Geophysical Survey on Open Dumping Landfill for Monitoring Spread of Leachate: A Case Study in Pekanbaru, Riau, Indonesia

Abstract

Pekanbaru is a city in Indonesia with high population growth. The increasing amount of the population has a parallel relationship with the increasing quantity of waste disposal. This study has been conducted on an open dumping landfill at Pekanbaru that surrounded by residential areas. Waste disposal produces leachate as a threat to surface water and groundwater resources. This study aims to investigate the contamination spread formed by leachate using the geophysical method. Direct Current Resistivity (DCR) has been used to produce 2 D Resistivity subsurface Models. Data acquisition has been done using multi-electrodes (32 electrodes) with spacing 2 m between electrodes. 2D Resistivity model produced, a contaminant from leachate represented by low resistivity value 26.1 - 870 Ωm. The deepest penetration of leachate that detected is around 3 m from the surface. It has been understood that leachate from the landfill of the study area is not contaminated groundwater yet. It confirmed by groundwater analysis at residential around the landfill area. By knowing the spreading of leachate, preventive action can be made to maintain the quality of groundwater resources.

Food Waste Management Utilizing Black Soldier Fly Larvae

“…Unfortunately, a prevalent practice in many restaurants involves disposing of food waste alongside household waste, market refuse, and other public facilities without proper segregation. Most food waste in Indonesia is co-mingled with inorganic waste and transported to final disposal sites which is often through open dumping practices, exacerbating environmental concerns [6][7][8].…”

Landslide Vulnerability Identification Based on the Geological Condition, GIS Calculation, and Field Validation in the Tropical Area

“…The triggers are various, such as earthquakes, heavy rains that saturate the soil to increase the pore water pressure of the soil, and others [10][11][12] . One form to minimize the occurrence of landslides can be done by mapping the source area of the landslide disaster so that it can map the area that is likely to be affected by the landslide disaster and make mitigation actions in the event of a landslide [13][14][15][16][17][18] .…”