1D hydraulic modelling of Bahr El-Baqar new channel for northwest Sinai reclamation project, Egypt

Raslan, Ahmed M.; Riad, Peter; Hagras, Mona A.

doi:10.1016/j.asej.2020.02.005

Cited by 11 publications

(8 citation statements)

References 8 publications

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“…Out of the seven drains that discharge into Lake Manzala, Bahr El-Baqr drain (BBD) is the biggest and dirtiest one (5.5 billion m 3 /day), [13]. Particulate, nutrient, heavy metal, hydrocarbon, and hazardous chemical residues, such as herbicide and pesticide residues, make up the wastewater in the drain [14]. Despite being the largest drain in the Eastern Delta, Bahr El-Baqr was not included in the El-Salam Canal's supply system because of the high level of pollution, which delivered mixed drainage and fresh water to Sinai.…”

Section: Study Areamentioning

confidence: 99%

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

Soliman¹,

Othman²,

Shoman³

et al. 2022

Preprint

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In areas with limited water resources, the reuse of treated drainage water for non-potable purposes is increasingly recognised as a valuable and sustainable water resource. Numerous pathogenic bacteria found in drainage water have a detrimental impact on public health. The emergence of antibiotic-resistant bacteria and the current worldwide delay in the production of new antibiotics may make the issue of this microbial water pollution even more challenging. This challenge aided the resumption of phage treatment to address this alarming issue. In this study, strains of Escherichia coli and Pseudomonas aeruginosa and their phages were isolated from drainage and surface water from Bahr El-Baqar and El-Manzala Lake in Damietta governorate, Egypt. Bacterial strains were identified by microscopical and biochemical examinations which were confirmed by 16S rDNA gene sequencing. The susceptibility of these bacteria to several antibiotics revealed that most of the isolates had multiple antibiotic resistances (MAR). The calculated MAR index values (> 0.25) categorized study sites as potentially hazardous to health. Lytic bacteriophages against these multidrug resistant strains of E. coli and P. aeruginosa were isolated and characterized. The isolated phages were found to be pH and heat stable and were all members of the Caudovirales order as recognized by electron microscope. They infect 88.9% of E. coli strains and 100% of P. aeruginosa strains examined. Under laboratory conditions, the use of a phage cocktail resulted in a considerable reduction in bacterial growth. The removal efficiency (%) for E. coli and P. aeruginosa colonies increased with time and maximized at 24 hr revealing nearly 100% reduction after incubation with the phage mixture. The study candidates new phages for detecting and control other bacterial pathogens of public health concern to limit water pollution and maintain adequate hygiene.

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Section: Study Areamentioning

confidence: 99%

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

Soliman¹,

Othman²,

Shoman³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Although Bahr El-Baqr is the largest drain in the Eastern Delta, its high degree of pollution prevented it from being connected to the El-Salam Canal, which transports mixed drainage and fresh water to Sinai. Large volumes of water that could have been used for irrigation are lost as a result of this problem [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

et al. 2023

View full text Add to dashboard Cite

In areas with limited water resources, the reuse of treated drainage water for non-potable purposes is increasingly recognised as a valuable and sustainable water resource. Numerous pathogenic bacteria found in drainage water have a detrimental impact on public health. The emergence of antibiotic-resistant bacteria and the current worldwide delay in the production of new antibiotics may make the issue of this microbial water pollution even more challenging. This challenge aided the resumption of phage treatment to address this alarming issue. In this study, strains of Escherichia coli and Pseudomonas aeruginosa and their phages were isolated from drainage and surface water from Bahr El-Baqar and El-Manzala Lake in Damietta governorate, Egypt. Bacterial strains were identified by microscopical and biochemical examinations which were confirmed by 16 S rDNA sequencing. The susceptibility of these bacteria to several antibiotics revealed that most of the isolates had multiple antibiotic resistances (MAR). The calculated MAR index values (> 0.25) categorized study sites as potentially hazardous to health. Lytic bacteriophages against these multidrug-resistant strains of E. coli and P. aeruginosa were isolated and characterized. The isolated phages were found to be pH and heat stable and were all members of the Caudovirales order as recognized by the electron microscope. They infect 88.9% of E. coli strains and 100% of P. aeruginosa strains examined. Under laboratory conditions, the use of a phage cocktail resulted in a considerable reduction in bacterial growth. The removal efficiency (%) for E. coli and P. aeruginosa colonies increased with time and maximized at 24 h revealing a nearly 100% reduction after incubation with the phage mixture. The study candidates new phages for detecting and controlling other bacterial pathogens of public health concern to limit water pollution and maintain adequate hygiene.

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“…Compared with other hydraulic software, HEC-RAS has a user-friendly interface, good software compatibility, and it facilitates the calculation of various hydraulic structures. Among which the most representative one, the HEC-GeoRAS plug-in, can be combined with ArcGIS to extract topographic data in areas without measured data and provide river geometry data for hydrodynamic simulation (Mokhtar et al, 2018;Raslan et al, 2020;Namara et al, 2021); therefore, the HEC-RAS model is selected for this study. One-dimensional or two-dimensional hydraulic models can be created in HEC-RAS (Lea et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Simulation of one-dimensional dam-break flood routing based on HEC-RAS

Shen

Lei

et al. 2023

Front. Earth Sci.

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Dam-break is a serious disaster resulting in severe damage to downstream communities. Therefore, analyzing the affected range and the evolution process of dam-break floods in advance is valuable. However, the difficulties and challenges lie in the complexity of the breaking process of earth-rock dams, the uncertainty in the evolution of dam-break floods, and the geographical variability. Given this, the objective of this study is to analyze the characteristics of the dam-break flood evolution. The study chooses Chengbi River Reservoir as the research object, HEC-RAS as the simulation software, unsteady flow differential equations and one-dimensional Saint-Venant equations as the control equations, and it uses four-point implicit finite difference method for discrete solution. In this paper, the dam-break flood evolution is simulated under three boundary conditions (full breach, 1/2 breach, 1/3 breach), and the main results are as follows. From the dam site section to the Tianzhou hy-drological station section, the peak discharge decay rates of the three schemes are 78%, 77%, and 67%, respectively. The water level decay rates of the three schemes are 47%, 36%, and 30%, respectively. A 1 m increase in the bursting water level elevation increases the peak flow by ap-proximately 7%, and the highest water level in front of the dam by 1 m, and delays the peak time by 1.5 h on average. In addition, the preliminary inundation extent for the Baise City is obtained. The analysis results can provide a fundamental basis for flood control as well as a reference for flood disaster management.

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1D hydraulic modelling of Bahr El-Baqar new channel for northwest Sinai reclamation project, Egypt

Cited by 11 publications

References 8 publications

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

Biocontrol of multi-drug resistant pathogenic bacteria in drainage water by locally isolated bacteriophage

Simulation of one-dimensional dam-break flood routing based on HEC-RAS

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