Water and wastewater treatment normally take place in a series of continuous flow units, each designed to perform a step of the intended purification process - typically involving coagulation or flocculation, sedimentation or filtration, and disinfection. The flow pattern governs the residence/contact time, turbulence levels, collisions and shear to which different fluid portions are subjected in their passage through the unit. The efficiency of a given unit depends as much on the relevant physical, chemical or biological reaction as on the flow pattern taking place inside. This combined effect of flow features on process efficiency is often overlooked in teaching the design of water and wastewater treatment units, and so it is not uncommon to find treatment units in operating in a cost-ineffective way, causing health and environmental problems. This book introduces engineering students to concepts and practical measures associated with the rational design of treatment units, leading to more realistic and potentially optimal solutions for new units as well as for retrofitting existing units. Key basic concepts and suitable analytical tools are described, illustrated and worked through using practical examples. Engineering undergraduates and graduates should benefit from the book while undertaking standalone modules on the topic and/or supplementary classes of existing courses on unit treatment processes. The book may also be useful for technical and engineering staff involved in designing and/or retrofitting units for better cost-effectiveness and footprint reduction of the water and wastewater treatment sector.

This book focuses on industrial wastes that either join the streams or other natural water bodies directly, or are emptied into the municipal sewers, and their characteristics vary widely depending on the source of production and the raw material used by the industry, even during pre-industrial, industrial period and prospect of wastewater treatment for water resource conservation. The treatment of industrial wastewater can be done in part or as a whole either by the biological or chemical processes. Advanced treatment methods like membrane separation, ultra-filtration techniques and adsorption are elaborated. It would emphasize and facilitate a greater understanding of all existing available research, i.e., theoretical, methodological, well-established and validated empirical work, associated with the environment and climate change aspects.

The issue of water quality monitoring is becoming a huge area as the EU requirements for cleaner water increase. On-line monitoring involves measuring a body of water constantly and in-situ as opposed to analysing samples in the lab. Currently filling the gap in the market, "Wastewater Quality Monitoring: On-line Methods" provides information on how to produce the best analyses of wastewater in order to meet the above mentioned requirements.

This reference will prove invaluable to all local water companies, industrial companies producing wastewater, as well as environment agencies and researchers.

This comprehensive volume describes how ecosystem services-based approaches can assist in addressing major global and regional water challenges, such as climate change, biodiversity loss, and water security in the developing world, by integrating scientific knowledge from different disciplines, such as hydrological modelling, environmental economics, psychology and international law. Empirical assessments at the national, catchment and regional levels are used to critically appraise this systemic approach, and the merits and potential limitations are presented. The practicalities of this approach with regard to water resources management, nature conservation, and sustainable business practices are discussed, and the role of society in underpinning the concept of ecosystem services is explored. Presenting new insights and perspectives on how to shape future strategies, this contributory volume is a valuable reference for researchers, academics, students and policy makers, in environmental studies, hydrology, water resource management, ecology, environmental law, policy and economics, and conservation biology.

This book presents both general and comprehensive observations of unsuccessful and successful experiences in water pollution trading programs within the U.S. These experiences help in understanding the major environmental, economic and regulatory barriers that prevent the application of pollution trading in water media to become successful. This work combines background information with real experience.

Effective participatory water management requires effective co-engineering - the collective process whereby organisational decisions are made on how to bring stakeholders together. This trans-disciplinary book highlights the challenges involved in the collective initiation, design, implementation and evaluation of water planning and management processes. It demonstrates how successful management requires the effective handling of two participatory processes: the stakeholder water management process and the co-engineering process required to organise this. The book provides practical methods for supporting improved participatory processes, including the application of theory and models to aid decision-making. International case studies of these applications from Australia, Europe and all over the world, including Africa, are used to examine negotiations and leadership approaches, and their effects on the participatory stakeholder processes. This international review of participatory water governance forms an important resource for academic researchers in hydrology, environmental management and water policy, and also practitioners and policy-makers working in water management.

