In this study, the effects of inorganic permeants on the permeability of compacted clay soil have been investigated by chemical, physicochemical and sieve analyses as well as scanning electron microscopy (SEM) of the clay soil used in the experiments. Standard and modified Proctor compaction tests were applied to the clay soil obtained from the Sile-Komurcuoda Landfill Area. The effects of inorganic permeants (ferrous Iron and manganese) on the permeability of compacted clay soil samples have been analyzed. Ferrous iron and manganese have been also measured in the Influent and effluent in order to determine the treatment capability of the compacted clay soil. Adsorption of clay soil was studied in both a batch and continuous reactor.