Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Combinaison Innovante De Traitements Electriques Et Physico Chimiques Pour Ameliorer La Deshydratation Mecanique De Suspensions Et Boues Dorigines Industrielles Et Urbaines
Download Combinaison Innovante De Traitements Electriques Et Physico Chimiques Pour Ameliorer La Deshydratation Mecanique De Suspensions Et Boues Dorigines Industrielles Et Urbaines full books in PDF, epub, and Kindle. Read online Combinaison Innovante De Traitements Electriques Et Physico Chimiques Pour Ameliorer La Deshydratation Mecanique De Suspensions Et Boues Dorigines Industrielles Et Urbaines ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Combinaison innovante de traitements électriques et physico-chimiques pour améliorer la déshydratation mécanique de suspensions et boues d'origines industrielles et urbaines by :
Download or read book Combinaison innovante de traitements électriques et physico-chimiques pour améliorer la déshydratation mécanique de suspensions et boues d'origines industrielles et urbaines written by and published by . This book was released on 2012 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressurized electro-osmotic dewatering (PEOD) of three sewage sludges and electrofiltration of waste drilling mud were studied with a laboratory chamber simulating closely an industrial filter-press. This work focuses on the influence of conditioning on the electro-dewatering, the comparison between different cell configurations and the process parameters optimization. The influence of pH, salt and polyelectrolytes on the electro-osmotic dewatering of agroindustrial sludge was studied. It was shown the strong impact of the electrolyte concentration on the process and notably that a high salt concentration is detrimental to the electrodewatering. The electrolytic hydroxide and hydronium ions formed at the electrodes change the course of the electro-dewatering. The addition of polymeric coagulants or flocculants has not significant influence on the PEOD of the sludge for the concentrations usually employed in sewage plants. A laboratory parametric study was also carried out in order to optimize the electro-osmotic dewatering. Various cell configurations (with one or two drainage sides, electrode material, initial cake thickness, and electrode/filter cloth position) were compared. The following process parameters were also studied: mechanical pressure, power supply, electrical mode, and timing of current application. The electrofiltration of waste drilling mud at 40 A/m2 accelerated by 4.0-4.6 times the filtration rate without electric field with 0.05-0.13 kWh/kg supplementary removed water. The use of a laboratory cell able to remove electrolysis products generated at the electrodes allows maintaining a constant pH in the filter cake during the electrofiltration.
Book Synopsis Déshydratation mécanique de suspensions minérales en présence de dispersant by : Zied Soua
Download or read book Déshydratation mécanique de suspensions minérales en présence de dispersant written by Zied Soua and published by . This book was released on 2006 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de recherche constitue une contribution à l'amélioration de la déshydratation mécanique des suspensions minérales en présence de dispersants par filtration/fluidification. Deux procédés de filtration/fluidification mis en œuvre dans un filtre-presse de laboratoire ont été comparés. Le premier procédé implique une filtration simple (FS) avec ajout de dispersant dans la suspension initiale avant filtration. Pour le deuxième procédé, l'ajout est réalisé après filtration avec formation d'une précouche (FAP). La présence de dispersant permet de transformer le gâteau de filtration (à env. 73+-1 % massique) en une suspension de carbonate fluide (de même concentration), et ceci uniquement grâce à un faible apport d'énergie mécanique. Les caractéristiques des gâteaux de filtration obtenus (siccité, résistance spécifique, taille des particules et flocs, potentiel zêta) ont été comparées pour différentes concentrations en dispersant et pour les deux procédés de filtration/fluidification. Des mesures de turbidité et de conductivité, effectuées sur le filtrat, ont mis en évidence le rôle de la précouche vis-à-vis de la protection du tissu filtrant contre le colmatage par les fines particules et du filtrat contre la contamination par le dispersant. Une modélisation de la FAP a été effectuée. Le modèle développé tient en compte la variation de la pression au niveau de l'interface précouche - gâteau. Un autre modèle mathématique a été développé pour décrire la dépendance entre la viscosité, la concentration en solides et la taille des flocs pendant le processus de fluidification des gâteaux. Celui-ci, corrélé à des analyses rhéologiques expérimentales, a permis d'estimer la taille des flocs. Les résultats ont montrés que ces derniers sont plus faibles pour le procédé de FAP. En effet, dans le cas de la filtration simple, à cause d'une perte en dispersant dans le filtrat, la quantité réelle de dispersant qui reste piégé dans le gâteau est inférieure à celle qui reste dans le gâteau formé par filtration avec précouche. Ainsi, le procédé avec précouche est plus efficace d'un point de vue économique et environnemental.
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 Outil novateur by : Canada. Environment Canada. Section innovation technologique et secteurs industriels
Download or read book Outil novateur written by Canada. Environment Canada. Section innovation technologique et secteurs industriels and published by . This book was released on 2002 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Depuis leur création à la fin des années 1950, les technologies membranaires sont devenues des procédés de séparation ayant un grand impact au niveau industriel. Le marché, tant pour le traitement des solutions aqueuses que des solutions non aqueuses, est en pleine croissance. Leurs qualités principales - séparation physique sélective par différence de pression, obtention d'un perméat de qualité constante, récupération de matières premières - sont des atouts que peu de techniques offrent. De ce fait, que ce soit pour l'eau potable ou pour les eaux usées industrielles et municipales, les membranes, couplées ou non avec des traitements biologiques, physico-chimiques ou autres, sont des technologies à envisager sérieusement et, bien souvent, incontournables.
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 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:
