Toshio Kawanishi

Desalination for landfill leachates containing condensed inorganic salts

Abstract Recently in Japan, leachates from general waste landfills have increased their inorganic salt concentration and have caused various problems inside and outside treatment facilities. Because there is strong demand for countermeasures to cope with these problems, the authors have undertaken studies on leachate desalination using a continuous type electrodialyzer. The results of the experiments confirmed that stable desalination can be achieved by conducting the conventional leachate treatment as pre-treatment. Furthermore, comparing desalination methods, we have come to the conclusion that electrodialysis is most appropriate for landfill leachate desalination.