BIOREACTOR LANDFILL LYSIMETERS STUDIES FOR LEACHATE CHARACTERIZATION AND WASTE STABILIZATION IN INDIAN CONDITIONS

摘要

Land-filling of solid waste has been considered to be one of the best options of Municipal solid waste disposal. Bioreactor landfills have proved its worth in faster stabilization of wastes as well as treatment of the re-circulated leachate. In Indian context the organic content of the solid waste is more due to consumption of unprocessed food items. The bioreactor land fills are most suited landfills that are efficient and economical. However, no much work is reported in this direction in India. The experimental modeling of landfills relies heavily on lysimeter studies that have been in practice since long. The present study is an attempt to perform lysimeter experiments for organic solid waste for bioreactor feasibility in Indian context. Two lysimeters under different operational conditions have been experimented for leachate characterization and waste stabilization. The results indicate that the leachate characteristics indicate faster decay of pollutants. The trend of decay of pollutant level in 24 weeks indicates encouraging results related to the quality of leachate. The lysimeter studies can be extended to prototype studies of bioreactors.