Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Titre : Solid Waste Landfills Management And Its Relation With Groundwater Contamination

Auteur : El-Kholy, Samer Mohamed

Etablissement de soutenance : Menoufia University

Grade : Master of Science in Civil Engineering 2021

Résumé partiel
Municipal solid waste (MSW) is considered to be one of the biggest challenges facing most of the developing countries including Egypt. Notwithstanding the fact that there are various methods used in the disposal of MSW, landfilling remains an attractive disposal method after applying proper upstream feasible management interventions. The landfill is an engineering structure constructed to contain waste, and prevent contaminants generated from waste reactions from polluting the surrounding environment such as leachate. In developing countries, landfills (and what originally developed as dump areas) usually become unsuccessful after a while in operation for many reasons including receiving medical, and hazardous waste which contains dangerous substances unsuitable for landfilling, and besides, uncontrolled leachate collection that may cause percolation of leachate into the soil, and groundwater (GW). When MSW is placed in the landfill, MSW becomes subjected to GW underflow and rainfalls. This liquid contained in the waste becomes leachate during waste decomposition and percolation through the landfill body. Improperly designed or operated landfills have some impacts on the environment. These impacts are represented in gases and leachates which may migrate from the landfill if not controlled. These impacts result in spontaneous fires, explosions, vegetation damage, unpleasant odors, settlements, soil, and groundwater pollution. In developing countries, landfills usually become unsuccessful after a while in operation for many reasons including receiving medical, and hazardous waste which contains a dangerous substance, and an uncontrolled leachate collection system which may cause the percolation of leachate into the soil, and groundwater (GW). The primary objective of this study is to investigate the effect of acute contamination of groundwater quality by chloride, and other parameters as an indicator to assess such impact and identify its possible causes where one potential cause could be related to liner deterioration over time, and improper landfilling techniques. Chloride is usually considered as a tracer for GW contamination by leachate and is used to assess the effect of landfills on GW. The case study of this research is El-Sadat landfill which is the final disposal site for Gharbia governorate dedicated for them by Menofia governorate in 2001 for being the nearest desert area available close to Gharbia governorate.

Présentation étendue (EULC)