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Books > Earth & environment > Earth sciences > The hydrosphere > General

Drinking Water Chemistry - A Laboratory Manual (Hardcover): Barbara Hauser Drinking Water Chemistry - A Laboratory Manual (Hardcover)
Barbara Hauser
R5,766 Discovery Miles 57 660 Ships in 10 - 15 working days

Whether you are a new employee or seasoned professional you need easy access to the latest test methods, updated quality control procedures, and calculations at your fingertips. You need to perform analyses quickly and easily and troubleshoot problems as they arise. You need a resource that is not only informative, but also practical and easy to use. Drinking Water Chemistry: A Laboratory Manual fills this need. The book gives you a thorough overview of the most basic, and therefore important, laboratory topics such as: Laboratory Safety - dos and don'ts based on real experience Sampling - preservation techniques, online sampling, and record keeping Laboratory Instruments - practical use ranges, principles of operation, calibration, conditioning, useful life and replacement, common quality control issues Chemical Use - reagents, standards, indicators, purpose and use, chemical quality and properties, avoidance of contamination, molecular weight calculations Quality Control - replicate analyses, spiked, split, and reference samples, percent recovery of standard, standard deviation, control charts, and everyday quality control measures Weights and Concentrations - care and analytical balances, mathematical conversions among concentration units, dilutions and concentration changes The remaining chapters cover test analysis including: reason for the test, type of sample taken, treatment plant control significance, expected range of results, appropriate quality control procedures, apparatus used, reagents, including function, concentration and instructions for preparation, procedural steps, calculations and notes on possible problems, and references. This is a working manual, meant to be kept by your side in the lab, not on the shelf in an office or library. You can bend it, you can lay it flat, you can take it anywhere you do your job.

Sanitary Landfill Leachate - Generation, Control and Treatment (Hardcover): Syed R. Qasim Sanitary Landfill Leachate - Generation, Control and Treatment (Hardcover)
Syed R. Qasim
R5,784 Discovery Miles 57 840 Ships in 10 - 15 working days

Sanitary landfills are the most widely utilized method of solid waste disposal around the world. With increased use and public awareness of this method of disposal, there is much concern with respect to the pollution potential of the landfill leachate. Depending on the composition and extent of decomposition of the refuse and hydrological factors, the leachate may become highly contaminated. As leachate migrates away from a landfill, it may cause serious pollution to the groundwater aquifer as well as adjacent surface waters. There is growing concern about surface and groundwater pollution from leachate. Better understanding and prediction of leachate generation, containment, and treatment are needed. This book contains a literature review of various methodologies that have been developed for prediction, generation, characterization, containment, control, and treatment of leachate from sanitary landfills. The contents of this book are divided into nine chapters. Each chapter contains theory and definition of the important design parameters, literature review, example calculations, and references. Chapter 1 is devoted to basic facts of solid waste problems current status and future trends towards waste reduction and recycling. Chapter 2 provides a general overview of municipal solid waste generation, collection, transport, resource recovery and reuse, and disposal options. The current status of sanitary landfill design and operation, problems associated with the landfilling, and future trends are presented in Chapter 3. Methods of enhanced stabilization, recycling landfill space, methane recovery, and above grade landfilling, and closure and post closure care of completed landfills are also discussed in detail. Chapter 4 provides a general overview of Subtitle D regulations and its impact upon sanitary landfilling practices. Chapter 5 is devoted entirely to moisture routing and leachate generation mechanisms.

