Hydrological aspects of an industrial landfill

Abstract

A water balance for a landfill in the South-West of Sweden has been performed. The waterbalance is based on measured values of leachate and calculated values of potentialevaporation using Penman's equation. The calculations include a period of 6 years (1995-200 I). During this period, the yearly precipitation was 6 I 0-1180 mm in the Halmstad area. Itwas concluded that the total storage of leachate in the landfill and in the ponds increased withtime. If increasing tendency will proceed then the amount of leachate generated might behigher during the next years and similar to results found in the literature. There is a need forthe more physical based model, the Hydrologic Evaluation of Landfill Performance (HELP)model, for calculation in order to take into account the top cover soils and vegetationinfluence.