Etude Dun Procede De Denitrification In Situ Des Eaux Souterraines

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Etude d'un procédé de dénitrification "in situ" des eaux souterraines

Download Etude d'un procédé de dénitrification

Author : Michel Hamon
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis Etude d'un procédé de dénitrification "in situ" des eaux souterraines by : Michel Hamon

Download or read book Etude d'un procédé de dénitrification "in situ" des eaux souterraines written by Michel Hamon and published by . This book was released on 1990 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE PRINCIPE DU PROCEDE CONSISTE A INJECTER DANS UNE NAPPE PHREATIQUE, A PROXIMITE D'UN PUITS DE CAPTAGE D'EAU POTABLE, UN SUBSTRAT CARBONE SUSCEPTIBLE DE FAVORISER LE DEVELOPPEMENT D'UNE FLORE BACTERIENNE DENITRIFIANTE ENTRE LES POINTS D'INJECTION DU SUBSTRAT CARBONE ET LE PUITS. L'ELIMINATION DES NITRATES CONTENUS DANS LA NAPPE DEPEND DE LA NATURE DU SUBSTRAT, DE LA QUANTITE DE CARBONE INJECTEE ET DU TEMPS DE SEJOUR. UNE ETUDE HYDROGEOLOGIQUE DU SITE RETENU ET UNE ETUDE AU LABORATOIRE SUR UN PILOTE CONSTITUE DE MATERIAUX PRELEVES DANS L'AQUIFERE, ONT PERMIS DE DETERMINER LA CONFIGURATION, LES DIMENSIONS ET LES PARAMETRES DE FONCTIONNEMENT DU DISPOSITIF: CONFIGURATION CIRCULAIRE DE 30 PUITS D'INJECTION DISPOSES A 25 M DU PUITS DE CAPTAGE POUR UN DEBIT DE POMPAGE DE 30 M#3/H ET ELIMINATION TOTALE DES NITRATES AU BOUT D'UNE SEMAINE, AVEC UN APPORT D'ETHANOL DENATURE CORRESPONDANT A UN RAPPORT C/N=1,25 ET UN TEMPS DE SEJOUR DE 0,95 J. EN GRANDEUR REELLE, LES MEILLEURS RENDEMENTS D'ELIMINATION DES NITRATES (RABATTEMENT DE 70 MG NO##3/L) ONT ETE OBTENUS POUR UN DEBIT DE POMPAGE DE 30 M#3/H FONCTIONNANT SUR UN CYCLE 1 H/1 H. DES RENDEMENTS IDENTIQUES ONT PU ETRE ACQUIS EN REDUISANT A 15 LE NOMBRE DE PUITS D'INJECTION

Etude comparative de la faisabilité industrielle de procédés biologiques de dénitrification

Author : Christophe Gerbier
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Etude comparative de la faisabilité industrielle de procédés biologiques de dénitrification by : Christophe Gerbier

