MOSTAFA Dougha

Adar Nacereddine , H'maitiche Salheddine

Etude des systèmes de traitement d'eau domestique et la fabrication du filtre à charbon actif en bloc

Rahmani Ahmed , Hamlaoui Thamir

Etude dynamique et qualité des eaux potables dans un réseau de distribution de la ville de Sidi Hadjras W. de M'sila

Ben Amar Messaoud , Mahroug Abdessamed

L’origine des nitrates dans les eaux souterraines de l’aquifère d’El Maâdher (Bousaâda -M’sila)

Bounouiga Ahlam , Ben Nacer Ouarda

Etude paramétrique de la stabilité du barrage rigide El K’sob (en présence d’un séisme)

Bitar Dalal , Seraiche Nour Elhoda

L’évolution de la qualité et pollution des nitrates dans les eaux souterraines au sud chott El-Hodna.

Ahmidat Waffa

: L’évolution de la pollution en nitrates (NO3-) dans les eaux souterraines de la nappe de Maadher, Boussaada M’sila

Azouz Derradji

Etude de stabilité d’un barrage rigide en présence d’un séisme, cas barrage El K’sob, M’sila, Bassin El Hodna

Bentoumi Abderezzak

Etude de dimensionnement avec l’évaluation de la qualité des eaux dans un réseau d’AEP, cas réseau de la ville de Timgad, Batna

Bouderouaz Sofiane

’Estimation de débit de fuite dans le barrage Mahouane, Sétif’’

Groundwater in semi-arid regions like southern Chott Hodna, Algeria, faces growing vulnerability due to rapid population expansion and intensified agricultural activity and usage of chemical fertilizers and pesticides , increasing both depletion and contamination risks. In this study, assessment of groundwater vulnerability has was conducted using DRASTIC model. For this, seven hydrogeological parameters have been considered which are ; Depth to water level (D), Net Recharge (R), Aquifer media (A), Soil media (S), Topography (T), Impact of vadose zone (I) and Hydraulic Conductivity (C). We used ArcGIS 10.8 to turn all the parameters into raster format. Depending on the density of the data and its spatial correlation, we used Inverse Distance Weighting (IDW) or Ordinary Kriging to fill in the gaps. Using the Jenks natural breaks method, each layer was deposited into one of five vulnerability classes. This ensured that the results were consistent and statistically representative. Weight and rating analysis of the seven criteria were carried out using generic DRASTIC algorithm; groundwater Vulnerability Map obtained from DRASTIC analysis has been divided into five vulnerable classes. The DRASTIC index vulnerability map shows that, 5.99% of the study area have very high vulnerability index, 28.88% of the study area have a high vulnerability index and 42.22% of this area have medium vulnerability index, 19.70% of the area have low vulnerability index and 3.20% have a very low groundwater vulnerability. Validation of the proposed groundwater vulnerability model was carried out by comparing the vulnerability indices generated by comparing the nitrate concentrations measured in 69 wells. 62.07% of nitrate samples exceeding the WHO limit of 50 mg/L were located in high-to very-high-vulnerability zones. To prevent groundwater contamination proper land use planning management are necessary, for which vulnerable zones need to be demarcated and DRASTIC is a useful model for vulnerability assessment.

Citation

Mostafa Dougha , ,(2025-12-09), Groundwater Vulnerability Assessment in Semi-Arid Regions Using GIS-Based DRASTIC Model: South Chott Hodna,1ST NATIONAL SEMINAR ON Nature,Life,and Eurth Scienes 1stNSNLES’25At: BOUIRA,Bouira

