Review Of Constructed Subsurface Flow Vs Surface Flow Wetlands
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Wastewater Treatment In Constructed Wetlands With Horizontal Sub Surface Flow
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Author : Jan Vymazal
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-07-15
Wastewater Treatment In Constructed Wetlands With Horizontal Sub Surface Flow written by Jan Vymazal and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-07-15 with Technology & Engineering categories.
Wetlands have been used for uncontrolled wastewater disposal for centuries. However, the change in attitude towards wetlands during the 1950s and 1960s caused the minimization of the use of natural wetlands for wastewater treatment (at least in developed countries). Constructed wetlands have been used for wastewater treatment for about forty years. Constructed wetland treatment systems are engineered systems that have been designed and constructed to utilize the natural processes for removal of pollutants. They are designed to take advantage of many of the same processes that occur in natural wetlands, but do so within a more controlled environment. The aim of this book is to summarize the knowledge on horizontal s- surface flow constructed wetlands (HF CWs) and objectively evaluate their treatment efficiency under various conditions. The information on this type of wastewater treatment technology is scattered in many publications but a comprehensive summary based on world-wide experience has been lacking. The book provides an extensive overview of this treatment technology around the world, including examples from more than 50 countries and examples of various types of wastewater treated in HF CWs.
Constructed Wetlands For The Treatment Of Landfill Leachates
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Author : George Mulamoottil
language : en
Publisher: CRC Press
Release Date : 1998-09-29
Constructed Wetlands For The Treatment Of Landfill Leachates written by George Mulamoottil and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-09-29 with Technology & Engineering categories.
Constructed wetlands are proving to be the best natural treatment system for landfill leachates. Most of the contaminants in landfill leachates are degraded in treatment wetlands. Potential for long-term sustainability and significant cost savings are attractive features of this eco-technology. Documentation of the experience in this use of constructed wetlands has been limited. Constructed Wetlands for the Treatment of Landfill Leachates is the first compilation of the results of research from North America and Europe. Originally presented at an international symposium, this collection of papers offers the most recent research findings from the leading researchers in this new and innovative natural treatment system. Specific issues addressed in the text include: leachate characteristics, and the potential for treatability by constructed wetlands wetland treatment, processes and transformation use of constructed wetlands in cold climatic conditions assessment of the tolerance of wetland plants to the toxicity of leachates role of plants in the treatments of leachates integrated wetland systems performance of different wetland treatment systems cost comparisons of wetland technology vs. traditional treatment technologies The potential for environmental contamination due to leachates from landfills is increasing, and there is an urgent need to find ways and means to treat leachates in a sustainable way Constructed Wetlands for the Treatment of Landfill Leachates will provide an invaluable source of information on the subject for scientists, engineers, practitioners, policy makers, and regulatory officials.
Review Of Constructed Subsurface Flow Vs Surface Flow Wetlands
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Author :
language : en
Publisher:
Release Date : 2004
Review Of Constructed Subsurface Flow Vs Surface Flow Wetlands written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
The purpose of this document is to use existing documentation to review the effectiveness of subsurface flow and surface flow constructed wetlands in treating wastewater and to demonstrate the viability of treating effluent from Savannah River Site outfalls H-02 and H-04 with a subsurface flow constructed wetland to lower copper, lead and zinc concentrations to within National Pollutant Discharge Elimination System (NPDES) Permit limits. Constructed treatment wetlands are engineered systems that have been designed and constructed to use the natural functions of wetlands for wastewater treatment. Constructed wetlands have significantly lower total lifetime costs and often lower capital costs than conventional treatment systems. The two main types of constructed wetlands are surface flow and subsurface flow. In surface flow constructed wetlands, water flows above ground. Subsurface flow constructed wetlands are designed to keep the water level below the top of the rock or gravel media, thus minimizing human and ecological exposure. Subsurface flow wetlands demonstrate higher rates of contaminant removal per unit of land than surface flow (free water surface) wetlands, therefore subsurface flow wetlands can be smaller while achieving the same level of contaminant removal. Wetlands remove metals using a variety of processes including filtration of solids, sorption onto organic matter, oxidation and hydrolysis, formation of carbonates, formation of insoluble sulfides, binding to iron and manganese oxides, reduction to immobile forms by bacterial activity, and uptake by plants and bacteria. Metal removal rates in both subsurface flow and surface flow wetlands can be high, but can vary greatly depending upon the influent concentrations and the mass loading rate. Removal rates of greater than 90 per cent for copper, lead and zinc have been demonstrated in operating surface flow and subsurface flow wetlands. The constituents that exceed NPDES limits at outfalls H-02 a nd H-04 are similar in nature and within typical concentrations found in municipal wastewaters, mine drainage and landfill leachate, all of which have been successfully treated in constructed wetlands. Contaminant-specific removal rates required to bring outfall H-02 and H-04 effluents to within NPDES limits have been achieved by various types of wetlands, including SSF wetlands. Therefore a constructed wetland would be a viable approach for treating effluent from the two outfalls. SSF wetlands generally can be smaller than SF wetlands for a particular wastewater flow, but can cost more per acre. Thus the potential range of costs for constructing a SSF system may overlap with the cost range predicted for a SF system. However, capital costs and operations and maintenance costs for both SSF and SF wetland treatment systems are lower than for conventional wastewater treatment systems. Preliminary scoping level cost estimates for a SSF and a SF system for outfalls H-02 and H-04 are presented in this document using a range of values found in the literature.
