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Influence De Laccumulation Et De Levolution Des Sediments Sur Le Fonctionnement Dun Lagunage Naturel
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Book Synopsis Influence de l'accumulation et de l'évolution des sédiments sur le fonctionnement d'un lagunage naturel by : Bruno Triboulet
Download or read book Influence de l'accumulation et de l'évolution des sédiments sur le fonctionnement d'un lagunage naturel written by Bruno Triboulet and published by . This book was released on 1991 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ANALYSE SPATIO-TEMPORELLE DES SEDIMENTS D'UN LAGUNAGE D'EPURATION DES EAUX USEES, EXPLOITE DEPUIS DIX ANS, A PERMIS DE DEFINIR LE ROLE PREPONDERANT JOUE PAR L'ACCUMULATION ET L'EVOLUTION DE CE DEPOT SUR LA QUALITE DES EAUX EN COURS DE TRAITEMENT. LE MAINTIEN DE CONDITIONS ANAEROBIES ET FORTEMENT REDUCTRICES DANS LE SEDIMENT, ET A L'INTERFACE AVEC LA COLONNE D'EAU, FAVORISE LES MECANISMES BACTERIENS DE DEGRADATION DE LA MATIERE ORGANIQUE. CES VOIES METABOLIQUES SONT A L'ORIGINE DES PHENOMENES DE STRATIFICATION, DE ZONATION, ET DES CRISES DYSTROPHIQUES, REVELES PAR L'OBSERVATION DES PARAMETRES PH ET OXYGENE DISSOUS QUI S'AVERENT AINSI ETRE D'EXCELLENTS INDICATEURS DE L'ETAT DE L'ECOSYSTEME, ET DE SON EVOLUTION. LA BIOGEOCHIMIE DU SOUFRE EST, QUANT A ELLE, PLUS PARTICULIEREMENT ORIENTEE VERS LES METABOLISMES DE PUTREFACTION ET DE SULFATOREDUCTION, DONT LES PRODUITS SONT, SELON LES CONDITIONS PHYSICO-CHIMIQUES RENCONTREES, SOIT ECHANGES ENTRE LES PHASES SOLIDE ET LIQUIDE DE L'ECOSYSTEME, SOIT STOCKES DANS LE SEDIMENT. CETTE ACCUMULATION S'EFFECTUE PAR FORMATION DE SULFURES QUI, EN CONSTITUANT LES PRINCIPAUX LIGANDS DES CATIONS METALLIQUES PRESENTS, CONDITIONNENT LEUR REPARTITION DANS L'ECOSYSTEME, ET GOUVERNENT LEUR ELIMINATION
Book Synopsis Processus de sédimentation fine en domaine estuarien macrotidal by : Claire Marion
Download or read book Processus de sédimentation fine en domaine estuarien macrotidal written by Claire Marion and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Les mécanismes contrôlant la dynamique des sédiments fins en milieu estuarien sont complexes du fait de la multiplicité des processus en action et de leurs interactions diverses et encore souvent mal comprises. L’étude de la dynamique des sédiments fins regroupe quelques uns des enjeux environnementaux fondamentaux. En raison de leur forte affinité avec une large gamme de contaminants métalliques et organiques, les particules fines sont en mesure de concentrer la pollution provenant à la fois du bassin versant et du milieu marin et dont les risques respectifs sont croissants (agriculture, trafic maritime...). Leur accrétion mène à la formation de vasières puis à l’édification de marais maritimes, habitats d’importance communautaire au niveau européen. La pérennité de ces espaces ainsi que la biodiversité et la maintenance des ressources qu’ils contiennent sont cependant menacées par le comblement général des estuaires. Les travaux effectués lors de cette thèse ont permis de dégager quelques points clefs du fonctionnement d’un estuaire co-dominé par la houle et la marée en soulignant notamment les interactions entre les différents processus. Ils ont également permis d’appliquer un ensemble d’outils et de croiser les regards scientifiques par le biais d’une méthodologie