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Journal Cover LARHYSS Journal
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 1112-3680
   Published by Université de Biskra Homepage  [1 journal]
  • COMPARATIVE STUDY OF TWO TYPES OF WATER FOR THE CULTURE OF SPIRULINA
           ARTHROSPIRA PLATENSIS

    • Authors: A.O.R KANON, N.M. SEU-ANOI, A. OUATTARA, B. A. T. KOUASSI
      Abstract: A study was led to the laboratory in order to evaluate the growth of Arthrospira platensis,cultivated to basis of two types of water (spring water and water of drilling) and to identify the medium presenting the best output in terms of concentration in biomass. The cultures were carried out according to the same physical and chemical conditions with the mediums tests enriched in nutritive elements (medium of Zarrouk) and the mediums pilot not-enriched. After 21 days of culture, the daily growth rate of Arthrospira platensis was 21,03 % and 20,64 % respectively in spring waters (Banco) and of drilling (Blondey) enrich in nutritive elements. No significant difference was recorded (p > 0,05). On the other hand, the growth stocks day laborer noted in the culture mediumnot-enriched, were significantly different (p < 0,05) with a rate from 52 % in spring water compared to the water of drilling where it amounts to 45 %. The temperature having remained constant with 22°C, the values of pH recorded during the experiment, presented tendencies similar and favorable for the culture of the cyanobacteria.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • MANAGEMENT OF A SEWERAGE NETWORK BY COUPLING GIS AND HYDRAULIC MODELING: A
           CASE STUDY OF THE NETWORK OF THE NEW UNIVERSITY IN TLEMCEN, ALGERIA

    • Authors: C. ABDELBAKI, B. ROUISSAT, I. CHAREF, A. HADJ ABDELKADER
      Abstract: The objective of this work is to ensure the management of the sewerage network of the new university in Tlemcen using a MapInfo GIS and hydraulic modeling. Mapbasic subroutines are developed for the simulation of the network behaviour for different return periods, based on the model of Caquot (surface method). This model will generate strategies for managing rainwater flux taking into account the weather conditions, topography and land use. The simulations done helped to highlight the influence of rainfall events on the network. This methodology can help managers for decision-making by addressing the shortcomings identified and may therefore provide a performance level of the optimal network operation.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • STATISTICAL AND HYDROCHIMICAL CHARACTERIZATION OF THE SHALLOW AQUIFER OF
           TADJNANET –CHELGHOUM LAID (EASTERN ALGERIA)

    • Authors: A. KHEDIDJA, A. BOUDOUKHA
      Abstract: The plain of Tadjnanet Chelghoum Laid with agricultural vocation, is located in North East of Algeria where different water needs are covered by the shallow aquifer waters of the Mio-Pliocene-Quaternary. The overexploitation of the aquifer, resulting in falling average level of the water table and increased salinity of groundwater. Hydrochemical study using a feature reports and statistical tools such as principal component analysis and hierarchical clustering was performed using 33 water samples taken in wells. Chemical analyzes show that the waters are calcium bicarbonate type to the limits and calcium sulfated and sodium chloride at the center. The application of different tools has shown that the infiltration of precipitation water in karst aquifers on the limits where the waters acquire their original mineralization (carbonate) mineralize advantage of chlorides, sodium and sulfates in contact terrigenous salt formations of Mio-Pliocene-Quaternary. Salinization of water appears to be mainly due to the dissolution of gypsum, halite and epsomite. The application of hierarchical clustering and principal component analysis showed the existence of two groups with salinity increases in boundaries to the center of the plain with the flow.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • WATER MANAGEMENT IN THE TUNISIAN AGRIFOOD INDUSTRY AND ITS IMPACTS ON
           ENVIRONMENT AND ON FOOD SECURITY

    • Authors: E. OUERTANI, I. LAAJILI, T. STAMBOULI, A. BENALAYA
      Abstract: For the food-processing companies, and particularly in developing countries and transition economies such as Tunisia, good water management is becoming more challenging especially with the increase of the water prices and scarcity and its environmental impact. So, the present paper proposes an investigation of water management in food-processing industry, a diagnosis of the contribution of these companies in the flows of " virtually " exported water and their possible impacts on environment and on food security in Tunisia. Based on a survey with a sample of oil-mills and dates packaging stations and on technical-economic index cards of the main practiced cultures in Tunisia, it appears that water consumption in the agrifood industry is really marginal compared with the agriculture, but its ecological impact is crucial. Olive oil and dates exports represent 36% of the agrifood exports value, in return they contribute up to 88% of the water volume implicitly sacrificed through agrifood Tunisian exports. The impact of these exports on water resources depletion is widely counterbalanced by Tunisian agrifood imports.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • EFFECT OF RIVER INFLOW ON WATER QUALITY RESERVOIRS STUDY CASE ‘SAU
           RESERVOIR’