Groundwater resources in the semi-arid region south of Chott Hodna (Algeria) are increasingly threatened by depletion and salinization, threatening both human consumption and agriculture. This study assessed groundwater quality by analyzing the physicochemical parameters of 45 well samples. It used arithmetic, entropy-weighted, and fuzzy logic-based water quality indices (WQI, EWQI, and FWQI), integrated with GIS-based spatial analysis, to address data uncertainties and variability. The results revealed WQI values ranging from 59.51 to 233.68, with 64.44% of the wells classified as having poor quality due to high concentrations of sulfate, chloride, calcium, and nitrate. EWQI and FWQI showed consistent contamination patterns, with FWQI demonstrating greater accuracy by reducing extreme classifications. Spatial analysis highlighted poor water quality in the Maadher agricultural area, while better quality was observed at the eastern and western ends. Challenges included managing data variability, managing complex methodologies, and ensuring reliable spatial interpolation. The ordinary kriging technique with a spherical semivariogram model effectively identified key pollutants, including nitrate (NO₃⁻), chloride (Cl⁻), and electrical conductivity (EC), concentrated near wadis and agricultural areas.

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Mostafa Dougha , , (2025-10-26), Advanced Groundwater Quality Assessment Using Geochemical Analysis and Water Quality Indices with Fuzzy Logic, Journal of Engineering and Sustainable Development, Vol:29, Issue:6, pages:700-711, College of Engineering, Mustansiriyah University

Groundwater vulnerability is a major concern in arid regions worldwide, where population growth and intensive agriculture increase the risks of depletion and contamination. This study proposes a hybrid groundwater vulnerability assessment framework that improves the conventional DRASTIC model by integrating land-use data and applying advanced weighting techniques, namely the Analytical Hierarchy Process (AHP) and its fuzzy logic variant (Fuzzy AHP). This method makes expert-based weighting less subjective, better captures anthropogenic effects, and facilitates adaptation to challenging situations and limited data. Four vulnerability maps were produced using Geographic Information Systems (GIS): DRASTIC, DRASTIC_LU, AHP DRASTIC_LU, and Fuzzy AHP DRASTIC_LU. We used nitrate levels from 70 wells to verify our work. We found that agricultural areas, especially those above the alluvial aquifer, were the most vulnerable. The ROC curve analysis showed that the model improved over time, with the area under the curve (AUC) values of 0.812 for DRASTIC, 0.864 for DRASTIC_LU, 0.875 for AHP DRASTIC_LU, and 0.951 for fuzzy AHP DRASTIC_LU. These results show that fuzzy AHP DRASTIC_LU makes groundwater risk assessments much more. The GIS-based hybrid models offer a scalable and transferable method for mapping vulnerability, but they also provide local and regional water resource managers with useful information.

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Mostafa Dougha , , (2025-08-12), Groundwater vulnerability assessment in semi-arid regions using GIS-based DRASTIC models and FUZZY AHP: South Chott Hodna, Desalination and Water Treatment, Vol:323, Issue:2, pages:101380, Elsevier

Ghardaia is a desert region in southern Algeria characterized by a Saharan climate with a temperate winter. The Continental Intercalaire and Complexe Terminal aquifer is the main source of groundwater supply in the region; They often present alternations of sandy-sandstone and clayey-sandy formations from the Lower Cretaceous and Turonian to the Senonian, through the Eocene and Mio-Pliocene. Due to natural and anthropogenic effects, the quality of groundwater faces chemical imbalances that reduce its quality. The aim of this study is to assess the level of groundwater pollution and determine the factors that affect its quality. Revealing the hydrogeochemical processes occurring in the aquifer A sampling campaign in 2023 based on 19 physicochemical parameters was carried out on the waters of 20 boreholes in the Ghardaia area. A water quality classification using PIG indices to examine the level of groundwater pollution. Statistical and multivariate statistical analysis (HCA) was applied to define the major factors controlling the aquifer hydrochemistry The statistical results showed that the concentrations of EC, TDS, TH, SO 4 2-, Cl-and Ca 2+ were out of the WHO standard in all samples. 45% of the samples contained Na + concentrations out of the WHO standard. Salinity was higher than 1 and lower than 1.3 g/l in 85% of the samples. The concentrations of other parameters were acceptable for the WHO standard. The PIG water pollution index showed that 30% of the samples were unpolluted and 70% of the samples were very slightly polluted. The hierarchical ascending classification (HAC) revealed three definite clusters explaining three definite processes; NO 3-, T and K + belong to cluster C3 and C4 can be indicated the origin of anthropogenic pollution, cluster C2 Includes TDS, salinity, Na + and Cl-, can be indicated the salinity and the origin of dissolution of halite. Cluster C1 Includes all the remaining parameters, can be indicated the origin of dissolution of carbonates. The diagram of piper and chadha indicates that the dominant hydrochemical facier is of type chloride and sulfate calcium and magnesium. The result of hydrogeochemical evolution showed the presence of dissolution of carbonates of halites the presence of processes of reverse ion exchange. The saturation index indicates that gypsum, anhydrite and halite are undersaturated; therefore they confirm the processes of dissolution of carbonate, halite and gypsum in water. The quality of the groundwater in the Ghardaia region is unpolluted and takes its chemical composition from the water-rock contact

