WorldCat Identities

Cabassud, Corinne (1961-....).

Overview
Works: 43 works in 73 publications in 2 languages and 106 library holdings
Roles: Thesis advisor, Opponent, Other, Author, Editor
Classifications: TD145, 628
Publication Timeline
.
Most widely held works by Corinne Cabassud
L'eau à découvert by Luc Abbadie( )

2 editions published in 2017 in French and held by 27 WorldCat member libraries worldwide

Indispensable à la régulation du climat, au développement de la vie sur Terre, au maintien des écosystèmes, aux populations, au développement de l'agriculture, de l'industrie comme à la production d'énergie, l'eau est un élément vital. Il convient donc, dans un contexte de changement global, d'analyser dans toute sa diversité la place et le rôle de l'eau et de se donner ainsi les moyens de mieux la préserver. Autour de cet enjeu qui engage toute l'humanité, Agathe Euzen, Catherine Jeandel et Rémy Mosseri ont réuni près de cent cinquante contributions, visant à apporter un éclairage sur chacun des domaines et des approches que couvre cette thématique. Quelle est l'origine de l'eau? Son rapport avec l'apparition de la vie? Quel rôle a-t-elle joué dans l'histoire de la planète et dans le développement de la vie végétale, animale et humaine? Quel est son cycle? Quelles sont ses propriétés chimiques? Comment les sociétés se sont-elles emparées de cet élément précieux? Allons-nous manquer d'eau? L'eau est-elle source de conflits? Comment l'eau est-elle gérée? Comment recycle-t-on une eau polluée? Quels sont les risques pour la santé mondiale? Quels sont les grands enjeux liés à l'eau au xxie siècle? Comprendre et proposer des solutions à ces défis majeurs est l'intention de cet ouvrage
Environmental technologies and trends : international and policy perspectives by Ravi Jain( )

5 editions published between 1996 and 2013 in English and Undetermined and held by 13 WorldCat member libraries worldwide

The book covers contemporary environmental issues related to such subjects such as: drinking water, air pollution, waste water, hazardous waste and groundwater, and it focusses on current research activities, emerging technologies and future trends. For each major topic area, an overview paper covers the current state of the technology. The individual papers were independently reviewed by scientists and engineers knowledgeable in the field and complemented by summaries that include references to other related work, and additional technical discussion or comments about the subject matter. An introductory chapter in English and French provides an overview of all the papers and summarizes crucial issues presented in the papers and their interrelationship
Etude des rétrolavages assistés par l'air et contrôle du colmatage résiduel : application à la production d'eau potable en filtration frontale by Pierre-Jean Remize( Book )

3 editions published between 2006 and 2007 in French and held by 3 WorldCat member libraries worldwide

This study lies within the frame of backwash performance enhancement during drinking water production by ultrafiltration. To do so, an air-assisted backwash process has been developed and studied at different scales of time and membrane module during the filtration of waters presenting different qualities. The study of air-assisted backwash performances and fouling/fouling removal mechanisms during the filtration of a synthetic suspension of bentonite and several natural waters allowed to define a new notion of fouling : the residual particulate fouling. This residual particulate fouling reveals itself to be one of the main responsible of permeability fall during the long-term filtration of a surface water. It can be limited, or even avoided, by the introduction of air-assisted backwashes in the process, without any increase of energetic consumption. Different strategies of process management can thus be set up, depending on backwash operating conditions. A qualitative hydrodynamic study, at the scale of a single hollow-fibre, of the gas-liquid flows taking place during these air-assisted backwashes also allowed to give the basis for the understanding of fouling removal mechanisms and the role of air on these mechanisms
Microfiltration tangentielle et séparation de biomasse : Application aux bioréacteurs à membrane en dénitrification des eaux by Corinne Cabassud( Book )

3 editions published in 1986 in French and held by 3 WorldCat member libraries worldwide

CONCEPTION D'UNE INSTALLATION COUPLANT UNE CELLULE PLANE DE MICROFILTRATION TANGENTIELLE ET D'UN FERMENTEUR (COUPLAGE BIOREACTION/FILTRATION). ETUDE DE L'INFLUENCE DE CONDITIONS OPERATOIRES (CONCENTRATION, VITESSE DE CIRCULATION ET PRESSION) MENANT A UNE MODELISATION DE LA FILTRABILITE
Procédés hybrides à membranes pour le prétraitement d'eau de mer avant dessalement par osmose inverse by Chatkaew Tansakul( Book )

