Environmental approach to assessment of landfill leachate effect on groundwater

Abstract

Mashhad landfill location on granitoid rocks has been covered by the alluvium by the present treaty and a height equivalent is 1080 meters. Granitoid basement rocks mix of granite, granodiorite and is pegmatite. Mashhad south Fault is the closest fault to this place where it passes through south. There are large cracks and joint in the rocks that play significant role in the leachate transfer due to landfill waste into the ground. In this study, the environmental impacts of Mashhad landfill was investigated, including land subsidence and pollution of soil and water resources. Also in this study to assess downstream pollution in landfill is done groundwater sampling and soil sampling standpoint of chemical and microbial analysis. Surveys implemented in the landfill clarify the concentration of metallic elements near the landfill are relatively high and amount of them is reduced with distance from the landfill. Also, nitrate and phosphate levels have been affected by landfills and agricultural activities.