Reliability study on surface water and drainage control system and the efficiency of GCL and GDL as capping system on Kuala Perlis landfill

Abstract

The objective of this study is to examine the characteristics of the surface water, drainage control system, and the landfill capping system on Kuala Perlis landfill. This study also aims to investigate the actions been taken or will be taken in ensuring the function of this landfill does not affecting the public health and surrounding environment along its operation particularly and for near future land use. This research will measure the quality of leachate on Kuala Perlis landfill and its effects to the surrounding environment. The leachates from landfill were tested for Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Ammoniacal Nitrogen (NH3-N) and heavy metal which were Zinc (Zn) and Chromium Hexavalent (Cr6+) from four different points within three weeks of sampling period. Based on the results, the average BOD concentration ranged from 15 mg/L to 44.8 mg/L while COD average concentration were between 130 mg/L and 4335.8 mg/L. Average NH3-N concentration ranged between 90 mg/L and 328.7 mg/L. For Zn concentration, the lowest value was 0.026 mg/L and the highest value was 0.240 mg/L while the average Cr6+ concentration ranged from 0.047 mg/L to 0.252 mg/L. For Kuala Perlis landfill, Geosynthetic Clay Liner (GCL) and Geosynthetic Drainage Layer (GDL) have been used as capping systems to control the surface water and, being as drainage systems.