Estimating landfill leachate BOD and COD based on rainfall, ambient temperature, and waste composition: Exploration of a MARS statistical approach

Municipal solid waste generation is increasing rapidly globally. Increasing storage of waste in landfills means increased production of liquid landfill leachate. Leachate contains organic and inorganic pollutants which must be treated to reduce its potential impact on surrounding water supplies. To design landfill leachate treatment, its chemical composition must be known; however, the composition of leachate can vary widely depending on waste composition. Measuring leachate constituents can be expensive and time consuming, and is not possible for a landfill under construction. A global model able to forecast leachate quality parameters based on a landfill’s waste composition, ambient temperature, and rainfall rate is critically needed. This research represents a first step in development of such a model.