Download or read book Etude comparative de la faisabilité industrielle de procédés biologiques de dénitrification written by Christophe Gerbier and published by . This book was released on 1996 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: AU COURS DE CETTE RECHERCHE TROIS PROCEDES BIOLOGIQUES DE DENITRIFICATION DES EAUX A POTABILISER ONT ETE TESTES DANS LE BUT DE DETERMINER LEUR FAISABILITE INDUSTRIELLE SUR DES EAUX SOUTERRAINES : _ LE PREMIER UTILISE DES MICRO-ALGUES IMMOBILISEES DANS DES POLYSACCHARIDES DE TYPE ALGINATE. CE PROCEDE AVAIT FAIT L'OBJET D'UN BREVET APRES DES ETUDES EN LABORATOIRE A PETITE ECHELLE. IL S'AGISSAIT D'ETUDIER SES PERFORMANCES A PLUS GRANDE ECHELLE ET SUR DES EAUX NATURELLES. LES RESULTATS OBTENUS TANT AU NIVEAU DE LA STABILITE DE LA MATRICE D'IMMOBILISATION QUE DES PERFORMANCES D'ELIMINATION DES NITRATES NE PERMETTENT PAS D'ENVISAGER UNE APPLICATION INDUSTRIELLE DANS L'IMMEDIAT. _ LE SECOND MET EN JEU DES BACTERIES HETEROTROPHES FIXEES, AVEC DE L'ETHANOL COMME SUBSTRAT CARBONE. IL A PERMIS D'ADAPTER LA TECHNOLOGIE DE LIT FIXE DE LA SOCIETE CISE AUX CONTRAINTES IMPOSEES PAR LA DENITRIFICATION D'EAUX A POTABILISER. LES RESULTATS OBTENUS REPONDANT AUX ATTENTES (CHARGE ELIMINEE : 1,4 KG D'AZOTE NITRIQUE PAR METRE CUBE ET PAR JOUR POUR UN RENDEMENT DE DENITRIFICATION DE 80 A 100 POUR CENT), CE PROCEDE EST EN COURS D'AGREMENT AVANT DEVELOPPEMENT INDUSTRIEL. _ LE DERNIER FAIT INTERVENIR DES BACTERIES AUTOTROPHES FIXEES, AVEC UN COMPOSE SOUFRE SOLUBLE (LE THIOSULFATE DE SODIUM) COMME SOURCE D'ENERGIE. LES PERFORMANCES ENREGISTREES A MOYENNE ECHELLE (CHARGE ELIMINEE : 1,93 KG D'AZOTE NITRIQUE PAR METRE CUBE ET PAR JOUR POUR UN RENDEMENT DE DENITRIFICATION DE 80 A 100 POUR CENT) PERMETTENT D'ENVISAGER UN DEVELOPPEMENT A PLUS GRANDE ECHELLE ET DES ESSAIS SUR DES EAUX DE SURFACE.

Agrindex

Author :
Publisher :
ISBN 13 :
Total Pages : 860 pages
Book Rating : 4.E/5 ( download)

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Download or read book Agrindex written by and published by . This book was released on 1994 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

DENITRIFICATION BIOLOGIQUE HETEROTROPHE APPLIQUEE AU TRAITEMENT DES EAUX D'ALIMENTATION

Author : SYLVIE.. DUPAIN
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (49 download)

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Book Synopsis DENITRIFICATION BIOLOGIQUE HETEROTROPHE APPLIQUEE AU TRAITEMENT DES EAUX D'ALIMENTATION by : SYLVIE.. DUPAIN

Download or read book DENITRIFICATION BIOLOGIQUE HETEROTROPHE APPLIQUEE AU TRAITEMENT DES EAUX D'ALIMENTATION written by SYLVIE.. DUPAIN and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL A CONSISTE EN LA MISE AU POINT D'UN PROCEDE DE DENITRIFICATION D'UNE EAU DE NAPPE SOUTERRAINE A FORTE TENEUR EN NITRATES (50 A 100 MG/L), AUSSI SIMPLE ET PEU COUTEUX QUE POSSIBLE DE FACON A PERMETTRE SON IMPLANTATION EN ZONE RURALE. LA FILIERE DE TRAITEMENT QUI A ETE RETENUE EST LA FILIERE BIOLOGIQUE DE REDUCTION HETEROTROPHE DES NITRATES A BASSE TEMPERATURE (10 A 12C) SOUS L'ACTION DE BACTERIES DENITRIFIANTES OXYDANT L'ETHANOL, IMPLANTEES DANS UN DISPOSITIF BASE SUR LE PRINCIPE DU LIT BACTERIEN IMMERGE. LA PRINCIPALE DIFFICULTE AU COURS DE CE TRAVAIL A ETE LE COLMATAGE DES DISPOSITIFS, DU AU DEVELOPPEMENT DES MICROORGANISMES DANS LES REACTEURS. UNE METHODE DE CONTROLE DU DEVELOPPEMENT BACTERIEN AU COURS DU PROCEDE DE DENITRIFICATION A DONC ETE MISE AU POINT POUR L'EVITER, SANS AVOIR A LAVER LES REACTEURS. LE TRAVAIL EXPERIMENTAL S'EST DEROULE EN TROIS ETAPES. LA PREMIERE A CONSISTE EN LA SELECTION D'UNE SOUCHE BACTERIENNE DENITRIFIANTE ISSUE DU MILIEU NATUREL NE RELARGUANT NI NITRITE, NI PROTOXYDE D'AZOTE AU COURS DE LA DENITRIFICATION DE L'EAU APPORTEE, AFIN DE NE PAS NUIRE A L'ENVIRONNEMENT. LA DEUXIEME A CONSISTE EN LA CREATION D'UN REACTEUR DE DENITRIFICATION BIOLOGIQUE DE LABORATOIRE ET EN LA DEFINITION DE SES CARACTERISTIQUES DE FONCTIONNEMENT. LA DENITRIFICATION COMPLETE DE L'EAU A TRAITER ET LA MAITRISE DU COLMATAGE RENCONTRE ONT ETE OBTENUS A CE STADE. LA TROISIEME ETAPE A ALORS CONSISTE EN LA CREATION D'UN PILOTE ET SA MISE EN FONCTIONNEMENT EN CONDITIONS NATURELLES AFIN DE VALIDER LES RESULTATS OBTENUS AU LABORATOIRE. APRES UN MOIS DE MISE AU POINT TECHNIQUE, LE PILOTE A DELIVRE UNE EAU AUX TENEURS EN AZOTE CONFORMES A LA LEGISLATION DES EAUX DE CONSOMMATION