The Essential Handbook of Ground-Water Sampling (Hardcover): David M. Nielsen, Gillian Nielsen The Essential Handbook of Ground-Water Sampling (Hardcover)
David M. Nielsen, Gillian Nielsen
R5,781 Discovery Miles 57 810 Ships in 10 - 15 working days

Tremendous improvements in ground-water sampling methodologies and analytical technologies have made it possible to collect and analyze truly representative samples to detect increasingly lower levels of contaminants-now in the sub-parts-per-billion range. Though these new methods produce more accurate and precise data and are less expensive, many companies and government agencies are reluctant to update their sampling protocols and regulations claiming the transition would be too costly. The Essential Handbook of Ground-Water Sampling clearly details the economic and scientific case for adopting these new methodologies. Citing examples of unnecessary expenditure due to the inaccuracy of out-dated techniques, the editors point out that the expense of making incorrect decisions based on poor quality samples clearly negates any savings that might be realized by using older, more inefficient, and effectively short-sighted, methods. Using numerous figures, tables, and references to recent research, the editors explain the efficiency of utilizing newer, more accurate, techniques that produce higher quality data. The text provides a detailed discussion of every aspect of ground-water sampling from the development of a sampling and analysis plan, through sample collection, pre-treatment, handling, shipping, and analysis, to the documentation, interpretation, and presentation of ground-water quality data. Successful sampling events and accurate data provide a sound foundation for making important, potentially expensive decisions regarding site monitoring, risk assessment, remediation, and closure. Armed with the information presented in this handbook, environmental professionals will be able to make sound technological and economic decisions regarding the choice of sampling equipment, methodologies, and procedures to meet their site-specific objectives and ensure the success of their ground-water sampling programs.

Model Calibration and Parameter Estimation - For Environmental and Water Resource Systems (Hardcover, 2015 ed.): Ne-Zheng Sun,... Model Calibration and Parameter Estimation - For Environmental and Water Resource Systems (Hardcover, 2015 ed.)
Ne-Zheng Sun, Alexander Sun
R4,189 Discovery Miles 41 890 Ships in 18 - 22 working days

This three-part book provides a comprehensive and systematic introduction to these challenging topics such as model calibration, parameter estimation, reliability assessment, and data collection design. Part 1 covers the classical inverse problem for parameter estimation in both deterministic and statistical frameworks, Part 2 is dedicated to system identification, hyperparameter estimation, and model dimension reduction, and Part 3 considers how to collect data and construct reliable models for prediction and decision-making. For the first time, topics such as multiscale inversion, stochastic field parameterization, level set method, machine learning, global sensitivity analysis, data assimilation, model uncertainty quantification, robust design, and goal-oriented modeling, are systematically described and summarized in a single book from the perspective of model inversion, and elucidated with numerical examples from environmental and water resources modeling. Readers of this book will not only learn basic concepts and methods for simple parameter estimation, but also get familiar with advanced methods for modeling complex systems. Algorithms for mathematical tools used in this book, such as numerical optimization, automatic differentiation, adaptive parameterization, hierarchical Bayesian, metamodeling, Markov chain Monte Carlo, are covered in details. This book can be used as a reference for graduate and upper level undergraduate students majoring in environmental engineering, hydrology, and geosciences. It also serves as an essential reference book for professionals such as petroleum engineers, mining engineers, chemists, mechanical engineers, biologists, biology and medical engineering, applied mathematicians, and others who perform mathematical modeling.

Hydraulics for Operators (Hardcover): Barbara Hauser Hydraulics for Operators (Hardcover)
Barbara Hauser
R5,902 Discovery Miles 59 020 Ships in 10 - 15 working days

This important new reference addresses the principles and calculations dealing with the hydraulics of water systems. Hydraulics for Operators includes what is necessary for a basic understanding of water and wastewater utility operations, and it emphasizes practical applications of these principles. This practical reference covers a wide variety of important subjects such as mass density and flow, pressure, open channel flow, pumping, friction loss, and flow measurement. Hydraulics for Operators is loaded with graphics, and sample exercises are included to ensure this new book is an easily understood reference. It is a must for your operator library.