Desalination Project Cost Estimating and Management examines the key issues associated with the estimation of costs for desalination plants. It covers all aspects of desalination project cost estimating and management: direct and indirect capital costs, fixed and variable operation and maintenance costs, and total costs for water production. In addition, it provides a detailed overview of the factors that influence project costs and discusses the technological and project delivery methods to control and optimize project costs. The book includes cost curves for the most commonly used seawater desalination facilities and numeric examples illustrating how to prepare a budgetary cost estimate for a typical desalination project. Features: *Presents a comprehensive engineering overview of key issues associated with desalination project cost estimating. *Includes cost curves which can be used for budgetary level estimates of capital, and operation and maintenance (O&M) expenditures. *Contains easy to use cost-estimating rules of thumb derived from actual desalination projects. *Includes several numeric examples illustrating the cost estimating process.

This is a history of the hydropolitics of the Nile Valley from 1900 to 1988. Attempts to develop the Nile and control its waters are of vital significance to the future of the inhabitants of Egypt, the Sudan, Ethiopia, and East Africa. Acute drought and heavy flooding in the Nile Basin have brought disaster in the past, and the history of the area is the story of human effort to control the precious waters of the river. Written by a distinguished authority in the field, this highly interdisciplinary study will appeal to those interested in the environment, politics, third world development, anthropology, zoology, and economic history.

Traditional approaches to hydrology have favoured a reductionist perspective. This text argues that hydrologists of the 21st century must increasingly look beyond the traditional boundaries of river channel or river catchment areas to consider new questions: firstly, how water resources should be managed in an integrated and sustainable way with a growing appreciation of the global dimension to water resource problems; secondly, how the search for solutions to water pollution, flooding, drought and environmental degradation requires a broader understanding of transboundary connections between components of the hydrosphere across a range of spatial and temporal scales. In an emerging age of water shortage, increasing dependence will also be placed upon existing monitoring and water distribution networks. Advances in data gathering systems and hydrological modelling have created new opportunities for assessing and managing these water resources. Similarly ecohydrology and palaeohydrological techniques are generating new types of data for model development and testing. This text will provide an excellent overview for post-graduates and researchers studying hydrology, meterology, environmental science and related topics. It will also be useful as supplementary reading for 2nd/3rd year undergraduates in these areas. The ruins of the flooded Derwent village emerged from Ladybower Reservoir, Derbyshire UK in autumn 1995. This image highlights a number of issues pertinent to contemporary hydrology such as: winter droughts severely restrict the replenishment on upland communities; the uneasy relationship between forestry and water resources in water supply catchments; water quality problemsassociated with acidification, turbidity and sedimentation; the aesthetic and ammenity value of impounded waters

As the American Southwest faces its deepest drought in history, this book explores the provocative notion of "water 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.

This book provides a comprehensive assessment of how local corporate water strategies influence global water governance objectives. In various geographies, companies spearhead a quest for more sustainable water management within and beyond their own operations. This book critically examines such strategies and provides an overarching analysis of the effects that mounting corporate involvement has had on the global water discourse. More specifically, it explains why companies from the food, beverage, textile, and mining sectors have started to incorporate water management objectives into their business strategies, how companies work in partnerships with other stakeholders to realize these objectives, and how these actions acquire wider political legitimacy. It presents insightful interview material from business leaders and other high-level stakeholders. Readers will gain the necessary knowledge to develop a critical view and respond appropriately.

This research is dedicated to studying longterm estuarine morphodynamic behavior under combined river and tidal forcing. Analysis of river tides in the Yangtze River estuary (YRE) in China, schematized morphodynamic modeling in 1D and 2D mode and morphodynamic modeling of the YRE based on a process-based numerical model (Delft3D) are conducted. Morphodynamic sensitivities to river discharge magnitude and time variations, tidal strength and tidal constituents are then systematically explored. Analysis of river tides in the YRE reveals strong river-tide interactions and non-linear modulation of tides by river discharge. River discharge alters tidal asymmetries and resultant tidal residual sediment transport. Analysis of morphodynamic modeling results exposes significant mechanisms inducing tidal residual sediment transport and controlling long-term morphodynamic development. Morphodynamic equilibria in 1D and 2D simulations can be defined by vanishing gradients of tidal residual sediment transports and meeting empirical morphodynamic relationships. This research indicates the value of numerical modeling in examining long-term morphodynamic development in millennia time scale. Understanding of the controls on morphodynamic behavior in estuaries under river and tidal forcing is to the benefit of managing estuaries' functions in a long-term point of view.

