Development of Calcium Separation Technology Development of Calcium Separation Technology for Leachate Treatment Facilities at Final Landfill Sites

Abstract

 Taiheiyo Cement Corporation has developed a new calcium removal technique using ion-exchange resin to solve the calcium scale problem at leachate treatment facilities of landfills. This technique is a completely new calcium separation method based on ion chromatography. A pilot-scale test model was installed at an existing landfill, and its calcium separation capacity was demonstrated in a test run. Unlike the conventional method which uses sodium carbonate, this method uses no chemicals and thus allows for substantial cost reduction which is expected to relieve local governments of the burden of purchasing expensive chemicals.