Research On The Evaluation And Distribution Of Domestic Pollution Sources In Chenzhou City

Domestic pollution sources, as one of important pollution sources, will product a lot of water, air, solid waste and other pollutants. And these pollutants have a wide range of variety, and they have caused serious effects to environment and human life. At the same time, its prevention and control has become a more and more important research direction of environmental pollution.Chenzhou City is the typical mountainous area city of southern China. This article discussed the space distribution and main cause of domestic pollution sources and calculated the load, usd the method of marking emissions to make index evaluation and cluster analysis to divide the type of pollution, and GIS to make pollution divisions by using the first national pollution census data, combining chenzhou terrain, population, resource and economy development present situation. Based on this, puts forward the main prevention measures of Chenzhou pollution.This article focuses on the water pollution and atmospheric pollution, invested and analysised the 11 counties of Chenzhou. Now investigation and analysis results are as follows.1. Chenzhou water pollution discharge mainly by urban residents, other pollution sources such as living accommodations industry, catering, service had a low emissions, and the main pollutants are COD, phosphorus and total nitrogen. The load of sewage pollutant is 12167.36, marking emissions. COD, TP and TN, respectively, 2465.63、2617.50 and 7084.19, accounting for the total emissions 20.26%,21.52% and 58.22%, TN is the largest.2. Air pollution is very serious in Chenzhou, Sulfur dioxide、nitrogen oxides and other gases are the main pollutants, mainly discharged by boiler. The load of air pollutants is 76544.38. Marking emissions of SO2, NOx and the TSP are respectively 25247,32551.67 and 18745.71, accounting for the total emissions 32.98%,42.53% and 24.49%, NOx is the largest.3. Judging from the area, marking pollution index of Beihu county is the highest in water pollution, for 2.6, Guidong county is the lowest 0.26. And air pollution, Guiyang county is the largest of 18219.2, accounts for the city of 23.8%, the smallest is Jiahe county,1260.63, accounted for the city of 1.65%. Regional pollution degree to a certain extent and population density of discretion and the number of pollution source.4. Using clustering analysis to evaluate water pollutants, the results showed that Chenzhou can be divided into three categories:Jiahe county, Anren county, Guidong county, Linwu county, Rucheng county as a kind of accommodation, mainly are catering, urban residents and life pollution. Zixing city, Yongxing county as a kind, primarily urban life pollution. Guiyang county, Yizhang county, Suxian county, Beihu county as a kind, primarily catering, hospitals and urban life pollution.5. Using clustering analysis to evaluate air pollutants, the results showed that Chenzhou can be divided into three categories:Yizhang county, Rucheng county, Guidong county, Beihu cuounty, Linwu county, Jiahe county and Anren county as a kind, mainly catering, urban residents living. Zixing city as a kind, mainly by independent combustion facilities.and Suxian county and Guiyang county, mainly urban life pollution.