The Vertical Diffusion Of Tianjin Gas Boiler Air Pollutants Environmental Impact Study

In recent years,air pollution problems have become increasingly prominent in our country,especially in Beijing,Tianjin region,has formed a complex regional air pollution situation.In order to protect the people's health,to improve air quality,as a means to adjust the energy structure,coal-fired boilers is rapidly being replaced gas boilers.However,the growing number of high-rise buildings,We urgently need a quick,accurate search methods to determine the relationship between the exhaust gas boiler height and the distance between the surrounding high-rise residential.In this case,we carried out a gas-fired boiler emissions of air pollutants close to an environmental impact study vertical diffusion.SCREEN3 estimation model is the State Department of Environmental Protection promulgated the "Technical Guidelines for Environmental Impact Assessment-Atmospheric Environment"(HJ2.2-2008)recommended estimation model,the model has been widely used to determine the level of atmospheric environmental impact assessment and tertiary aspects of the evaluation to estimate atmospheric effects.However,due to its meteorological parameters set in advance,in reality,the environmental impact of atmospheric forecasting work,meteorological parameters do not match with the actual situation,It will lead to the final result of the deviation prediction,Error directly affect the credibility and overall environmental management measures targeted environmental predictions conclusions.Our work,first analyze the principles and framework SCREEN3 modes,from several aspects of the localization and the like to calculate the adjustment scenario atmospheric stability,wind speed,wind profilers and other meteorological parameters index for pattern correction,uphold the accord Tianjin Meteorological Features principles for estimating model parameters SCREEN3 localized correction for improved model in Tianjin applicability and relevance.Environmental Impact Atmospheric Prediction System is an important part of Environmental Impact Assessment.Calculations help me visualize simulation and understand the diffusion characteristics of atmospheric pollutants.Based on the study SCREE3 localized weather conditions estimation model,improve SCREEN estimation model in Tianjin on the basis of suitability to NO_X as the main pollution factor analysis of the diffusion characteristics of Tianjin Gas Boiler Air Pollutants in the vertical direction,to find out the pollution spatial distribution of matter and the degree of influence the concentration of different sizes drawn close NO_X gas boiler vertical contour map,to help make specific pollution control measures in the subsequent environmental impact assessment process for the gas-fired boiler house project environmental management,site design,chimney height chosen to provide a reference,to achieve social,economic and environmental benefits of unity.