Environmental Modelling with GIS and Remote Sensing (Hardcover): Andrew Skidmore Environmental Modelling with GIS and Remote Sensing (Hardcover)
Andrew Skidmore
R5,775 Discovery Miles 57 750 Ships in 10 - 15 working days

Most government agencies and private companies are investing significant resources in the production and use of geographical data. The capabilities of Geographical Information Systems (GIS) for data analysis are also improving, to the extent that the potential performance of GIS software and the data available for analysis outstrip the abilities of managers and analysts to use and analyze the information. This is especially true for environmental applications. Here the need to keep up-to-date is essential for providing effective and efficient services. Environmental Modeling with GIS and Remote Sensing derives from a training course run by ITC for professionals and managers in the environmental sciences, detailing the applications of remote sensing and GIS for environmental modeling and assessment. It sets out the current research results and provides operational methods for environmental mapping and monitoring.

Geothermal, Wind and Solar Energy Applications in Agriculture and Aquaculture (Hardcover): Jochen Bundschuh, Guangnan Chen, D.... Geothermal, Wind and Solar Energy Applications in Agriculture and Aquaculture (Hardcover)
Jochen Bundschuh, Guangnan Chen, D. Chandrasekharam, Janusz Piechocki
R6,356 Discovery Miles 63 560 Ships in 10 - 15 working days

The agri-food chain consumes about one third of the world's energy production with about 12% of it for crop production and nearly 80% for processing, distribution, retail, preparation and cooking. The agri-food chain also accounts for 80-90% of total global freshwater use where 70% alone is for irrigation. Additionally, on a global scale, freshwater production consumes nearly 15% of the entire energy production. It can therefore be argued that making agriculture and the agri-food supply chain independent from fossil fuel use has a huge potential to contribute to global food security and climate protection not only for the next decades but also for the coming century. Provision of secure, accessible and environmentally sustainable supplies of water, energy and food must thus be a priority. One of the major objectives of the world's scientists, farmers, decisions makers and industrialists is to overcome the present dependence on fossil fuels in the agro-food sector. This dependency increases the volatility of food prices and affects economic access to sustenance. This book provides a critical review of recent developments in solar, wind and geothermal energy applications in agriculture and the agro-food sector such as processing, distribution, retail, preparation and cooking.

An Integrated Approach for the Improvement of Flood Control and Drainage Schemes in the Coastal Belt of Bangladesh (Hardcover):... An Integrated Approach for the Improvement of Flood Control and Drainage Schemes in the Coastal Belt of Bangladesh (Hardcover)
Liakath Ali
R5,765 Discovery Miles 57 650 Ships in 10 - 15 working days

This study describes the development of water management in Bangladesh, including flood control and drainage schemes. The present landuse situation and hydrological conditions are presented and the coastal lowland development of Southeast Asia is reviewed. A performance analysis of different flood control and drainage systems are discussed, with reference to the coastal belt of Bangladesh. This book aims to set out an approach for sustainable development and water management for coastal Bangladesh, developing the concepts of effective techniques, tools and institutional infrastructure which should support implementation of flood control and drainage schemes.

Point Cloud Data Fusion for Enhancing 2D Urban Flood Modelling (Paperback): Vorawit Meesuk Point Cloud Data Fusion for Enhancing 2D Urban Flood Modelling (Paperback)
Vorawit Meesuk
R3,086 Discovery Miles 30 860 Ships in 10 - 15 working days

Modelling urban flood dynamics requires proper handling of a number of complex urban features. Although high-resolution topographic data can nowadays be obtained from aerial LiDAR surveys, such top-view LiDAR data still have difficulties to represent some key components of urban features. Incorrectly representing features like underpasses through buildings or apparent blockage of flow by sky trains may lead to misrepresentation of actual flood propagation, which could easily result in inadequate flood-protection measures. Hence proper handling of urban features plays an important role in enhancing urban flood modelling. This research explores present-day capabilities of using computer-based environments to merge side-view Structure-from-Motion data acquisition with top-view LiDAR data to create a novel multi-source views (MSV) topographic representation for enhancing 2D model schematizations. A new MSV topographic data environment was explored for the city of Delft and compared with the conventional top-view LiDAR approach. Based on the experience gained, the effects of different topographic descriptions were explored for 2D urban flood models of (i) Kuala Lumpur, Malaysia for the 2003 flood event; and (ii) Ayutthaya, Thailand for the 2011 flood event. It was observed that adopting the new MSV data as the basis for describing the urban topography, the numerical simulations provide a more realistic representation of complex urban flood dynamics, thus enhancing conventional approaches and revealing specific features like flood watermarks identification and helping to develop improved flood-protection measures.