Citation

Mostafa Dougha , ,(2025-02-25), Assessment and determination of hydrogeochemical processes of groundwater in the Ghardaia region (Algeria),Séminaire International Risques naturels, gestion des territoires urbains et outils d'analyse "Les atouts de l'intelligence artificielle"At: Université Mohamed Boudiaf -M'sila-,M'sila

In the arid Bousaada region south of Chott Hodna in Algeria, the mixed aquifer serves as the primary water source. Overexploitation of aquifers due to population growth, expanding irrigated agriculture, and recent climate change in North Africa has led to chemical imbalances and pollution. This study aims to classify groundwater, identify pollution-prone areas, assess nitrate pollution, and determine its causes. In 2021, 60 samples and 13 physico-chemical parameters were analyzed. The dominant hydrochemical facies of the samples were chloride and sulfated calcium and magnesium. The Gibbs diagram suggests the water is young and influenced by evaporation. Groundwater pollution index (PIG) results reveal 16.6% not polluted, 33.33% low pollution, 40% moderate pollution, and 10% high pollution. Spatially, the agricultural zone of Maadher exhibits higher pollution levels (78.3% exceeding WHO nitrate

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Mostafa Dougha , , (2024-12-17), Groundwater hydrochemistry and nitrate pollution assessment in the Bousaada region of Algeria, Algerian Journal of Chemical Engineering AJCE, Vol:2, Issue:2, pages:64-73, Department of Process Engineering and Petrochemical, Faculty of Technology, University of El Oued, Algeria.

Les eaux souterraines au sud de Chott Hodna sont la principale source d'approvisionnement en eau. Cette région est dominée par un climat semi-aride à aride ; il se caractérise par une température élevée et de faibles précipitations. Au cours des dernières décennies, les eaux souterraines ont été exposées à des déséquilibres chimiques qui ont conduit à une mauvaise qualité et à l'apparition de pollution. Les problèmes de qualité des eaux souterraines dans la région peuvent être attribués à l'expansion de l'agriculture irriguée, à la surexploitation des aquifères et aux changements climatiques. L'objectif de ce travail est de définir les caractéristiques hydrochimiques de l'aquifère, d'évaluer la qualité des eaux souterraines pour la consommation humaine et d'identifier géographiquement les zones polluées. Des analyses de 13 paramètres physico-chimiques ont été réalisées sur des prélèvements issus de 45 forages en 2019 dans le sud du Chott Hodna. L'indice entropique de la qualité de l'eau (EWQI) et l'indice canadien de la qualité des eaux (CCME-WQI) a été utilisé pour évaluer et classer la qualité générale de l'eau. A travers plusieurs études, ces indices s'est avéré efficace pour communiquer des informations sur la qualité aux citoyens et aux décideurs du secteur. Des méthodes géographiques ont également été utilisées ; la pondération inverse de la distance (IDW) et le krigeage ordinaire pour présenter les endroits de bonne et de mauvaise qualité et prédire les concentrations dans des endroits inconnus de la zone d'étude. Il a été observé que la plupart des concentrations de calcium et de sulfate sont h​o​r​s

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Mostafa Dougha , ,(2024-12-16), Classification et cartographie de la qualité des eaux souterraines au sud du Chott Hodna (Algérie),university of M'sila,M'sila

