Behavior Of Organic Matter And Landfill Gas Potential Analysis In China And 'EU' MSW Under Simulated Landfill Conditions

Compared with composting, anaerobic digestion and incineration, sanitary landfill has benefits of its lower cost (at least on short term) and way of treating, but a specific technology is required to solve the problem of environmental pollution, such as leachate and landfill gas (LFG) emission. LFG collection is both, for environmental reasons (GHG abatement), as well as for Energy recovery standard in developed countries. Following these acts China has recently adopted LFG collection under CDM fund support, expecting certified emission reduction (CERs) from buyers (Annex 1 signatory countries under the Kyoto protocol). But the CERs as estimated in the PDD documents cannot be achieved. The reasons of different organic matter degradation behavior at Chinese landfills were tried to analyze in this paper.The China and simulated EU MSW were landfilled under laboratory simulating comditions in this study. The main content investigated as follows: The effect of inoculun and rainfall on the Chinese MSW organic matter under simulated landfill conditions; Diffrence of organic matter transfer behavior between China and EU MSW under simulated landfill conditions; Effect to landfillgas potential reduction based on leachate drainage between China and EU MSW under simulated landfill conditions. As a result, during the first 400 days the landfilling process and in particular the organic matter transfer were quantified by the measurement of settlement, material density, volume and mass reduction, gas and leachate emission quantities. As there was no LGF production during the test period the leachate discharge were quantified by measuring COD, pH, NH3-N, etc. The organic matter discharge was finally expressed as TOC loss. The TOC mass loss by leachate drainage based on the total amount of fast and slow bio-decayable organic matter in reactors with and without rainfall were 29% and 14% respectely. The Chinese and EU MSW biogas loss only based on leachate emissions was about 6.15%(v/v) and 0 respectivelly during the first 180 days.