Download or read book Design of Subsurface Flow Constructed Wetlands for Domestic Wastewater Treatment written by Alper Aksit and published by . This book was released on 1993 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vertical Flow Constructed Wetlands written by Alexandros Stefanakis and published by Newnes. This book was released on 2014-06-26 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Subsurface Flow Constructed Wetlands for Wastewater Treatment written by Sherwood C. Reed and published by . This book was released on 1993 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Constructed Subsurface Wetlands written by Abdel Razik Ahmed Zidan and published by CRC Press. This book was released on 2018-01-03 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a sharp focus on environmental pollution and its impact on life and nature, scientists and engineers have studied the water treatment effect of natural wetlands for many years, resulting in the development of constructed wetlands (CWs) for treating wastewater. This informative new book provides current information and guidance on the construction, performance, operation, and maintenance of subsurface flow constructed wetlands of domestic and municipal wastewater. The focus of the volume is to evaluate the performance of horizontal subsurface flow constructed wetlands in treating domestic wastewater to establish the limit that can be safely discharged to agricultural drains. Two-step procedures were used for the preparation of this book. Using modeling and statistical analyses of treated water samples showed a significant difference between different media for the treatment of most pollutants. The authors went on to design artificial neural network models (ANNs) using Matlab software to simulate some of the experimental data and to anticipate the parameters of output concentration. The wetland systems have the ability to deal with various pollutants with different concentrations and to decrease the treated water to the standard limits. This volume presents the main role of emergent plants for treatment performance in the constructed wetlands and will be a very important resource for engineers in this field as well as for both undergraduate and graduate students.
Download or read book Guidance for Design and Construction of a Subsurface Flow Constructed Wetland written by Sherwood C. Reed and published by DIANE Publishing. This book was released on 1997 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides guidance in the selection, design, construction, and operation of subsurface flow constructed wetlands. The information is necessary, especially for small communities, where there has been considerable effort to construct and maintain treatment facilities cost-efficiently, capitalizing on the minimal energy requirements of this technology. Contents: factors capable of influencing performance expectations; design and construction considerations (calculating design require., recommended design and construction considerations); and operational considerations.
Download or read book Subsurface Flow Constructed Wetlands for the Treatment of Domestic Wastewater written by Tanveer Ferdous Saeed and published by . This book was released on 2010 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes in detail the background, methods, results, and conclusions of a three-year PhD research project - "subsurface flow constructed wetlands for the treatment of domestic wastewater", which was undertaken at Monash University between April 2008 and December 2010. The overall objective of the research was to discover the efficiencies of key pollutant removals (organics, nutrients, solids, and coliforms), when a medium-strength wastewater is treated in different types of subsurface flow wetlands, and how the pollutant removal should be modelled to reflect the biodegradation kinetics of the pollutants. The research was designed and carried out in four phases:In phase 1, a comparative experiment was carried out to understand how wetland media may affect the removal of organics and nitrogen; special focus was on studying the nitrification-denitrification process in hybrid wetland systems with an unconventional organic-containing wetland media (wood-mulch). The results indicated simultaneous nitrification-denitrification in vertical flow wetlands with organic mulch media, primarily due to greater oxygen flux in the wetland matrix and the supply of organic carbon from the media. In contrast, this unconventional media was found to be inefficient when it is applied in horizontal flow wetlands, as anoxic conditions caused excessive leaching of organics from the media. The monitoring of the performances of different wetland units, during this phase, allowed the selection of an effective hybrid wetland system for further experiments, to monitor pollutant removal stability in the next phase. In phase 2, experiments were carried out in three hybrid wetland systems that had identical configurations, plants (Phragmites australis), and media (including gravel, wood-mulch, and zeolite). The three systems were operated under different pollutant and hydraulic loadings, to monitor the removal of nitrogen and organics. The results demonstrated stable nitrogen and organics removal efficiencies within the range of hydraulic and pollutant loading variations. The media of wood-mulch and zeolite were found, or further confirmed, to enhance nitrogen removal in vertical flow wetlands, by enhancing simultaneous nitrification-denitrification and adsorption of ammonia. Horizontal flow wetlands with the traditional gravel media showed abilities to remove nitrate and the excess organics that was leached into the wastewater from wood-mulch media and, within the experiment range, the mass removals of nitrate and COD in the horizontal flow wetlands were found to increase with their loadings.In phase 3, kinetic models were developed to describe the biodegradation of nitrogen and organics removal in wetland systems. Reaction kinetics that were considered in the model development included first-order, Monod and multiple-Monod-kinetics; these kinetics were combined with continuous-stirred tank reactor (CSTR) or plug-flow pattern, to produce