Research On Chemical Characteristics And Source Of The Acidy Rain In Dalian

With the rapid development of our social economy,our country is renewable energy consumption continues to increase,mainly in non renewable energy consumption is given priority to with coal energy,leading to the rapid increase of acid rain pollution emissions.With air pollution becoming more serious,the ash haze weather,the atmospheric acid deposition and light chemical pollution has become increasingly serious.In this paper,we study in dalian to acid source,emissions of pollutants,pollution status and pollution mechanism and causes of acid rain in dalian,further quantification of pollution sources and pollution sources.This paper 10 point in dalian area rainfall stations monitoring data as the research background,comprehensive using literature query,experiment testing,the combination of theoretical analysis,mathematical statistics research methods.First of all carried out a statistical analysis on the natural,social and environmental conditions in dalian,puts forward the change trend of air quality in dalian and the presence of the main environmental problem of air pollution;Secondly through the acquisition of dalian precipitation samples,and laboratory tests,it is concluded that the chemical composition of precipitation in the region and the pH value of precipitation and the frequency of acid rain;Finally,based on the main influence factors of acid rain in dalian statistical analysis,and using Hysplit4.9 software,using the method of backward trajectory,carries on the backward trajectory flow analysis,conditional probability analysis,cluster analysis,etc.,on the atmospheric transmission characteristics of dalian area precipitation and pollution source were analyzed.Thesis research results provide the basis for conducting environmental governance in dalian,also provide methods to the research of other similar cities.