Download or read book La valorisation des boues d puration s ch es dans la brique de terre cuite Faisabilit technique et environnementale written by Franck Seukep and published by . This book was released on 2020-02-05 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Etude Scientifique de l'année 2015 dans le domaine Sciences Agronomiques, note: 18/20, langue: Français, résumé Les déversements sans traitements préalables des boues d'épuration dans le milieu naturel à Yaoundé sont une source de pollution considérable, ayant des impacts négatifs sur la santé humaine et l'environnement. Ceci est dû au fait qu'aucun plan de gestion de ces déchets n'est prévu dans les politiques d'assainissement liquide au Cameroun. C'est fort de cette situation que la présente étude, voudrait contribuer à la recherche d'une voie d'élimination de ces déchets en les valorisant dans la fabrication des briques cuites. Pour y parvenir, les activités menées ont consisté à (i) l'évaluation de la production de boues dans la ville de Yaoundé, basée sur la méthode du bilan massique par procédé; (ii) la caractérisation des matières premières (argile et boues); (iii) la détermination des propriétés physico-mécaniques des briques fabriquées, conformément aux procédures de la norme française NF P13-304, et (iv) l'évaluation environnementale de la formulation retenue, par des essais de lixiviation. La ville de Yaoundé comptera d'ici 2020, sept stations d'épuration d'eaux usées domestiques pour une production de boues, qui atteindra les 6 400 tonnes de matières sèches. L'analyse chimique des poudres de boues a montré des teneurs totales plus ou moins fortes en éléments potentiellement dangereux tels que le Zn (680 mg.kg-1), Cu (272 mg.kg-1), Cr (68 mg.kg-1) et Ni (31 mg.kg-1), ayant également présenté des fractions mobilisables au-dessus des seuils réglementaires français, d'où leur caractère dangereux. Les résultats des essais réalisés sur les éprouvettes fabriquées avec les taux de 10, 15, 20, 25, 30, 35 et 40 % en masse de boue dans l'argile ont montré que ce taux a une influence remarquable sur les propriétés physico-mécaniques des briques.
Download or read book Faisabilit technique et environnementale de l utilisation dans des mat riaux de construction cimentaires de cendres d incin ration de boues de station d puration written by Maozhe Chen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Des quantités importantes de cendres (4,12 million kg en France en 2008) sont issues de l'incinération des boues de station d'épuration. La valorisation de ces cendres comme matière première secondaire pour l'élaboration de matériau dans le domaine du bâtiment et des travaux publics (BTP) a été étudiée dans cette thèse. La caractérisation physique et chimique des cendres et l'étude de leur réactivité ont révélé un comportement intermédiaire entre le ciment et le sable, proche du comportement de matériaux pouzzolaniques. Les tests de lixiviation réalisés sur les cendres ont montré qu'à l'exception du Se et du Mo, les éléments présents dans les cendres sont solubilisés à des concentrations inférieures aux seuils définis règlementairement pour les déchets inertes ou non-dangereux. Les liens entre la solubilisation des éléments et la minéralogie des matériaux ont été étudiés à travers la modélisation géochimique réalisée sous PhreeqC. L'influence du taux de substitution du ciment par les cendres sur les propriétés mécaniques des matériaux a également été étudiée. L'indice d'activité à 28 jours de la cendre est conforme à la spécification de la norme EN 450-1. La résistance du mortier diminue quand le taux de substitution augmente à cause de la faible teneur en CaO dans les cendres et de l'apport supplémentaire d'eau nécessaire. Pour le béton avec un taux de substitution de 10 %, la résistance est comparable à celle du béton témoin. L'essai de durabilité des matériaux cimentaires incorporant les cendres révèle une forte diminution de résistance mécanique sous l'effet de la sollicitation au gel/dégel. Une évaluation environnementale de ces matériaux a été réalisée par l'essai de lixiviation à l'échelle du laboratoire et à l'échelle pilote. Les quantités relarguées cumulées des éléments polluants et des anions sont inférieures aux seuils sans impact environnemental, acceptables en construction aux Pays-Bas et en France.
Download or read book Analyse avantages co ts de la valorisation des boues d usine d puration des eaux us es sur les terres agricoles microforme cas de Lac M gantic written by Francis Vandal and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1995 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 La valorisation agricole des boues d usines d puration d eaux us es municipales microforme impact sur la cha ne alimentaire humaine written by A. (Alexandre) Lefebvre and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1996 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
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:
Download or read book Goa and Portugal written by Charles J. Borges and published by Concept Publishing Company. This book was released on 1997 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of twenty-one papers presented at an international symposium on the theme "cultural relations between Portugal and Goa" at the University of Cologne, 29 May-2 June 1996; chiefly covers the 16th-18th centuries.
Download or read book A Guide To Soil Mechanics written by Malcolm D Bolton and published by Universities Press. This book was released on 2013 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers all the soil mechanics and foundation engineering topics that are commonly included in civil engineering degree courses, and provides a number of springboards into related advanced topics. Although it is intended principally to satisfy the needs of student civil engineers, this guide should also prove useful to those practicing engineers who are unaware of the powerful and elegant reconstruction of the subject which has been made possible by the recent concepts of plasticity, dilatancy and critical states.