equations that link the inlet and outlet concentrations of each key pollutants across a single wetland. Using three statistical parameters, a critical evaluation was made to evaluate the suitability of five potential models for describing pollutant removals in vertical and horizontal flow wetlands. The results recommended the models that were derived from Monod kinetics for nitrogen and organics removal in both vertical and horizontal flow wetland systems.Finally, in phase 4 a simple MATLAB programme was established, based on the model studies in the previous phase, to provide a potential design tool for determining the surface area of a single subsurface (vertical or horizontal) flow wetland, when it is required to achieve a given pollutant removal target. The MATLAB programme can also be used to predict the performances of existing wetland systems.In order to assist readers to track the results of four phases of this research in its logic sequence, the thesis has been arranged to contain seven chapters. Chapters 1-2 describe the scope and objectives of the research and a literature survey on the technical development of subsurface flow wetlands for wastewater treatment. Chapters 3-6 describe in sequence the detailed methods and results of the four phases of the research. Overall conclusions are presented in Chapter 7. Four publications, including three ISI journal papers and one international conference paper, have been produced as a direct result of the research. The papers are attached in Appendix I, and all the original experiment records are attached in Appendix II.Overall, this research improved the current understanding of the removal of ammonia, nitrate, COD and BOD in vertical and horizontal flow wetlands. In addition, it produced kinetic models to describe the removal of these pollutants, potentially allowing model-based design of vertical and horizontal flow constructed wetlands for the direct treatment and reclamation of medium-strength wastewater.
Download or read book Experimental and Modeling Studies of Horizontal Subsurface Flow Constructed Wetlands Treating Domestic Wastewater written by Njenga Mburu and published by CRC Press. This book was released on 2014-01-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainable sanitation and water pollution control calls for adoption of affordable and efficient wastewater treatment technologies. In the developing countries, the safe management of wastewater is not widespread. There is therefore a need for an appropriate technology that can reliably achieve acceptable effluent quality for discharge to the environment at minimal cost. Constructed wetland (CW) systems have been used as a cost effective alternative to conventional methods of wastewater treatment. However, the mechanistic understanding of the CW has not matured, while performance data that can guide design and operation of CW under tropical climate are scarce. This study explores the treatment of domestic wastewater with subsurface constructed wetlands, in order to provide performance data that can influence design and operation of CW under tropical conditions and to evaluate the processes involved with the transformation and degradation of organic matter and nutrients. The thesis contributes to performance data and getting a better mechanistic understanding about the factors influencing the performance of horizontal subsurface flow constructed wetland (HSSF-CW) treating real domestic wastewater under tropical conditions. The findings obtained in this research may prove useful towards the wider application of the constructed wetland wastewater treatment technology and the optimization of full-scale HSSF-CW.
Download or read book Treatment Wetlands written by Gabriela Dotro and published by IWA Publishing. This book was released on 2017-11-15 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Wastewater Treatment in Constructed Wetlands with Horizontal Sub Surface Flow written by Jan Vymazal and published by Springer Science & Business Media. This book was released on 2008-07-15 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Wetland Technology written by Guenter Langergraber and published by IWA Publishing. This book was released on 2019-10-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water quality standards across the world are being re-written to promote healthier ecosystems, ensure safe potable water sources, increased biodiversity, and enhanced ecological functions. Treatment wetlands are used for treating a variety of pollutant waters, including municipal wastewater, agricultural and urban runoff, industrial effluents, and combined sewer overflows, among others. Treatment wetlands are particularly well-suited for sustainable water management because they can cope with variable influent loads, can be constructed of local materials, have low operations and maintenance requirements compared to other treatment technologies, and they can provide additional ecosystem services. The technology has been successfully implemented in both developed and developing countries. The first IWA Scientific and Technical Report (STR) on Wetland Technology was published in 2000. With the exponential development of the technology since then, the generation of a new STR was facilitated by the IWA Task Group on Mainstreaming Wetland Technology. This STR was conceptualized and written by leading experts in the field. The new report presents the latest technology applications within an innovative planning framework of multi-purpose wetland design. It also includes practical design information collected from over twenty years of experience from practitioners and academics, covering experiments at laboratory and pilot-scale up to full-scale applications. Scientific and Technical Report No.27
