Simulating the Hydraulic Behavior of a Sewage Sludge-Amended Mine Soil

ABSTRACT Aone-dimensional, infiltration model was used to simulate the infiltration process in sludge amended mine soil. Simulation results indicated more rapid advance of the wetting front in sludge amended mine soil as compared with unamended mine soil. The simulation predicted that 1% addition of sludge results in 1.65-fold increase in cumulative infiltration, and 5% addition of sludge results in 2.85-fold increase in cumulative infiltration during a 3 h infiltration period. Further addition of sludge over 5%, however, did not cause any additional increase in infiltration.