La pollution des eaux souterraines est devenue un problème majeur qui préoccupe les chercheurs et les décideurs du secteur. De nombreux facteurs, à la fois climatiques et d'origine humaine, ont un impact significatif sur la qualité de cette ressource vitale. Dans la région semi-aride située au sud de Chott Hodna, les eaux souterraines représentent la seule source d'approvisionnement en eau pour répondre à tous les besoins. Malheureusement, au fil des années, la qualité de l'eau potable a connu une dégradation en raison de la surexploitation de l'aquifère et de la contamination. L'objectif de cette étude est de décrire les caractéristiques hydrochimiques de l'aquifère, d'évaluer le degré de pollution des eaux souterraines, et de localiser géographiquement les zones les plus touchées par la pollution. En 2019, dans la région sud de Chott Hodna, nous avons prélevé des échantillons d'eau de 45 forages, que nous avons ensuite analysés pour 13 paramètres physico-chimiques. Nous avons utilisé l'indice de pollution des eaux souterraines (PIG) pour évaluer le niveau de pollution de l'eau, un outil efficace pour communiquer les données sur la pollution de l'eau aux citoyens et aux décideurs. De plus, nous avons utilisé des approches géographiques telles que la pondération inverse de la distance (IDW) et le krigeage conventionnel pour cartographier les zones polluées. Nos résultats ont révélé que les concentrations de calcium dépassaient toutes les normes sanitaires, et que plus de 93 % des échantillons présentaient des concentrations de SO₄²⁻ et de TH supérieures aux seuils de potabilité. De plus, dans 58 % des échantillons, les n​i​v​e​a​u​x

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Mostafa Dougha , ,(2024-10-30), Study Of Hydrochemistry And Groundwater Pollution In The Southern Region Of Chott Hodna (Algeria): Hydrochemical Characteristics, Pollution Levels, And Implications For Drinking Water Quality,1ER COLLOQUE NATIONAL SUR L’HYDRAULIQUE ET GENIE CIVIL CNHGC-2023At: BOUIRA,BOUIRA

In the arid Bousaada region south of Chott Hodna in Algeria, the mixed aquifer serves as the primary water source. Overexploitation of aquifers due to population growth, expanding irrigated agriculture, and recent climate change in North Africa has led to chemical imbalances and pollution. This study aims to classify groundwater, identify pollution-prone areas, assess nitrate pollution, and determine its causes. In 2021, 60 samples and 13 physico-chemical parameters were analyzed. The dominant hydrochemical facies of the samples were chloride and sulfated calcium and magnesium. The Gibbs diagram suggests the water is young and influenced by evaporation. Groundwater pollution index (PIG) results reveal 16.6% not polluted, 33.33% low pollution, 40% moderate pollution, and 10% high pollution. Spatially, the agricultural zone of Maadher exhibits higher pollution levels (78.3% exceeding WHO nitrate standards). Nitrate pollution index (NPI) indicates 8.33% clean, 5% lightly polluted, and 16.67% moderately polluted samples; 70% are heavily polluted. Interpolated NPI results highlight Maadher's agricultural perimeter as heavily polluted, while high-altitude and non-agricultural areas remain unpolluted. Excessive agricultural practices, such as animal manure use, traces of sewage, solid waste in the Bousaada wadi, and septic tank use by farmers, contribute to increased nitrate levels.

Citation

Mostafa Dougha , ,(2024-10-13), Groundwater hydrochemistry and nitrate pollution assessment in the Bousaada region of Algeria,National conference university of M'sila,M'sila

