Retarding contaminant migration through porous media using inclined barrier walls

Allam, Ayman; Helal, Esam; Mansour, Mahmoud M.

doi:10.2478/johh-2019-0020

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…Consequently, the ADWR process at the DRPS operates in the absence of assignable causes and is "in control and capable" of producing water with respect to all examined WQPs except for the TN. This exception occurs because out of the 1000 samples, approximately 220 are expected to violate the These results support the fact that many agricultural drains in Egypt receive significant polluted agricultural and sewage effluents (Allam et al, 2019). Figure 6 presents the non-parametric process capability charts for COD as an example of the nonparametric process capability analysis performed on nonnormal WQPs.…”

Section: Parametric Process Capability For Delengat Pump Stationmentioning

confidence: 55%

“…Unfortunately, this option has experienced significant challenges in sustaining, rather than improving, the current reuse level (MWRI, 2008). Undoubtedly, the drainage water reuse processes accompanied by many of challenges, but the most important and complex challenge is the significant amount of non-point source pollution received by the Egyptian irrigation and drainage network (Allam et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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A comprehensive management model to maximize the benefits of agriculture drainage water reuse

Helal

Shaban

El‐Karim

et al. 2021

Water Environment Research

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Water scarcity in Egypt is an escalating challenge due to the ever-increasing water demands and limited resources. Economically, agricultural drainage water reuse (ADWR) in irrigation is an essential option to cope with freshwater shortage. However, it requires environmentally sound management to minimize possible risks on irrigated soils and human health. Consequently, this research aims at assessing and managing the reuse process by developing a statistically based quality control model capable to investigate the observed and expected capability of the process. Additionally, complementary corrective actions and the decision models were proposed when the reuse processes operate in violation of the standards. These models were tested and validated using data collected from the year 2015 to 2019 at the Delengat pump station in the Western Nile Delta region, which mixes the Delengat drain water with the El-Hager irrigation canal. After raising the awareness amongst the farmers and providing them adequate sanitation services, it was inferred that the ADWR process could provide safe drainage water to be mixed with fresh water. Based on the performed simulations, both models proved to be systematic, quantitative, suitable for computers, and helpful in making informed decisions concerning the sustainability of the reuse process under future water uncertainty. © 2021 Water Environment Federation • Practitioner points▪In Egypt, drainage water reuse is an essential option to cope freshwater shortage. ▪A statistically based quality control model was developed to investigate the capability of the agriculture drainage water reuse process. ▪Additionally, complementary corrective actions and decision models were proposed when the reuse processes operate in violation of the standards. ▪Both the models proved helpful in making informed decisions concerning the sustainability of the reuse process under the future water uncertainty.

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Section: Parametric Process Capability For Delengat Pump Stationmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

A comprehensive management model to maximize the benefits of agriculture drainage water reuse

Helal

Shaban

El‐Karim

et al. 2021

Water Environment Research

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“…The study demonstrated that 222Rn transport can be properly modelled using open-source software tools MODFLOW-NWT and MT3D-USGS to minimize the uncertainty caused by sediment heterogeneity in transport times and increase the accuracy of transport time predictions. Allam [5] studied the effect of inclined barrier walls on the migration of contaminants across porous media. The results showed that the transport time was strongly affected by the inclination ratios of the barrier walls.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dewatering System on Groundwater Contaminations Transport

Mohamed Mostafa,

Helal,

Sobih

et al. 2023

ERJ. Engineering Research Journal

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Deep excavation activities commonly require groundwater dewatering to lower the water table and construct different elements in normal conditions away from the groundwater table. The dewatering process changes the groundwater properties around the dewatering well area. This change includes the water table and water flow rate and subsequently causes contamination transport. This study discusses the relationship between dewatering and contamination spread in groundwater using a numerical model. The numerical modeling was performed by the 3D finite difference technique. The effects of various parameters were explored. These parameters included well depth, contamination depth, horizontal distance between the pollution source and the dewatering well, as well as contamination source discharge and the dewatering well discharge. The effects of the aforementioned parameters on contamination spread and contamination arrival time to the dewatering well area were discussed in the results. The results indicate that increase in both well and contamination depths increased contamination arrival time to dewatering well area and decrease in contamination spread. The effect of the pumping well on the contamination spread diminished when the horizontal distance exceeds twice of the aquifer depth. Also, the increase in pumping rate decreased the arrival time; conversely, the arrival time was extended by the increase in horizontal distance.

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“…Despite potential threats of flash floods, they are resources of fresh water and clean energy. The freshwater could be stored in surface lakes or directed to increase groundwater storage and levels, retarding seawater intrusion process without physical barriers, [22,23]. Furthermore, the potential energy of flowing water could be converted to carbon-free electricity through hydropower facilities.…”

Section: Introductionmentioning

confidence: 99%

Recent Applications of Flash Flood Hazard Assessment Techniques: Case Studies from Egypt and Saudi Arabia

Mansour

Ibrahim

Fujii

et al. 2022

AEF

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Flash floods are severe natural disasters due to their suddenness, frequency, and destruction. Every year, flash floods occur in Egypt and Saudi Arabia, which are located in the heart of the Middle East. Extensive areas in Egypt and Saudi Arabia are covered by mountainous topography. Intense rainfall can generate flash floods with their magnitude dependent on geomorphology and storm characteristics. Flash flood hazard assessment is a feasible way to mitigate potential damage and losses. Illumination, review, and comparison of assessment techniques of flash flood hazards represent an urgent necessity to evaluate advances and challenges in this discipline. Google-scholar and Scopus were used to collect 50 recent scientific papers, most of them published between 2011 and 2021, using the keywords: floods, hazards, assessment, Egypt, Saudi Arabia. Remote Sensing (RS) and Geographic Information systems (GIS) are the cornerstones of these studies, which include the Digital Elevation Model (DEM) and geoprocessing tools. The two items facilitate the calculation of morphometric parameters. Dividing the area and determining the hazard level were the main steps in flash flood hazard assessment. The considered studies relied on varied sets of morphometric parameters that ranged from 3 to 24 morphometric parameters. Area, ruggedness ratio, basin shape index, stream frequency, slope index, and drainage density are the common parameters in the assessment of flash flood hazards. In a flood zone, buildings made from brick have better sustainability in terms of both global warming mitigation and life cycle cost than other materials. Future studies are essential to illustrate the relationships between different morphometric parameters and flash flood hazard degree through field data and define a reliable unified set of morphometric parameters to assess the flash flood hazard degree.

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Retarding contaminant migration through porous media using inclined barrier walls

Cited by 13 publications

References 21 publications

A comprehensive management model to maximize the benefits of agriculture drainage water reuse

A comprehensive management model to maximize the benefits of agriculture drainage water reuse

Effect of Dewatering System on Groundwater Contaminations Transport

Recent Applications of Flash Flood Hazard Assessment Techniques: Case Studies from Egypt and Saudi Arabia

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