leachate Articles
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Advanced Oxidation Processes (AOPs) for reduction of organic pollutants in landfill leachate: a review
Uncontrolled municipal landfill leachate during landfilling can seriously pollute groundwater, surface water and soil. Over the past decades, a variety of Advanced Oxidation Processes (AOPs), primarily utilising hydroxyl radicals to effect water purification, have been frequently investigated for treatment of landfill leachate. This paper first summarises the typical characteristics of organic ...
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Impact of cemeteries on groundwater contamination by bacteria and viruses – a review
In the process of decomposition of a human body, 0.4–0.6 litres of leachate is produced per 1 kg of body weight. The leachate contains pathogenic bacteria and viruses that may contaminate the groundwater and cause disease when it is used for drinking. So far, this topic has been investigated in several regions of the world (mainly Brazil, Australia, the Republic of South Africa, ...
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Monitoring leachate composition at a municipal landfill site in New Delhi, India
Most of the landfills in developing countries do not have any liner at the base, or a drainage layer or a proper top cover, which results in the potential problem of groundwater/surface water contamination due to the leachate. Hence, to decide whether the leachate is to be collected and treated, or may be allowed to discharge into the adjoining soil or public sewer or surface waterbody, it is ...
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Application of leachate pollution indices for assessment of leachate pollution potential of landfills (a case study of an unlined landfill with lime sludge and fly ash)
Leachates from unlined landfills cause environmental degradation and health hazards due to resultant ground water pollution. Their pollution potential can be measured on a comparative scale using leachate pollution index (LPI). The selection of index involves 18 pollution parameters, their weightages and the sub–index values. The concentrations of pollutants are obtained from toxicity ...
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An investigation of the surface and groundwater leachate from an old waste disposal site at Mamak, Ankara, Turkey
Mamak solid waste disposal site covers an area of approximately 0.5 square kilometre and the amount of waste it holds is around 13 × 106 m?. The amount of leachate measured through a weir at the toe of the body of waste is 164,000 m3? per annum. It is calculated that approximately 130,000 m? of this amount directly comes from the waste. Owing to the retention of precipitation by wastes, it takes ...
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Geophysical and physicochemical characterization of organic waste contamination of hydrolithofacies in the coastal dumpsite of Akwa Ibom State, southern Nigeria
Geophysical and physicochemical methods were carried out to examine the effect of leachate on groundwater in a dumpsite location in Akwa Ibom State, Nigeria. This was done to ascertain the level of organic contamination in the wells located in the study area. The analysis of water samples from boreholes close to the dumpsite was done to constrain the interpretation of electrical resistivity ...
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Polycyclic aromatic hydrocarbons (PAH) in top soil, leachate and groundwater from Ruseifa solid waste landfill, Jordan
The distribution profiles and pathways of polynuclear aromatic hydrocarbons in the surroundings of Ruseifa landfill area in Jordan were investigated for surface sediments, leachate, and groundwater. The total concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in sediments ranged from 286 to 1704 ppm with an average value of 751 ppm. Meanwhile, concentrations of PAH in groundwater ranged ...
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Analysis of landfill components in estimating the percolated leachate to groundwater using the HELP model
Landfills are one of the groundwater pollution sources in Gaza Strip. This study focuses on two landfills operating in Gaza Strip; the first is Dear Al Balah landfill which has a lining system and the second landfill is Gaza landfill which does not have a lining system. The main objective of the present study is to assess the effect of landfill components on percolated leachate to groundwater ...
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Solid waste characterisation and the assessment of the effect of dumping site leachate on groundwater quality: a case study
In this study, the characterisation of the solid waste and the effect of the leachate from the major dumping site in Perungudi, Chennai city, on groundwater is investigated. Various physical and chemical parameters were estimated: this includes pH, total hardness, electrical conductivity, and total dissolved solids, major cations such as Ca2+, Mg2+, Na+, and K+, major anions such as NO32−, Cl−, ...
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Numerical modelling of the environmental impact of landfill leachate leakage on groundwater quality – a field application
Waste disposal facilities are mainly responsible for the gradual quality degradation of subsurface freshwater reservoirs. The main objective of this work is to identify the groundwater contamination risk due to potential leachate leakage and seepage beneath the municipal landfill of the City of Patras in Greece. A groundwater and leachate mass transport model of the underlying aquifer was ...
