Attenuation of landfill leachate at two uncontrolled landfills

Lee, Jin‐Yong; Cheon, Jeong-Yong; Kwon, Hyung-Pyo; Yoon, Heesung; Lee, Seong‐Sun; Kim, Jong-Ho; Park, Joung-Ku; Kim, Chang-Gyun

doi:10.1007/s00254-006-0353-7

Cited by 21 publications

(15 citation statements)

References 19 publications

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“…Geological logging data obtained during the installation of shallow groundwater monitoring wells revealed that there are three simple hydrogeological layers in the open field (Lee et al, 2006a(Lee et al, , 2007a. The uppermost layer is mainly comprised of sandy soil, which readily receives percolation from site rainfall.…”

Section: Introductionmentioning

confidence: 97%

“…In a preliminary analysis of this study (August 2004), the leachate emanating from the landfill contained BOD 81.2 mg/L, COD Cr 137.1 mg/L, COD Mn 75.2 mg/L, NO 3 -N 1.61 mg/L, NO 2 -N 10.1 mg/L, Fe 13.49 mg/L and NH 4 -N 103.85 mg/L. Thus, it was expected that ammonia might be a considerable problem to groundwater resources in this area (Lee et al, 2006a).…”

Section: Introductionmentioning

confidence: 98%

“…Below the 0.5 m thick silt layers, there is a hard rock layer with few fractures. The permeability of this hard rock layer is estimated to be in the order of 10 -5~1 0 -6 cm/s (Lee et al, 2006a). The lower permeability would impede groundwater flow in this layer.…”

Section: Introductionmentioning

confidence: 99%

“…Until 1990, most landfills in Korea had been constructed without suitable bottom liners or a leachate collecting system in Korea (Lee et al, 2006a). When landfills are constructed in a recharge area such as in mountainous valleys, the leachate emanating from the uncontrolled landfills poses a considerable threat to groundwater resources in downgradient residential areas (Lee et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways

2008

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When leachate emanates from an uncontrolled landfill, it poses a threat to the groundwater resources of the surrounding areas. Thus, regular monitoring is essential to protect the groundwater from contamination. In this study, an evaluation is carried out on the quality of groundwater affected by the leachate deriving from an uncontrolled landfill situated in a valley. A nonparametric trend analysis revealed that alkalinity levels were increasing at most monitoring wells, indicating the continuous increase of biodegradation of organic matter. According to a cluster analysis, similar chemical groups developed in a parallel direction to that of groundwater flow. Each group indicates different redox levels and various degrees of landfill leachate effect. This geographical distribution of groups with similar chemical properties is closely associated with local groundwater flow and land surface permeability. However, an evaluation of the effect of recharge flow from the surrounding mountains and of the vertical component of groundwater in the recharge area is essentially required in order to enhance our understanding of redox zonation or distribution of groundwater quality affected by the landfill leachate.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways

2008

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“…The contaminants present within landfill leachate and the extent of leachate migration are dependent on numerous factors such as age of the landfill, landfill content, geological setting, environmental setting, attenuation and dilution. When constructed in recharge areas such as in upper catchment areas or valleys, the leachate emanating from uncontrolled landfills pose a considerable threat to groundwater and surface water resources in downgradient residential and agricultural areas (Lee et al 2006). The World Health Organisation (2006) considers waste disposal to landfill to be responsible for pollution of groundwater resources under a wide range of conditions around the globe.…”

Section: Introductionmentioning

confidence: 99%

Field Measurement of Fluorescent Dissolved Organic Material as a Means of Early Detection of Leachate Plumes

Graham¹,

Baker²,

Andersen³

et al. 2015

Water Air Soil Pollut

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Early detection of landfill leachate plumes may minimise aquifer degradation and financial expenditure for the landfill operator. Current methods of landfill leachate monitoring typically include analysis of groundwater field parameters such as electrical conductivity (EC), coupled with laboratory analysis of a selection of major cations and anions. In many instances, background influences can mask the impact of leachate, which only becomes apparent once a significant impact has occurred. Here, we investigate the potential for changes in fluorescent dissolved organic material (FDOM) concentration to be used as an indicator of leachate impact. The research was undertaken in a fractured rock aquifer located downgradient of a local government-operated putrescible landfill in Central West NSW, Australia. Field measurement of groundwater FDOM was undertaken using an in situ fluorometer (FDOM probe) which provides a relative measurement of FDOM. To quantify the FDOM values, a bench fluorescence spectrophotometer was used to collect excitation/emission spectra. A plume of elevated FDOM and EC levels within the fractured rock system up to 600 m downgradient of the landfill was identified, whereas analysis of major cations and anions from boreholes within the plume did not detect leachate impacts above background. Excitation/emission matrices of groundwater from these locations confirmed that similar fluorescence signatures to those collected from the landfill were present. Photodegradation experiments were conducted to determine if fluorescent whitening agents (FWAs) were a component of the fluorescence signal. Observed photodegradation of 40 % compared to background (8 %) suggests that a component of the fluorescence signal can be attributed to FWAs. FDOM in groundwater therefore provides an indicator of lowlevel (up to 98 % dilution) leachate influence, and the identification of FWAs within groundwater can be considered confirmation of a leachate signal.

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A model for prioritizing landfills for remediation and closure: A case study in Serbia

Ubavin

Agarski

Maoduš

et al. 2017

Integr Envir Assess & Manag

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The existence of large numbers of landfills that do not fulfill sanitary prerequisites presents a serious hazard for the environment in lower income countries. One of the main hazards is landfill leachate that contains various pollutants and presents a threat to groundwater. Groundwater pollution from landfills depends on various mutually interconnected factors such as the waste type and amount, the amount of precipitation, the landfill location characteristics, and operational measures, among others. Considering these factors, lower income countries face a selection problem where landfills urgently requiring remediation and closure must be identified from among a large number of sites. The present paper proposes a model for prioritizing landfills for closure and remediation based on multicriteria decision making, in which the hazards of landfill groundwater pollution are evaluated. The parameters for the prioritization of landfills are the amount of waste disposed, the amount of precipitation, the vulnerability index, and the rate of increase of the amount of waste in the landfill. Verification was performed using a case study in Serbia where all municipal landfills were included and 128 landfills were selected for prioritization. The results of the evaluation of Serbian landfills, prioritizing sites for closure and remediation, are presented for the first time. Critical landfills are identified, and prioritization ranks for the selected landfills are provided.

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Attenuation of landfill leachate at two uncontrolled landfills

Cited by 21 publications

References 19 publications

Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways

Statistical evaluation of groundwater quality around an uncontrolled landfill: implication for plume migration pathways

Field Measurement of Fluorescent Dissolved Organic Material as a Means of Early Detection of Leachate Plumes

A model for prioritizing landfills for remediation and closure: A case study in Serbia

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