This book addresses the prediction of the Water Quality Index (WQI) at Perak River, State of Perak, Malaysia, using a fuzzy multiple linear regression model to tackle the uncertainty in the measurements of six key parameters - dissolved oxygen (DO), biological oxygen demand (BOD), chemical oxygen demand (COD), suspended solids (SS), pH value (pH) and ammoniacal nitrogen (NH3-NL). Given its scope, the book is suitable for graduate students, researchers and water quality scientists.

Slow sand filtration is credited with being the first drinking water treatment process utilised to improve the quality of water in both modern Europe and the USA. Within the last 10 years, there has been a renaissance of interest in the potential use of enhanced processes of slow sand filtration throughout the world, especially for small and rural communities, and it continues to be the primary treatment process for many major European cities. The book deals with the latest research developments in slow sand and alternative biological filtration processes for drinking water treatment, including advances in the understanding of the fundamental mechanisms of the processes. In addition, progress in the techniques of operation and upgrading of the processes are described, with case studies from around the world. The principal themes of the book are: General overview; Removal of Natural Organic Matter (NOM), Biodegradable Organic Carbon (BOC) and Ozonation by-products; Biofilter media characteristics; Influence of process design variables and modifications; Modelling process performance; Pre-treatment applications; Operational experience and cleaning; and Upgrading treatment processes. The book also has an international perspective with case-studies from around the world.

This book addresses groundwater governance, a subject internationally recognized as crucial and topical for enhancing and safeguarding the benefits of groundwater and groundwater-dependent ecosystems to humanity, while ensuring water and food security under global change. The multiple and complex dimensions of groundwater governance are captured in 28 chapters, written by a team of leading experts from different parts of the world and with a variety of relevant professional backgrounds. The book aims to describe the state-of-the-art and latest developments regarding each of the themes addressed, paying attention to the wide variation of conditions observed around the globe. The book consists of four parts. The first part sets the stage by defining groundwater governance, exploring its emergence and evolution, framing it through a socio-ecological lens and describing groundwater policy and planning approaches. The second part discusses selected key aspects of groundwater governance. The third part zooms in on the increasingly important linkages between groundwater and other resources or sectors, and between local groundwater systems and phenomena or actions at the international or even global level. The fourth part, finally, presents a number of interesting case studies that illustrate contemporary practice in groundwater governance. In one volume, this highly accessible text not only familiarizes water professionals, decision-makers and local stakeholders with groundwater governance, but also provides them with ideas and inspiration for improving groundwater governance in their own environment.

Florida's Water poses fundamental questions about water sustainability in the United States' fourth largest state. Florida has long-standing water quality problems. Global climate change threatens to intensify Florida's floods and droughts, make hurricanes more common or more damaging, and eventually submerge much of low-lying Florida, including the Everglades. How can Florida meet these extraordinary challenges? And what lessons does the Florida experience hold for other states? This book fully integrates the many diverse responsibilities of water management into a readable and compelling combination of interesting narratives and deep analysis. Author Tom Swihart's unique, intimate knowledge of Florida's successes and failures in water management brings out both the novelty of Florida's water situation and the features that it has in common with other states.

Customer Experience Management for Water Utilities presents a practical framework for water utilities to become more focussed on their customers. This framework is founded on Service-Dominant Logic, a contemporary theory of marketing that explains value creation as a process of co-creation between the customer and the service provider. Standard models for marketing do not apply to monopolistic water utilities without modification. The first two chapters develop a marketing mix tailored to water utilities to assist them with providing customer-centric services. The water utility marketing mix includes the value proposition, internal marketing, service quality and customer relationships. he book discusses the four dimensions of the marketing mix. Chapter three presents a template for developing value propositions to assist water utilities in positioning their service. This model is based on the needs and wants of individual customer segments and the type of service. Chapter four discusses internal marketing, activities designed to improve the way utilities add value for customers. This chapter also analyses potential tensions between engineering and science-oriented employees and proposes methods to resolve these tensions. The final chapters describe customer relationships from both a theoretical and practical perspective. The customer experience is a complex phenomenon that is difficult to quantify. The book provides a method to measure the experience of the customer, based on service quality theory and psychometric statistics. Customer Experience Management for Water Utilities is one of the first books that discusses urban water supply from a marketing perspective. This perspective provides a unique insight into an industry which is often dominated by technological concerns. This book is a valuable resource for Water Utility Managers and Regulators, as well as for Marketing Consultants seeking to assist water utilities to become more customer focussed.

