Academic literature on the topic 'Colmatage de filtre'
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Journal articles on the topic "Colmatage de filtre":
Nuel, Maximilien, Julien Laurent, Paul Bois, Pascale Chenon, Mohammed Benbrahim, Georges Reeb, Fabien Toulet, Benoît Milliot, Emmanuel Belot, and Adrien Wanko. "Potentialité des zones humides infiltrant des eaux routières dans la nappe rhénane – étude de huit bassins de rétention et d’infiltration à Wolfisheim, Alsace." Revue des sciences de l’eau 29, no. 1 (March 16, 2016): 1–8. http://dx.doi.org/10.7202/1035712ar.
Ivanova, I. E., V. V. Ivashechkin, and V. V. Veremenyuk. "THEORETICAL STUDIES OF THE LEACHING PROCESS OF THE MUDDING ELEMENT IN THE GRAVEL PACKAGE OF THE WELL FILTER USING THE UNIT FOR REVERSE-REAGENT REGENERATION." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 61, no. 1 (January 23, 2018): 80–92. http://dx.doi.org/10.21122/1029-7448-2018-61-1-80-92.
Penicot, von P., D. Thomas, P. Contal, D. Leclerc, and J. Vendel. "Colmatage des filtres fibreux HEPA par des particules solides et liquides d'aerosols: Etude experimentale." Filtration & Separation 36, no. 2 (March 1999): 58. http://dx.doi.org/10.1016/s0015-1882(99)90353-1.
Felberova, L., J. Kucera, and E. Mlejnska. "Experience in non-conventional wastewater treatment techniques used in the Czech Republic." Water Science and Technology 56, no. 5 (September 1, 2007): 149–56. http://dx.doi.org/10.2166/wst.2007.567.
Serrano, Michel, Anne-Claire Vannier, and Pascal Ribéreau-Gayon. "Clarification des vins par filtration en flux tangentiel (ultrafiltration). Incidence sur la composition chimique et les qualités organoleptiques. Evolution des produits au cours du vieillissement." OENO One 22, no. 1 (March 31, 1988): 49. http://dx.doi.org/10.20870/oeno-one.1988.22.1.1256.
Bois, P., J. Laurent, M. Nuel, and A. Wanko. "Indicateurs de colmatage de filtres plantés de roseaux à écoulement vertical : étude comparative de quatre stations de traitement après 10 ans de fonctionnement." Techniques Sciences Méthodes, no. 9 (2015): 43–55. http://dx.doi.org/10.1051/tsm/201509043.
Tret’yak, A. Ya, and V. V. Shwets. "The reagent method of the hydrogeological wells regeneration." Proceedings of higher educational establishments. Geology and Exploration, no. 5 (November 2, 2018): 78–82. http://dx.doi.org/10.32454/0016-7762-2018-5-78-82.
Achak, Mounia, Naaila Ouazzani, and Laila Mandi. "Élimination des polluants organiques des effluents de l’industrie oléicole par combinaison d’un filtre à sable et un lit planté." 24, no. 1 (April 1, 2011): 35–51. http://dx.doi.org/10.7202/045826ar.
Ouf, François-Xavier, Victor-Manuel Mocho, and Sébastien Pontreau. "Colmatage des filtres industriels plissés à Très Haute Efficacité par des aérosols émis en situation d’incendie." Pollution atmosphérique, N°215 (2012). http://dx.doi.org/10.4267/pollution-atmospherique.195.
Amelishko, I. E., and V. V. Ivashechkin. "Technological framework for the reversible chemical regeneration of water wells." Gornyi Zhurnal, November 30, 2020, 76–80. http://dx.doi.org/10.17580/gzh.2020.11.12.
Dissertations / Theses on the topic "Colmatage de filtre":
Benmachou, Kader Schmitz Philippe Meireles-Masbernat Martine. "Étude et modélisation du colmatage d'un filtre plissé." Toulouse : INP Toulouse, 2008. http://ethesis.inp-toulouse.fr/archive/00000698.
Benmachou, Kader. "Étude et modélisation du colmatage d'un filtre plissé." Toulouse, INPT, 2005. https://hal.science/tel-04582023.
The purpose of this work is to develop an approach to simulate numerically the behaviour of the pleated filters, and thus limit the number of experimental tests. The first part of this work concerns the analysis and the modelling of filtration through fibrous media. An experimental study relating to the microstructure of fibrous media and its filtration capacities was carried out. Then, assuming that the particles are captured by sieving, a clogging model was developed. This model describes well the two successive phases of clogging observed in the experiments namely depth filtration and cake filtration. In a second part, the fluid flow, the particle transport and capture are studied and modelled in an elementary pleat and within the complete filter. The validation of the model is carried out by considering both experimental results and CFD simulations using Fluent®. The results are discussed according to the geometrical characteristics of the filter element
Gervais, Pierre-Colin. "Études expérimentale et numérique du colmatage de filtre plissé." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0007/document.
