Kvalitet i nya deponiers lakvatten - resultat från Renovas deponi Fläskebo

The European landfill directive increases demands on landfills. The amount of organic matter being landfilled
is restricted and landfills should be as dry as possible. The consequences of these changes are not yet fully
understood. In this study the first landfill in Sweden to be constructed according to the directive, Fläskebo, has
served as an example of future landfills. Its leachate has been studied with multivariate techniques (principal
component analysis and canonical correlation analysis) and with the geochemical model PHREEQC. Several
interesting correlations were found and the results clearly show that multivariate statistics can be of great use
when studying landfill leachate. Their ability to extract the most important information is one thing that can
be very useful. Combined with geochemical models they can provide an increased understanding of processes
governing leachate quality. The next part of the study will be to use multivariate statistics to compare Fläskebo’s
leachate with that from older landfills to find interesting differences and similarities.