La région de sud du Chott Hodna est une région de climat semi-aride de l’Algérie. Les eaux souterraines sont la principale source d’approvisionnement en eau. Cette région a connu des changements climatiques représentés par une augmentation de la température et une diminution des précipitations 142.3 mm/an ; outre ces changements, l’augmentation de la population et l’extension de l’agriculture irriguée ont entrainé une exploitation intensive des nappes au sud du chott Hodna. Au fil des années, ces facteurs très possibles ont conduit à l'apparition de déséquilibres dans la chimie des eaux souterraines, ce qui réduit sa qualité pour la consommation. L'aquifère Mio-Plio-Quaternaire présente des alternances souvent désordonnées de dépôts sédimentaires. L’objectif principal de ce travail est de traiter un certain nombre des forages d’eau afin d’évaluer la qualité des eaux souterraines pour la consommation humaine, définir les caractéristiques hydrochimiques de l’aquifère et d’identifier les zones polluées et les causes pouvant y conduire. Des analyses de 13 paramètres physico-chimiques ont été réalisées sur des échantillons de 58 forages en 2019 dans le sud de chott Hodna. L’indice de qualité de l’eau arithmétique (AWQI) a été utilisé pour désigner la qualité de l’eau. AWQI est un outil efficace et largement utilisé pour communiquer des informations sur la qualité de l’eau aux citoyens et aux décideurs. Des méthodes statistiques et géographiques ont également été utilisées pour déterminer les principales sources de variation hydrochimique et les facteurs influençant la qualité des eaux souterraines. Les résultats obtenus par AWQI ont révélé que les eaux souterraines de la zone d’étude appartenaient à des catégories d’eau variant entre une qualité d’eau bonne à mauvaise. Il a été observé que les concentrations en sulfate étaient toutes supérieures aux normes sanitaires, de même que la dureté totale. Plus de 60 % des échantillons contiennent des concentrations de Cl - et Ca 2+ en dehors de la limite pour l’eau potable. De plus, 63 % des échantillons dépassaient la limite de nitrates pour l’eau potable (50 mg/l). Le diagramme de Piper classe les eaux souterraines en faciès hydrochimiques de sulfate- calcium- magnésium-chlorure, et tend vers la salinisation. Les distributions spatiales des paramètres à l’aide de la pondération inverse de la distance (IDW) ont montré que les concentrations de tous les éléments sont élevées dans la zone d’étude et en particulier près d’oued Bousaada, à l’exception du sodium et du potassium qui sont élevés dans la partie nord-ouest de la région. Grâce à ces méthodes employées, deux processus principaux qui contrôlent la chimie de l’eau ont été détectés (i) les effets de l’interaction entre l’eau et les formations carbonatées dans la région (processus naturels) et (ii) les contributions anthropiques dangereuses représentées par les pratiques agricoles complexes et les eaux usées (Processus anthropique). Mots-clés : qualité des eaux souterraines, indice de qualité de l’eau (AWQI), pondération inverse de la distance (IDW), aquifères Mio-Plio-Quaternaires, sud du Chott Hodna.

Citation

Mostafa Dougha , ,(2024-06-07), Évaluation de la qualité des eaux souterraines et détermination des caractéristiques hydrodynamiques de l’aquifère dans le sud du Chott Hodna (Algérie),1ST INTERNATIONAL HYBRID COLLOQUIUM WATER & ENVIRONEMENT SHARING TO PRESERVE. MAGHNIA-ALGERIA,MAGHNIA-ALGERIA

Évaluation de la qualité des eaux souterraines et détermination des caractéristiques hydrodynamiques de l’aquifère dans le sud du Chott Hodna (Algérie)

Citation

Mostafa Dougha , ,(2024-06-07), Évaluation de la qualité des eaux souterraines et détermination des caractéristiques hydrodynamiques de l’aquifère dans le sud du Chott Hodna (Algérie),Évaluation de la qualité des eaux souterraines et détermination des caractéristiques hydrodynamiques de l’aquifère dans le sud du Chott Hodna (Algérie),MAGHNIA-ALGERIA