Aqua

Author :
Publisher :
ISBN 13 :
Total Pages : 960 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Aqua by :

Download or read book Aqua written by and published by . This book was released on 1990 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Nouveau procédé de dénitrification des eaux par le fer métallique

Author : Bénédicte Coutière
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (799 download)

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Book Synopsis Nouveau procédé de dénitrification des eaux par le fer métallique by : Bénédicte Coutière

Download or read book Nouveau procédé de dénitrification des eaux par le fer métallique written by Bénédicte Coutière and published by . This book was released on 1999 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: UN NOUVEAU PROCEDE DE DENITRIFICATION BIOLOGIQUE A ETE MIS AU POINT. CE PROCEDE EST UN PROCEDE AUTOTROPHE A BASE DE FER METALLIQUE QUI MET EN JEU LA CORROSION DU FER ET FAIT INTERVENIR AU DEPART UN PROCESSUS PUREMENT PHYSICO-CHIMIQUE. IL EST RELAYE ENSUITE PAR UN SYSTEME BIOLOGIQUE COMPLEXE QUI FAIT INTERVENIR LES QUATRE CYCLES PRINCIPAUX : DE L'AZOTE, DU FER, DU SOUFRE ET DU CARBONE. AUCUN AJOUT DE SUBSTRAT CARBONE N'EST NECESSAIRE. LE CARBONE MINERAL DE L'EAU SUFFIT. LE SYSTEME ET REGULE PAR VOIE BIOLOGIQUE ET LE PARAMETRE LE PLUS IMPORTANT EST LE TEMPS DE CONTACT EAU FER. LA QUALITE DE L'EAU EST LEGEREMENT MODIFIEE PUISQU'ON OBSERVE UN LEGER ADOUCISSEMENT DE L'EAU. CET ADOUCISSEMENT EST FONCTION DU RENDEMENT DE DENITRIFICATION OBSERVE ET LES PRECIPITES OBTENUS PEUVENT ENTRAINER UN COLMATAGE IMPORTANT DU REACTEUR DE DENITRIFICATION. DIVERSES SOLUTIONS ONT ETE TESTEES POUR PREVENIR CE COLMATAGE. UNE ACIDIFICATION DE L'EAU AVANT PASSAGE DANS LE REACTEUR SEMBLE LA SOLUTION LA PLUS PROMETTEUSE ET LES RESULTATS OBTENUS (CHARGE ELIMINEE 0,32 KG NO 3 -/M 3.J) PERMETTENT D'ENVISAGER UN DEVELOPPEMENT A PLUS GRANDE ECHELLE. CE PROCEDE EST EN COURS D'AGREMENT ET UN PROTOTYPE INDUSTRIEL A ETE INSTALLE SUR UNE EAU DE SOURCE. CE PROCEDE POURRAIT ETRE APPLIQUE EGALEMENT POUR LA DECONTAMINATION D'EAUX SOUTERRAINES POLLUEES PAR DES SOLVANTS CHLORES.