transdisciplinaire. Les études à l’échelle de la marée ont mis en évidence l’influence significative mais restreinte de la houle au domaine d’embouchure, la mixité des masses d’eau et la présence d’un maximum de turbidité résultant d’un jeu d’asymétrie de la marée. Cette pompe tidale est en mesure de redistribuer les sédiments très largement au sein de l’estuaire, notamment par le biais de macroflocs. Les interactions entre la morphologie et les asymétries de marées sont complexes et, à travers le transport résiduel engendré, conditionnent l’évolution du système estuarien. La dynamique tidale est particulièrement bien enregistrée à travers la nature des dépôts et leurs rythmicité. Les suivis ont montré une constante disponibilité des MES dans les masses d’eau et le rôle clef de vecteur des chenaux de marée. Les apports de sédiments sur les zones intertidales se font ensuite selon les niveaux altimétriques. Les différents résultats ont mis en évidence l’importance de la spartine dans les mécanismes de piégeage des sédiments sur les marais salés et leur variabilité saisonnière mais également les répercussions que pouvaient avoir les forts taux de sédimentation sur les biocénoses benthiques à moyen terme. Sur une échelle plus longue, nous avons pu envisager les conséquences en termes d’élévation de cette accumulation en soulignant l’effet de la compaction du profil sédimentaire. Le volet stratigraphique, prenant en compte les conclusions de l’histoire holocène de la plaine maritime flamande, confirme le stade de comblement avancé de l’estuaire. Les recherches sur l’estuaire de l’Authie sont susceptibles de déboucher sur un modèle d’estuaire à dominance hydrodynamique mixte marée-houle, pertinent pour des estuaires macrotidaux tempérés situés dans des domaines à forte disponibilité en sables et répondant à ces critères hydrodynamiques (estuaire de la Manche). Les perturbations d’ordre climatique et la variabilité naturelle qui s’amorcent dans le cadre du changement global s’accompagnent d’une pression humaine de plus en plus forte sur les espaces estuariens. Ces risques devront nous obliger à appréhender les écosystèmes estuariens de manière holistique en les replaçant au niveau régional de la Manche mais également dans le contexte mondial.
Book Synopsis Relation eau - sédiment en épuration par lagunage naturel by : Smai͏̈n Belbahri
Download or read book Relation eau - sédiment en épuration par lagunage naturel written by Smai͏̈n Belbahri and published by . This book was released on 1991 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: UN SYSTEME D'EPURATION DES EAUX RESIDUAIRES PAR LAGUNAGE NATUREL A MICROPHYTES SEPARANT LES COMPARTIMENTS A ALGUES ET A SEDIMENTS A ETE REPRODUIT EN LABORATOIRE. LE CONTROLE DE LA TEMPERATURE ET DES FLUX ENTRE COMPARTIMENTS A PERMIS DE PRECISER: LES CONDITIONS DE DEVELOPPEMENT D'ECOSYSTEMES TYPIQUES DES CONDITIONS REELLES, L'INFLUENCE DES DIVERS PARAMETRES SUR LES RENDEMENTS. SUR LA BASE DE CES OBSERVATIONS ET RESULTATS, UN EXEMPLE DE MODELE INCORPORANT LE ROLE DES SEDIMENTS EST PROPOSE
Book Synopsis IMPACT DU REJET D'UNE STATION D'EPURATION PAR LAGUNAGE NATUREL SUR LA STRUCTURE ET LE FONCTIONNEMENT DES COMMUNAUTES PLANCTONIQUES ET PERIPHYTIQUES DU MILIEU AQUATIQUE RECEPTEUR by : ESTELLE.. MASSERET
