Method of evaluating the impact of landfill leachate on groundwater quality

Abstract

Closed municipal and industrial waste landfill sites create potential hazard of ground water pollution. Pollutants that occur in leachate infiltrate to the soil substratum, where they are carried to in underground water. A municipal waste landfill substratum can be used for elimination of pollutants contained in leachates. Model research was performed with the use of a sand bed and artificially prepared leachates. Efficiency of filtration in a bed of defined thickness was assessed based on change of COD value. Results of the model tests have indicated that the mass of pollutants contained in leachate filtered through porous ground layer depends on the mass of supplied pollutants, intensity of supplied leachate, and layer thickness. Increase of the mass of pollutants supplied to a unit area of ground layer causes reduction of the relative value of COD mass. The method of evaluation of quality of water seeping through the aeration layer presented in this paper allows for estimation of the flowing out pollutants mass. Based on the test results obtained, efficiency of purification in the aeration zone can be assessed; likewise, safe thickness of the filtration layer under the landfill site can be designed.

Environmental impacts, pollution sources and pathways of spent lithium-ion batteries

“…biogas), leachate and fires 77,78 . The extent of pollution from a site depends upon location, waste composition and age, and geo-climatic conditions 51,[79][80][81] . However, in the future it's possible that landfills may be a place of valuable resources for urban miningthe sink of the rare and needed metals that can be extracted without actual mining.…”

Evaluation of Water Chemistry in the Environs of Municipal Solid Waste Disposal Site, Jawaharnagar, Hyderabad, Telangana, India.

“…The penetration of pollutants from these sources to pore water depends on many factors. Szymański et. al., (2018) in their experiment inferred that the propagation of pollutants contained in leachate lter through porous ground layer which depends on the mass of supplied pollutants, the intensity of supplied leachate, and layer thickness.…”

Waste Disposal Practices and its Environmental Implications

“…While 6.5%, 7.4%, 5.6% and 0.5% are not aware that flooding, water pollution, disease, and disruption of Environmental aesthetic beauty can be caused respectively by indiscriminate dumping. Despite this awareness by a vast majority there is still a need to bring to the fore, the findings by (Szymanski et al, 2018) that discovered that improper waste management has caused bad odour, food contamination, breeding of mosquitoes, cockroaches and flies leading to disease epidemics such as malaria and cholera. Dumping of waste on water bodies can also be toxic to fishes and if such fishes are consumed can lead to food poisoning.…”