Optimization Study On Dispose Technologies Of Municipal Solid Waste In Chengdu

The disposal of Municipal Solid Waste is one tough question challenging human being in the 21-century,and MSW is also one kind of resource which has been put wrong place,that is a valuable renewable resource that is used "product",but it is different from the traditional products,which pay more attention to grasping a whole,not just a single individual study.First of all,the paper investigates and analyzes the situation of collection and disposal of MSW in Chengdu, as well as the emergence of Chengdu, the volume of solid waste, physical composition and physical properties of the basis of geographical investigation. Secondiy,according to the MSW generations in decade,the paper predicts the output of MSW in Chengdu from 2010 to 2019 by Grey Model.By combine the survey dates of Chengdu MSW physics compositive in 2007 and the dates of other cities in China,the Physies compositive of Chengdu MSW in 2019 was predicted.Fuzzy comprehensive evaluation was adopted for preference of four technologies including sanitary landfill,thermophilic compost,incineration and synthesized disposal to treat MSW in Chengdu city.Based on the features of the MSW and the characteristics of Chengdu City as well as some necessary factors else,fifteen indicators were set up economically,environmentally,technologically and socially.Then a fuzzy comprehensive evaluation model was established by means of quantification,normalization and synthetically analysis of the indicators.The optimal sequence of the treatment technologies for MSW in Chengdu was obtained as incineration,sanitary landfill, synthesized disposal and composting.It is expected that this article couble be helpful in theory to treat MSW in Chengdu in future.