Mécanismes d'acquisition de la qualité chimique d'une eau souterraine

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (932 download)

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Download or read book Mécanismes d'acquisition de la qualité chimique d'une eau souterraine written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Principal scientific and technical results

Author :
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (31 download)

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Download or read book Principal scientific and technical results written by and published by . This book was released on 1984 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Coal Tar Creosote

Author : C. Melber
Publisher : WHO
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Coal Tar Creosote by : C. Melber

Download or read book Coal Tar Creosote written by C. Melber and published by WHO. This book was released on 2004 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: IPCS International Programme on Chemical Safety. Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organization and the World Health Organization, and produced within the framework of the Inter-organization Programme for the Sound Management of Chemicals (IOMC)

Lamto

Author : Luc Abbadie
Publisher : Springer Science & Business Media
ISBN 13 : 0387338578
Total Pages : 422 pages
Book Rating : 4.3/5 (873 download)

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Book Synopsis Lamto by : Luc Abbadie

Download or read book Lamto written by Luc Abbadie and published by Springer Science & Business Media. This book was released on 2006-11-22 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthesizing 40 years of ongoing ecological research, this book examines the structure, function, and dynamics of the Lamto humid savanna. From the history of the Lamto ecology station, to an overview of enivronmental conditions of the site, and examining the integrative view of energy and nutrient fluxes relative to the dynamics of the region's vegetation, this exacting work is as unique and treasured as Lamto itself.

Fermentation Processes Engineering in the Food Industry

Author : Carlos Ricardo Soccol
Publisher : CRC Press
ISBN 13 : 1439887683
Total Pages : 510 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Fermentation Processes Engineering in the Food Industry by : Carlos Ricardo Soccol

Download or read book Fermentation Processes Engineering in the Food Industry written by Carlos Ricardo Soccol and published by CRC Press. This book was released on 2013-03-27 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of modern tools of molecular biology and genetic engineering and new skills in metabolic engineering and synthetic biology, fermentation technology for industrial applications has developed enormously in recent years. Reflecting these advances, Fermentation Processes Engineering in the Food Industry explores the state of the art of

Sustainability

Author : Rao Y. Surampalli
Publisher : John Wiley & Sons
ISBN 13 : 1119433894
Total Pages : 696 pages
Book Rating : 4.1/5 (194 download)

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Book Synopsis Sustainability by : Rao Y. Surampalli

Download or read book Sustainability written by Rao Y. Surampalli and published by John Wiley & Sons. This book was released on 2020-03-19 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource to sustainability and its application to the environmental, industrial, agricultural and food security sectors Sustainability fills a gap in the literature in order to provide an important guide to the fundamental knowledge and practical applications of sustainability in a wide variety of areas. The authors – noted experts who represent a number of sustainability fields – bring together in one comprehensive volume the broad range of topics including basic concepts, impact assessment, environmental and the socio-economic aspects of sustainability. In addition, the book covers applications of sustainability in environmental, industrial, agricultural and food security, as well as carbon cycle and infrastructural aspects. Sustainability addresses the challenges the global community is facing due to population growth, depletion of non-renewable resources of energy, environmental degradation, poverty, excessive generation of wastes and more. Throughout the book the authors discuss the economics, ecological, social, technological and systems perspectives of sustainability. This important resource: • Explores the fundamentals as well as the key concepts of sustainability; • Covers basic concepts, impact assessment, environmental and socio-economic aspects, applications of sustainability in environmental, industrial, agricultural and food security, carbon cycle and infrastructural aspects; • Argues the essentiality of sustainability in ensuring the propitious future of earth systems; and • Authored by experts from a range of various fields related to sustainability. Written for researchers and scientists, students and academics, Sustainability: Fundamentals and Applications is a comprehensive book that covers the basic knowledge of the topic combined with practical applications.