2 editions published in 2009 in French and held by 2 WorldCat member libraries worldwide

This thesis emphasizes on an innovative integrated approach of membrane processes. The main objective is to study the seawater pretreatment process before seawater reverse osmosis (SWRO) desalination for reducing the fouling potential of water towards RO membranes. The approach followed in this study is to compare different hybrid membrane processes: the coagulation combined with ultrafiltration (UF) and the adsorption combined with ultrafiltration, at different operating conditions and with different coagulants and adsorbents. Consequently, lab- and pilot-scale experiments were carried out with real seawater from Mediterranean Sea. The effect of permeate quality on the performance of RO membrane cannot be distinguished for lab-scale short term experiments whatever the pretreatment process (UF alone or hybrid process/UF) used. High salt retention, low organic concentration in the RO permeate and gradual fouling due to salt and organic matter deposit are observed. The hybrid process Powdered Activated Carbon adsorption/UF leads to particularly interesting results: low SDI3, high organic matter retention rate (70 %) and low UF membrane fouling. Furthermore, the study of this hybrid process carried out in cross-flow filtration showed that an increase of cross-flow velocity allows reducing more the fouling. Concerning the hybrid processes coagulation/UF, the results showed that coagulation/UF allows decreasing the SDI3, significantly reducing the fouling. Nevertheless, it performs low improvement in organic matter retention rate (23 %)
Rôle des nanoparticules organiques dans le colmatage membranaire : application au traitement d'eaux usées urbaines par biopéacteur à membranes by Benoît Teychené( Book )

2 editions published in 2008 in French and held by 2 WorldCat member libraries worldwide

Le traitement des eaux usées urbaines constitue une phase importante de la gestion globale des ressources en eau. Le bioréacteur à membranes est une option de choix pour répondre à cette demande. Ce procédé de traitement présente plusieurs avantages par rapport aux procédés classiques à boues activées mais reste confronté à l'un des problèmes majeurs de la filtration membranaire : le colmatage de la membrane. De nombreuses études ont mises en évidence l'impact néfaste sur la filtration de composés contenus dans le liquide interstitiel des boues activées définis comme des colloïdes ou des composés solubles. Cependant dépendant des nombreuses conditions opératoires rencontrées dans les bioréacteurs à membranes, les résultats sont encore contradictoires. Ainsi une meilleure identification des composés problématiques et des mécanismes de colmatage est nécessaire afin de mieux optimiser les conditions opératoires et les opérations de maintenances. C'est pourquoi cette étude s'attache à identifier les principaux composés colmatants contenus dans la fraction non particulaire d'échantillons de boues activées réelles, à étudier la modification des dépôts de filtration induite par l'ajout de particules synthétiques submicroniques et à suivre la formation des dépôts in situ par mesure de différence de potentiel électrique transmembranaire. Les résultats soulignent l'important rôle dans le colmatage membranaire jouer par les biopolymères organiques, plus précisément la structure de type protéines des ces composés. Il a été montré que ces composés induisent des dépôts très résistants, réversibles et très compressibles. De plus, nous avons montré que l'ajout de particules submicroniques au sein de ces dépôts à pour principal impact de modifier la compressibilité de ces dépôts et d'augmenter la rétention indépendamment des interactions prenant lieu entre les particules et les matières organiques. Cette étude ouvre donc sur la possibilité de réduire les doses de composés chimiques utilisés pour limiter le colmatage en prenant en compte les effets de structuration des dépôts. De plus les résultats montrent, que pour des matrices organiques relativement simples, la possibilité de suivre la formation de dépôts colmatants par mesure de potentiel électrique. Cependant de plus amples expériences doivent être réalisées afin d'interpréter le signal électrique lors de la filtration de fluides biologiques complexes
Couplage échange d'ions et ultra-filtration dans un réacteur à membrane pour l'élimination de métaux de l'eau modélisation et simulation by Véronica Flores-Borrel( Book )

2 editions published in 1999 in French and held by 2 WorldCat member libraries worldwide