Download or read book Manual constructed wetlands treatment of municipal wastewaters written by and published by DIANE Publishing. This book was released on with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Constructed Wetlands and Sustainable Development written by Gary Austin and published by Routledge. This book was released on 2016-08-25 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains how with careful planning and design, the functions and performance of constructed wetlands can provide a huge range of benefits to humans and the environment. It documents the current designs and specifications for free water surface wetlands, horizontal and vertical subsurface flow wetlands, hybrid wetlands and bio retention basins; and explores how to plan, engineer, design and monitor these natural systems. Sections address resource management (landscape planning), technical issues (environmental engineering and botany), recreation and physical design (landscape architecture), and biological systems (ecology). Site and municipal scale strategies for flood management, storm-water treatment and green infrastructure are illustrated with case studies from the USA, Europe and China, which show how these principles have been put into practice. Written for upper level students and practitioners, this highly illustrated book provides designers with the tools they need to ensure constructed wetlands are sustainably created and well manage
Download or read book Constructed Wetlands for Water Quality Improvement written by Gerald A. Moshiri and published by CRC Press. This book was released on 2020-09-23 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: Constructed Wetlands for Water Quality Improvement is a virtual encyclopedia of state-of-the-art information on the use of constructed wetlands for improving water quality. Well-organized and easy-to-use, this book features contributions from prominent scientists and provides important case studies. It is ideal for anyone involved in the application of constructed wetlands in treating municipal and industrial wastewater, mine drainage, and non-point source pollution. Constructed Wetlands for Water Quality Improvement is a "must" for industrial and municipal water treatment professionals, consulting engineers, federal and state regulators, wetland scientists and professionals, ecologists, environmental health professionals, planners, and industrial environmental managers.
Download or read book Constructed Wetlands for Industrial Wastewater Treatment written by Alexandros I. Stefanakis and published by John Wiley & Sons. This book was released on 2018-08-20 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: A groundbreaking book on the application of the economic and environmentally effective treatment of industrial wastewater Constructed Wetlands for Industrial Wastewater Treatment contains a review of the state-of-the-art applications of constructed wetland technology for industrial wastewater treatment. This green technology offers many economic, environmental, and societal advantages. The text examines the many unique uses and the effectiveness of constructed wetlands for the treatment of complex and heavily polluted wastewater from various industrial sources. The editor — a noted expert in the field — and the international author team (93 authors from 22 countries) present vivid examples of the current state of constructed wetlands in the industrial sector. The text is filled with international case studies and research outcomes and covers a wide range of applications of these sustainable systems including facilities such as the oil and gas industry, agro-industries, paper mills, pharmaceutical industry, textile industry, winery, brewery, sludge treatment and much more. The book reviews the many system setups, examines the different removal and/or transformational processes of the various pollutants and explores the overall effectiveness of this burgeoning technology. This important resource: Offers the first, groundbreaking text on constructed wetlands use for industrial wastewater treatment Provides a single reference with summarized information and the state-of-the-art knowledge of the use of Constructed Wetlands in the industrial sector through case studies, research outcomes and review chapters Covers a range of industrial applications such as hydrocarbons/oil and gas industry, food and beverage, wood and leather processing, agro-industries, pharmaceuticals and many others Includes best practices drawn by a collection of international case studies Presents the latest technological developments in the industry Written for civil and environmental engineers, sustainable wastewater/water managers in industry and government, Constructed Wetlands for Industrial Wastewater Treatment is the first book to offer a comprehensive review of the set-up and effectiveness of constructed wetlands for a wide range of industrial applications to highlight the diverse economic and environmental benefits this technology brings to the industry.
Download or read book Pollutant Transport in Constructed Subsurface Flow Wetlands written by Tuan Le Anh and published by LAP Lambert Academic Publishing. This book was released on 2011-05 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pollutant transport mechanisms and parameters in constructed subsurface flow wetlands. In recent years, there has been an increasing trend towards the application of constructed wetland wastewater treatment as a decentralized wastewater management solution. Small scale approaches for domestic wastewater treatment offer alternatives that adapt the different sustainability considerations including low cost design installation, operation and maintenance. The design of a constructed wetland should be not only environmentally sound but also economical. The research purpose is to gain an insight into its internal working with focus on the hydraulic regime. To achieve a better understanding of pollutant transport mechanisms and parameters in a sand bed, a physical horizontal sand column model and an experimental constructed subsurface flow wetland were developed. These studies provide new insights on the inner functioning of the constructed wetland and allowed to make recommendation for a constructed subsurface flow wetland design in the Mekong Delta.
Download or read book Constructed Wetlands for the Treatment of Landfill Leachates written by George Mulamoottil and published by CRC Press. This book was released on 1998-09-29 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Subsurface Flow Constructed Wetlands written by Amanda Yvette Richmond and published by . This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