Download or read book IMPACT DU REJET D'UNE STATION D'EPURATION PAR LAGUNAGE NATUREL SUR LA STRUCTURE ET LE FONCTIONNEMENT DES COMMUNAUTES PLANCTONIQUES ET PERIPHYTIQUES DU MILIEU AQUATIQUE RECEPTEUR written by ESTELLE.. MASSERET and published by . This book was released on 1997 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE LAGUNAGE NATUREL, PROCEDE DE TRAITEMENT DES EAUX RESIDUAIRES REPRODUISANT LE CYCLE DE LA MATIERE ORGANIQUE D'UN MILIEU AQUATIQUE NATUREL SANS AUTRE APPORT ENERGETIQUE QUE LE RAYONNEMENT SOLAIRE, PEUT ETRE CONSIDERE COMME UN SYSTEME D'INTENSE PRODUCTION DE MICROORGANISMES AQUATIQUES. EXPORTES DANS LE MILIEU NATUREL, ILS PEUVENT CONSTITUER UNE CHARGE ORGANIQUE SUPPLEMENTAIRE, SUSCEPTIBLE DE DIMINUER LES PERFORMANCES AUTO-EPURATRICES DES SYSTEMES AQUATIQUES RECEPTEURS. L'OBJECTIF DE CE TRAVAIL ETAIT D'EVALUER LE POTENTIEL EUTROPHISANT DE L'EFFLUENT TRAITE D'UNE LAGUNE D'EPURATION NATURELLE AU NIVEAU DU MILIEU AQUATIQUE RECEPTEUR. L'APPROCHE EST BASEE SUR L'ETUDE DES CARACTERISTIQUES PHYSIQUES ET CHIMIQUES DES DIFFERENTS COMPARTIMENTS, AINSI QUE DE LA STRUCTURE ET DU FONCTIONNEMENT DES COMMUNAUTES BACTERIENNES ET PHYTOPLANCTONIQUES, DANS LE DERNIER BASSIN DE LAGUNAGE, DANS L'EFFLUENT TRAITE, ET DANS LE MILIEU RECEPTEUR OU A EGALEMENT ETE ETUDIEE LA COMMUNAUTE PERIPHYTIQUE. L'ETUDE A ETE MENEE SUR LA STATION DE MONTEL-DE-GELAT (PUY-DE-DOME - FRANCE) ET LE COURS D'EAU RECEPTEUR LE RABY, AU COURS D'UN CYCLE ANNUEL ET D'UN SUIVI LONGITUDINAL. ELLE A PERMIS DE DEGAGER LES PRINCIPAUX ENSEIGNEMENTS SUIVANTS : 1) LES VARIATIONS SAISONNIERES DE LA COMPOSITION DU REJET DE LA LAGUNE D'EPURATION SONT PARTICULIEREMENT IMPORTANTES, ET SOUS LA DEPENDANCE DES PROCESSUS BIOGEOCHIMIQUES SE DEROULANT DANS LE BASSIN DE LAGUNAGE, 2) LE REJET DE L'EFFLUENT TRAITE SE TRADUIT AU PRINTEMPS ET EN ETE PAR UN ENRICHISSEMENT SIGNIFICATIF EN ELEMENTS NUTRITIFS (AZOTE ET PHOSPHORE) ET PAR DES MODIFICATIONS DE LA STRUCTURE ET DU FONCTIONNEMENT DES COMMUNAUTES PLANCTONIQUES ET PERIPHYTIQUES DU COURS D'EAU RECEPTEUR. CET IMPACT EST PARTICULIEREMENT VISIBLE AU NIVEAU DU PHYTOPLANCTON ET DES DIATOMEES PERIPHYTIQUES, 3) GLOBALEMENT, L'APPORT DE CET EFFLUENT FAVORISE LE DEVELOPPEMENT DES MICROORGANISMES DONT LE METABOLISME EST ESSENTIELLEMENT CHEMOHETEROTROPHE AU DETRIMENT DES ORGANISMES CHLOROPHYLLIENS.
Book Synopsis Impact de l'environnement naturel et urbain sur l'évolution des caractères physico-chimiques d'un système hydrographique au cours d'un cycle hydrogéologique particulier by : Bruno Bailly
Download or read book Impact de l'environnement naturel et urbain sur l'évolution des caractères physico-chimiques d'un système hydrographique au cours d'un cycle hydrogéologique particulier written by Bruno Bailly and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Efficient Management of Wastewater by : Ismail Al Baz
Download or read book Efficient Management of Wastewater written by Ismail Al Baz and published by Springer Science & Business Media. This book was released on 2008-01-12 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water reuse management is one of the challenges all water scarce countries have to deal with in the coming decades. The present book highlights non-conventional solutions within the field of wastewater treatment and reuse predominantly for professionals and decision makers. It focuses on technologies which are reliable, sustainable, low cost and suitable for rural and sub urban areas. In addition, particularly innovative on-site concepts are presented.
