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Slow sand filtration is typically cited as being the first "engineered" process in drinking-water treatment. Proven modifications to the conventional slow sand filtration process, the awareness of induced biological activity in riverbank filtration systems, and the growth of oxidant-induced biological removals in more rapid-rate filters (e.g. biological activated carbon) demonstrate the renaissance of biofiltration as a treatment process that remains viable for both small, rural communities and major cities. Biofiltration is expected to become even more common in the future as efforts intensify to decrease the presence of disease-causing microorganisms and disinfection by-products in drinkin...
This book provides a state-of-the-art assessment on a variety of biofiltration water treatment systems from studies conducted around the world. The authors collectively represent a perspective from 23 countries and include academics/researchers, biofiltration system users, designers, and manufacturers. Progress in Slow Sand and Alternative Biofiltration Processes - Further Developments and Applications offers technical information and discussion to provide perspective on the biological and physical factors affecting the performance of slow sand filtration and biological filtration processes. Chapters were submitted from the 5th International Slow Sand and Alternative Biological Filtration Conference, Nagoya, Japan in June 2014. Authors: Nobutada Nakamoto, Shinshu University, Japan, Nigel Graham, Imperial College London, UK, M. Robin Collins, University of New Hampshire, Durham, NH, USA and Rolf Gimbel,Universität Duisburg, Essen, Germany.
Environmental issues stretch across scales of geographic space and require action at multiple levels of jurisdiction, including the individual level, community level, national level, and global level. Much of the scholarly work surrounding new approaches to environmental governance tends to overlook the role of sub-national governments, but this study examines the potential of sub-national participation to make policy choices which are congruent with global strategies and national mandates. This book investigates the emerging actors and new channels of Japan’s environmental governance which has been taking shape within an increasingly globalized international system. By analysing this impo...
This book covers filtration in various modes of operation for both solid/gas and solid/liquid suspensions. It provides the necessary knowledge and background information to prepare and equip persons who are interested in serious filtration work. It is a useful reference/text for students and practicing engineers. It can also be adopted as an advanced text book for various engineering courses in chemical, environmental, mechanical and metallurgical engineering. The book presents analysis and treatment of filtration processes employing different filter media operating in various modes for both gas/solid and liquid/solid systems. Presents a concise overview of filtration enabling full understan...
A comprehensive and up-to-date account of filtration in solid-liquid separation processes, with a sharp focus on the influence of pro-cess variables on performance and specific applications is pre-sented in this volume. With contribu-tions from researchers with significant industrial experi-ence, as well as by senior academics, this publication fea-tures a deep bed filtration overview with informa-tion on mathematical modeling and application in wastewater treat-ment. Pre-treatment filtration techniques such as cartridge filters, pre-coat filters and micro screening are included. Membrane filtration processes to remove dis-solved and suspended solids for the recovery of valuable ma-terials and the provision of high quality water are covered. Sludge de-watering methods such as centrifuga-tion, and vacuum and pressure filtration are described. Application status data, tables, figures and diagrams are also included. This volume is of special interest to practicing engineers and technolo-gists dealing with treatment problems requiring filtration solu-tions and to graduate students in environmental engineering.
Chittaranjan Ray, Ph. D. , P. E. University of Hawaii at Mãnoa Honolulu, Hawaii, United States Jürgen Schubert, M. Sc. Stadtwerke Düsseldorf AG Düsseldorf, Germany Ronald B. Linsky National Water Research Institute Fountain Valley, California, United States Gina Melin National Water Research Institute Fountain Valley, California, United States 1. What is Riverbank Filtration? The purpose ofthis book is to show that riverbank filtration (RBF) isa low-cost and efficient alternative water treatment for drinking-water applications. There are two immediate benefits to the increased use of RBF: Minimized need for adding chemicals like disinfectants and coagulants to surface water to control pa...
Particles in water play an important role in all kinds of water quality and treatment issues. Since the early beginnings of centralised water production and treatment, the main goal of water purification was primarily the removal of water turbidity in order to produce clear water free from visible particles. The Handbook on Particle Separation Processes provides knowledge and expertise from a selected group of international experts with a wealth of experience in the field of particles and particle separation in water and wastewater treatment. The Handbook on Particle Separation Processes includes an edited selection of presentations and workshops held at the academic summer school Particle Separation in Water and Wastewater Treatment, organised under the supervision of the IWA Specialist Group Particle Separation.
Granular filtration is a technique used extensively in the water and sewage industries, and we would all be quickly aware if it did not work properly. Designing and building an effective granular filter is a science and an art: this book covers both aspects. The theoretical basis of design is given considerable exposure, as are the behavioural characteristics of particles and fluids. This new edition contains extra material on stochastic simulations and the Lattice Bolzmann approach for studying deposition in granular media; more on prediction methods for collection efficiency, and a chapter on the various available software programmes. - Written by the world's leading expert on depth filtration - Fully updated to include the latest approaches to studying granular filtration
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This volume cover many aspects of the Rhine ecosystem, including: biological communities in the river affected by environmental changes; emission and fate of pollutants; accidental spills; ecotoxicological effects; and restoration of fish stocks and floodplain ecosystems.