Experimental Hydraulics: Methods, Instrumentation, Data Processing and Management - Volume I: Fundamentals and Methods... Experimental Hydraulics: Methods, Instrumentation, Data Processing and Management - Volume I: Fundamentals and Methods (Hardcover)
Dennis A. Lyn, Robert Ettema, Vladimir Nikora, Marcelo H. Garcia, Marian Muste, …
R5,102 Discovery Miles 51 020 Ships in 10 - 15 working days

This is the first volume of a two-volume guide to designing, conducting and interpreting laboratory and field experiments in a broad range of topics associated with hydraulic engineering. Specific guidance is provided on methods and instruments currently used in experimental hydraulics, with emphasis on new and emerging measurement technologies and methods of analysis. Additionally, this book offers a concise outline of essential background theory, underscoring the intrinsic connection between theory and experiments. This book is much needed, as experimental hydraulicians have had to refer to guidance scattered in scientific papers or specialized monographs on essential aspects of laboratory and fieldwork practice. The book is the result of the first substantial effort in the community of hydraulic engineering to describe in one place all the components of experimental hydraulics. Included is the work of a team of more than 45 professional experimentalists, who explore innovative approaches to the vast array of experiments of differing complexity encountered by today's hydraulic engineer, from laboratory to field, from simple but well-conceived to complex and well-instrumented. The style of this book is intentionally succinct, making frequent use of convenient summaries, tables and examples to present information. All researchers, practitioners, and students conducting or evaluating experiments in hydraulics will find this book useful.

Introduction to Tsallis Entropy Theory in Water Engineering (Paperback): Vijay P. Singh Introduction to Tsallis Entropy Theory in Water Engineering (Paperback)
Vijay P. Singh
R2,597 Discovery Miles 25 970 Ships in 10 - 15 working days

Focuses On an Emerging Field in Water Engineering A broad treatment of the Tsallis entropy theory presented from a water resources engineering point of view, Introduction to Tsallis Entropy Theory in Water Engineering fills a growing need for material on this theory and its relevant applications in the area of water engineering. This self-contained text includes several solved examples, and requires only a basic knowledge of mathematics and probability theory. Divided into four parts, the book begins with a detailed discussion of Tsallis entropy, moves on to hydraulics, expounds on the subject of hydrology, and ends with broad coverage on a wide variety of areas in water engineering. The author addresses: The Tsallis entropy theory for both discrete and continuous variables The procedure for deriving probability distributions One-dimensional velocity distributions Two-dimensional velocity distributions Methods for determining sediment concentration Sediment discharge Stage-discharge rating curve Precipitation variability Infiltration and the derivation of infiltration equations An introduction to soil moisture, soil moisture profiles, and their estimation Flow duration curves The eco-index and indicators of hydrologic alteration (IHA) Measures of redundancy for water distribution networks, and more Introduction to Tsallis Entropy Theory in Water Engineering examines the basic concepts of the Tsallis entropy theory, and considers its current applications and potential for future use. This book advances further research on water engineering, hydrologic sciences, environmental sciences, and water resources engineering as they relate to the Tsallis entropy theory.