Vertical Flow Constructed Wetlands
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Author : Alexandros Stefanakis
language : en
Publisher: Newnes
Release Date : 2014-06-26
Vertical Flow Constructed Wetlands written by Alexandros Stefanakis and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-06-26 with Technology & Engineering categories.
Vertical flow constructed wetlands for wastewater and sludge treatment represent a relatively new and still growing technology. Vertical Flow Constructed Wetlands is the first book to present the state-of-the-art knowledge regarding vertical flow constructed wetlands theory and applications. In this book, you will learn about vertical flow systems with information about application and performance. Vertical Flow Constructed Wetlands also includes information on how different countries are applying the technology, with design guidelines to illustrate best practices worldwide. A focus on water conservation through reuse of treated water showcases the benefit of vertical flow construction, which has greatly increased the attractiveness of the technology in recent years. - All state-of-the-art knowledge regarding vertical flow constructed wetlands gathered in one book - A review of various constructed wetland approaches, including information about applications and performance, helps clarify what is currently known about constructed wetland principles and design - Discussion of how to manage the treated wastewater leaving the vertical flow for increasing biodiversity, providing food and habitat for birds, and producing harvestable biomass or crops - Includes case studies of constructed wetlands in developing countries
Treatment Wetlands
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Author : Gabriela Dotro
language : en
Publisher: IWA Publishing
Release Date : 2017-11-15
Treatment Wetlands written by Gabriela Dotro and has been published by IWA Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-15 with Science categories.
Contents: Overview of Treatment Wetlands; Fundamentals of Treatment Wetlands; Horizontal Flow Wetlands; Vertical Flow Wetlands; French Vertical Flow Wetlands; Intensified and Modified Wetlands; Free Water Surface Wetlands; Other Applications; Additional Aspects.
Subsurface Flow Constructed Wetlands For Wastewater Treatment
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Author : Sherwood C. Reed
language : en
Publisher:
Release Date : 1993
Subsurface Flow Constructed Wetlands For Wastewater Treatment written by Sherwood C. Reed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Constructed wetlands categories.
Artificial Or Constructed Wetlands
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Author : María del Carmen Durán-Domínguez-de-Bazúa
language : en
Publisher: CRC Press
Release Date : 2018-06-15
Artificial Or Constructed Wetlands written by María del Carmen Durán-Domínguez-de-Bazúa and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-15 with Nature categories.
Artificial or constructed wetlands are an emerging technology particularly for tropical areas with water scarcity. For big cities, the sustainable management of water resources taking into account proper use is always challenging. The book presents case studies illustrating the above. As plants and microorganisms are a fundamental part of the correct functioning of these systems, their contribution to the degradation of the organic matter and to the removal and transformation of the pollutant compounds present in the wastewaters is also a highlight of this book.
Comprehensive Biotechnology
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Author :
language : en
Publisher: Newnes
Release Date : 2011-08-26
Comprehensive Biotechnology written by and has been published by Newnes this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-08-26 with Science categories.
