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Waste Component Characteristics of Informal Landfill Sites in Beijing

JI Hua1,ZHANG Jin-song2,XIA Li-jiang3(1.Environmental & Hydrogeologicial Research Department,BGI Engineering Consultants LTD.,Beijing 100038,China; 2.Beijing Environmental Sanitation Engineering Research Institute,Beijing 100028,China; 3.College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China)  
Researches on three typical informal landfill sites and a municipal solid waste landfill one were carried out.The results showed that stale waste components were similar to each other in informal landfill sites and municipal solid waste landfill,one but organic matter was lower in informal landfill sites,while wastes were dispersive in informal landfill sites.Organic matter mainly was less than 5% in the regional of building muck;It was similar to the municipal solid waste landfill site that organic matter was generally higher than 10% and the highest internal temperature was about 42℃ in the regional of garbage informal landfill site.
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