    • Authors: S. TAKKOUK, S. CASAMITJANA, A. BOUGUERNE
      Abstract: The aim of this work is to apply 3D hydrodynamic model ELCOM (Estuary and Lake Computer Model), combined with water quality model CAEDYM (Conceptual aquatic environment dynamic) model to Sau reservoir. This study is an attempt to get an idea about the effect of river water inflow dynamic on water quality in daily time scale. Simulation takes place in summer period in stratified conditions and has been undertaken for approximately one week starting in the end of July of the 2005. This, study may contribute for future investigation and environmental consequences of water quality in Algerian Reservoirs.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • CHARACTERIZATION SURFACE WATER - GROUNDWATER AQUIFER IN COASTAL WATERSHED
           OF THE REPUBLIC OF CONGO LOÉMÉ

    • Authors: M.M. NGOUALA, U.G. MBILOU, M. TCHOUMOU, M.J. SAMBA-KIMBATA
      Abstract: This study characterizes the waters of the watershed Loémé by field and laboratory methods. The physico-chemical components were measured in situ and chemical analysis in the laboratory. Chemical analyzes referred hydrochemical and statistical methods. The parameters of the water balance were used in assessing the power of the web. The curves of changing groundwater levels show two trends: the charging and discharging of the web. The spatial distribution of major ions in this watershed shows peaks at the ends and center. It appears that the waters of this area are characterized by low levels of ions, the testimony of the power of the surface water table and the contribution of different geological formations through. Mineralization of water is governed primarily by flow phenomena of dissolution and precipitation of minerals such as: calcite, gypsum... The principal component analysis indicated that variables controlling salinity water (ions major) represent the axis of mineralization. The Piper diagram shows three groups of water: Chloride calcium and magnesium sulphates; Chloride (nitrated) sodium and potassium or sodium sulphates; calcium and magnesium bicarbonates.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • HYDROGEOCHEMICAL AND MICROBIOLOGICAL CHARACTERIZATION OF GROUND WATER IN
           THE SYSTEM OF AQUIFERS MULTI LAYER OF POINTE-NOIRE IN REPUBLIC OF CONGO

    • Authors: U.G. MBILOU, M. TCHOUMOU, M.M. NGOUALA, J. BALOUNGUIDI
      Abstract: To evaluate the groundwater of Pointe-Noire for human use, it was necessary to determinate the various parameters influencing the quality of water of the coastal sedimentary basin. Their physicochemical elements were followed during all the hydrological cycle of the year 2015 in 16 piezometers(drilling sand well). The results of the chemical analyses were treated by hydrochimic and statistical methods. Spatial of the elements shows the same evolutionary pace as that observed for chloride, sodium, sulphates, magnesium and calcium. This reveals that water of drilling sand the wells of Point-Black is characterized by low contents dissolved salts. This would be explained by the importance of the surface food. The Analysis in Principal Components and Ascending Hierarchical Classification indicate that the mineralisation of this wate ris controlled by three great phenomena: the mineralisation which results in the hydrolysis of minerals silicated for groundwaters, the pluvio lessivage of the grounds for surface water and, of the human activities in the production of pollutingwaste. This study also shows that water of Point-Blackis contaminated by total germs, fecal coliformes and totals which are the consequence of are centanthropic pollution.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • NUMERICAL COMPTING OF 2D UNSTEADY FREE SURFACE FLOW THROUGH A RECTILINEAR
           SYMETRICAL EXPANSION

