IRRIGATION OF SOIL WITH SYNTHETIC LANDFILL LEACHATE BREAKTHROUGH BEHAVIOUR OF SELECTED POLLUTANTS

摘要

A leaching column experiment was conducted to investigate the feasibility of soil irrigation with landan leachate as a decontamination technology. A loamy sand was irrigated with synthetic landfill leachates with and without phenol, zinc and copper and combinations there of. Irrigation was applied at a rate of one pore volume twice per week for l8 weeks, equivalent to a total application of l l65 mm. Electrical conductivity in all column effluents was lower than in the influent solutions. Changes in effluent pH with increasing numbers of pore volume displacements were influenced by the presence of zinc and phenol and could be adequately modelled using cubic response functions.