CETTE ETUDE CONCERNE UN PROCEDE PERMETTANT D'ELIMINER DES IONS METALLIQUES EN SOLUTION PAR COUPLAGE ECHANGE D'IONS ET ULTRAFILTRATION TANGENTIELLE DANS UN REACTEUR A MEMBRANES A PARTICULES MOBILES. IL S'AGIT DE METTRE EN CIRCULATION DANS LE REACTEUR DES PARTICULES ECHANGEUSES D'IONS AVEC LES EFFLUENTS CONTENANT LES METAUX A FIXER. LES PARTICULES CHARGEES EN IONS METALLIQUES SONT ENSUITE SEPAREES DE L'EAU ET RETENUES PAR LES MEMBRANES D'ULTRAFILTRATION. UN PERMEAT PROPRE EXEMPT DE PARTICULES ET PRESENTANT DE FAIBLES CONCENTRATIONS EN METAUX EST DONC OBTENU TANDIS QUE LE CONCENTRAT EST RECYCLE DANS LE REACTEUR. UNE ETUDE CINETIQUE ET UNE ETUDE DE SEPARATION DE PARTICULES ECHANGEUSES D'IONS ONT ETE REALISEES POUR LA FIXATION DU CUIVRE PAR DES RESINES CATIONIQUES IRP 69. LES LOIS CINETIQUES ET DE FILTRATION ONT ETE INTEGREES DANS UN MODELE DECRIVANT DE MANIERE SATISFAISANTE LE REACTEUR A MEMBRANES A PARTICULES MOBILES. UNE SIMULATION DU REACTEUR A ETE REALISEE AFIN D'OBTENIR LES CONDITIONS OPERATOIRES OPTIMALES PERMETTANT D'ATTEINDRE LA NORME IMPOSEE PAR LA LEGISLATION SUR LES REJETS INDUSTRIELS. UNE ETUDE COMPARATIVE ENTRE LA TECHNOLOGIE A LIT FIXE ACTUELLEMENT UTILISEE POUR L'ECHANGE D'IONS ET LE REACTEUR A MEMBRANE A LIT MOBILE DE PARTICULES DEMONTRE L'INTERET DU PROCEDE ET EN PARTICULIER SA FAIBLE CONSOMMATION ENERGETIQUE
Conception d'une filière intensifiée par membrane pour le dessalement autonome d'eau de mer : étude du prétraitement et de son effet sur le biocolmatage by Mathias Monnot( Book )

2 editions published in 2015 in French and held by 2 WorldCat member libraries worldwide

Seawater reverse osmosis (RO) desalination appears to be one of the solutions to fresh water scarcity in coastal regions. In order to make the process more efficient, more reliable and more sustainable, the reduction of RO membrane biofouling remains a major scientific issue. The interest to solve this issue is especially important for small-scale seawater desalination plants powered by photovoltaic energy aimed at supplying water to remote regions. In this context, this work aimed at designing a membrane-based intensified process for these small stand-alone and mobile installations. This process was composed by a granular activated carbon (GAC) filtration followed by ultrafiltration (UF) as a pretreatment to RO for the reduction of its biofouling. First at lab-scale, adsorption kinetics and isotherms of six different GAC enabled to select the GAC with the best marine dissolved organic carbon (DOC) adsorption performance. This reduced the quantity of nutrients available for microorganisms. A semi-industrial fixed-bed GAC filter operated with the selected GAC showed on short-term that DOC concentration in real seawater was highly reduced and that all DOC fractions were adsorbed. The UF of GAC-pretreated seawater at lab-scale revealed that UF was less subject to fouling than with raw seawater. This combination of processes was then set up on a containerized RO desalination prototype. The RO performance obtained over several weeks were stable in terms of rejection rate, permeate flux and pressure drop. Such results were attributed to the efficiency of the pretreatments to reduce the biofouling potential of seawater. In addition, a recovery rate of over 50% has been fixed which significantly reduced the energy consumption of the installation
Etude de la distillation membranaire sous vide pour le dessalement d'eau de mer : de l'analyse des mécanismes de transfert à l'optimisation énergétique du procédé by David Wirth( Book )

2 editions published in 2002 in French and held by 2 WorldCat member libraries worldwide

