Investigative strategies and risk assessment of old unlined municipal solid waste landfills

Hoehn, E.; Johnson, C. Annette; Huggenberger, Peter; Amirbahman, Aria; Peter, Anita; Zweifel, Hans-Rudolf

doi:10.1177/0734242x0001800609

Cited by 10 publications

(3 citation statements)

References 23 publications

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“…There has been a limited use of isotope tracers in municipal solid wastes. Hoen et al (2000) examined 10 B/ 11 B ratios. Maloszewski et al (1995) Laboratories Inc, product code DLM-4-99-1000) was added to tap water in a 397 L input tank.…”

Section: Deuterium Oxide (D 2 O)mentioning

confidence: 99%

Multiple-tracer tests for contaminant transport process identification in saturated municipal solid waste

et al. 2015

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Two column tests were performed in conditions emulating vertical flow beneath the leachate table in a biologically active landfill to determine dominant transport mechanisms occurring in landfills. An improved understanding of contaminant transport process in wastes is required for developing better predictions about potential length of the long term aftercare of landfills, currently measured in timescales of centuries. Three tracers (lithium, bromide and deuterium) were used. Lithium did not behave conservatively. Given that lithium has been used extensively for tracing in landfill wastes, the tracer itself and the findings of previous tests which assume that it has behaved conservatively may need revisiting.The smaller column test could not be fitted with continuum models, probably because the volume of waste was below a representative elemental volume. Modelling compared advection-dispersion (AD), dual porosity (DP) and hybrid AD-DP models. Of these models, the DP model was found to be the most suitable. Although there is good evidence to suggest that diffusion is an important transport mechanism, the breakthrough curves of the different tracers did not differ from each other as would be predicted based

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Section: Deuterium Oxide (D 2 O)mentioning

confidence: 99%

Multiple-tracer tests for contaminant transport process identification in saturated municipal solid waste

et al. 2015

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“…In the fourth, methane phase, landfill matures i.e. comes to balancing anaerobic process in which a relatively equal amounts of CO 2 and CH 4 are released [21]- [23]. The objective of this study was to evaluate the effects of pollutants from the leachate of informal dumps on surface and ground waters in their surroundings and in view of the complexity of the problem (due to a permanent emission of the pollutants from the leachate of illegal waste landfills as well as from the industrial waste deposits, that impact the quality of surface and ground waters) to propose possible steps for reduction of the existing pollution and prevention of future pollution.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Leachate on the Quality of Surface and Groundwater and Proposal of Measures for Pollution Remediation

Dervišević¹,

Đokić²,

Elezović³

et al. 2016

JEP

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Direct discharge of municipal and industrial waste waters and leachate (originating from the illegal landfills) into recipients without prior purification is unfortunately very common practice in the region of northern Kosovo. In addition, irresponsible and incorrect selection of sites for industrial and municipal dumps, which are often located in vicinity or on actual river banks, contributes significantly to environmental pollution. Analysis of the leachate from such sites was done by direct sampling and by using TCLP (Toxicity Characteristic Leashing Procedures) method. Based on the analysis of physicochemical parameters of the filtrated water from the sites Žitkovac, Grabovac and Balaban and analysis of the samples of surface water and groundwater from the site Grabovac, possible steps for removal and reduction of the existing pollution were proposed. Potential permanent solution in form of purification of municipal and industrial waste waters as well as leachate from illegal landfills was suggested. The potential implementation of remediation with a unified system for water purification, by using Membrane Bio Reactor (MBR), which includes the process of stabilization/solidification of a residual sludge, would have as an end product a neutral powder material completely safe for the environment, suitable for a variety of applications.

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“…2000; Brun and Engesgaard 2002). Continuous monitoring, both at the surface and underground, is therefore required to satisfy the risk assessment of landfill leachate (Hoehn et al. 2000).…”

Section: Introductionmentioning

confidence: 99%

Application of geophysical monitoring techniques as aids to probabilistic risk‐based management of landfill sites

Ferrier¹,

Frostick²,

Splajt³

2009

Geographical Journal

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Increasingly stringent regulatory regimes, in conjunction with landfill development in environmentally sensitive locations and the large number of abandoned landfill sites, are significantly increasing the responsibilities of local authorities and environmental agencies. These responsibilities include the identification and/or monitoring of: locations of contaminated land; boundaries of waste sites; nature of the landfill content; location, extent, content and depth of closed landfill sites; leachate plumes escaping from both operational and closed sites and the performance of landfill liners. Probabilistic risk based modelling is a standard methodology for monitoring and managing the environmental impact of landfill sites. A critical problem in the implementation of probabilistic risk based modelling is the large uncertainty in the shallow geology, internal structure and leachate distribution of landfills caused by the severe lack of both surface and subsurface information from within and outside the landfill site. The utility of two non‐invasive ground based geophysical monitoring techniques, ground penetrating radar and reflectance spectroscopy, as aids to characterising the three‐dimensional structure and distribution of leachate within a landfill has been investigated. Strong correlations between red edge inflection position and chlorophyll and metal concentration have been demonstrated from grassland species affected by leachate contamination of the soil adjacent to the landfill study site. The results of this study have demonstrated how recent advances in equipment, techniques and software mean that field‐based reflectance spectroscopy and Ground Penetrating Radar can now provide environmental scientists with cost‐effective, rapid techniques to characterise landfill sites in three dimensions, aid landfill managers in positioning additional boreholes and field sampling surveys, and provide data as inputs to leachate migration modelling.

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Investigative strategies and risk assessment of old unlined municipal solid waste landfills

Cited by 10 publications

References 23 publications

Multiple-tracer tests for contaminant transport process identification in saturated municipal solid waste

Multiple-tracer tests for contaminant transport process identification in saturated municipal solid waste

The Impact of Leachate on the Quality of Surface and Groundwater and Proposal of Measures for Pollution Remediation

Application of geophysical monitoring techniques as aids to probabilistic risk‐based management of landfill sites

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