The impact of storm events on a riverbed system and its hydraulic conductivity at a site of induced infiltration

Levy, Jonathan; Birck, Matthew D.; Mutiti, Samuel; Kilroy, Kathryn C.; Windeler, Britton; Idris, Ominigho; Allen, Lauren N.

doi:10.1016/j.jenvman.2011.03.017

Cited by 46 publications

(28 citation statements)

References 32 publications

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“…In these instances, flood waves will more easily be able to resuspend and remove the clogging particles, thereby regenerating bed infiltration rates to some degree. Levy et al (2011) estimated a recovery of the hydraulic conductivity by a factor of 1.5 (from 31 to 47 % compared to the hydraulic conductivity of the media before clogging).…”

Section: Clogging and Self-cleansing In Rbfmentioning

confidence: 99%

“…Hubbs (2006b) reported a minimum shear stress (during low-flow conditions) of 0.2 N m −2 and a maximum shear stress of 9.16 N m −2 (during high-flow conditions) in the Ohio River at Louisville, Kentucky. While flood events may stimulate riverbed renewal by streambed scouring as a result of shear forces, lowflow periods may promote the sedimentation of suspended solids at the riverbed (Levy et al, 2011;Stuyfzand et al, 2006). However, Schubert (2002) stated that flood events might also induce riverbed clogging due to the higher concentration of suspended solids and a higher gradient between the river level and the water table of the aquifer.…”

Section: Interface Renewal By Scouringmentioning

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: Interface Renewal By Scouringmentioning

confidence: 99%

Riverbank filtration for the treatment of highly turbid Colombian rivers

Gutiérrez

Halem

Rietveld

2017

Drink. Water Eng. Sci.

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“…As the streambed K v measurements are a point measurement in space, and the measurements during different sampling times were not carried out exactly at the same location, there is the risk that temporal variability of streambed K v at the same location may not be entirely accurate and has some uncertainty, as small local heterogeneity may produce greater changes of streambed K v . Nevertheless, many studies have also stated that temporal variability in K v value should be predominantly associated with several factors, including erosion/deposition process, bioturbation, porosity, clogging, and changes in water viscosity [5,14,21]. These mechanisms can act together, therefore a better understanding of these hydrological environment still requires research.…”

Section: Temporal Variation Of Streambed K V and Grain Sizementioning

confidence: 99%

Spatial and Temporal Variations of Streambed Vertical Hydraulic Conductivity in the Weihe River, China

Wang

Song

Zhang

et al. 2016

Water

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This study demonstrates the spatial and temporal variations of streambed vertical hydraulic conductivity K v from October 2011 to November 2014 along the Weihe River, the largest tributary of the Yellow River. The streambed K v values of a total number of 385 locations from five test sites were estimated on the basis of in situ falling-head standpipe permeameter tests. The difference of K v values for all test locations reaches five orders of magnitude with a range from 5.87E-04 to 61.3 m/d and a median value of 1.62E-01 m/d. The streambed K v values are neither normally nor log-normally distributed, but display significant spatial variability among the five test sites. The highest K v values occur at the site with mainly sandy sediment, while the K v values at the other four sites with mainly silt-clay sediment are relatively close and have less variability than those at the sandy sediment site. The median K v values from all of the sites exhibit no statistically significant temporal trends. However, the median K v values indeed show temporal variations that might be influenced by changes in silt-clay content of the sediment, especially for the sandy sediment site and the combined data from all sites. Weak evidence demonstrates that streambed K v values decrease with depth.

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“…Seepage meters have measured the flux between ground-water and streams (e.g., Cey et al 1998) and lakes (e.g., Woessner and Sullivan 1984;Shaw and Prepas 1990). When using seepage meters in streams, care must be taken to protect the bags from head loss due to flowing water over the bags (Murdoch and Kelly 2003;Libelo and MacIntyre 1994;Levy et al 2011).…”

Section: Small-scale and Hydrometric Measurementsmentioning

confidence: 99%

Review: Groundwater management and groundwater/surface-water interaction in the context of South African water policy

Levy

2011

Hydrogeol J

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Groundwater/surface-water interaction is receiving increasing focus in Africa due to its importance to ecologic systems and sustainability. In South Africa's 1998 National Water Act (NWA), water-use licenses, including groundwater, are granted only after defining the Reserve, the amount of water needed to supply basic human needs and preserve some ecological integrity. Accurate quantification of groundwater contributions to ecosystems for successful implementation of the NWA proves challenging; many of South Africa's aquifers are in heterogeneous and anisotropic fractured-rock settings. This paper reviews the current conceptualizations and investigative approaches regarding groundwater/surface-water interactions in the context of South African policies. Some selected pitfall experiences are emphasized. The most common approach in South Africa is estimation of average annual fluxes at the scale of fourth-order catchments (~500 km 2 ) with base flow separation techniques and then subtracting the groundwater discharge rate from the recharge rate. This approach might be a good start, but it ignores spatial and temporal variability, potentially missing local impacts associated with production-well placement. As South Africa's NWA has already been emulated in many countries including Zambia, Zimbabwe and Kenya, the successes and failures of the South African experience dealing with the groundwater/surface-water interaction will be analyzed to guide future policy directions.

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The impact of storm events on a riverbed system and its hydraulic conductivity at a site of induced infiltration

Cited by 46 publications

References 32 publications

Riverbank filtration for the treatment of highly turbid Colombian rivers

Riverbank filtration for the treatment of highly turbid Colombian rivers

Spatial and Temporal Variations of Streambed Vertical Hydraulic Conductivity in the Weihe River, China

Review: Groundwater management and groundwater/surface-water interaction in the context of South African water policy

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