Climate change and overexploitation of aquifers by irrigated agriculture and water consumption by the population caused the decline of water levels and hydrochemical changes in the aquifer. Our study area is the Maadher plain which is located in the north-central of Algeria, with an arid to semi-arid climate. The Mio-Plio-Quaternary aquifer often shows disordered alternations of sedimentary deposits. The aquifer is recharged mainly by wadis and drainage contributions from the Cretaceous and Miocene layers. The sampling campaign in 2019 based on 13 physicochemical parameters was carried out on water from 32 boreholes in the study area, compared to data archives of both sampling campaign in 1996. Multivariate statistical analyses were used to identify and know the groundwater origin from analysis results. Two statistical methods, principal component analysis (PCA), and hierarchical cluster analysis (HCA) are applied in order to define the major control factors that affect the hydrochemistry of Maadher plain. The results of groundwater samples showed that water is mainly hard. The order of abundance of major cations exchangeability for common ions in groundwater was: Ca2+ > Mg2+ > Na+ > K+ while the major anions reveal an order as follows SO4 2− > HCO− 3 > Cl− > NO3 −. The Piper diagram indicates that the hydrochemical facies of sulfate– chloride–nitrate–calcium (SO4 −2–Cl−–NO3 −–Ca2 + type water), which globally characterizes the study area, and these elements are the dominant dissolved ions. It was noted that the tendency of such groundwater is toward salinization because the minimum values of total hardness exceed the WHO standard, which has led to a water quality between average and poor. A total of 62% of the groundwater samples exceeded the Ca2+ standard, nearly 65% of the samples exceeded the Cl− standard, and also the sulfate concentrations were all above health guidelines. The electrical conductivity values are considerable, and 22% of the groundwater samples exceed the standard. PCA analysis showed that the first factors accumulated a percent variance of 74.22%. The first factor accounts for 40.45% variance, represented by a large number of mineralization parameters. The HCA analysis with Q-mode provided insight into the mineralization of aquifers (Mio-Plio- Quaternary), so that the main study area can be divided into three zones of different groundwater quality, with a total of three factors of control.

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Mostafa Dougha , ,(2024-06-01), Multivariate Analysis and Origin of Groundwater Quality in Arid Region: Maadher of Hodna (Algeria),Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions,Tunisia

Hydrogéochimie et classification de la qualité des eaux souterraines à l'aide de l'indice de qualité entropique (EWQI) et du SIG : cas d'étude sud du Chott Hodna (Algérie)

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Mostafa Dougha , ,(2023-10-24), Hydrogéochimie et classification de la qualité des eaux souterraines à l'aide de l'indice de qualité entropique (EWQI) et du SIG : cas d'étude sud du Chott Hodna (Algérie),1er séminaire international de biologie sur la gestion durable des ressources naturelles en zones arides et semi-arides,Naama, Algeria

Recently, coupled Wavelet transform and Neural Networks models (WANN) were extensively used in hydrological drought forecasting, which is an important task in drought risk management. Wavelet transforms make forecasting model more accurate, by extracting information from several levels of resolution. The selection of an adequate mother wavelet and optimum decomposition level play an important role for successful implementation of wavelet neural network based hydrologic forecasting models. The main objective of this research is to look into the effects of various discrete wavelet families and the level of decomposition on the performance of WANN drought forecasting models that are developed for forecast drought in the Algerois catchment for long lead time. The Standard Precipitation Index (SPI) is used as a drought measuring parameter at three-, six- and twelve-month scales. Suggested WANN models are tested using 39 discrete mother wavelets derived from five families including Haar, Daubechies, Symlets, Coiflets and the discrete approximation of Meyer. Drought is forecasted by the best model for various lead times varying from 1-month lead time to the maximum forecast lead time. The obtained results were evaluated using three performance criteria (NSE, RMSE and MAE). The results show that WANN models with discrete approximation of Meyer have the best forecast performance. The maximum forecast lead times are 36-month for SPI-12, 18-month for SPI-6 and 7- month for the SPI-3. Drought forecasting for long lead times have significant values in drought risk and water resources management.

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SALIM Djerbouai , AHMED Ferhati , Mostafa Dougha , benselama oussama , MAHMOUD Hasbaia , Souag-Gamane Doudja, Omar Djoukbala, , (2023-01-27), Comparative Study of Different Discrete Wavelet Based Neural Network Models for long term Drought Forecastin, Water Resources Management, Vol:37, Issue:, pages:19, Salim Djerbaoui

In a semi-arid region of Maadher, central Hodna (Algeria), groundwater is the main source for agricultural and domestic purposes. Anthropogenic activities and the presence of climate change’s effects have a significant impact on the region’s groundwater quality. This study’s goals were to use water quality indices to evaluate the groundwater’s quality and its suitability for drinking and irrigation, as well as to identify contaminated wells using a geographic information system (GIS) and the spatial interpolation techniques of ordinary kriging and inverse distance weighting (IDW). The results reveal that all water samples exceeded the World Health Organization’s standards for nitrate ions and had alarming concentrations of calcium, chlorine, and sulfate (WHO). According to Piper’s diagram, the groundwater hydrochemical facies is composed of the elements sulfate–chloride-nitrate-calcium (SO42−-Cl—NO3−-Ca2 …

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Mostafa Dougha , , (2022-11-24), Groundwater quality evaluation based on water quality indices (WQI) using GIS: Maadher plain of Hodna, Northern Algeria, Environmental Science and Pollution Research, Vol:1, Issue:, pages:1-20, Springer Berlin Heidelberg

Hydraulique appliquée : Ecoulements forcés. Cours et exercices avec corriges Type de document : texte imprimé Auteurs : Mostefa Dougha, Auteur Editeur : Edition El Motanaby Année de publication : 2022 Importance : 201 p. Présentation : couv. coul., tab.,fig., phot., Format : 27x19 cm ISBN/ISSN/EAN : 978-9931-865-70-4 Langues : Français (fre) Langues originales : Français (fre) Résumé : Cet ouvrage résume les notions de base et les formules essentielles sur les écoulements en charge dans les conduites. Il est destiné aux étudiants en sciences et technologies et aux ingénieurs en exercice. Le livre apporte aux étudiants les notions basées sur les lois de conservation appliquées à un écoulement dans une conduite. il traite la dynamique des fluides incompressibles en écoulements permanents. Les chapitres de cet ouvrage traitent des écoulements sous pression, des pompes et donc du dimensionnement des réseaux hydrauliques en illustrant l'application de la théorie sous-jacente à un large éventail de situation pratiques. Des exercices avec leurs réponses permettent aux étudiants d'évaluer leur compréhension de la théorie et des méthodes d'analyse et de conception. accompagné de près de 60 exercices avec des corrections détaillées sur des applications pratiques intéressantes qui en font une bonne préparation aux examens, aux concours et à l'aventure professionnelle.

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MostafaDougha , ,(2022-10-17); Hydraulique appliquée - Ecoulements forcés - Cours et exercices corrigés,,Edition El Motanaby Algérie

Mécanique des fluides -Cours et exercices corrigés-

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MostafaDougha , ,(2022-10-17); Mécanique des fluides Cours et exercices corrigés,,Edition El Motanaby Algérie

This study focused on water quality and hydro-geochemical processes (evolution, origin) in the Maadher region, central Hodna in Algeria. In recent decades, the excessive exploitation of this resource due to urbanization, irrigation, and the effect of climate change reaching the countries of northern Africa have caused a decline in water levels and hydrochemical changes in the aquifer. The sampling campaign in 2019 based on 13 physicochemical parameters was carried out on the water from 32 boreholes in the study area, compared to data archives of both sampling campaigns in 1967 and 1996. The result revealed that the groundwater as a whole has moderate freshwater quality, due to its total dissolved solids (TDS) content and other dissolved ions of concern (nitrate NO3−), which exceed WHO standards. In addition, Piper diagram indicates that the hydrochemical facies of sulfate–chloride–nitrate–calcium (SO42−–Cl−–NO3−–Ca2+ type), which globally characterizes the study area and these elements are the dominant dissolved ions. Principal component analysis and hierarchical cluster analysis (HCA) methodologies are applied in order to define the major control factors that affect the hydrochemistry of Maadher plain. Three distinct water groups were found, illustrating a different evolution of salinity (EC and TDS). The HCA indicated an interesting cluster with a distinct contamination signature and most likely with significantly higher sulfate, chloride, and nitrate concentrations. Anthropogenic processes also play an important role in the study area. The water resource comes from Bousaada Wadi, the exchange at the aquifer depth and the agricultural practices contribute to the deterioration of the quality.

