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Denitrification Biologique Heterotrophe Appliquee Au Traitement Des Eaux Dalimentation
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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
Book Synopsis Etude de la dénitrification biologique hétérotrophe sur substrat cellulosique naturel by : Jean Morvan
Download or read book Etude de la dénitrification biologique hétérotrophe sur substrat cellulosique naturel written by Jean Morvan and published by . This book was released on 2001 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traitements Biologiques des eaux Residuaires by :
Download or read book Traitements Biologiques des eaux Residuaires written by and published by Ed. Techniques Ingénieur. This book was released on with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Traitement des eaux usées dans les filtres plantés à écoulement vertical by : Kévin Maciejewski
Download or read book Traitement des eaux usées dans les filtres plantés à écoulement vertical written by Kévin Maciejewski and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les filtres plantés de roseaux à écoulement vertical ont connu un essor considérable en France lors des 20 dernières années. Les enjeux aujourd'hui sont de mieux maitriser les performances de ces systèmes et d'optimiser le traitement de l'azote et du phosphore. Les travaux présentés ici portent sur un procédé appelé AZOE® dont les deux principales modifications par rapport au système de base sont l'immersion partielle des filtres plantés de roseaux et l'ajout d'un lit bactérien en tête de filière. Les objectifs de ces travaux sont d'approfondir la compréhension des mécanismes de traitement de l'azote sur cette filière, en particulier le lien entre carbone et azote, ainsi que de tester de possibles optimisations. Une attention particulière a été porté aux le développement de méthodologie analytique adaptée aux particularités de ces systèmes. Les résultats obtenus ont permis de mettre en évidence que dans ces procédés, la charge carbonée est dégradée jusqu'à 50% sur le lit bactérien, tandis que la nitrification peut atteindre 25% dans certains cas. Le premier étage de filtre planté contribue à la nitrification à hauteur de 75% et à la dénitrification à hauteur de 60%. L'ensemble des travaux ont permis de confirmer que le manque de carbone organique sur le second étage était le principal facteur limitant de la dénitrification et de mieux quantifier l'évolution du ratio carbone : azote tout au long de la filière de traitement. Un des apports de cette thèse a consisté à adapter et/ou développer des approches analytiques spécifiques pour améliorer la compréhension des procédés. Tout d'abord une approche isotopique a été développée en complément d'un traçage hydraulique pour appréhender la dynamique du comportement de l'azote au cours d'une période d'alimentation du système. Un traçage à l'ammonium marqué a permis de mettre en évidence la réactivité de l'azote avec les médias filtrant et de suivre dans le temps le déplacement et les transformations d'une bâchée. Les pilotes expérimentaux ont été équipés d'une installation spécifique permettant le prélèvement de matériaux filtrants sur lesquels les activités enzymatiques de nitrification et de dénitrification de chaque étage ont été mesurés avec une précision d'environ 5 cm au sein des horizons des milieux poreux. Dans une dernière phase destinée à optimiser ces systèmes au regard des limites identifiées, deux stratégies d'apport de carbone organique ont été évaluées pour lever les carences en carbone limitant la dénitrification sur le second étage. La dérivation d'une proportion d'effluent brut vers le second étage a été testée à l'échelle pilote, couplée à la mesure des potentiels microbiens de nitrification et de dénitrification permettant une cartographie fine des horizons impliquées dans le traitement de l'azote en comparaison d'un fonctionnement sans dérivation. Enfin, des essais de laboratoire ont porté sur le choix et l'étude de 7 matériaux biosourcés comme apport de carbone.
Book Synopsis Faecal Sludge Management by : Linda Strande
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book Aqua written by and published by . This book was released on 1982 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glossary of Soil Science Terms 2008 by : Soil Science Society of America
Download or read book Glossary of Soil Science Terms 2008 written by Soil Science Society of America and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 1800 terms are included in this revised glossary. Subject matter includes soil physics, soil chemistry, soil biology and biochemistry, pedology, soil and water management and conservation, forest and range soils, nutrient management and soil and plant analysis, mineralogy, wetland soils, and soils and environmental quality. Two appendices on tabular information and designations for soil horizons and layers also are included.
Book Synopsis Microbial Ecotoxicology by : Stéphane Pesce
Download or read book Microbial Ecotoxicology written by Stéphane Pesce and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
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.
Book Synopsis Biofloc Technology by : Yoram Avnimelech
Download or read book Biofloc Technology written by Yoram Avnimelech and published by . This book was released on 2012-01-01 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compendium of Sanitation Systems and Technologies by : Elizabeth Tilley
Download or read book Compendium of Sanitation Systems and Technologies written by Elizabeth Tilley and published by . This book was released on 2014 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Role of Phosphorus in Eutrophication by : Alfred Frank Bartsch
Download or read book Role of Phosphorus in Eutrophication written by Alfred Frank Bartsch and published by . This book was released on 1972 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Water and Wastewater Treatment by : Rao Y. Surampalli
Download or read book Advances in Water and Wastewater Treatment written by Rao Y. Surampalli and published by ASCE Publications. This book was released on 2004-01-01 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation "Advances in Water and Wastewater Treatment provides state-of-the-art information on the application of innovative technologies for water and wastewater treatment with an emphasis on the scientific principles for pollutant or pathogen removal. Described in detail are the practice and principles of wastewater treatment on topics such as: global warming, sustainable development, nutrient removal, bioplastics production, biosolid digestion and composting, pathogen reduction, metal leaching, secondary clarifiers, surface and subsurface constructed wetland, and wastewater reclamation. Environmental engineers and scientists involved in the practice of environmental engineering will benefit from the basic principles to innovation technologies application."--BOOK JACKET. Title Summary field provided by Blackwell North America, Inc. All Rights Reserved.
Book Synopsis Sustainable Sludge Management by : R. D. Tyagi
Download or read book Sustainable Sludge Management written by R. D. Tyagi and published by Amer Society of Civil Engineers. This book was released on 2009 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stricter regulations in many countries are increasing interest in sludge management processes which promote sustainability. Engineers and scientists are looking for viable options for resource management through the creation of value added-products from wastewater sludge. The ASCE's Technical Committee on Hazardous, Toxic, and Radioactive Waste Management identified the need to collect and present the latest information on recent trends in the bioconversion of sludge to value-added products like biopesticides, biosurfactants, enzymes, bioplastics, and biofertilizers/bioflocculants. The committee envisioned an easy-to-read book to serve as a reference for practicing professionals and as a textbook in undergraduate or graduate courses. Sustainable Sludge Management: Production of Value-Added Products offers an examination of wastewater sludge characteristics; a road to sustainability by converting sludge into value-added products; and detailed information on the various types of value-added products being created from sludge. This book will be valuable to undergraduate and graduate students in environmental engineering, educators, researchers, practicing engineers and scientists.
Book Synopsis Population, Environment and Development by : UN. Population Division
Download or read book Population, Environment and Development written by UN. Population Division and published by United Nations Publications. This book was released on 2001 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The general trends of rapid population growth, sustained but uneven economic improvement, and environmental degradation, are well known. Population and development policies are vital components of action needed to ensure sustainable development and to safeguard the environment. The topics investigated in this report include: the evolution of population and the environment at major UN conferences; trends in population, environment and development; government views; health, mortality, fertility and the environment; urbanization.
Book Synopsis Agrimonde – Scenarios and Challenges for Feeding the World in 2050 by : Sandrine Paillard
Download or read book Agrimonde – Scenarios and Challenges for Feeding the World in 2050 written by Sandrine Paillard and published by Springer. This book was released on 2016-09-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: How will the world be able to feed close to 9 billion people in 2050 and still maintain the ecosystems? In this perspective, INRA and CIRAD launched the initiative, in 2006, to develop a foresight project for analysing issues pertaining to the world's food and agricultural systems on the 2050 timeline. This book provides a synthetic presentation of the main conclusions that this foresight project has yielded. First, it recapitulates the main statistical references for the period 1961 to 2003, before going on to describe the Agribiom simulation tool used to calculate food biomass resource use balances. Two scenarios on the 2050 timeline are then considered: Agrimonde GO is a trend-based scenario that bets on economic growth to feed the world, in a context where environmental protection is not a priority; in contrast, the idea in Agrimonde 1 is to feed the world while preserving its ecosystems.
Book Synopsis Radiocarbon After Four Decades by : Ervin Taylor
Download or read book Radiocarbon After Four Decades written by Ervin Taylor and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiocarbon After Four Decades: An Interdisciplinary Perspective commemorates the 40th anniversary of radiocarbon dating. The volume presents discussions of every aspect of this dating technique, as well as chronicles of its development and views of future advancements and applications. All of the 64 authors played major roles in establishment, development or application of this revolutionary scientific tool. The 35 chapters provide a solid foundation in the essential topics of radiocarbon dating: Historical Perspectives; The Natural Carbon Cycle; Instrumentation and Sample Preparation; Hydrology; Old World Archaeology; New World Archaeology; Earth Sciences; and Biomedical Applications.
