Keywords: landfill leachate, peat, carbon-containing ash, wood pellets, polyurethane, organic compounds, inorganic pollutants, filter materials, pollutant removal, environmental pollution, solid waste management
Column studies aiming at identification of suitable filter materials for pollutant removal from landfill leachate
Landfill leachate contains a complex mixture of inorganic and organic pollutants, which need to be removed before they pollute the environment. Different filter media (peat mixed with either carbon-containing ash, polyurethane waste, or wood pellets) were investigated with respect to their possibility to simultaneously and at low initial concentrations remove metals, polar and non-polar organic compounds. The mixture of peat and carbon-containing ash was found to be the best medium. Reduction in leachate of phenolic substances was 96%, of PBDEs was over 98%, of DOC 40% and of important metals as Cu, Pb and Sn 60%, 90% and 93%, respectively.