Citation

Mostafa Dougha , , (2022-07-21), Hydrogeochemical processes and multivariate analysis for groundwater quality in the arid Maadher region of Hodna, northern Algeria, Acta Geochimica, Vol:41, Issue:5, pages:893-909, Science Press

The change of climate and intensive exploitation of groundwater resources in the plain of M'sila has influenced the hydrochemical functioning of the complex aquifer. This resulted in a decrease in the piezometric level of groundwater. The multivariate statistical techniques were used to determine the main factors and regrouping parameters/wells and to understand the origin of groundwater chemistry. Multivariate analysis (principal component analysis and cluster analysis) was performed to identify a common source for sampling data of a semi-arid aquifer. Physicochemical analyses were conducted on the waters of 17 wells. The chemical water classification shows the dominance of a chlorinated calcium and magnesium sulphate type facies, which has a very remarkable tendency towards the salinisation. Cluster analysis based on major parameters contents defined four main chemical water groups with increased water-rock interaction. Some parameters presented the highest concentrations of the total of dissolved salts provoking a poor quality of water.

Citation

MAHMOUD Hasbaia , Mostafa Dougha , , (2019-03-07), Contribution of the multivariate analysis and origin for groundwater quality of mixed aquifer in the M'sila plain (Algeria), International Journal of Hydrology Science and Technology, Vol:9, Issue:2, pages:154 - 172, inderscience publishers

A numerical study of hydrodynamic behaviour in swimming pools was conducted to control the water quality. Hydrodynamics and mass transport processed by Computational Fluid Dynamics (CFD) were compared with experimental measurements of the residence time distribution (RTD). A CFD tool with turbulence models and a transport model of a species used to find the hydrodynamic effect on water quality by limiting the water dead zones that prevent the arrival of the disinfectant and that favour the development of micro-organisms. In addition, the hydrodynamic behaviour was determined experimentally by a pulse tracer test to compare the RTD. This work describes the hydrodynamic behaviours of three pools. The models are suitable for the study of physical and chemical phenomena with long characteristic times. The purpose of this article is to present the influences of hydrodynamic behaviour on the water quality, which in turn is influenced by design and hydraulic exchange conditions. In general, the result of this research underlines the hydrodynamic behaviour importance for a better water quality in a swimming pool. The next part of the project will focus on chemical and biological transformation processes.

Citation

Mostafa Dougha , MAHMOUD Hasbaia , , (2018-04-07), Analysis of numerical simulation of the hydrodynamics in swimming pools, in terms of water quality, Euro-Mediterranean Journal for Environmental Integration, Vol:3, Issue:33, pages:01-13, springer

Abstract: The recent studies on the climate change vulnerability in the arid and semiarid regions show a trend to increase the aridity, which accelerates erosion. This complex and aleatory phenomenon is dependent in addition to the anthropogenic factor on some natural parameters, especially, the hydro-climatic forcing, the topography, the geology and the land use. This study aims to analyze and map the erosion sensitivity of Hodna basin in the central of Algeria with an area of 26000 km². It is the fifth basin of Algeria, located at 150 km to the south of the Mediterranean coast. The erosion sensitivity mapping approach is based on a multi-criteria method of the parameters of topography, the geology and the land use with a hydro-climatic forcing parameter represented by the precipitation. The analysis of the maps obtained under GIS environment for different criteria, shows that the findings vary from one criterion to another. However, taking all criteria into account, the obtained map shows that the areas with a high vulnerability to erosion are located in the south and the west of the basin, representing 25% of the total basin area.

Citation

Mostafa Dougha , MAHMOUD Hasbaia , , (2017-10-15), Erosion Sensitivity Mapping Using a Multi-Criteria Approach under GIS Environment the Case of the Semiarid Hodna Basin in Central Algeria, International Journal of Water Resources and Arid Environments, Vol:6, Issue:1, pages:13-19, the Prince Sultan Institute for Environmental, Water & Desert Research. ISSN: 2079-7079