    • Authors: A. BERREKSI, S. BENMAMAR, S. BENMAMAR, A. KETTAB, A. KETTAB, B. REMINI, B. REMINI, T. IKNI, T. IKNI, M. NAKIB, M. NAKIB
      Abstract: The purpose of this work is the resolution of the Saint Venant two-dimensional equations governing unsteady and supercritical flows crossing a hydraulic transition corresponding to a symmetrical rectilinear expansion which is generally used in the free surface spillways chutes. ¶The discretization of the equations of motion, which are of the type hyperbolic and nonlinear, will be made using Beam and Warming implicit finite differences scheme. ¶The determination of the water profiles along the axis of symmetry and the solid side wall as well as the three-dimensional and two-dimensional flow patterns, is the objective of the application part, and this in order to test the aptitude of the elaborate numerical model to simulate the type of studied flow.¶
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • REGIONAL APPROACH FOR THE ESTIMATE OF MAXIMUM DAILY RAINFALL IN NORTHERN
           ALGERIA

    • Authors: M. MEDDI, S. TOUMI
      Abstract: Maximum rain quantiles estimate has always been of great importance to hydrologists and water resource managers. This information is essential for planning emergency situations related to hazardous weather conditions and the design of water supply engineering structures. In many instances, it is vital to estimate the extreme values relevant to the few frequencies for sites where there are few measures or even almost non-existent. The regionalization approach is the most used in such cases.The regionalization procedure, based on the L-moments coupled with the rain index method has been both applied to rainfall data of two hundred and thirty (230) stations spread at random across northern Algeria and is the goal of this work. L-moments method confirmed the homogeneity of the twelve (12) regions that make up the study area. Rain indexes, combined with the regional growth curves developed in this study may logically estimate maximum rains quantiles at the stations by using the mean maximum rain in the observations series. The study provides an estimate of the regional characteristics of daily maximum rainfall that may be useful in studies of floods in the engineering design of water supply engineering structures.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • APPLICATION OF THE FINITE VOLUME METHOD TO THE COMPUTATION OF WATER HAMMER
           PROTECTION

    • Authors: L. AMARA, A. BERREKSI, B. ACHOUR
      Abstract:  The computation unsteady flow in a pressurized hydraulic systempresents many difficulties as well on the practical level as theoretical. In this work, a numerical approach based on the finite volumes method is presented for the simulation of water hammer problems. After having presented the hyperbolic differential equations governing the elastic wave propagation, the discretization details of the mathematical model meaning Godunov scheme are given as well as the integration of the source term and the implementation of the boundary conditions where an approach in excentred grid is introduced. The application treats a case of pumping station protected by a throttled air vessel. The results are analyzed and compared with those obtained in experiments and also numerically by the method of the characteristics. The finite volume numerical model gave very satisfactory results compared to the method of the characteristics and where congruence with experimental measurements is appreciable. 
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • FLOW OF POLLUTANTS LINKED TO ANTHROPIC ACTIVITIES AND RISKS ON WORLDWIDE
           SURFACE WATER RESOURCE (LITERATURE REVIEW)

    • Authors: A. ADJAGODO, M. AGASSOUNON DJIKPO TCHIBOZO, N. C. KELOME AHOUANGNIVO, R. LAWANI
      Abstract: This bibliographical synthesis made point of various anthropogenic activities and their impacts on the quality of surface waters, the food chain and human health. Anthropogenic activities interfere on surface waters by creating environmental and health problems. Domestic, agricultural, industrial, hospital, artisanal fishing and tourism activities, are most incriminated. Pollution of surface water by heavy metals, pesticides, fertilizers, oil and pathogenic organisms (bacteria, parasites, viruses), is a real environmental and health problem. Presence of organic pollutants makes difficult the treatment of raw water intended for human consumption. The increased use of pesticides in agriculture explains the presence of pesticide residues in surface waters in Africa and around the world. The industries and hospitals, due to discharges of effluent and solid waste in the environment, without proper treatment represent a source of pollution of ecosystems and aquaculture species. The presence of pollutants in surface waters degrades their quality and endangers users’ health and fish products.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • FLOW PREDICTIONS IN VEGETATED OPEN CHANNELS

