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5 results on '"Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP)"'

1. Performances of RO and NF processes for wastewater reuse: Tertiary treatment after a conventional activated sludge or a membrane bioreactor

Author

Matthieu Jacob, Corinne Cabassud, Christelle Guigui, Gwenaelle Lavison, Laurent Moulin, Hélène Darras, Pôle d′études et de Recherches de Lacq (PERL), Pôle économique 2, TOTAL SA, Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA), Eau de Paris, Direction Recherche et Développement Qualité de l'Eau (DRDQE), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA)

Subjects
General Chemical Engineering, Ultrafiltration, 02 engineering and technology, 010501 environmental sciences, Membrane bioreactor, 01 natural sciences, Membrane technology, [SPI]Engineering Sciences [physics], [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, General Materials Science, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Water Science and Technology, Fouling, [SDE.IE]Environmental Sciences/Environmental Engineering, Chemistry, Mechanical Engineering, Membrane fouling, Environmental engineering, General Chemistry, 021001 nanoscience & nanotechnology, 6. Clean water, Activated sludge, 13. Climate action, Sewage treatment, Nanofiltration, 0210 nano-technology
Abstract

Wastewater reclamation requires processes and technologies having the ability to reduce the presence of micropollutants which are not wholly treated in conventional WWTP. Due to the complexity of membrane–solute interactions and the diversity of secondary treatment effluent (STE) matrices, deeper investigations are required to identify the major foulant species and more specifically their behaviour at high concentration in real waters. This study investigates the rejection and fouling potential of nanofiltration (NF) and low-pressure reverse osmosis (RO) membranes with two STEs sampled from i) a conventional activated sludge process coupled with ultrafiltration (CAS-UF) and from ii) a membrane bioreactor MBR (AquaRM ® , SAUR (France)). Whatever the origin of the effluent, RO seems to be the best solution to prevent pollution of tertiary effluents (expected result) but also to obtain low fouling levels. The different composition and molecular weight distribution of MBR and CAS-UF effluents can explain the different fouling behaviours that were observed.

Published
2010

2. Spring water treatment with ultrafiltration and stripping

Author

Caroline Burgaud, Corinne Cabassud, Jean-Michel Espenan, Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA), Polymem (FRANCE), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)

Subjects
Fouling, Stripping (chemistry), Chemistry, Mechanical Engineering, General Chemical Engineering, Bubble, Environmental engineering, 02 engineering and technology, General Chemistry, 010501 environmental sciences, Pulp and paper industry, 01 natural sciences, 6. Clean water, Membrane technology, 020401 chemical engineering, Mass transfer, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, General Materials Science, Water treatment, 0204 chemical engineering, Secondary air injection, ComputingMilieux_MISCELLANEOUS, Sparging, 0105 earth and related environmental sciences, Water Science and Technology
Abstract

This study focuses on an hybrid process which couples ultrafiltration and stripping. The aim is to treat spring water to disinfect it and to enhance its pH without adding reactants. The first part of the study focused on stripping in a batch stirred reactor without UF. Air was chosen as the stripping gas, and the influence of the air flow rate on the water quality was studied for the stirred reactor and then for the hybrid process. Benefits of gas sparging have previously been pointed out in terms of fouling removal. This study demonstrates that gas sparging can be used to enhance the pH by removing a dissolved compound by gas stripping. Very good mass transfer coefficients are obtained in comparison with conventional systems like the batch stirred reactor or bubble columns.

Published
2001

3. Modelling of ultrafiltration fouling by neural network

Author

L. Durand-Bourlier, C. Cabassud, Michel Cabassud, J.M. Lainé, N. Delgrange, Laboratoire d'Ingénierie des Procédes de l'Energie et de l'Environnement (LIP2E), Université Ibn Zohr [Agadir]-Ecole Nationale des Sciences Appliquées d'Agadir, Laboratoire de génie chimique [ancien site de Basso-Cambo] (LGC), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, Centre International de Recherche Sur l'Eau et l'Environnement [Suez] (CIRSEE), SUEZ ENVIRONNEMENT (FRANCE), Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA), Laboratoire de Génie Chimique (LGC), Centre International de Recherche Sur l'Eau et l'Environnement (CIRSEE), and Suez Environnement

