Suitability Assessment Of Domestic Refuse Landfill Site In Tongliao City

Along with the deepening of reform and opening up, Chinese social economy hasachieved a rapid development, and the people’s material life level also keeps growing. Withthe accelerating urbanization, the output of urban living garbage is increasing. According tothe statistics of the first national pollution source census bulletin, the national total garbagedisposal reached to1.69billion tons by the end of2007. The volume of waste landfillachieved to1.53billion tons, which accounted for90.5%of the total garbage disposal. So far,our country has2353city landfill plants, and which is the main treatment way of garbage.The site selection of landfill is the first step of the construction of waste landfill, whichinvolves environmental science, engin ring, economics, social and legal aspects, and so on.Common used evaluation method of city garbage landfill site suitability analysisincludes Analytic Hierarchy Process (AHP), Geographic Information System (GIS), fuzzycomprehensive evaluation method, and Grey Clustering Method, etc. This passage used AHPmethod to evaluate the suitability of Tongliao City garbage landfill selection.According to the selection requirement of garbage landfill, and based on the relatedlaws, regulations and standards of national garbage landfill site selection, this passage fullyconsidered various factors of site selection. Thinking about the geological factor,hydrological factor, natural and social environment factors, we primarily choose3alternativesites in Tongliao: the site at Xiboyingzi, Qinghe Town, Keerqin District; Tongde DianJianhua Bricks Factory Abandoned site; and the site at Sanhetang Village, Qinghe Town,Keerqin District. Using AHP method, I made optimized selection to the suitability ofTongliao City garbage landfill. During the evaluation, I made the standards after consideringgeographical environment and location, traffic conditions, geological environment,environmental protection requirements, site construction conditions and other conditions,through site evaluation factors and by using linear weighted function mathematical modelfor the calculation of the various alternative site comprehensive scoring. The evaluationresults indicate that, among the3alternative sites, the site at Xiboyingzi, Qinghe Town,Keerqin District is ranked first with comprehensive score of73.91, according to thesuitability of the grading standards, which is the most suitable site; the second one is the siteat Sanhetang Village, Qinghe Town, Keerqin District, with comprehensive score of71.40, which is also a suitable site; the last one is Tongde Dian Jianhua Bricks Factory Abandonedsite, with comprehensive score of66.36, which is a barely suitable site. So the site atXiboyingzi, Qinghe Town, Keerqin District is the most suitable site.This passage comprehensively considered the factors of landfill site selection, used theAHP method to select a most suitable site for Tongliao City landfill site. This had provided ascientific proof for selecting Tongliao City landfill site.