The aim of this thesis was to study the feasibility of vacuum membrane distillation process for seawater desalination. The first part shows different experimental results obtained with hollow fibre modules containing macro-porous membranes. Two module configurations, inside/out and outside/in, were investigated in order to determine the influence of hydrodynamics on heat and mass transfer. The influence of concentration and temperature polarisation on permeate flux was characterised. In a second part of the study, a modelling of transfer phenomena was developed and validated by experimental results. Longitudinal profiles of temperature and concentration were considered. Two plant design were considered and an analysis of energy consumption, for these plants, allow us to conclude on the potentiality of VMD for water desalination, in comparison with reverse osmosis
DECOLMATAGE DE MEMBRANES D'ULTRAFILTRATION PAR UN ECOULEMENT INTERMITTENT GAZ - LIQUIDE. APPLICATION A LA PRODUCTION D'EAU POTABLE by Stéphanie Laborie( Book )

2 editions published in 1998 in French and held by 2 WorldCat member libraries worldwide

Cette etude concerne un nouveau procede permettant de limiter le colmatage par depot lors de l'ultrafiltration dans des fibres creuses. Il s'agit de generer des instationnarites dans le concentrat par un ecoulement gaz - liquide pendant la filtration. L'ecoulement gaz - liquide permet de diminuer les resistances de colmatage, pour trois types de suspensions : suspensions de bentonites, de bentonites adsorbees avec des macromolecules organiques et de l'eau de garonne. L'interet de ce procede a l'echelle industrielle est une reduction de la surface membranaire a installer par rapport au procede conventionnel (reduction jusqu'a un facteur 2,8 dans certaines conditions). L'etude a demontre que l'ecoulement gaz - liquide entraine une expansion du depot caracterise par une augmentation simultanee de sa porosite et de son epaisseur. Une etude hydrodynamique a montre que l'ecoulement dans les fibres est un ecoulement intermittent a poches, dans toute la gamme de conditions operatoires. Une banque de donnees des parametres de l'ecoulement, en particulier des contraintes de cisaillement parietales, a ete acquise pour differents fluides dans des capillaires. Ces informations sur l'hydrodynamique ont alors permis l'estimation de differents criteres auxquels la reduction de resistance du colmatage et les caracteristiques du depot ont pu etre reliees
Réutilisation des eaux usées épurées par association de procédés biologiques et membranaires by Matthieu Jacob( Book )

2 editions published in 2011 in French and held by 2 WorldCat member libraries worldwide

In order to be competitive compare to surface water treatments, wastewater reuse needs robust, reliable and profitable combination of technologies. The combination of bioreactors and membrane processes seems to be a promising solution to these challenges. This study focus on the impact of the operating conditions of the secondary treatment (particularly the membrane bioreactor (MBR)) on the nanofiltration (NF) and reverse osmosis (RO) tertiary treatments as well as the fate of micropollutants and microorganisms along the treatment line. Firstly, short term filtration experiments with various NF and RO membranes were performed in order to characterize the interactions between secondary treatment effluents (STE) and membranes. High retentions of micropollutants listed by the European water framework directive were observed. During these short term experiments, RO flux decline is mainly due to an increase of osmotic pressure and then a precipitation of salts that can be solved by controlling the pH and thus the carbonate and phosphate concentration of the STE. In addition, higher flux declines are observed with NF because of a higher irreversible fouling behavior. Secondly, continuous long term tests were performed on a pilot unit combining a MBR and a RO processes. The appropriate selection of operating conditions allowed treating wastewater during more than four months without any maintenance. A linear low flux decline, mainly due to adsorption of organic molecules at the membrane surface was observed. During this filtration period, the MBR/RO process presented very high micropollutant retentions. When micropollutants are injected at higher concentration (simulation of sudden fluctuation of feed composition) into the MBR, a drop of biomass activity combined with soluble microbial products release can be observed. Nevertheless, these peaks of pollution did not cause any additional fouling of MBR as well as RO membranes. MBR/RO process is then a reliable technology that can guaranty high retention and productivity (around 15 L.h-1.m-2) whatever the fluctuations of the feed composition
Caractérisation In-Situ de dépôts formés en filtration membranaire de suspensions particulaires et de biofluides : intéraction entre structure locale et performances du procédé by Patrick Loulergue( Book )

2 editions published in 2012 in French and held by 2 WorldCat member libraries worldwide

