HYDRAULIC CONDUCTIVITY OF COMPACTED MUNICIPAL SOLID-WASTE

Dry municipal solid waste (MSW) samples were compacted in Plexiglas co lumns to densities of 160, 320 and 480 kg m(-3). The columns were set- rip as constant head permeameters. Wafer flowed continuously through t he columns under hydraulic gradients of 2-4 ..0 m m(-1). Hydraulic con ductivities were calculated according to Darcy's equation. Hydraulic c onductivity was found to be time-dependent The temporal variation was attributed to varying degrees of saturation clue to gas formation and relative movement of fine particles in the columns. The average hydrau lic conductivities at 160, 320 and 480 kg m(-3) were 9 . 6 x 10(-2), 7 . 3 x 10(-4) and 4 . 7 x 10(-5) cm s(-1), respectively.