downstream: reimagining water brings together artists, writers, scientists, scholars, environmentalists, and activists who understand that our shared human need for clean water is crucial to building peace and good relationships with one another and the planet. This book explores the key roles that culture, arts, and the humanities play in supporting healthy water-based ecology and provides local, global, and Indigenous perspectives on water that help to guide our societies in a time of global warming. The contributions range from practical to visionary, and each of the four sections closes with a poem to encourage personal freedom along with collective care. This book contributes to the formation of an intergenerational, culturally inclusive, participatory water ethic. Such an ethic arises from intellectual courage, spiritual responsibilities, practical knowledge, and deep appreciation for human dependence on water for a meaningful quality of life. Downstream illuminates how water teaches us interdependence with other humans and living creatures, both near and far.

Since the 1980s a major change took place in public policies for water resources management. The role of governments shifted under this reform process from an emphasis on investment in the development, operation and maintenance of water infrastructure to a focus on managing water resources systems by stipulating general frameworks and defining key principles for water allocation. This interdisciplinary research examines how this water reform process unfolds within four African waterscapes that are historically constituted by natural and social processes. The study analyzes the interplay between public policies designed and implemented by government agencies and the institutions that govern access to and control over water resources among groups of agricultural water users. The findings of this research show that the water reform policies have led to similar outcomes in dissimilar contexts and that water policy only to a limited extent leads to progressive institutional change concerning agricultural water use, especially in this neoliberal era. Moreover, this research shows that excluding targeted investments in the development of hydraulic infrastructure for historically disadvantaged groups has narrowed the options of the governments to redress the colonial legacy and the capacity of small-scale farmers to move their livelihood beyond subsistence.

The Inter-American Development Bank (IDB), in cooperation with the International Water Association (IWA), has developed a rating system that assesses the performance of water and sanitation service providers in a comprehensive way. AquaRating: Un estandar internacional para evaluar los servicios de agua y saneamiento aims to provide an industry standard for utilities. The innovative rating system seeks the improvement of the service delivered by means of a rigorous and systematic assessment. AquaRating comprises more than 100 assessment elements organized in eight rating areas: Service Quality, Efficiency in the Planning and Execution of Investments, Operating Efficiency, Business Management Efficiency, Financial Sustainability, Access to Service, Corporate Governance, Environmental Sustainability. Each of the assessment elements and consecutively rating areas is assigned a rating (from 0 to 100), which in turn are aggregated into a single rating for the utility. Assessment elements consist of qualitative good practices and quantitative indicators. The total compliance with practices and achievement of the most demanding indicators levels means delivery of an excellent service and, therefore, awards a maximum rating of 100 points. AquaRating takes into account the quality of the information supporting the ratings results by correcting the rating for the reliability level of such information. The rating results are certifiable thanks to an independent audit of the supporting information. The expected benefits of the system are manifold: * Utilities - Identify areas of improvement, receive guidance and monitor progress over time. - Obtain an external and credible performance rating, which contributes to foster reputation, accountability and acceptance by key stakeholders, gain access to new markets and finance, and attract qualified staff. - Get access to a knowledge and assessment framework that fosters continuous learning. * Governments, regulators and development agencies - Use the system to stimulate utilities to maintain or improve their performance and to target technical assistance and finance according to the specific opportunities for improvement identified. * Consumers - Obtain better services in terms of access, quality, efficiency, sustainability and transparency.

After World War II, international development became the world leading development model, but its effectiveness is much debated. Nowadays, it is acknowledged that international development can effectively support development through knowledge and capacity development (KCD). Nonetheless, understanding what capacity really consists of in operational terms and what its development entails remains a challenge. This book investigates KCD processes in water utilities in Sub-Saharan Africa. The three cases analysed reveal that the learning impact of KCD on utilities depends on whether they are able to close their learning cycle, i.e., to ensure that improved capacity is also translated into mainstream behaviour. This finding challenges conventional wisdom for which KCD translates "automatically" into improved performance. Hence the need to focus KCD evaluation on both capacity improvement and capacity application. The proposed learning-based framework for KCD identifies two distinct but interrelated stages in KCD, namely knowledge transfer and knowledge absorption. Knowledge absorption usually takes time due to slow organisational processes that govern it. However, in practice it is often taken for granted. The framework also identifies the key factors that shape learning processes in water utilities. The book argues that water utilities in Sub-Saharan Africa can reinvent themselves by embracing change management approaches and striving to become learning organisations.