Harmful Algae Blooms in Drinking Water - Removal of Cyanobacterial Cells and Toxins (Paperback): Harold W. Walker Harmful Algae Blooms in Drinking Water - Removal of Cyanobacterial Cells and Toxins (Paperback)
Harold W. Walker
R2,080 Discovery Miles 20 800 Ships in 10 - 15 working days

Harmful algal blooms (HABs) occurring in freshwater, and the associated toxins they produce, are dangerous to animals and humans. Mitigating the increasing presence of HABs presents a major challenge to water managers and drinking water utilities across the world. This book explores the current research on removal of HABs and toxins from drinking water. It provides the necessary tools so that treatment plant operators, engineers, and water managers can understand the vulnerability of drinking water treatment plants to HABs and develop treatment processes to minimize the impact of these contaminants. Although conventional treatment processes can be effective for the removal of HAB cells and some HAB toxins under optimal conditions, the potential exists for significant breakthrough of toxins during normal operation. As a result, there is a recognized need for more advanced techniques. Possible advanced processes for removing HAB toxins include granular activated carbon (GAC), powdered activated carbon (PAC), or oxidative processes. This book reviews both conventional and advanced treatment processes and presents clear and easy-to-understand procedures for the design of systems for optimal cell or toxin removal.

The Nile Hydroclimatology: Impact of the Sudd Wetland (Hardcover): Yasis Abbas Mohamed The Nile Hydroclimatology: Impact of the Sudd Wetland (Hardcover)
Yasis Abbas Mohamed
R4,064 Discovery Miles 40 640 Ships in 10 - 15 working days

Hydroclimatology has emerged as a new discipline in line with increasing awareness of the connected nature of land-surface-atmosphere processes. Changes in landuse affect the atmospheric moisture conditions, not only locally but also at a continental scale. Similarly, climate change influences river basin hydrology and water resources. A good understanding of the atmospheric contribution to the regional water cycle is important for sound (integrated) water resources planning and management at river basin scale. The Nile Basin is characterized by increasing water demands in the downstream areas and high evaporation from the Upper Nile swamps. This has led to the planning and construction of river short-cut channels to intercept the water feeding the wetlands. Despite the importance of the wetlands to the local environment, and, it is thought, as a supplier of additional Nile water, its exact hydrology and its interaction with the climate is largely unknown. This study aims

Handbook of Drought and Water Scarcity - Principles of Drought and Water Scarcity (Hardcover): Saeid Eslamian, Faezeh A.... Handbook of Drought and Water Scarcity - Principles of Drought and Water Scarcity (Hardcover)
Saeid Eslamian, Faezeh A. Eslamian
R5,693 Discovery Miles 56 930 Ships in 10 - 15 working days

This volume include over 30 chapters, written by experts from around the world. It examines drought and all of the fundamental principles relating to drought and water scarcity. It includes coverage of the causes of drought, occurences, preparations, drought vulnerability assessments, societal implications, and more.

Handbook of Sustainability Science and Research (Hardcover, 1st ed. 2018): Walter Leal Filho Handbook of Sustainability Science and Research (Hardcover, 1st ed. 2018)
Walter Leal Filho
R10,656 Discovery Miles 106 560 Ships in 18 - 22 working days

This multidisciplinary handbook explores concrete case studies which illustrate how sustainability science and research can contribute to the realization of the goals of the 2030 Agenda for Sustainable Development. It contains contributions from sustainability researchers from across the world.

Water Bankruptcy in the Land of Plenty (Hardcover): Franck Poupeau, Hoshin Gupta, Aleix Serrat Capdevila, Maria Sans-Fuentes,... Water Bankruptcy in the Land of Plenty (Hardcover)
Franck Poupeau, Hoshin Gupta, Aleix Serrat Capdevila, Maria Sans-Fuentes, Susan Harris, …
R5,758 Discovery Miles 57 580 Ships in 10 - 15 working days

