Contribution à l'étude des transferts simultanés d'eau et de solute en milieu poreux PDF Download
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Author: André Mermoud (Ingénieur rural, Géomètre, Suisse)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 255
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Author: André Mermoud (Ingénieur rural, Géomètre, Suisse)
Publisher:
ISBN:
Category :
Languages : fr
Pages : 255
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Author: André Mermoud
Publisher:
ISBN:
Category :
Languages : fr
Pages : 255
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Author: Mladen M. Boreli
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Author: Eric Mignard
Publisher:
ISBN:
Category :
Languages : fr
Pages : 213
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Le travail effectué dans ce mémoire se situe dans le cadre de l'étude des transferts dans les sols non saturés. On porte une attention particulière au phénomène de dissolution d'un constituant gazeux dans l'eau d'un sol. A prés avoir fait l'état de la question dans la partie I, on élabore dans la partie II un modèle mathématique des transferts dans un sol non saturé. Ce modèle, basé sur la Mécanique des milieux hétérogènes et la Thermodynamique des Processus Irréversibles Linéaire, permet d'établir la relation phénoménologique de dissolution d'un constituant gazeux dans l'eau d'un sol. La partie III est consacrée à la vérification expérimentale de la relation de dissolution établie dans la partie II et à la mesure du coefficient phénoménologique de dissolution dans le cas du bromure de méthyle. Les matériaux utilisés sont pour ces expériences une porcelaine poreuse et une argile frittée partiellement saturées. La partie IV est consacrée à l'étude numérique de la pénétration par diffusion gazeuse et de la fixation paar dissolution du bromure de méthyle dans une colonne de sol.
Author: Georges Vachaud
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author: Marie-Dominique de Cayeux
Publisher:
ISBN: 9782720835858
Category :
Languages : fr
Pages : 107
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Author: Linda Strande
Publisher: IWA Publishing
ISBN: 1780404735
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
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.
Author: R. O. Slatyer
Publisher:
ISBN:
Category : Crops
Languages : en
Pages : 586
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Author: David M. Robbins
Publisher: IWA Publishing
ISBN: 178040476X
Category : Science
Languages : en
Pages : 148
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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.
Author: Elizabeth Tilley
Publisher:
ISBN: 9783906484570
Category :
Languages : en
Pages : 176
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