Characterization of leachate from Ampar tenang closed landfill site, Selangor, Malaysia

Abstract

Due to rapid population growth, continuous economic development, industrialization and urbanization, the generation of municipal and industrial solid wastes is increasing. Landfilling is still considered as the most suitable and applicable way for managing the huge amount of generated solid waste. However, large amount of leachate with high level of chemical, toxic and hazardous materials and heavy metals is generated from landfills and cause hazard to environment by polluting soil, surface and groundwater resources. The study aimed to characterize the leachate generated from Ampar Tenang Closed Landfill (ATCL) site located in Dengkil, Selangor, Malaysia. Leachate samples were collected from three different sampling points at ATCL namely; inlet, aerated and stabilized ponds. Laboratory tests were conducted to determine the physical and chemical characteristics of the samples collected from the landfill site. It was found that the samples contain high level of electrical conductivity, total suspended solid, chemical oxygen demand and dissolved oxygen. These findings could help for the continuous and monitoring improvement of leachate management at ATCL.