Download or read book Agricultural English written by Georgeta Raţă and published by Cambridge Scholars Publishing. This book was released on 2012-04-25 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agricultural English is a collection of essays on the English of Agriculture. The approach is a linguistic one: the different aspects of the English used in the field of agriculture (agricultural practices, agricultural systems) and in some fields related to agriculture (agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, zoology) are analysed from a morphological (combination, derivation), syntactical (nominal phrases, verbal phrases), lexical and lexicographical, semantic (homonymy, semantic fields, synonymy, terminology), pragmatic (academic discourse, idiom, metaphor), etymological (etymon, Latin heritage), and contrastive (English–Croatian, English–French, English–German, English–Romanian, Romanian–English) points of view. The book will appeal to agriculturists, animal breeders, professors, researchers, students, and translators from Croatian-, English-, French-, German-, and Romanian-speaking countries, active in their own countries or abroad. The types of academic readership it would appeal to include academic teaching staff, researchers and students in the fields of agriculture and related fields – agricultural zoology, agri-tourism, biology, botany, ecology, entomology, gastronomy, land measurement, plant pathology, and zoology.
Download or read book Enhanced Abutment Scour Studies for Compound Channels written by Terry W. Sturm and published by DIANE Publishing. This book was released on 2004 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental results and analyses are given in this report on bridge abutment scour in compound channels. Experiments were conducted in a laboratory flume with a cross section consisting of a wide floodplain adjacent to a main channel. The embankment length, discharge, sediment size, and abutment shape were varied, and the resulting equilibrium scour depths were measured. Water-surface profiles, velocities, and scour-hole contours were also measured. In the report, a methodology is developed for estimating abutment scour that takes into account the redistribution of discharge in the bridge contraction, abutment shape, sediment size, and tailwater depth. The independant variables in the proposed scour formula are evaluated at the approach-channel cross section and can be obtained froma one-dimensional water-surface profile computer program such as the Water-Surface Profile Program (WSPRO). The proposed scour evaluation procedure is outlined and illustrated, including consideration of the time required to reach equilibrium scour. The proposed methodology is applied to two cases of measured scour in the field.
Download or read book The Ladybird Illustrated written by D H Lawrence and published by . This book was released on 2020-11-09 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Ladybird is a long tale or novella by D. H. Lawrence. It was first drafted in 1915 as a short story entitled The Thimble. Lawrence rewrote and extended it under a new title in December 1921 and sent the final version to his English agent on 9 January 1922. It was collected with two other tales, The Captain's Doll and The Fox, and the three novellas were then published in London by Martin Secker in March 1923 under the title The Ladybird and in New York by Thomas Seltzer as The Captain's Doll in April 1923."
Download or read book Caterpillar Club Survivor written by Ross Smith Stagg and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spitfire pilot Ross Smith Stagg was one of 33 Allied airmen to defend Darwin against Japanese invasion on May 2, 1943. As one of 14 pilots shot down or experience mechanical failure in the ensuing battle, he parachuted into the sea 18 km from land, 100 km southwest of Darwin in the Fogg Bay area. He reached the shore in a dinghy. For the next 15 days he trudged through inhospitable country in a futile attempt to return to Strauss airbase. What should have been a few days walk turned into his worst possible nightmare as he stumbled aimlessly through mosquito and crocodile infested swamps. "It was almost six days I'd been without sleep, apart from a short period of unconsciousness and those few moments before I fell out of that tree," he said. " I became demented by the cavalcade of mosquitoes and hallucinating badly". His experience was only to worsen - he waded halfway across a tidal river to be confronted by a large saltie. Darwin historian John Haslett help Stagg map the original route by retracing his steps, even managing to relocate an American Kittyhawk Stagg found crashed in the middle of nowhere.
Download or read book Cambridge Yearbook of European Legal Studies Vol 13 2010 2011 written by Catherine Barnard and published by Bloomsbury Publishing. This book was released on 2011-12-15 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cambridge Yearbook of European Legal Studies provides a forum for the scrutiny of significant issues in EU Law, the law of the European Convention on Human Rights, and Comparative Law with a 'European' dimension, and particularly those issues which have come to the fore during the year preceding publication. The contributions appearing in the collection are commissioned by the Centre for European Legal Studies (CELS) Cambridge, a research centre in the Law Faculty of the University of Cambridge specialising in European legal issues. The papers presented are at the cutting edge of the fields which they address, and reflect the views of recognised experts drawn from the University world, legal practice, and the institutions of both the EU and its Member States. Inclusion of the comparative dimension brings a fresh perspective to the study of European law, and highlights the effects of globalisation of the law more generally, and the resulting cross fertilisation of norms and ideas that has occurred among previously sovereign and separate legal orders. The Cambridge Yearbook of European Legal Studies is an invaluable resource for those wishing to keep pace with legal developments in the fast moving world of European integration. INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 13 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/cyels/subs Editorial Advisory Board: Albertina Albors-Llorens, John Bell, Alan Dashwood, Simon Deakin, David Feldman, Richard Fentiman, Angus Johnston, John Spencer Founding Editors: Alan Dashwood and Angela Ward Ius Commune Prize 2012 Alexandre Saydé wrote Chapter 15 in this volume entitled: 'One Law, Two Competitions: An Enquiry into the Contradictions of Free Movement Law' and we are delighted to announce that he has been awarded the Ius Commune Prize 2012.
Download or read book Magnificent Monuments of Old Goa written by Patrick J. Lobo and published by . This book was released on 2004 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notes on the Minor Prophets written by Henry Allan Ironside and published by . This book was released on 1955 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
