Prediction of overland flow and seepage zones associated with the interaction of multiple infiltration devices (cascading infiltration devices)

Antia, David D. J.

doi:10.1002/hyp.6852

Cited by 11 publications

(53 citation statements)

References 29 publications

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“…Studies [1,2] of drainage failure associated with a Sustainable Urban Drainage Scheme (SUDS (Appendix 1, A.1)) at Greenloaning, Perthshire, Scotland, UK (Appendix 1, A.2), have identified that the infiltrating water is held in a sealed groundwater mound which does not dissipate over time into the underlying water table. Drainage failure events result [1][2][3] in high volume, high flow rate, overland flow ( Figure 1), and can lead to down slope flooding.…”

Section: Introductionmentioning

confidence: 99%

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Antia¹

2009

Sustainability

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A groundwater mound (or pressure mound) is defined as a volume of fluid dominated by viscous flow contained within a sediment volume where the dominant fluid flow is by Knudsen Diffusion. High permeability self-sealing groundwater mounds can be created as part of a sustainable urban drainage scheme (SUDS) using infiltration devices. This study considers how they form, and models their expansion and growth as a function of infiltration device recharge. The mounds grow through lateral macropore propagation within a Dupuit envelope. Excess pressure relief is through propagating vertical surge shafts. These surge shafts can, when they intersect the ground surface result, in high volume overland flow. The study considers that the creation of self-sealing groundwater mounds in matrix supported (clayey) sediments (intrinsic permeability = 10 -8 to 10 -30 m 3 m -2 s -1 Pa -1 ) is a low cost, sustainable method which can be used to dispose of large volumes of storm runoff (<20→2,000 m 3 /24 hr storm/infiltration device) and raise groundwater levels.However, the inappropriate location of pressure mounds can result in repeated seepage and ephemeral spring formation associated with substantial volumes of uncontrolled overland flow. The flow rate and flood volume associated with each overland flow event may be substantially larger than the associated recharge to the pressure mound. In some instances, the volume discharged as overland flow in a few hours may exceed the total storm water recharge to the groundwater mound over the previous three weeks. Macropore modeling is used within the context of a pressure mound poro-elastic fluid expulsion model in order to analyze this phenomena and determine (i) how this phenomena can be used to extract large volumes of stored filtered storm water (at high flow rates) from within a self-sealing high permeability pressure mound and (ii) how self-sealing pressure mounds (created using storm OPEN ACCESSSustainability 2009, 1 856 water infiltration) can be used to provide a sustainable low cost source of treated water for agricultural, drinking, and other water abstraction purposes.

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Section: Introductionmentioning

confidence: 99%

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Antia¹

2009

Sustainability

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“…This difference has significant implications for PRB design, particularly in impermeable or low permeability sediments. Static groundwater mounds are common in low permeability sediments [24][25][26][27]. When surface water runoff is directed to infiltration devices in impermeable/low permeability sediments, the infiltration devices will frequently contain static (standing) water between recharge events [24][25][26][27].…”

Section: Discussionmentioning

confidence: 99%

“…Static groundwater mounds are common in low permeability sediments [24][25][26][27]. When surface water runoff is directed to infiltration devices in impermeable/low permeability sediments, the infiltration devices will frequently contain static (standing) water between recharge events [24][25][26][27]. The air-water contact represents the upper surface of a perched (self-sealing) ground water mound which extends spatially into the surrounding sediment [24][25][26][27].…”

Section: Discussionmentioning

confidence: 99%

“…When surface water runoff is directed to infiltration devices in impermeable/low permeability sediments, the infiltration devices will frequently contain static (standing) water between recharge events [24][25][26][27]. The air-water contact represents the upper surface of a perched (self-sealing) ground water mound which extends spatially into the surrounding sediment [24][25][26][27]. Consequently, placement of n-ZVM in the infiltration devices below the air-water contact will allow modification of the Eh and pH of the static ground water mound by static diffusion.…”

Section: Discussionmentioning

confidence: 99%

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Modification of Aquifer Pore-Water by Static Diffusion Using Nano-Zero-Valent Metals