Pleated filters are widely used in air treatments because of the advantageous effective surface to overall dimension ratio they offer. Their major drawback though resides in their reduced lifetime which still needs to be controlled. Indeed, when clogging, the pressure drop considerably increases, the filtration flow is then no longer maintained which might lead to the deterioration of the media. It is then crucial to characterize the evolution of the pressure drop under operating conditions in order to best design these equipments. Part of our work consisted in studying how the operating conditions influence the geometry of the deposit. To do so, we used Single-Photon Emission Computed Tomography (SPECT), a non-destructive imaging technique that keeps intact the particle structuring. The visualization of aerosol deposit at the beginning of the filtration process allows observing preferential particle deposition on the whole height of the pleat. A numerical approach was used to study the permeability of bimodal fibrous media and we experimentally studied the local velocity as well as the biphasic flow inside pleated filter media. Comparison between experiments and simulations allowed us to validate the Geodict code for a wide range of media properties and velocities. Regarding bimodal fibrous media, the fast data acquisition has allowed testing several existing models which resulted in classifying them in a unique way. If the experimental results on the initial deposition in pleated filters are encouraging, those related to beforehand clogging point to several improvements regarding the technique we used
Rolland, Laurence. "Analyses comparatives de systèmes d'infiltration-percolation : colmatage et outils de diagnostics." Montpellier 2, 2009. http://www.theses.fr/2009MON20132.
Seepage beds are widely used for on-site and small communities wastewater treatment. These extensive systems present the advantages of both an easy management and good treatment performances. However, they are sensitive to the physical and biological clogging. Clogging alter the treatment performances but also reduce the service life. The role of materials and conception of filters on the control of the permeability of the filtering bed and regulation of the biomass accumulated remain badly understood. In addition, there is a lack of non-destructive tools in order to perform diagnosis on operating systems. The aim of this thesis is to analyse (at various scales and with different tools, especially non-destructive) the answer of infiltration systems to varying operating conditions that are, namely: (i) the composition of the influent, the seepage bed design (type of sand and its implementation, the presence of a geogrid at the bottom), but also (ii) of the operating parameters (hydraulic load, organic load, and mode of feeding). Results highlight the determining roles (i) of the grain size distribution on hydraulic behaviour and the retention of suspended solids, (ii) and of the feeding mode and organic loads. We estimate the operating state of the systems at different time. We distinguish several non-destructive tools fitted for the diagnosis: the measurement of the gaseous oxygen within soil porosity, the measurement of electrical resistivity. In addition, we determine threshold values that allow to differentiate the different state of the system operation
Rebaï, Mehdi. "Analyse et modélisation de l'écoulement et du colmatage d'un filtre à air pulsé." Toulouse, INPT, 2007. http://ethesis.inp-toulouse.fr/archive/00001553/.
The main objective of this work is the development of a numerical tool allowing the prediction of the clogging of a pleated fibrous filter for air filtration. The study is based on a multi-scale approach from the fiber scale to the pleated filter scale. The work is divided into two parts. The first one deals with the flow field (without particles) inside the fibrous medium and the pleat. The flow model inside a pleat is based on the assumption of a similarity solution. The second part is devoted to the clogging model of a pleated filter, which is obtained by combining the clogging model for a flat fibrous media with the flow model inside the pleat. Clogging of pleated filter is studied with this model, which can also be considered as a computational sizing and design tool. Using the model will reduce the number of trials and therefore the overall time of pleated filter design
Gaillard, Fabrice. "Etude du comportement d'un filtre à gaz autonettoyant par fluidisation." Chambéry, 2003. http://www.theses.fr/2003CHAMS022.