As the American Southwest faces its deepest drought in history, this book explores the provocative notion ofwater bankruptcy with a view towards emphasizing the diversity and complexity of water issues in this region. It bridges between the narratives of growth and the strategies or policies adopted to pursue competing agendas and circumvent the inevitable. A window of opportunity provided by this current long-term drought may be used to induce change by dealing with threats that derive from imbalances between growth patterns and available resources, the primary cause of scarcity. A first of its kind, this book was developed through close collaboration of a broad range of natural scientists, social scientists, and resource managers from Europe and United States. It constitutes a collective elaboration of a transdisciplinary approach to unveiling the inner workings of how water was fought for, allocated and used in the American Southwest, with a focus on Arizona. Specifically, it offers an innovative scientific perspective that produces a critical diagnostic evaluation of water management, with a particular view to identifying risks for the Tucson region that is facing continuous urban sprawl and economic growth. The book offers a diversity of complementary perspectives, including a statement of natural resources, biodiversity and their management, an analysis of water policy and its history, and a statement of ecosystem services in the context of both local biodiversity and also the economic activities that sustain economic growth. Finally, it presents a concerted effort to explore the interplay between a variety of related scientific disciplines and frameworks including climatology, hydrology, water management, ecosystem services, societal metabolism, political economy and social science.

Recursive Streamflow Forecasting - A State Space Approach (Hardcover): Jozsef Szilagyi, Andras Szollosi-Nagy Recursive Streamflow Forecasting - A State Space Approach (Hardcover)
Jozsef Szilagyi, Andras Szollosi-Nagy
R5,764 Discovery Miles 57 640 Ships in 10 - 15 working days

This textbook is a practical guide to real-time streamflow forecasting that provides a rigorous description of a coupled stochastic and physically based flow routing method and its practical applications. This method is used in current times of record-breaking floods to forecast flood levels by various hydrological forecasting services. By knowing in advance when, where, and at what level a river will crest, appropriate protection works can be organized, reducing casualties and property damage. Through its real-life case examples and problem listings, the book teaches hydrology and civil engineering students and water-resources practitioners the physical forecasting model and allows them to apply it directly in real-life problems of streamflow simulation and forecasting. Designed as a textbook for courses on hydroinformatics and water management, it includes exercises and a CD-ROM with MATLAB codes for the simulation of streamflows and the creation of real-time hydrological forecasts.

Fingerponds: Seasonal Integrated Aquaculture in East African Freshwater Wetlands: Exploring their potential for wise use... Fingerponds: Seasonal Integrated Aquaculture in East African Freshwater Wetlands: Exploring their potential for wise use strategies - PhD: UNESCO-IHE Institute, Delft (Hardcover)
Julius Kipkemboi
R4,065 Discovery Miles 40 650 Ships in 10 - 15 working days

Wetlands play an important role in the livelihoods of many rural households particularly in sub-Saharan Africa. However, due to decline in rainfed terrestrial agriculture, many wetlands are being encroached upon to grow crops. The question to any wetland scientist/policy maker in the region is: what efforts can be made to achieve a balance between human needs for food and income and maintenance of ecosystem integrity?. This study analyses the potential of smallholder integrated aquaculture farming systems (calledFingerponds ) around the Lake Victoria wetlands in Kenya. Various analytical tools were used to evaluate the biophysical suitability, nutrient flows, benefits and environmental implications of this innovative technology. The critical biophysical factors determining Fingerponds productivity are site selection and water supply. The analysis of nutrient flows in the entire agroecosystem using nitrogen as the currency indicated that the total system throughput, and hence the overall productivity of the system were low. Fingerponds contributed to household livelihoods by providing protein and income and added diversity to the household activities with minimal impacts on the natural environment. With careful implementation and adaptive management, Fingerponds can be incorporated into national wetland policies and enhance the balance between economic development and environmental conservation.