Membrane fouling is one of the major drawbacks of membrane bioreactors. This study is thus a contribution to the understanding of the dynamic structuring of complex deposits build-up during dead-end filtration of complex biofluids. Several tools were used to perform in-situ characterization of cake layer structural properties at local scale and to link them to global filtration performances. The electrokinetics properties of the deposit were also investigated. An optical and an acoustic method were used to measure local cake thickness and growth kinetics. The thicknesses given by the two methods were first compared. It was shown that for compact deposits the two different methods lead to the same thickness of the deposit. For more porous deposits, these two methods allow to obtain complementary data at two different depths of the deposits. The influence of operating conditions on cake layer structuring during filtration of modelled particles was evaluated. Using the optical method it was shown that, whatever the operating conditions, the cake structure is not constant in time. Furthermore, a spatial variability of the cake layer thickness might exist especially in the case of weak particle-particle repulsion. Finally, it has been investigated whether the different methods could be applied or not to the case of biofluid filtration. The structural properties of the complex deposits built up during diluted activated sludge filtration were investigated. Cake compressibility was observed at global scale by a monitoring of process performances and was also observed at local scale: cake thickness decreases as TMP increases. Furthermore, at local scale, a spatial variability of deposit structure was found. Particle addition into the biofluid was assessed in order to mitigate compressibility effects
Bioréacteur à membranes immergées pour le traitement des eaux résiduaires urbaines spécificités physico-chimiques du milieu biologique et colmatage by Anthony Massé( Book )

2 editions published between 2004 and 2006 in French and held by 2 WorldCat member libraries worldwide

This study describes and analyses the interactions which exist between the biological medium specificities coming from a submerged Membrane Bioreactor (MBR) and fouling. The MBR was compared with an activated sludge process, both fed with the same urban wastewater. The purification efficiencies of both processes were compared for the same operating conditions and at different sludge ages. The influence of membrane and sludge age on supernatant (soluble polymer, COD) and floc characteristics (diameter, fractal dimension, bound exopolymer, sludge volume index, turbidity) was analysed. Sludge production for both systems were calculated and confronted with models. Moreover, we mentioned the main mechanisms implied in long and short term fouling. Finally, the specific role of soluble/colloidal proteins and polysaccharides on deposit structuring was underlined
Bioréacteurs à membranes à configuration externe : influence de la configuration du procédé sur la structuration des matrices biologiques et le colmatage des membranes by Marlène Stricot( Book )

2 editions published in 2008 in French and held by 2 WorldCat member libraries worldwide

This study describes and analyses the impact of two side-stream membrane bioreactors on (1) the structure and the morphology of the biological aggregates, (2) fouling mechanisms and (3) global performances of the two processes. Two side-stream membrane bioreactors which generate very different shear stresses were compared. The first one was operated in an inside/out crossflow filtration mode with a high liquid velocity (5 m.s-1). The second reactor was working in an outside/in hollow fibre filtration mode with a low liquid velocity (< 0,1 m.s-1). Firstly, the effect of the configuration, in terms of filtration mode and hydrodynamics, on the sludge properties has been characterised for the two reactors. The investigation of the structuration mechanisms and supernatant quality reveals clear differences as well on bioflocs morphology/structure as on supernatant composition (COD, proteins, polysaccharides). The role of soluble /colloidal organics and more specifically of proteins and polysaccharides on (a) fouling ability of the sludge and (b) in situ short term fouling was underlined. The effect of toxic compounds on biological activity and membrane fouling was specifically characterised. At least, global performances of the two bioreactors in long term operation time were studied. The water treatment efficiency, in terms of organics and toxics removal, as well as sludge production of the two processes, was compared
Etude de l'impact de micropolluants pharmaceutiques sur le colmatage des BAM utilisés en traitement des eaux usées urbaines : cas de la carbamazépine by Chengcheng Li( Book )

2 editions published in 2014 in English and held by 2 WorldCat member libraries worldwide