    • Authors: M. MORRI, A. SOUALMIA, P. BELLEUDY
      Abstract: Vegetation development in river bed and in the banks, may affect the hydraulic conditions and hydrodynamic behavior of a stream. Understanding flow dynamic within vegetation becomes very important to control floods and the stream ecosystem. The present paper explores the capacity of a model in a two-dimensional code Telemac2D, to predict flow characteristics in vegetated open channel. This model adopted a two-layer approach to determine the mean velocity in vegetated flume using vegetation characteristics. The verification of the programmed model capacity was based on comparison between simulations and measured results derived from the experiences of Keramaris Evangelos (2012), Sergio De Felice (2008) and Le Bouteiller and Venditti (2014). These experiments were conducted with submerged vegetation in a rectangular open channel flow to determine the vegetation effects on flow processes. The comparison shows a good agreement between the simulations results and the measured ones in presence of slopes. This programmed model was more accurate in the case of rigid vegetation than flexible vegetation. In general, the new roughness model could be used to predict the effect of vegetation resistance on flow, which is a very important phenomenon to control river floods.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • COAGULATION FLOCCULATION TEST OF DJORF TORBA’S WATER DAM (BECHAR) USING
           CLAY AND LIME: A COMPARATIVE STUDY

    • Authors: M. BENAICHATA, A. BOUKERROUI, M. ASSOULI
      Abstract: The aim of this study is interested in the influence of clay addition to the coagulation-flocculation process of Djorf-Torba’s water dam situated near Bechar region (South West Algeria).The Jar test trials with aluminum sulphate were conducted on the raw water using lime adjuvant and clay. The operations of floculation-coagulation process were conducted with lime alone, lime +clay (Maghnia clay and Oued Khodir clay) and add clay without lime. The results show that the turbidity value of raw water was decreased with amount of clay adjuvant used alone. Indeed, the obtained results showed that the addition of clay doses in interval 7 - 9 mg/l give significant reductions of turbidity. However, the best amount of clay is 7 mg/l and the yield calculated at this concentration is equal at 96 %, highest value, then it is only 95.3% in the presence of lime alone.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • WATER QUALITY IN AN ARID WEATHER AREA, CASE: GROUND WATER OF TERMINAL
           COMPLEX AND CONTINENTAL INTERCALARY. ALGERIAN SOUTHEAST

    • Authors: S. HABES, L. DJABRI, A. BETTAHAR
      Abstract: Touggourt area is located in the South East part of Algeria, it contains large amounts of water, and they are extracted from the fossil water (the Terminal Complex and the Continental Intercalary).The water mineralization of the terminal Complex ground water is between 3 and 6.5 g/l and that of the Continental Intercalary are 1.8 and 8.7 g / l, so it is an obstacle on its use.To highlight the origins of this mineralization, we used the hydrochemical tool. And chemical analysis in our possession, were processed using the software "Statistica", which allowed us to perform a principal component analysis (PCA), the latter showed a competition between chlorinated water sodic or Mg and calcium bicarbonate waters, rich in potassium to the CT, while for the CI was a competition between the chlorinated sodium or calcium magnesium-sulfated waters and waters. The performed thermodynamic simulation showed a variation of saturation indices that do not exceed zero, for the waters of both CT and CI complex, indicating a saturation in vis-à-vis water minerals, highlighting the influence of formations in outcrop on the quality of water.However, we note that these waters are acceptable for irrigation of plants, but should be handled (demineralized) before they are distributed to consumers.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • PHYSICO-CHEMICAL AND BACTERIOLOGICAL CHARACTERIZATION OF WASTEWATER
           TREATMENT PLANT IN THE CITY DAR EL GUEDDARI (MOROCCO)

    • Authors: A. AYYACH, R. FATHALLAH, E.M. HBAIZ, Z. FATHALLAH, H. CHOUKI, A. EL MIDAOUI
      Abstract: This study focuses on evaluating the effectiveness of treatment of wastewater treatment plant (WWTP) from Dar El Gueddari purification station natural lagoons kid during Junuary and October 2013. In our work we studied the physico-chemical parameters and bacteriological parameters in raw and treated wastewater from the station. For this, we performed a series of measures such as: temperature, pH and conductivity, the biochemical oxygendemand BOD5, the chemical oxygen demands COD and suspended matter MES, the Kjeldhal NTK nitrogen, total phosphorus ptot and fecal coliforms (FC).The rejection of the WWTP from Dar El Gueddari complies with a percentage of 50% in BOD5, 10% in COD and 90% in TSS discharge standards of WWTP commissioned prior publication of Decree N° 06 of 1607 – July 25, 2006.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • URBAN EXPANSION AND ITS IMPACT ON WATER RESOURCES USING REMOTE SENSING AND
           GIS: CASE OF GREAT TUNIS.