Users Guide to Ecohydraulic Modelling and Experimentation - Experience of the Ecohydraulic Research Team (PISCES) of the... Users Guide to Ecohydraulic Modelling and Experimentation - Experience of the Ecohydraulic Research Team (PISCES) of the HYDRALAB Network (Hardcover)
L.E. Frostick, RE Thomas, M.F. Johnson, S. Price, S. J. McLelland
R5,767 Discovery Miles 57 670 Ships in 10 - 15 working days

Users Guide to Ecohydraulic Modelling and Experimentation has been compiled by the interdisciplinary team of expert ecologists, geomorphologists, sedimentologists, hydraulicists and engineers involved in HYDRALAB IV, the European Integrated Infrastructure Initiative on hydraulic experimentation which forms part of the European Community's Seventh Framework Programme. It is designed to give an overview of our current knowledge of organism-environment interactions in marine and freshwater aquatic systems and to provide guidance to those wishing to use hydraulic experimental facilities to explore ecohydraulic processes. By highlighting the current state of our knowledge, this design manual will act as a guide to the use of living organisms in physical models and experiments and help scientists and engineers understand limitations on the use of surrogates. It incorporates chapters on the general decisions that need to be taken when designing an ecohydraulic experiment as well as specific chapters on the main aquatic and marine organisms likely to be of interest. Each of the chapters reviews current knowledge in a defined area of ecohydraulic experimental research. It excludes consideration of fish and mammals and does not deal with plankton, as it focuses on the sediment-water interface and the influences of biota in this complex area. Its primary purpose is to disseminate the extensive knowledge and experience of the team of ecohydraulic experimentalists involved in HYDRALAB IV as part of the PISCES research project as well as some of the important advances being made in this fast developing field of research.

The Atlas of Endangered Species (Hardcover, 3rd edition): Richard Mackay The Atlas of Endangered Species (Hardcover, 3rd edition)
Richard Mackay
R5,754 Discovery Miles 57 540 Ships in 10 - 15 working days

Up to 20 percent of species may be extinct by 2030. Vividly presented through full-colour maps and graphics, this fully revised and updated atlas profiles species lost, threatened and surviving today. It examines different ecosystems, the major threats to their inhabitants and steps being taken towards conservation. Fully revised and updated, containing new maps covering environmental impacts of human development including climate change and damage caused by deep-sea trawling and mining Updated maps and data on birds, reptiles, amphibians, invertebrates and fish and of the increasing area of wetlands covered by the Ramsar Convention The latest information on endangered mammal species such as the panda, the Arabian oryx and the bonobo

Short-cutting the Phosphorus Cycle in Urban Ecosystems (Hardcover): Bekithemba Gumbo Short-cutting the Phosphorus Cycle in Urban Ecosystems (Hardcover)
Bekithemba Gumbo
R4,064 Discovery Miles 40 640 Ships in 10 - 15 working days

This dissertation presents a methodology of short-cutting the phosphorus cycle in urban ecosystems. In nature, the P-cycle is a circular, closed-loop system, but human activities use and dispose P in a linear, open-ended system leading to the customary environmental problems. Lake Chivero in Zimbabwe is used as a case study to illustrate the unsustainable practice of discharging valuable and finite phosphorous into drinking water resources. Short-cutting or closing the P-cycle in the urban environment is closely related to the closure of water cycles. Closing the P-cycle is dependent on the adoption of ecological sanitation and eco-city concepts. These concepts lead to solutions, which are source orientated (local and small scale), non-mixing, ecologically sound, closed-loop systems. Recycling of P in urban ecological agriculture (without synthetic fertilisers) is used in this dissertation to test the feasibility of these concepts.

The Global Arsenic Problem - Challenges for Safe Water Production (Paperback): Nalan Kabay, Jochen Bundschuh, Bruce Hendry,... The Global Arsenic Problem - Challenges for Safe Water Production (Paperback)
Nalan Kabay, Jochen Bundschuh, Bruce Hendry, Marek Bryjak, Kazuharu Yoshizuka, …
R2,403 Discovery Miles 24 030 Ships in 10 - 15 working days

A prevalent and increasingly important issue, arsenic removal continues to be one of the most important areas of water treatment. Conventional treatment plants may employ several methods for removing arsenic from water. Commonly used processes include oxidation, sedimentation, coagulation and filtration, lime treatment, adsorption onto sorptive media, ion exchange, and membrane filtration. However, in the most affected regions, large conventional treatment plants may not be appropriate and factors such as cost and acceptability as well as performance must be considered. This book, published in cooperation with leading experts in this field, provides a thorough analysis of the problems, solutions, and possible alternatives to achieve safe water production on a global scale.

