Increasing moisture content and water migration inside deposited waste

1 Increasing moisture content and water migration inside deposited waste 

From a practical point of view, water field capacity and hydraulic conductivity are very important physical waste parameters. These properties determine the amount of leachate and their formation rate. Based on the values of these parameters the operational conditions for liquids recirculating inside the landfill can be determined. These parameters depend mainly on waste particle size and organic matter content, which determine pore size distribution and the porosity of the medium. Field capacity is the value of water content held in the material after the gravitational water has drained away. The field capacity of municipal solid waste varies over a wide range between 14-44%i v/v (Zeiss Major, 1992/93, Bengtsson et al. 1994). According to an evaluation by Reinhardt and Ham (1974) the volume of liquid addition, which allows a water field capacity in waste to be reached varies between 0.1-0.2 m per Mg of solid waste (25,000-50,000 gallons per 1,000 tons). 

Waste category Chandrappa Das (2012) Valkenbuig etal. (2008) Gidarakos etal. (2005) 

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