Flow of dispersed particles through porous media — Deep bed filtration

Zamani, Amir; Maini, Brij B.

doi:10.1016/j.petrol.2009.06.016

Cited by 213 publications

(130 citation statements)

References 57 publications

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“…Thus, clogging by micro-sized particles (e.g., particulate organic matter) in combination with atmospheric air intrusion was considered to be the main factor in reducing the hydraulic conductivity. The clogging of the aquifer also depends on the concentration and type of micro-sized particles (Zamani and Maini, 2009). As stated by Okubo and Matsumoto (1983), the concentration should be below 2 mg L −1 to sustain a high infiltration capacity during long inundation periods.…”

Section: Clogging and Self-cleansing In Rbfmentioning

confidence: 99%

“…During deep bed filtration, the particles in suspension to be removed are considerably smaller than the average size of the aquifer pores (Brunke, 1999;Sutherland, 2008;Zamani and Maini, 2009). Therefore, particle separation mainly occurs due to selective straining within the porous media through sedimentation, interception, inertial forces or Brownian motion (Sutherland, 2008).…”

Section: Mechanisms Of Water Quality Improvement In Rbf Systemsmentioning

confidence: 99%

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Riverbank filtration for the treatment of highly turbid Colombian rivers

Gutiérrez

Halem

Rietveld

2017

Drink. Water Eng. Sci.

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Abstract. The poor quality of many Colombian surface waters forces us to seek alternative, sustainable treatment solutions with the ability to manage peak pollution events and to guarantee the uninterrupted provision of safe drinking water to the population. This review assesses the potential of using riverbank filtration (RBF) for the highly turbid and contaminated waters in Colombia, emphasizing water quality improvement and the influence of clogging by suspended solids. The suspended sediments may be favorable for the improvement of the water quality, but they may also reduce the production yield capacity. The cake layer must be balanced by scouring in order for an RBF system to be sustainable. The infiltration rate must remain high enough throughout the river-aquifer interface to provide the water quantity needed, and the residence time of the contaminants must be sufficient to ensure adequate water quality. In general, RBF seems to be a technology appropriate for use in highly turbid and contaminated surface rivers in Colombia, where improvements are expected due to the removal of turbidity, pathogens and to a lesser extent inorganics, organic matter and micro-pollutants. RBF has the potential to mitigate shock loads, thus leading to the prevention of shutdowns of surface water treatment plants. In addition, RBF, as an alternative pretreatment step, may provide an important reduction in chemical consumption, considerably simplifying the operation of the existing treatment processes. However, clogging and self-cleansing issues must be studied deeper in the context of these highly turbid waters to evaluate the potential loss of abstraction capacity yield as well as the development of different redox zones for efficient contaminant removal.

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Section: Clogging and Self-cleansing In Rbfmentioning

confidence: 99%

Section: Mechanisms Of Water Quality Improvement In Rbf Systemsmentioning

confidence: 99%

Riverbank filtration for the treatment of highly turbid Colombian rivers

Gutiérrez

Halem

Rietveld

2017

Drink. Water Eng. Sci.

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“…Since constant rate filtration and incompressible flow are assumed for a flat filter medium, the velocity u x can be considered as constant. For the so-called capturing term on the right-hand side of the equation, there exists a wide range of models in the literature [23][24][25]. In this work, the simplest deposition model is used: The capturing rate is assumed to be proportional to the fluid velocity and the concentration of dissolved dust, i.e.…”

Section: Combined Depth and Cake Filtration Modelmentioning

confidence: 99%

“…In the literature, this coefficient is often called filter coefficient [20,23]. It is assumed that the capturing coefficients of different particle sizes are independent of each other.…”

Section: Combined Depth and Cake Filtration Modelmentioning

confidence: 99%

Combined Depth and Cake Filtration Model Coupled with Flow Simulation for Flat and Pleated Filters

2017

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Filtration processes characterized by initial depth filtration, followed by a stage during which the cake acts as both a depth and surface filtering medium are studied. Such phenomena can occur especially for polydisperse dust. Based on onedimensional depth filtration modeling, a combined depth and cake filtration model is formulated and coupled with the fluid flow. The evolution of flow resistivity and filtration efficiencies is investigated in the case of relatively dilute suspensions and constant flow rates. Numerical simulations of single-pass experiments are performed for both flat and pleated filter media. The model presented here is able to predict a nonlinear pressure drop for incompressible filter cakes due to the reduction of pore volume by particle deposition in the cake region.

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“…Much of existing data on filtration and sedimentation focuses on macro-scale phenomena, e.g. Zamani and Maini, 2009 and references therein. Little research has been documented regarding the use of micro-scale information gathered, for example, using X-ray micro-tomography (XMT), which can be subsequently coupled to more detailed simulation techniques, for example, based on the lattice Boltzmann method (LBM).…”

Section: Introductionmentioning

confidence: 99%

Studies for the development of a virtual permeameter

Caulkin

Islam

Jia

et al. 2014

Computers & Chemical Engineering

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A systematic analysis on the use of the lattice Boltzmann method (LBM) for predicting the permeability of packed beds is presented. A filtration rig is used to obtain permeability measurements of beds of glass beads, sand and crushed minerals. Subsequently, X-ray microtomography is employed to image bed samples for use as input to LBM calculations. Uncertainties in accuracy and reliability of predictions arising from pixel resolution, sample size and digitisation errors in the simulations are evaluated through sensitivity studies and assessments of the representativeness of the bed samples. For beds of spherical and nearspherical particles, any bed sample is capable of providing reproducible and reliable simulation results provided that the particles are adequately resolved within an LBM simulation . For more complex beds of polymorphous, polydisperse particles estimation of the permeability of representative samples of the entire bed is required before average results comparable with data are obtained.

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Flow of dispersed particles through porous media — Deep bed filtration

Cited by 213 publications

References 57 publications

Riverbank filtration for the treatment of highly turbid Colombian rivers

Riverbank filtration for the treatment of highly turbid Colombian rivers

Combined Depth and Cake Filtration Model Coupled with Flow Simulation for Flat and Pleated Filters

Studies for the development of a virtual permeameter

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