Capture zone models of a multi-well system in aquifers bounded with regular and irregular inflow boundaries

Nagheli, Setareh; Samani, Nozar; Barry, David Andrew

doi:10.1016/j.hydroa.2020.100053

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…The efficiency of hydraulic barriers keeps increasing with the flow rate, as shown in Figure 5 and Table 3, approaching 100% of η Φ only for flow rates Q HB equal to 2 or 3 times the one that would have been needed according to Equation ( 1). This result contrasts with the common assumption that a well capture zone embracing the whole contaminated area is enough for a P&T to be effective, as reported in several references [26,46,[58][59][60]. Including solute transport in P&T system modelling is therefore of pivotal importance to design an effective containment measure.…”

Section: Resultsmentioning

confidence: 77%

A Quantitative Approach to Assessing the Technical and Economic Performance of Source Containment Options for Contaminated Aquifers

et al. 2021

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The containment of contaminant plumes to protect groundwater from pollution is recognized as a frequent need in brownfield redevelopment. Plume containment can be physical, with slurry walls, jet grouting etc., or hydraulic, with wells capturing the subsurface flow that crosses the contaminated front (Pump & Treat), or a combination of both types. The choice of the most suitable technique is a difficult task, since various aspects must be taken into consideration. In this paper, we present a framework for evaluating barriers in terms of effectiveness and efficiency, along with a simplified approach for the evaluation of capital and operational costs. The contaminant mass discharge escaping from the containment system is a robust indicator of its effectiveness, and can be derived from modelling results. The abstracted water flowrate is a key indicator of the efficiency and sustainability of each option, especially in the long term. The methodology is tested in a simplified case study and in a real one, highlighting the relevance of modelling results in guiding the choice and design of contaminant source containment systems.

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Section: Resultsmentioning

confidence: 77%

A Quantitative Approach to Assessing the Technical and Economic Performance of Source Containment Options for Contaminated Aquifers

et al. 2021

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“…Other method used to derive analytical solution to wedge‐shaped aquifers is the Laplace transform (Lin et al., 2018). Recently, more complicated aquifer's shapes, such as triangle‐shaped, annular wedge‐shaped, trapezoidal‐shaped, have been studied analytically (Asadi‐Aghbolaghi & Seyyedian, 2010; Kacimov et al., 2017; Leray et al., 2019; Mahdavi, 2019, 2022; Mahdavi & Yazdani, 2021; Nagheli et al., 2020; Zlotnik et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

The Method of Images Revisited: Approximate Solutions in Wedge‐Shaped Aquifers of Arbitrary Angle

Nikoletos,

Katsifarakis

2024

Water Resources Research

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This paper focuses on deriving new approximate analytical solutions in wedge‐shaped aquifers. The proposed methodology is applicable to any type of aquifer namely, leaky, confined and unconfined, under both steady state and transient flow conditions. By applying the method of images and separating the flow field into sections using physical arguments, approximate analytical expressions are obtained for the drawdown function, which in contrast to the conventional theory, are applicable to any arbitrary wedge angle. Moreover, the solutions fully observe the boundary conditions, while they preserve the continuity of the drawdown, which can be calculated directly at any point of the flow field. Nevertheless, comparison of the results of the new approximate analytical solutions to numerical ones, has been considered necessary to check their validity. MODFLOW, a well‐known numerical tool is used to calculate the numerical results. The discrepancies between the numerical results and those of the approximate analytical solution are negligible. The main advantages of the proposed methodology are the following: (a) The model needs only finite number of terms compared to conventional analytical and numerical solutions that involve infinite series, (b) The computational load is low, so it can be easily used in conjunction with meta‐heuristic algorithms to solve groundwater resources optimization problems, (c) Stream depletion rate can be calculated rather accurately and (d) The method is applicable to related flow problems.

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Integrated anaerobic–aerobic biodegradation of mixed chlorinated solvents by electrolysis coupled with groundwater circulation in a simulated aquifer

Cai

Shi

Yuan

et al. 2022

Environ Sci Pollut Res

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Capture zone models of a multi-well system in aquifers bounded with regular and irregular inflow boundaries

Cited by 7 publications

References 34 publications

A Quantitative Approach to Assessing the Technical and Economic Performance of Source Containment Options for Contaminated Aquifers

A Quantitative Approach to Assessing the Technical and Economic Performance of Source Containment Options for Contaminated Aquifers

The Method of Images Revisited: Approximate Solutions in Wedge‐Shaped Aquifers of Arbitrary Angle

Integrated anaerobic–aerobic biodegradation of mixed chlorinated solvents by electrolysis coupled with groundwater circulation in a simulated aquifer

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