the eastern part of China in haze and severe pollution of days, the central meteorological station will fog blue warning to upgrade to a yellow warning. 13, Beijing city issued Beijing meteorological history first haze orange signal warning, air pollution index was close to 1000 g.
        Over the past 2 months, Beijing Tianjin Hebei region serious haze weather. The haze weather is not the first time, only in the case of Beijing, nearly two years Beijing winter at least 30 days of air quality is heavily polluted, but PM2.5 is close to 1000 micrograms of the situation, but it is rare.
        Not only that, from North China to central to Huang Huai, the Jiangnan region, there are severe and serious pollution in big range. 1430000 square kilometers above the fog shrouded, more than 800000000 of the population affected.
        In severe haze January 29th morning, Beijing, Xinzheng, Qingdao, Hangzhou airport was seriously affected. The traffic department of Transportation Network Information Center shows, continued to the Middle East China haze weather, resulting in Beijing, Tianjin, Hebei, Shandong, Hunan, Hubei 6 provinces and more than 30 local sections of highway access blocked. Monitoring shows, the Beijing Shanghai, Beijing and Taiwan, Hong Kong and Macao, Rong Wu, green bank, even Huo expressway, Shanghai and Chongqing main transportation channel sections short-term closed, the affected section in the noon will resume traffic. If the traffic, business losses to join the loss data, far more than the value of GDP3%, the annual loss of more than 1 trillion yuan will become the norm.
        In January 14th, the Asian Development Bank and the Tsinghua University announced towards environmentally sustainable future -- the people’s Republic of China National Environmental Analysis report, the annual economic losses caused by air pollution China, disease cost the equivalent of 1.2% of GDP Based on, willingness to pay estimates are as high as 3.8% based on. In 2012, Chinese total GDP 51932200000000 yuan, with 1.2% meter to 3.8% meter reached 623200000000 yuan, up to 1973400000000 yuan.
        So, academician Zhong Nanshan issued his warning: haze be making more than SARS!
        Ecological disaster so severe, it attracts the attention of the central government.
        In January 15th, a grassroots Research Forum, Vice Premier Li Keqiang pointed out: the accumulation of atmospheric pollution problem is a long-term process, solve the problem needs a long process, but we must DOSOMETHINPREVIOUSLYUNRELEASED!
        At the same time, Deputy Minister of environmental protection Wu Xiaoqing in answer to a reporter stressed: at home and abroad indicate that the prevention and control of atmospheric pollution process, solve the serious air pollution problems, is a long-term and arduous task, Europe and other developed countries spend 30-50 years to basically solve the problem of air pollution. We should adopt a correct attitude towards the current air pollution situation, fully aware of improving the quality of atmospheric environment of the arduousness, complexity and long-term, to fight a protracted war preparation.
        Is the contemporary people will like this for a long time, long life under the haze shrouded in the shadow?
        Fortunately, in Jiangsu the best environment engineering Co. Ltd. the industrial dust from quantitative change to qualitative breakthrough.
        A wet electrostatic precipitator scheme argumentation enlightenment
        Haze lock China, arch-criminal dust
        Causes of haze, haze weather is complex. Fine part. Fine particles suspended in the atmosphere, causing air pollution, resulting in reduced visibility, fog and haze, wherein, the diameter less than or equal to 2.5 micron, fine particles of human hair thickness 1/20 is known as PM2.5, also known as pm2.5.
        PM, English called particulate matter (particles). Scientists say the content of such particles per cubic meter of air with PM2.5, the higher the value, on behalf of air pollution is more serious.
        The PM2.5 standard, is proposed by American in 1997, mainly to small particles of harmful matter more effectively monitor appeared along with the industrialization increasingly developed, in the old standard is ignored. The PM2.5 index has become an important measure and control air pollution index.
        A major source of PM2.5, is the process of daily power generation, industrial production residues, car emissions after combustion and emissions, mostly contain heavy metals and other toxic substances. In general, the coarse particle size of 2.5 microns to 10 microns from the main road dust; fine particles less than 2.5 microns (PM2.5) is mainly from the burning of fossil fuels (such as coal, motor vehicle exhaust), volatile organic compounds.
        China’s primary energy dominated by coal, China’s coal production in recent ten years from 14.7 tons of growth in 2001 to 2011 35.2 tons, an average annual compound growth rate of 9%, among them, the industrial production of coal consumption has occupied an important position in the total coal consumption in our country, the perennial maintained at more than 94%. Power and coking is the main use of coal industry, the coal industry accounted for 50% and 15%. Coal fired power plant is an important sector of emissions of sulfur dioxide, nitrogen oxides, soot, along with coal into electricity proportion rising, most coal-fired emissions will be more to electric discharge. The power of sulfur dioxide emissions accounted for the national total emissions of sulfur dioxide accounted for 42.4%, nitrogen oxide emissions of about 1/3, smoke and dust emissions accounted for 36.7%. Control of coal-fired power plant flue gas emissions, to reduce PM2.5, alleviate the city air quality has a great role.
        At present, our country 90% of the electricity comes from power, and the power to burn a lot of coal. In 2012, with the total consumption of coal industry in our country is 37 tons, 18.5 tons of coal thermal power consumption. In the combustion, produce 30 kilograms of 1 tons of soot combustion of coal (0.03 tons), then, 18.5 tons of coal burned, produce about 5550000 tons of fly ash, the ash produced 5/1000 of PM2.5, which will produce 27750 tons of PM2.5.
        This year 1, in February, the most serious in China where PM2.5 has more than 1000 micrograms per cubic meter, while the American average less than 15 micrograms per cubic meter, the most serious desertification of the Sahara desert is only 50 to 70 micrograms per cubic meter. The global PM2.5 the highest area in North Africa and North China, East China, central China Chinese all.
        So, Is it right? Vehicle exhaust emissions caused by PM2.5 pollution is so serious?
        At present, China’s car ownership has increased, but the total is still not up, America cars most of national. By the end of 2011, the total vehicle China 219000000 cars, the car a total volume of 80000000 units, the total American car to 285000000, is 3.5 times of the China. While the content of PM2.5 Chinese is about 5 times of the America.
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