Membrane fouling still remains the main limitation for the development of membrane bioreactor (MBR). In this thesis, the main objective focuses on the effects of pharmaceutical micropollutants which are frequently found in domestic wastewater on MBR fouling. Carbamazepine (CBZ), an anti-epileptic drug, was chosen in this study due to its occurrence in domestic wastewater and persistency in MBR process. The effects of CBZ on MBR fouling were investigated in two different ways of contact, i.e. short-term peak contact and long-term continuous contact. The results showed that during only 3 hours contact with 100 µg L-1 CBZ, the fouling propensity of the sludge increased due to the increase in 100-1000 kDa protein-like substances in the supernatant, which could be completely retained by the MBR membrane and the membranes used in the filterability tests. The increase of 100-1000 kDa protein-like compounds in the supernatant may probably be caused by the bacterial decay when facing the pharmaceutical stress. Besides, the reduced effect was observed for sludge obtained from MBR operated under higher organic loading rate. During the long-term continuous contact, significantly higher MBR fouling rate was observed after the continuous addition of CBZ in the MBR via the feed (90 µg L-1 CBZ in the feed), which could be related to the significant increase of 10-100 kDa protein-like compounds in the supernatant after addition of CBZ. The 10-100 kDa protein-like compounds could accumulate in the biocake, which was formed on MBR membrane surface, modify the biocake structure and change the retention characteristics of MBR. The increase of 10-100 kDa protein-like compounds was probably caused by the defensive response of bacteria when continuously facing the pharmaceutical stress. Slight inhibition of microbial activity was found several days after addition of CBZ in MBR, and then it was stabilized to some constant level due to the acclimation of sludge to the pharmaceutical stress. Similar, significant increase of protein concentration was observed at the beginning several days after addition of CBZ in MBR, then returned to the initial level. No significant change in sludge floc size and polysaccharide concentration in supernatant was found during the long-term continuous contact period. This study could help to enhance the understanding of complex interactions among pharmaceutical micropollutants, activated sludge and MBR fouling
Étude d'un bioréacteur anaérobie à membranes immergées pour le traitement des eaux résiduaires by Manuel Salvador Rodríguez Susa( Book )

2 editions published in 2005 in French and held by 2 WorldCat member libraries worldwide

Un bioréacteur anaérobie à membranes a été étudié comme alternative technologique pour le traitement des eaux résiduaires. L'originalité de ce travail réside dans l'utilisation simultanée d'une biomasse de type granulaire et d'un système de membranes immergées. Le procédé a été étudié en continu pendant 300 jours sous conditions psychrophiles (20°C). Une caractérisation des conditions hydrauliques et de la répartition des particules dans le bioréacteur a été réalisée. Après 300 jours de travail, aucune diminution de la taille des granules microbiens et aucune perte d'activité méthanogène n'ont été observées, ceci démontrant l'intérêt d'un système de rétention immergé par rapport aux filtrations externes tangentielles. Un rendement d'élimination de la matière organique entre 86 et 90% ont été obtenues. La filtration membranaire a contribué significativement à cette élimination, surtout durant les périodes instables de fonctionnement du procédé biologique. Le rôle fondamental joué par les réactions biologiques dans le colmatage de la membrane a été démontré. Les produits microbiens solubles ont été identifiés parmi les molécules responsables d'une partie du colmatage par adsorption de la membrane. Enfin, la concentration en acides gras volatils, indiquant l'accumulation d'intermédiaires réactionnels et la libération de matières en suspensions, est apparu comme un indicateur du potentiel de colmatage
Etude de procédés hybrides pour la nanofiltration de macroémulsions : couplage avec une déstabilisation chimique et avec un écoulement gaz / liquide by Gaëlle Ducom( Book )

2 editions published in 2001 in French and held by 2 WorldCat member libraries worldwide

This study concerns the nanofiltration process applied to cutting oil fluids in the form of macroemulsions treatment. The aim is to enhance this process productivity, which is essentially limited by fouling in the form of oil drops deposit and by polarisation concentration. Both phenomena induce low permeate fluxes. For that, two processes were studied: use of air sparging and coupling with a chemical destabilisation of the emulsion. The first process allows flux enhancement for several kinds of solutions: stabilised or non-stabilised emulsions and clay suspensions. The permeate flux enhancement can reach a factor 2.4 depending on the operating conditions. Two-phase flow in the concentrate compartment of a flat sheet cell was characterised. A data bank of flow characteristics was obtained and wall shear stresses at the membrane surface were determined using an electrochemical method. Flux enhancement in nanofiltration was then linked to some hydrodynamic parameters. On the other hand, in the operating conditions of this study, the second process does not induce flux enhancement, which was partly explained by osmotic phenomena. Several destabilisation mechanisms of the emulsion were identified, depending on the salt concentration
MODELISATION PAR RESEAUX DE NEURONES ET CONDUITE D'UN PILOTE D'ULTRAFILTRATION POUR LA PRODUCTION D'EAU POTABLE by Nathalie Delgrange( Book )