Understanding Hydrological Processes in an Ungauged Catchment in sub-Saharan Africa - UNESCO-IHE PhD Thesis (Hardcover):... Understanding Hydrological Processes in an Ungauged Catchment in sub-Saharan Africa - UNESCO-IHE PhD Thesis (Hardcover)
Marloes Mul
R4,065 Discovery Miles 40 650 Ships in 10 - 15 working days

Ungauged catchments can be found in many parts of the world, but particularly in sub-Saharan Africa. Information collected in a gauged catchment and its regionalisation to ungauged areas is crucial for water resources assessment. Especially farmers in semi-arid zones are in need of such information. Inter and Intra-seasonal rainfall variability is large in these areas, and farmers depend more and more on additional surface and groundwater resources for their crop production. As a result, understanding the key-hydrological processes, and determination of the frequencies and magnitudes of stream flows, is very important for local food production. This is particularly true for the ungauged Makanya catchment in Tanzania, which is the subject of this study.

Groundwater Response to Changing Climate (Paperback): Makoto Taniguchi, Ian P. Holman Groundwater Response to Changing Climate (Paperback)
Makoto Taniguchi, Ian P. Holman
R2,569 Discovery Miles 25 690 Ships in 10 - 15 working days

Groundwater systems are vital to both society and the environment, supporting food production and many other ecosystem services. Sustainable management of this vital resource for future generations requires a sound understanding of how groundwater might respond to the inevitable changes in future climate. In this volume, recent developments within the interlinked areas of the response of groundwater systems to climate variability and climate change are highlighted, using contemporary field investigations and monitoring of aquifers, numerical simulations of aquifer response to climate change predictions and paleohydrogeological studies of ancient groundwater systems. The book provides an up-to-date description of the relationship between groundwater behaviour and ancient, historical, current and future climates for a range of diverse aquifer systems around the world.

Hydro-Environmental Analysis - Freshwater Environments (Paperback): James L. Martin Hydro-Environmental Analysis - Freshwater Environments (Paperback)
James L. Martin
R2,697 Discovery Miles 26 970 Ships in 10 - 15 working days

Focusing on fundamental principles, Hydro-Environmental Analysis: Freshwater Environments presents in-depth information about freshwater environments and how they are influenced by regulation. It provides a holistic approach, exploring the factors that impact water quality and quantity, and the regulations, policy and management methods that are necessary to maintain this vital resource. It offers a historical viewpoint as well as an overview and foundation of the physical, chemical, and biological characteristics affecting the management of freshwater environments. The book concentrates on broad and general concepts, providing an interdisciplinary foundation. The author covers the methods of measurement and classification; chemical, physical, and biological characteristics; indicators of ecological health; and management and restoration. He also considers common indicators of environmental health; characteristics and operations of regulatory control structures; applicable laws and regulations; and restoration methods. The text delves into rivers and streams in the first half and lakes and reservoirs in the second half. Each section centers on the characteristics of those systems and methods of classification, and then moves on to discuss the physical, chemical, and biological characteristics of each. In the section on lakes and reservoirs, it examines the characteristics and operations of regulatory structures, and presents the methods commonly used to assess the environmental health or integrity of these water bodies. It also introduces considerations for restoration, and presents two unique aquatic environments: wetlands and reservoir tailwaters. Written from an engineering perspective, the book is an ideal introduction to the aquatic and limnological sciences for students of environmental science, as well as students of environmental engineering. It also serves as a reference for engineers and scientists involved in the management, regulation, or restoration of freshwater environments.

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