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Biodegradation of Organic Matters from Mixed Unshredded Municipal Solid Waste through Air Convection before Landfilling
Landfilling is a dominant municipal solid waste (MSW) disposal method in most developing countries. In China, ∼85% of the generated MSW is being disposed of in the landfills. The amount of MSW is growing rapidly with the rate of ∼8–10% annually, which contains a high quantity of moisture and organic matters. The problems of leachate treatment and landfill gas (LFG) emissions are increasing gradually. Reducing the hazard before em-placement, pretreatment of MSW before landfilling has become very important for the conventional landfill. In this study, aerobic pretreatment of mixed MSW was used, and much attention has been given to the natural convection of air in the mixed and unshredded MSW for bioconversion of organic matter (OM). This study is an attempt to investigate aerobic pretreatment suitability for the mixed and unshredded MSW at Beijing. A pilot-scale aerobic pretreatment simulator (APS) was developed at Beishen Shu Landfill in Beijing. To work out the bio-degradation of the OM in the APS, fresh and pretreated MSW samples were collected and analyzed for OM, moisture content, temperature, chemical oxygen demand, total organic carbon, carbon, nitrogen, hydrogen, lignocelluloses, and biochemical methane potential at various stages of the pretreatment. Furthermore, results of the fresh and pretreated MSW are compared. Significant reduction in the observed parameters of the pretreated waste samples is observed. This work demonstrates that pretreatment is significantly effective in reducing the landfill emissions that is leachate and LFG.
Biodegradation of Organic Matters from Mixed Unshredded Municipal Solid Waste through Air Convection before Landfilling
Landfilling is a dominant municipal solid waste (MSW) disposal method in most developing countries. In China, ∼85% of the generated MSW is being disposed of in the landfills. The amount of MSW is growing rapidly with the rate of ∼8–10% annually, which contains a high quantity of moisture and organic matters. The problems of leachate treatment and landfill gas (LFG) emissions are increasing gradually. Reducing the hazard before em-placement, pretreatment of MSW before landfilling has become very important for the conventional landfill. In this study, aerobic pretreatment of mixed MSW was used, and much attention has been given to the natural convection of air in the mixed and unshredded MSW for bioconversion of organic matter (OM). This study is an attempt to investigate aerobic pretreatment suitability for the mixed and unshredded MSW at Beijing. A pilot-scale aerobic pretreatment simulator (APS) was developed at Beishen Shu Landfill in Beijing. To work out the bio-degradation of the OM in the APS, fresh and pretreated MSW samples were collected and analyzed for OM, moisture content, temperature, chemical oxygen demand, total organic carbon, carbon, nitrogen, hydrogen, lignocelluloses, and biochemical methane potential at various stages of the pretreatment. Furthermore, results of the fresh and pretreated MSW are compared. Significant reduction in the observed parameters of the pretreated waste samples is observed. This work demonstrates that pretreatment is significantly effective in reducing the landfill emissions that is leachate and LFG.
Biodegradation of Organic Matters from Mixed Unshredded Municipal Solid Waste through Air Convection before Landfilling
Mahar, Rasool B. (author) / Liu, Jianguo (author) / Yue, Dongbei (author) / Nie, Yongfeng (author)
Journal of the Air & Waste Management Association ; 57 ; 39-46
2007-01-01
8 pages
Article (Journal)
Electronic Resource
Unknown
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