New Horizons in Biotechnology

Author : S. Roussos
Publisher : Springer Science & Business Media
ISBN 13 : 9401702039
Total Pages : 449 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis New Horizons in Biotechnology by : S. Roussos

Download or read book New Horizons in Biotechnology written by S. Roussos and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of biotechnology, though different in style, scale and substance in globalizing science for development involves all countries. Investment in biotechnology in the industrialised, the developing, and the least developed countries, is now amongst the widely accepted avenues being used for economie development. The simple utilization of kefir technology, the detoxification of injurious chemical pesticides e.g. parathion, the genetic tailoring of new crops, and the production of a first of a kind of biopharmaceuticals illustrate the global scope and content of biotechnology research endeavour and effort. In the developing and least developed nations, and in which the 9 most populous countries· are encountered, problems concerning management of the environment, food security, conservation of human health resources and capacity building are important factors that influence the path to sustainable development. Long-term use of biotechnology in the agricultural, food, energy and health sectors is expected to yield a windfall of economic, environmental and social benefits. Already the prototypes of new medicines and of prescription fruit vaccines are available. Gene based agriculture and medieine is increasingly being adopted and accepted. Emerging trends and practices are reflected in the designing of more efficient bioprocesses, and in new research in enzyme and fermentation technology, in the bioconversion of agro industrial residues into bio-utility products, in animal healthcare, and in the bioremediation and medical biotechnologies. Indeed, with each new day, new horizons in biotechnology beckon.

Nitrogen Cycling in Coastal Marine Environments

Author : T. Henry Blackburn
Publisher :
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Nitrogen Cycling in Coastal Marine Environments by : T. Henry Blackburn

Download or read book Nitrogen Cycling in Coastal Marine Environments written by T. Henry Blackburn and published by . This book was released on 1988-03-21 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen discharge to the coastal environment has been increasing, posing the threat of accelerated eutrofication. Considerable research has been conducted in recent years to examine the impact of the nitrogen loading in coastal ecosystems. Based on proceedings from a SCOPE symposium held at the University of Aarhus in July of 1985, this volume covers a variety of up-to-date developments in research on nitrogen cycling in coastal marine environments. Topics include the role of nitrogen in algal productivity, regeneration of nutrients in the water column and the sediments, and the flow of nitrogen in coastal ecosystems.

How to Design Wastewater Systems for Local Conditions in Developing Countries

Author : David M. Robbins
Publisher : IWA Publishing
ISBN 13 : 178040476X
Total Pages : 148 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis How to Design Wastewater Systems for Local Conditions in Developing Countries by : David M. Robbins

Download or read book How to Design Wastewater Systems for Local Conditions in Developing Countries written by David M. Robbins and published by IWA Publishing. This book was released on 2014-03-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a practical handbook providing a step-by-step approach to the techniques used for characterizing wastewater sources and investigating sites where collection, treatment and reuse/disposal technologies will be installed. It is intended to help enable local implementation of on-site and decentralized wastewater management system (DWMS)for wide scale use in development settings. How to Design Wastewater Systems for Local Conditions in Developing Countries helps local service providers and regulatory officials make informed decisions through the use of tools, checklists and case studies. It includes a link to a web based community of on-site and decentralized wastewater professionals, which contains related tools and case studies. This handbook serves as a reference for training classes, certification programs, and higher education programs in civil and sanitary engineering. There is an increasing interest on the part of local government officials and private sector service providers to implement wastewater treatment systems to solve sanitation problems. The model presented in this handbook promotes activities that first generate data related to source and site conditions that represent critical inputs, and then applies this information to the technology selection process. Matching the most appropriate technologies to the specific needs of the wastewater project is the key that leads to long term sustainability. How to Design Wastewater Systems for Local Conditions in Developing Countries is an invaluable resource for public sector decision makers and private sector service providers in developing countries. It is also a useful text for students at engineering colleges in developing countries interested in taking a class that teaches the methods of decentralized wastewater management system (DWMS) development.

Hydrology of Mediterranean and Semiarid Regions

Author : Eric Servat
Publisher :
ISBN 13 : 9781901502121
Total Pages : 518 pages
Book Rating : 4.5/5 (21 download)

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Book Synopsis Hydrology of Mediterranean and Semiarid Regions by : Eric Servat

Download or read book Hydrology of Mediterranean and Semiarid Regions written by Eric Servat and published by . This book was released on 2003 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana

Author : Samuel Adjei-Nsiah
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana by : Samuel Adjei-Nsiah

Download or read book Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana written by Samuel Adjei-Nsiah and published by . This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: However, there is still considerable scope for further development of these self-organised innovations.