Subjects
Engineering, General Chemical Engineering, Ultrafiltration, 02 engineering and technology, Modelling, Membrane technology, law.invention, 020401 chemical engineering, law, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, General Materials Science, 0204 chemical engineering, Turbidity, Process engineering, ComputingMilieux_MISCELLANEOUS, Filtration, Water Science and Technology, Fouling, [SDE.IE]Environmental Sciences/Environmental Engineering, business.industry, Mechanical Engineering, Membrane fouling, Environmental engineering, General Chemistry, 021001 nanoscience & nanotechnology, Neural network, 6. Clean water, Drinking water production, Water treatment, Water quality, 0210 nano-technology, business
Abstract

International audience; Optimisation of ultrafiltration pilot plants requires a better knowledge of membrane fouling. In the field of drinking water production, phenomena involved in fouling are very complex and interdependent because of the numerous compounds contained in raw waters. As no knowledge model is available for this application, a statistical modelling tool called neural network is used in this paper to predict the total hydraulic resistance at the end of a filtration cycle and after next backwash, using some parameters concerning water quality (turbidity and temperature) and operating conditions, for a given experimental site. Different network structures have been evaluated, using information concerning the current filtration cycle and the previous cycle. Some of them allow a prediction of resistance with a very good accuracy. They take into account as network inlets the permeate flow rate, pressure and water turbidity, and are able to model the effects of reversible fouling on resistance.

Published
1998

4. Fouling control by air sparging inside hollow fibre membranes—effects on energy consumption

Author

L. Durand-Bourlier, C. Cabassud, J.M. Lainé, S. Laborie, Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA), Centre International de Recherche Sur l'Eau et l'Environnement (CIRSEE), Suez Environnement, Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre International de Recherche Sur l'Eau et l'Environnement [Suez] (CIRSEE), SUEZ ENVIRONNEMENT (FRANCE), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
General Chemical Engineering, Ultrafiltration, Flux, 02 engineering and technology, 7. Clean energy, Membrane technology, 020401 chemical engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, General Materials Science, 0204 chemical engineering, Composite material, ComputingMilieux_MISCELLANEOUS, Water Science and Technology, Fouling, [SDE.IE]Environmental Sciences/Environmental Engineering, Chemistry, Mechanical Engineering, Environmental engineering, General Chemistry, 021001 nanoscience & nanotechnology, 6. Clean water, Membrane, 0210 nano-technology, Air sparging, Secondary air injection, Particle deposition
Abstract

Ultrafiltration by hollow fibres has shown to be an efficient process for drinking water production. A new process, based on air sparging inside hollow fibres throughout the filtering period is proposed. The generated gas/liquid two-phase flow inside fibres showed a high efficiency to enhance the stabilised permeate flux, by preventing particle deposition. In some operating conditions, the stabilised permeate flux was more than doubled thanks to the two-phase flow. This paper points out the effects of this process on the membrane productivity and more particularly on energy consumption. Moreover to understand phenomena involved in this flux enhancement, a link is demonstrated between hydrodynamic parameters, such as wall shear stresses, and the stabilised permeate flux.

Published
1998

5. From a new method to consider backwash efficiency to the definition of remaining fouling

Author

C. Guigui, P.J. Remize, C. Cabassud, Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), and Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)

Subjects
Engineering, General Chemical Engineering, Microfiltration, Boiler feedwater, Context (language use), 02 engineering and technology, 7. Clean energy, law.invention, 020401 chemical engineering, law, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, General Materials Science, 0204 chemical engineering, Process engineering, ComputingMilieux_MISCELLANEOUS, Filtration, Water Science and Technology, Fouling, business.industry, Mechanical Engineering, Environmental engineering, General Chemistry, Energy consumption, 021001 nanoscience & nanotechnology, 6. Clean water, Particle, 0210 nano-technology, Air sparging, business
Abstract

In the actual context of the necessity toreduce energy consumption, dead-end filtrationis in expansion as it enables to save circulationenergy in comparison with cross-flow filtration.But the main drawback of dead-end filtration isa high particle deposit velocity at the membranesurface, as all the particles contained in the feedwater are deposited. The extent of membranefouling is thus increased compared to the one incross-flow filtration and a key-point for dead-end process optimisation thus lies in enhancingfouling removal during backwashes. The generalobjective of this study is to increase the back-wash efficiency with a new backwash procedureusing air and water flows, creating a so-called“air-assisted backwash” [1,2]. In ultrafiltrationor microfiltration applications, the methodwhich is commonly used for fouling characteri-sation and for assessment of backwash perfor-mance, is based on an analysis of easilymeasurable process parameters such as mem-brane permeability or resistance. The aim of thispaper is to compare the results obtained withthis classical method to those obtained with anoriginal mass balance method and to apply theconclusions given by this comparison to theultrafiltration of different feed liquids with air-assisted backwashes.

Published
2006

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