Analysis And Countermeasures Of Air Pollution Prevention And Control In Lanzhou

Air pollution was the Lanzhou city permanently,is Lanzhou to the world "is a major negative name card","suffering from heart and lung harm people's livelihood,since the official focus on monitoring the city air pollution index in Lanzhou city in 2003,10 were located in the country,ranked in the bottom part of the year.Due to the influence of special topography,industrial structure,energy structure and other factors,over the city of Lanzhou is covered with a thick layer of "black pot",especially in the winter heating period pollution is more serious,the outline of a building from the city to see tens of meters away from the top of the mountain,looks down and even can not find city.The citizens said,"the sun and the moon are a sample,a day and a night,a sparrow and a crow,a sample,a nostril and a chimney." Many people living in this city,so try to leave Lanzhou,to the south city to seek development.Since 2012,provinces and cities together against pollution,to tackle tough results,achieved initial results of Lanzhou City,the old industrial base of air pollution control,air pollution from long-term cover "in the city on the head of the black hat",2014 year old standard(API)good days reached a record of 313 days,an increase of 14 days,standard the rate of 85.8%,achieved excellent days since 2011 five even increase,the city ranked stable exit country ten heavily polluted city.There is a certain improvement in the environmental air quality,but the air pollution situation in Lanzhou is still very severe.In recent years,with the rapid development of social economy in Lanzhou city by the adjustment of energy structure,environmental air quality control gradually increase the difficulty,pollution situation continued to improve but some deep-seated contradictions have not yet effectively solve the deep-seated problems gradually highlight,governance "ceiling effect",to address the constraints of tackling the problem of short board.There is a new change in the atmosphere pollution situation.In the process of prevention and control of air pollution,it is urgent to understand the latest trends in the change and formation of air pollution in Lanzhou.There is still great pressure to eliminate the influence of irreversible and uncontrollable factors such as natural endowments and meteorological conditions,and there is still great pressure in the current work of pollution control in Lanzhou.First,unconventional pollution factors have risen to new key control objects.The concentration of pollutants at the pollution problem of the old pollution factors still exist,new start,nitrogen dioxide(NO2),PM10 and PM2.5 annual average concentration of three pollutants were still exceed the standard 0.2 times,0.8 times and 0.7 times,NO2 annual average concentration of non-compliance by 2013 standards in 2014,in PM10,PM2.5 the pollution factors have not been fundamentally governance under the condition of NO2 pollution began gradually,NO2,O3,volatile organic compounds(VOCs)and other non conventional pollution factor has risen to focus on the control of new objects,types of pollution from coal-burning pollution in main transition to dust,vehicle exhaust and soot mixed pollution.Two,the space of Engineering emission reduction is obviously reduced.Air pollution control of fixed source current city and the surrounding industrial enterprises,heating boilers,catering enterprises has basically bottomed out,only the blue Petrochemical Industries Co in 2015 issued by the national emission standards of the industry after the emission intensity can be greatly decreased,oil upgrading can be achieved after the tail gas decreased substantially,but the two thermal power plant big pressure on the small "relocation take time,Ping fan power plant,Xigu power plant implementation of ultra low emission emissions decreased after heating boiler Co.,to achieve the" double zero ",catering enterprises norm,dynamic control effect is stable,reduction of space is extremely limited,the existing fixed source further standard strict control on the urgent need to the management of environmental benefits.Three,scientific cooperation and pollution control urgently need to be strengthened.The various departments at all levels and in various industries and the level of pollution prevention and control measures and management ability is uneven,rough and lack of scientific and technological support and fine precision,city traffic capacity,bare land greening sclerosis,secondary roads and other infrastructure construction is lagging behind the maintenance control effect perceptibly,to adjust and optimize the pollution control ideas in the top-level design idea and scientific performance " under the urgent need to solve the deep-seated problems restricting the further expansion of the effectiveness of pollution control from the source and root.The main topic for the current atmospheric pollution situation in Lanzhou city are analyzed in two aspects,one is through the comparison of Lanzhou city social development and energy consumption,combined with the Lanzhou city location,topography and weather and other natural conditions,analysis of Lanzhou city industrial sources,urban life source,VOCs and other mobile source air pollution features;two is through the study of Lanzhou city environmental monitoring station monitoring data in recent years,temporal variation and spatial variation analysis of six major pollutants.Through the analysis,the current Lanzhou City air pollution prevention and control of air pollution faced by PM10 and PM2.5,and industrial emissions of coal-fired(coal-fired power plants,residents burning)is a new situation highlights the main sources of particulate pollution,Lanzhou city environmental air particulate dust pollution is serious,caused by motor vehicle.According to the result of the analysis,and review of air pollution prevention and control measures in Lanzhou city in recent years to take,to think about the problems and difficulties of the Lanzhou air pollution prevention and control work,from the optimization of urban industry layout,the environmental carrying capacity planning of city development;to promote the efficient and clean use of coal,to further optimize the energy structure;industrial upgrading the level of pollution control,strengthen pollutant control;improve the city management level,effective control of the surrounding city open source;optimize the transportation structure,the implementation of bus priority strategy.;seasonal variation of particulate pollution,pollution weather should establish coping mechanisms;to find out the base,strengthen the scientific research and innovation ability construction;management mechanism,the establishment of pollution of the United Front;expand publicity,arduous and persistence,fully understand the pollution prevention and control of the environmental management policy and put forward some measures to prevent and control pollution in order for the continuous improvement of air environmental quality in Lanzhou city to make a modest contribution.