Soil and Water Contamination, Second Edition gives a structured overview of transport and fate processes of environmental contaminants. Dealing with all topics essential for understanding and predicting contaminant patterns in soil, groundwater and surface water, it contributes to the formation of a solid basis for adequate soil and water pollution control and integrated catchment management. A unique feature of this work is that it does not treat water and soil pollution as independent processes, but as components of an integrated whole. The core of this geoscientific approach is divided into four parts: * Introduction to the basics of soil and water contamination, such as the fundamentals of environmental pollution and chemistry and the basic properties of soil, groundwater and surface water. * Source, role, and behaviour of substances in soil and water, treating natural and anthropogenic sources of nutrients, heavy metals, radionuclides and organic pollutants as well as emerging substances of concern, their physico-chemical characteristics, behaviour, and toxicity. * Transport and fate of substances in soil and water, focusing on processes of transport, exchange and transformations like advection, dispersion, adsorption kinetics and biochemical decay. Special attention is paid to the mathematical description and modelling of these processes. * Patterns of substances in soil and water, explaining spatial and temporal patterns of pollutants in soil, groundwater, and surface water, illustrated by recent case studies from fundamental and applied research. This comprehensive, successful textbook, now in its second edition, has been conscientiously updated and extended and includes many case studies, examples and exercises sections, providing undergraduate and graduate students in the Earth and Environmental Sciences with all the material necessary for the study of soil and water contamination. In addition, it can serve as a useful source of information for professionals.

This publication evaluates water security in Mongolia and provides analyses based from other documents and studies for a multidimensional overview of the country's water resources system and management. It recommends a path forward based on integrated water resources management as well as national and local institutional development, through a targeted investment program. The assessment is adapted from the analytical framework introduced in the Asian Water Development Outlook, a series of reports produced by the Asian Development Bank and the Asia-Pacific Water Forum.

When Henry David Thoreau went for his daily walk, he would consult his instincts on which direction to follow. More often than not his inner compass pointed west or southwest. "The future lies that way to me," he explained, "and the earth seems more unexhausted and richer on that side." In his own imaginative way, Thoreau was imitating the countless young pioneers, prospectors, and entrepreneurs who were zealously following Horace Greeley's famous advice to "go west." Yet while the epic chapter in American history opened by these adventurous men and women is filled with stories of frontier hardship, we rarely think of one of their greatest problems--the lack of water resources. And the same difficulty that made life so troublesome for early settlers remains one of the most pressing concerns in the western states of the late-twentieth century.
The American West, blessed with an abundance of earth and sky but cursed with a scarcity of life's most fundamental need, has long dreamed of harnessing all its rivers to produce unlimited wealth and power. In Rivers of Empire, award-winning historian Donald Worster tells the story of this dream and its outcome. He shows how, beginning in the mid-nineteenth century, Mormons were the first attempting to make that dream a reality, damming and diverting rivers to irrigate their land. He follows this intriguing history through the 1930s, when the federal government built hundreds of dams on every major western river, thereby laying the foundation for the cities and farms, money and power of today's West. Yet while these cities have become paradigms of modern American urban centers, and the farms successful high-tech enterprises, Worster reminds usthat the costs have been extremely high. Along with the wealth has come massive ecological damage, a redistribution of power to bureaucratic and economic elites, and a class conflict still on the upswing. As a result, the future of this "hydraulic West" is increasingly uncertain, as water continues to be a scarce resource, inadequate to the demand, and declining in quality.
Rivers of Empire represents a radically new vision of the American West and its historical significance. Showing how ecological change is inextricably intertwined with social evolution, and reevaluating the old mythic and celebratory approach to the development of the West, Worster offers the most probing, critical analysis of the region to date. He shows how the vast region encompassing our western states, while founded essentially as colonies, have since become the true seat of the American "Empire." How this imperial West rose out of desert, how it altered the course of nature there, and what it has meant for Thoreau's (and our own) mythic search for freedom and the American Dream, are the central themes of this eloquent and thought-provoking story--a story that begins and ends with water.