Antia¹

2011

Water

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Sixteen static diffusion reactors containing n-ZVM (Fe 0 , Cu 0 , Al 0 ) establish a common equilibrium redox (Eh-pH) trajectory which is directly linked to the aquifer pore volume, volume of injected n-ZVM, throughflow rate within the aquifer and time. The effect of NaCl and Ca-montmorillonite on the trajectory is considered. The trajectory can be directly linked to TDS (EC) and to the equilibrium removal of contaminants. In each example, the progressive oscillation between reduction and oxidation reactions (including Fenton reactions) creates the catalytic nuclei (and redox environment) required for the decomposition of organic pollutants and their reconstruction as simple alkanes and oxygenates.

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“…The storm runoff water may be contaminated by nitrates (e.g., agricultural runoff), hydrocarbons/organic chemicals (road runoff/chemical runoff), salt (road runoff/irrigation project runoff) and metals (e.g., road runoff/industrial runoff/mining runoff) [92,94]. The infiltrating water will either flow directly into the water table [89,90], or into the water table via a descending groundwater mound [1,95], or into the water table by lateral propagation of a perched groundwater mound [96], or will form a perched sealed groundwater mound [1,2]. Surface runoff will form a perched water table confined to the upper layers of the topsoil [8,97], which may also intersect and enter the infiltration device.…”

Section: Remediation Of Storm Runoff/overland Flowmentioning

confidence: 99%

Sustainable Zero-Valent Metal (ZVM) Water Treatment Associated with Diffusion, Infiltration, Abstraction, and Recirculation

Antia¹

2010

Sustainability

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Socio-economic, climate and agricultural stress on water resources have resulted in increased global demand for water while at the same time the proportion of potential water resources which are adversely affected by sodification/salinisation, metals, nitrates, and organic chemicals has increased. Nano-zero-valent metal (n-ZVM) injection or placement in aquifers offers a potential partial solution. However, n-ZVM application results in a substantial reduction in aquifer permeability, which in turn can reduce the amount of water that can be abstracted from the aquifer. This study using static diffusion and continuous flow reactors containing n-ZVM and m-ZVM (ZVM filaments, filings and punchings) has established that the use of m-ZVM does not result in a reduction in aquifer permeability. The experimental results are used to design and model m-ZVM treatment programs for an aquifer (using recirculation or static diffusion). They also provide a predictive model for water quality associated with specific abstraction rates and infiltration/injection into an aquifer. The study demonstrates that m-ZVM treatment requires 1% of the weight required for n-ZVM treatment for a specific flow rate. It is observed that 1 t Fe 0 will process 23,500 m 3 of abstracted or infiltrating water. m-ZVM is able to remove >80% of nitrates from flowing water and adjust the water composition (by reduction) in an aquifer to optimize removal of nitrates, metals and organic compounds. The experiments demonstrate that ZVM treatment of an aquifer can be used to reduce groundwater salinity by 20 -> 45% and that an aquifer remediation program can be designed to desalinate an aquifer. Modeling indicates that widespread application of m-ZVM water treatment may reduce global socio-economic, climate and agricultural stress on water resources. The rate of oxygen formation during water reduction OPEN ACCESSSustainability 2010, 2 2989[by ZVM (Fe 0 , Al 0 and Cu 0 )] controls aquifer permeability, the associated aquifer pH, aquifer Eh and the degree of water treatment that occurs.

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Prediction of overland flow and seepage zones associated with the interaction of multiple infiltration devices (cascading infiltration devices)

Cited by 11 publications

References 29 publications

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Formation and Control of Self-Sealing High Permeability Groundwater Mounds in Impermeable Sediment: Implications for SUDS and Sustainable Pressure Mound Management

Modification of Aquifer Pore-Water by Static Diffusion Using Nano-Zero-Valent Metals

Sustainable Zero-Valent Metal (ZVM) Water Treatment Associated with Diffusion, Infiltration, Abstraction, and Recirculation

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