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Investigation on Potential Groundwater Impacts and Influence of Local Hydrogeology on Natural Attenuation of Leachate at a Municipal Landfill
The influence of local hydrogeology on natural attenuation of contaminants from landfill leachates in shallow aquifer underlying the active Olusosun landfill base in Lagos was investigated. In addition, the level of groundwater contamination in the vicinity of the landfill and of leachate migration pattern in groundwater down gradient of the landfill base was equally assessed. Landfill leachate ...
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Leachate Endanger Our Life
Leachate is toxic wastewater with a high concentration of COD, BOD, NH -N that results from solid waste handling processes, such as landfills, incineration plants and waste transfer stations. Containing inorganic and organic chemicals, heavy metals and pathogens, it has the potential to pollute groundwater, posing a significant risk to the environment and public health. Given its complex and ...
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Ontario Landfill Site - Case Study
A Texas based company with waste management sites around North America have installed electrical generation plants at various locations that use methane collected from the waste. The daily operation of these sites include the management of the leachate, a liquid waste by-product of decomposition, and the collection of gas for electricity production. This is typically carried out at multiple wells ...
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Assessing the potential risks of burial practices on groundwater quality in rural north-central Nigeria
Several cultures of north-central Nigeria do not use community cemeteries. Instead, human remains are buried in and around family compounds, often in shallow and sometimes unmarked graves. At several locations, graves and drinking water wells end up too close to be presumed environmentally safe. This paper reports findings of a pilot study that explored the potential for groundwater contamination ...
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Soil and microbial characterisation and microbial–mediated iron release nearby landfills in Northwest Florida, USA
In this study, the soil of 16 landfills from 15 Northwest Florida counties was characterised through sieve analysis. On the basis of plate counts, it was found that there were around 3.0 × 104 to 9.5 × 105 Colony–Forming Units (CFU) per gram of soil for the soil of Northwest Florida. Through Polymerase Chain Reaction (PCR) analysis, Bacillus subtilis, Bacillus cereus, Bacillus thuringiensis and ...
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Shallow groundwater surrounding the Likeng landfill, Guangzhou, China – major ions and elements indicating the contamination sources
An investigation of groundwater contamination around the Likeng landfill, Guangzhou, was carried out. Major ions and elements of 34 groundwater samples were measured, and the Piper trilinear diagram and expanded Durov diagram were used to analyze the chemical types and hydro-geochemical processes of the groundwater. End Member Mixing Analysis was used to find the types and sources of ...
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Landfill Leachate Sources and Treatment Options
What is leachate? In a lab, it is any liquid that extracts solids as it passes through matter. In a landfill, it is the water that enters the facility in a number of ways, passes through waste material on contact, contains a wide range of constituents, and must be addressed with a proper operations plan. Leachate treatment options and mitigation are one of the greatest costs for landfill ...
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Leachate Treatment
We pride ourselves in our membrane technology that effectively and reliably yields clean, reusable water. Our drive and dedication to clean industrial solutions has made us a top competitor in the industry, allowing us to apply our membrane technologies to many different fields. A typical sanitary landfill site When solid waste degrades and is soaked in precipitation, a black liquid called ...
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Identification of groundwater contamination zone around a reclaimed landfill using carbon isotopes
Chemical and isotopic analyses of groundwater from piezometers localized around a reclaimed landfill were performed in order to identify the boundaries of groundwater contamination zone. Spatial distribution of dissolved inorganic carbon (DIC) concentration and stable carbon isotopes in the groundwater was used to distinguish the piezometers localized within the contaminated aquifer. Background ...
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Contaminant migration in unsaturated porous media using X-ray computerized tomography (CT)
Landfills are usually located in unsaturated zones. Contaminant leaking can easily infiltrate groundwater through these porous media and contribute to groundwater pollution. The main objective of this work is to study the leachate migration in unsaturated porous media using X-ray computerized tomography (CT) and image-processing software. Silica sand and Yamazuna sand (collected from Japan) ...
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