TENGKU NILAM TENGKU IBRAHIM, NOOR ZALINA MAHMOOD AND FARIDAH OTHMAN
Abstract
In Malaysia, landfilling is the most preferred disposal method while majority of the landfills are not equipped with proper leachate treatment system that leads to the environmental problems. Leachate is the main factor to river water pollution as most of the landfills are located near to the river which is the main source of water for the country. The study aimed to estimate the leachate production from landfills in Selangor. A simple mathematical modelling is used for the calculation of annual leachate volume. The estimate of identified landfill area (A) using Google Earth is multiplied by the annual rainfall (R). The product is expressed as volume (V). The data indicated that the leachate production is high even it is fully closed. It is important to design the efficient landfill and proper leachate treatment processes especially for the old/closed landfill. Extensive monitoring will be required to predict future impact.