2 editions published in 2000 in French and held by 2 WorldCat member libraries worldwide

This study concerns the development of neural networks to model, simulate and control an ultrafiltration pilot plant for drinking water production. Numerous experimental data were obtained, with a plant filtering Seine river water. Experimental data analysis, performed with different statistical techniques, allowed to identify correlation between some operating conditions, water quality parameters and the pilot performances. Several models were built, combining a knowledge model and neural networks, in order to predict the time-variation of transmembrane pressure during a filtration cycle, then several cycles. Moreover, a sensibility study allowed to identify the main parameters involved in reversible and irreversible fouling. The model that describes long scale fouling formation was used to simulate the process. A strategy was proposed to control the pilot plant, in order to determine the appropriate operating conditions, as a function of the raw water quality, that allows to prevent irreversible fouling formation. The neural network model is then used to predict fouling quantification. The application of this strategy allowed to operate several months without significant fouling and with an increase of the plant productivity
Etude de faisabilité d'un module plan intégrant distillation membranaire et collecteur solaire pour le dessalement autonome et décentralisé d'eau de mer : conception, modélisation et optimisation pour une application aux petites communautés isolées. by Qiuming Ma( Book )

2 editions published in 2019 in English and held by 2 WorldCat member libraries worldwide

Small-scale desalination at the point of use offers a potential access to drinking water to communities living in remote coastal areas or isolated islands. In this dissertation, Membrane Distillation (MD) is the applied technology for the aforementioned application scenario. Moreover, the target places are also often in the lack of stable and centralized heat and power supply, while most of them benefit from high solar radiations. In order to further reduce the system heat loss and to intensify the process, the integration in the same module of flat-sheet distillation membranes for Vacuum MD (VMD) and direct solar heating by flat-plate collector (FPC) appears as a possible option. This study aims to explore the feasibility of this concept and to determine the more favorable design and operating conditions for the target application. The main task in this regard is to reduce electricity consumption (provided by photovoltaic PV panels) and simultaneously improve the energy efficiency and water production throughout the VMD-FPC module. The sensitivity analyses and multi-objective optimizations are conducted based on series of simulations. Results show that the potential daily productivity of the system can reach up to 96 L for a module surface area of 3 m2. A quasi-constant power cost of PV of 4.2 - 5.0 W L-1 is observed, permitting a flexible adjustment of the system capacity. Under a limitation of an average PV power of 130 W, more than 30 L of distillate can be obtained with a surface area of 0.83 m2 on a sunny summer-day in Toulouse, taking the optimized operating parameters and real-world material properties into account
ELIMINATION DE COMPOSES ORGANOHALOGENES VOLATILS A L'ETAT DE TRACES DANS L'EAU PAR DISTILLATION MEMBRANAIRE SOUS VIDE by Nathalie Couffin( Book )

2 editions published in 2000 in French and held by 2 WorldCat member libraries worldwide

L'originalite de cette etude reside dans la perspective d'utilisation d'un contacteur a membrane, la distillation membranaire sous vide (dmv) dans une filiere d'eau potable, en traitement d'affinage. L'objectif est d'eliminer les composes organohalogenes volatils a l'etat de traces dans l'eau et de produire une eau conforme aux valeurs guides europeennes. A l'issue d'une synthese et d'une analyse bibliographique sur les materiaux membranaires poreux puis d'une etude de caracterisation de six membranes planes, les criteres de selection d'une membrane adaptee a la dmv pour l'application concernee sont presentes et discutes. Une modelisation du procede a ete developpee en prenant en compte le couplage du transfert de matiere et de chaleur. Ce modele a ete valide experimentalement. L'influence des principaux parametres operatoires sur les performances du procede a ete caracterisee experimentalement. Puis, une simulation de la dmv a l'echelle industrielle permet de definir les conditions operatoires minimisant la consommation energetique totale de dmv pour un module plan industriel. Les premiers elements de conception d'un module plan industriel sont proposes et compares a ceux d'un module fibres creuses, plus prometteurs. Enfin, cette etude est cloturee par une comparaison technico-economique de la dmv avec des procedes conventionnels et la nanofiltration
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  General Special  
Audience level: 0.00 (from 0.00 for L'eau à d ... to 0.00 for L'eau à d ...)

Environmental technologies and trends : international and policy perspectives
Covers
Languages
French (36)

English (8)