The second edition of Comprehensive Biotechnology, Six Volume Set continues the tradition of the first inclusive work on this dynamic field with up-to-date and essential entries on the principles and practice of biotechnology. The integration of the latest relevant science and industry practice with fundamental biotechnology concepts is presented with entries from internationally recognized world leaders in their given fields. With two volumes covering basic fundamentals, and four volumes of applications, from environmental biotechnology and safety to medical biotechnology and healthcare, this work serves the needs of newcomers as well as established experts combining the latest relevant science and industry practice in a manageable format. It is a multi-authored work, written by experts and vetted by a prestigious advisory board and group of volume editors who are biotechnology innovators and educators with international influence. All six volumes are published at the same time, not as a series; this is not a conventional encyclopedia but a symbiotic integration of brief articles on established topics and longer chapters on new emerging areas. Hyperlinks provide sources of extensive additional related information; material authored and edited by world-renown experts in all aspects of the broad multidisciplinary field of biotechnology Scope and nature of the work are vetted by a prestigious International Advisory Board including three Nobel laureates Each article carries a glossary and a professional summary of the authors indicating their appropriate credentials An extensive index for the entire publication gives a complete list of the many topics treated in the increasingly expanding field
Greenhouse Gas Emissions From Ecotechnologies For Wastewater Treatment
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Author : Juan Pablo Silva Vinasco
language : en
Publisher: CRC Press
Release Date : 2021-02-25
Greenhouse Gas Emissions From Ecotechnologies For Wastewater Treatment written by Juan Pablo Silva Vinasco and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-25 with Science categories.
Ecotechnologies for wastewater treatment (EWWT) have been used as a cost-effective alternative to conventional wastewater treatment methods for improving the removal of organic carbon, nutrients and pathogenic microorganisms from wastewater. However, due to biochemical transformations of organic matter and nutrients EWWT are net sources of CO2, CH4 and N2O greenhouse gases (GHGs), which may be transferred into the atmosphere contributing to global warming. Greenhouse Gas Emissions from Ecotechnologies for Wastewater Treatment provides scientific information about greenhouse gas, such as CO2, CH4 and N2O, generation and emissions from different municipal EWWT. The main EWWT considered in this book are anaerobic ponds, facultative ponds, duckweed-based ponds, and a freshwater natural wetland perturbed by anthropogenic activities such as wastewater discharge and nutrients from agricultural run-off. The book includes a full literature review of recent publications about GHGs emissions from EWWT. It also introduces the calculation of GHGs flux using a static chamber technique. Besides, the book presents information on the influence of environmental factors such as temperature, pH, DO, and nutrients on GHG emissions produced in EWWT under tropical conditions. This book will be a useful reference for researches and students interested in the broader area of water and climate change subjects. The publication may also be of interest to policy makers concerned with climate change, water sector planning, and wastewater treatment.
Bioremediation For Environmental Sustainability
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Author : Vineet Kumar
language : en
Publisher: Elsevier
Release Date : 2020-08-28
Bioremediation For Environmental Sustainability written by Vineet Kumar and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-28 with Technology & Engineering categories.
Bioremediation for Environmental Sustainability: Approaches to Tackle Pollution for Cleaner and Greener Society discusses many recently developed and successfully applied bio/phytoremediation technologies for pollution control and minimization, which are lacking more comprehensive coverage in previous books. This book describes the scope and applications of bio/phytoremediation technologies and especially focuses on the associated eco-environmental concerns, field studies, sustainability issues, and future prospects. The book also examines the feasibility of environmentally friendly and sustainable bio/phytoremediation technologies to remediate contaminated sites, as well as future directions in the field of bioremediation for environmental sustainability. - Illustrates the importance of microbes and plants in bio/phytoremediation and wastewater treatment - Includes chapters on original research outcomes pertaining to pollution, pollution abatement, and associated bioremediation technologies - Covers emerging bioremediation technologies, including electro-bioremediation, microbial fuel cell, nano-bioremediation, constructed wetlands, and more - Highlights key developments and challenges in bioremediation and phytoremediation technologies - Describes the roles of relatively new approaches in bio/phytoremediation, including molecular engineering and omics technologies, microbial enzymes, biosurfactants, plant-microbe interactions, genetically engineered organisms, and more