Book Synopsis Advanced Intelligent Systems for Sustainable Development (AI2SD’2020) by : Janusz Kacprzyk
Download or read book Advanced Intelligent Systems for Sustainable Development (AI2SD’2020) written by Janusz Kacprzyk and published by Springer Nature. This book was released on 2022-02-10 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book publishes the best papers accepted and presented at the 3rd edition of the International Conference on Advanced Intelligent Systems for Sustainable Development Applied to Agriculture, Energy, Health, Environment, Industry, Education, Economy, and Security (AI2SD’2020). This conference is one of the biggest amalgamations of eminent researchers, students, and delegates from both academia and industry where the collaborators have an interactive access to emerging technology and approaches globally. In this book, readers find the latest ideas addressing technological issues relevant to all areas of the social and human sciences for sustainable development. Due to the nature of the conference with its focus on innovative ideas and developments, the book provides the ideal scientific and brings together very high-quality chapters written by eminent researchers from different disciplines, to discover the most recent developments in scientific research.
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 Advanced Intelligent Systems for Sustainable Development (AI2SD’2018) by : Mostafa Ezziyyani
Download or read book Advanced Intelligent Systems for Sustainable Development (AI2SD’2018) written by Mostafa Ezziyyani and published by Springer. This book was released on 2019-02-13 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers papers presented at the International Conference on Advanced Intelligent Systems for Sustainable Development (AI2SD-2018), which was held in Tangiers, Morocco on 12–14 July 2018. It highlights how advanced intelligent systems have successfully been used to develop tools and techniques for modeling, prediction and decision support in connection with the environment. Though chiefly intended for researchers and practitioners in advanced intelligent systems for sustainable development, the book will also be of interest to those working in environment and the Internet of Things, environment and big data analysis, summarization, prediction, remote sensing & geo-information, geophysics, marine and coastal environments, and sensor networks for environment services.
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 Water Resources Management IV by : C.A. Brebbia
Download or read book Water Resources Management IV written by C.A. Brebbia and published by WIT Press. This book was released on 2007-05-08 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water resources are under extreme pressure today all over the world. The resulting problems have given rise to many activities which reflect the growing concern about them and the importance of effective management.As water increasingly becomes a precious resource on which the well-being of future generations depends, it is essential to discuss issues concerning quality, quantity, planning and other related topics.Containing papers presented at the Fourth International Conference on Water Resources Management, this book examines the recent technological and scientific developments associated with the management of surface and sub-surface water resources. The wide variety of subjects covered are as follows: Water Resource Management and Planning; Waste Water Treatment and Management; Water Markets and Policies; Urban Water Management; Water Quality; Storm Water Management; Water Security Systems; Pollution Control; Irrigation Problems; Reservoirs and Lakes; River Basin Management; Hydrological Modelling; Flood Risk; Decision Support Systems; Groundwater Flow Problems and Remediation Technologies; Coastal and Estuarial Problems; Soil and Water Conservation and Risk Analysis.
Book Synopsis Design Manual for Waste Stabilization Ponds in Mediterranean Countries by : Duncan Mara
Download or read book Design Manual for Waste Stabilization Ponds in Mediterranean Countries written by Duncan Mara and published by . This book was released on 1998-01-01 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flora Europaea written by T. G. Tutin and published by Cambridge University Press. This book was released on 1964 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the synthesis of the national and regional Floras of Europe and the fifth and final volume covers the Monocotyledons.
Book Synopsis Environmental Aspects of Dredging by : R. N. Bray
Download or read book Environmental Aspects of Dredging written by R. N. Bray and published by CRC Press. This book was released on 2008-03-10 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expanding a port, deepening a navigation channel or creating new land for development, introduces changes to our physical, social, economic and political environment. Changes may result from events during the construction process, or relate to the nature of the completed structure. Changes can be positive or negative, short-term or long-term, and may affect the immediate vicinity of the project or a larger geographical area. Predicting and assessing all possible effects of a planned dredging activity in a scientifically-sound and reliable manner is essential, so that appropriate control measures can be taken to avoid or mitigate unwelcome impacts. This book provides guidance for a complete holistic environmental evaluation procedure and for the design and implementation of environmental control measures. The book is of particular interest to engineers, government agencies and port authorities, as well as civil engineering consultants and contractors involved in planning and designing dredging, maritime infrastructure and fluvial projects.
Book Synopsis Med-checklist: Dicotyledones (Lauraceae-Rhamnaceae) by : W. Greuter
Download or read book Med-checklist: Dicotyledones (Lauraceae-Rhamnaceae) written by W. Greuter and published by . This book was released on 1984 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tropical Agriculturist and Magazine of the Ceylon Agricultural Society by :
Download or read book Tropical Agriculturist and Magazine of the Ceylon Agricultural Society written by and published by . This book was released on 1988 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
