Abstract
In order to clarify the effect of landfill leachate on water environment, algal assay procedure was conducted with several dilutions of a real leachate from a landfill site and the treated water of landfill leachate by the biological activated carbon fluidized bed process. Two kinds of freshwater algae, Selenastrum capricornutum and Microcystis aeruginosa, were used in this procedure. From the results obtained in this experimental study, it can be seen that the growth of S.capricornutum and M.aeruginosa was inhibited if undiluted solution of leachate was used; and if the EC50 was assumed as the dilution ratio of leachate, EC50 for the S. capricornutum and M.aeruginosa was 2.9% and 8.7%, respectively. In addition, the biological ac tivated carbon fluidized bed process was found to be an effective process to biodegrade the refractory organics and remove the hazardous materials in a landfill leachate.