    • Authors: S. SAIDI, S. AMMAR, F. JLASSI, S. BOURI
      Abstract: The main objective of this work is to study the effects of urbanization on water resources in the Great Tunis, who knows a huge problem of anarchic urban expansion. To highlight the spatial and temporal variation in urban areas the classification of satellite images was used for various periods (1987-2013) through remote sensing software. This classification demonstrate a twice increase of urban surface.Using hydrologic equation and Geographical Information System (GIS) runoff and infiltrated water quantities are calculated in Greater Tunis basin allowed us to estimate the impact of urban expansion. The application shows that urban expansion caused disturbances on groundwater and essentially changes in water characteristics such as flow, rates and quality and infiltration rates.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • THE WATER CRISIS IN WILAYA MASCARA (NORTHWESTERN ALGERIA): DIAGNOSIS AND
           PROSPECTS

    • Authors: S. BEKKOUSSA, B. BEKKOUSSA, H. AZZAZ
      Abstract: Despite all the hydraulic infrastructures and groundwater resources at its disposal, the Wilaya of Mascara is suffering from an increasing water stress. The growing water requirements in this region exceed available resources. However, persistent drought, mismanagement, increasing population and an intensification of agriculture activities are all responsible for the reduction of water reserves in the region. Groundwater resources are mobilized mainly from the aquifer system of the Ghriss plain. However, the pressure on the main water resource, in this case the groundwater has led to a quantitative and qualitative degradation of this resource. In addition, and facing an invasive siltation, dams do not fulfill their initial aims. In this context, water managers have opted for a regional water transfer from the desalination station of Mactaa to the towns situated northern of the Wilaya of Mascara, which suffers from a deficit estimated at more than 36000 m3/ Day. In this work we try to diagnose the water situation in the region, considering the national and regional context. The prospects of water situation for this region are also treated based on the plans set by guardianship and water managers responsible for planning at specialized organizations.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • STUDY OF METHYLENE BLUE (MB) ADSORPTION FROM AQUEOUS SOLUTIONS ON
           BIOSORBENT PREPARED FROM ALGERIAN DATTE STONES

    • Authors: O. KHELIFI, I MEHREZ, W. BEN SALAH, F. BEN SALAH, M. YOUNSI, M. NACEF, A.M. AFFOUNE
      Abstract: In this study, the Algerian date stones were evaluated to preparing a biosorbent in order to use them as natural support for removal of methylene blue (MB) from aqueous solutions. In order to clarify the adsorption process, the batch experiments were performed to study the effect of operating parameters on the adsorption process such as: the biosorbent dose (2-20 g/L), the initial concentration in BM (10-100 mg/L), the contact time (10-120 min) and temperature (25-55 °C) were studied. To describe the adsorption equilibrium, the experimental data were analyzed by the Langmuir and Freundlich isotherms. Equilibrium is perfectly described by the Freundlich model whose correlation coefficient is greater than 0,99. Thermodynamic parameters such as Gibbs free energy (ΔG0), enthalpy (ΔH0) and entropy (ΔS0) were also assessed and showed that the adsorption process was spontaneously feasible and endothermic. The results of this study show that the date stones can be advantageously used as a biosorbent low cost for removal of methylene blue from water and wastewater.
      PubDate: 2016-12-26
      Issue No: Vol. 0 (2016)
       
  • A MULTICRITERIA APPROACH TO STUDY GENESIS OF SALTED GROUNDWATER, NORTHERN
           JEFFARA (SOUTH-EASTERN TUNISIA)

    • Authors: M. BEN ALAYA, R. KHOUNI, T. ZEMNI, S. KHMERI, F. ZARGOUNI
      Abstract: A multi-disciplinary study comprising boreholes, geophysical and geochemical analyses are used tooutline aconceptualhydrogeochemicalmodel of northern Jeffara groundwater, largely influenced by tectonic. The study of subsurface datademonstratedthat the passageof Saharianstable platform toAtlasdomain is marked by fracturation affecting several geological formations nearsebkhas. Indeed, contaminationof groundwater is probably resulting from rise of deepsalt waterthrough tectonicdisharmonyand saltwater intrusion from the sebkhas by means of fractured carbonate formation. Moreover, the groundwaters quality is characterized by geochemical interactions: cationic exchange and the precipitation/dissolution process of minerals in the aquifer formations.
      PubDate: 2016-12-21
      Issue No: Vol. 0 (2016)
       
 
 
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