The production of gas of great purity usually requires use of high effectiveness filters, wich change with the time, imposing the need for periodic replacement when they are clogged or their sequential unclogging. Some researches developed on the adjustment of processes allow to control or to limit the clogging of the filter. It is for example the case of the tangential filtration and continuous cleaning by ultrasounds or shock waves. In our study, the process considered is the coupled use of fluidization and filtration. The interest of this process lies in the fact it allows the filtration of a gas while controling the clogging of the filter medium by the action of the fluidized particles friction on it. As a result, only a fraction of the gas is filtered, whereas the remaining one goes over through the bed to maintain the fluidization. The filter zone can occupy the whole or part of the fluidized bed. It can consist of filter elements immersed in the bed or by elements forming the walls of the bed. So, a parallel assembly, like a filter press employed in water treatment, can be used. The flow of a part of the gas through the filter medium leads to a vertical velocity gradient, which modifies the aspect of the fluidization and leads to a particular hydrodynamics of this process. The principle of the process is the following : the gas to be treated enters the lower part of the module. The grains of the bed, fluidized by the inflowing gas, are imparted a random movement. Some grains therefore come into contact with the filter wall. By rubbing on this wall they scrape the particle cake, therby limiting its formation on the filter surface. The aggregates of particles removed from the filter wall are then entrained towards the top of the bed. Consequently, part of the gas passing trough the filtering element is totally purified while the remaining fraction of the gas crosses the entire heigh of the fluidized bed and it concentrates in particles
Le, Maout-Alvarez Coralie. "Étude expérimentale des effets chimiques sur le colmatage des filtres dans l’industrie nucléaire." Electronic Thesis or Diss., Université de Lorraine, 2023. http://docnum.univ-lorraine.fr/ulprive/DDOC_T_2023_0015_ALVAREZ.pdf.
During a LOCA accident (Loss Of Coolant Accident) occurring to a nuclear Pressurized Water Reactor (PWR), debris are generated and can be partially transported to the RIS-EAS filter in the sumps located in the bottom of the nuclear reactor containment. These debris can contribute to the « physical » clogging of the filters. Another effect called « chemical effects » corresponds to the presence of cations in solution resulting from the debris' corrosion and the possible corrosion of the metal surface present in the reactor containment vessel. In the case of a severe accident with core fuel meltdown, additional loads debris are to be considered as presence of particles formed of structural materials, control rod material, fission products and concrete particles resulting from corium-concrete interaction. To ensure the long term liquid recirculation functionality, the chemical effect have to be understood: nature of these chemical effects, conditioning parameters and potential effect on the clogging. The thesis aims at studying the chemical effects after designing a dedicated experimental loop: a parametric approach , coupled with several chemical and pressure drop measurements. Chemical speciation in solution and precipitate characterizations will/can be respectively performed by ICP and MEB-EDX, DRX and XPS techniques
Bessière, Yolaine. "Filtration frontale sur membrane : mise en évidence du volume filtre critique pour l'anticipation et le contrôle du colmatage." Toulouse 3, 2005. http://www.theses.fr/2005TOU30142.
Castaing, Jean-Baptiste. "Procédés de traitement de l'eau de mer en conchyliculture pour la sauvegarde et le maintien de la qualité des mollusques bivalves." Nantes, 2011. http://archive.bu.univ-nantes.fr/pollux/show.action?id=4e84b101-063c-4e23-81e3-061f5f18860e.
The aim of this work is the study of seawater filtration process to preserve commercial bivalves and maintain their quality during harmful algal blooms. The originality of this work is based on the study of rustic processes, capable of removing toxic microalgae from seawater. Two filtration processes have been studied, the immersed hollow fibres membranes and a sand filter. The origin and nature of fouling mechanisms have been identified in connection with the selectivity and energy consumption. Suspensions of toxic and nontoxic microalgae were reconstituted and then filtered through 10 kDa, 300 kDa and 0. 2 μm membranes and a sand filter (mean grain diameter “dg” equal to 250-520 μm). Microfiltration membrane 0. 2 μm has emerged as the most suitable for the filtration of seawater : more than 99 % of micro-algae were eliminated for a specific energy consumption below 0. 5 kWh/m3. Fouling mechanisms were investigated by membranes autopsies and the use of membrane filtration models. Sand filtration does not allow to retain all microalgae. Nevertheless, a decrease in the average size of sand grains significantly increases the toxic micro-algae retention (Rejection rate equal to 90 % after 6 h of filtration with dg = 256 μm). Sand filtration does not allow a total retention of toxic microalgae, then it can only be proposed as a seawater pretreatment system before membrane filtration. Despite a higher cost, immersed hollow fibres membranes can be considered for the protection of shellfish basins
Farkouh, Bassam. "Le filtre géosynthétique dans les ouvrages de drainage : essais de laboratoire et observations in situ." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10204.
Book chapters on the topic "Colmatage de filtre":
STOLTZ, Guillaume. "Les géosynthétiques filtres : emploi, retours d’expérience et recherches actuelles." In Les géosynthétiques d’hier à aujourd’hui, 151–89. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.8175.ch5.