Wastewater disposal by marine outfalls is proven and effective and is a reliable and cost effective solution with minimal environmental impacts. The design and siting of submarine outfalls is a complex task that relies on many disciplines including oceanography, civil and environmental engineering, marine biology, construction, economics, and public relations. Marine Wastewater Outfalls and Treatment Systems brings these disciplines together and outlines all tasks involved in the planning and design of a wastewater system involving a marine outfall. This book concerns the design of marine wastewater disposal systems: that is an ocean outfall plus treatment plant. All aspects of outfall design and planning are covered, including water quality design criteria, mathematical modelling of water quality and dilution, gathering required oceanographic data, appropriate wastewater treatment for marine discharges, construction materials for marine pipelines, forces on pipelines and outfall design, outfall hydraulics, outfall construction, tunnelled outfalls, operation and maintenance, monitoring, case studies are discussed and methods for gaining public acceptance for the project are presented. Finally, costs for many outfalls around the world are summarized and methods for estimating costs are given. This is the first book to consider all aspects of marine outfall planning and construction. The authors are all extensively involved with outfall schemes and aware of recent developments. The science and technology of all aspects of outfall discharges into coastal waters and estuaries of treated municipal or industrial wastewater has advanced considerably over the past few years. Marine Wastewater Outfalls and Treatment Systems provides an up to date and comprehensive summary of this rapidly developing area.

Sludge Reduction Technologies in Wastewater Treatment Plants is a review of the sludge reduction techniques integrated in wastewater treatment plants with detailed chapters on the most promising and most widespread techniques. The aim of the book is to update the international community on the current status of knowledge and techniques in the field of sludge reduction. It will provide a comprehensive understanding of the following issues in sludge reduction: * principles of sludge reduction techniques; * process configurations; * potential performance; * advantages and drawbacks; * economics and energy consumption. This book will be essential reading for managers and technical staff of wastewater treatment plants as well as graduate students and post-graduate specialists.

Paperback + CD-ROM Closing the loop for nutrients in wastewaters (municipal sewage, animal wastes, food industry, commercial and other liquid waste streams) is a necessary, sustainable development objective, to reduce resource consumption and greenhouse gas emissions. Chemistry, engineering and process integration understanding are all developing quickly, as new processes are now coming online. A new "paradigm" is emerging, globally. Commercial marketing of recovered nutrients as "green fertilizers" or recycling of nutrients through biomass production to new outlets, such as bioenergy, is becoming more widespread. This exciting conference brings together various waste stream industries, regulators, researchers, process engineers and commercial managers, to develop a broad-based, intersectional understanding and joint projects for phosphorus and nitrogen recovery from wastewater streams, as well as reuse. Over 90 papers from over 30 different countries presented in this volume. This conference is sponsored by: * Metro Vancouver * Global Phosphate Forum * Stantec Consulting Ltd. * The Chartered Institution of Water and Environmental Management (CIWEM) * Ostara Nutrient Recovery Technologies, Inc. (ONRTI) * The University of British Columbia (UBC) * The United States Environmental Protection Agency (EPA) * The British Columbia Water and Wastewater Association (BCWWA) * The Canadian Society for Civil Engineering (CSCE) * The Ostara Research Foundation (ORF)

Water Reuse: An International Survey of current practice, issues and needs examines water reuse practices around the world from different perspectives. The objective is to show how differently wastewater reuse is conceived and practised around the world as well as to present the varied needs and possibilities for reusing wastewater. In the first section water reuse practices around the world are described for regions having common water availability, reuse needs and social aspects. The second section refers to the "stakeholders" point of view. Each reuse purpose demands different water quality, not only to protect health and the environment but also to fulfil the requirements of the specific reuse. Reuses considered are agricultural, urban agriculture as a special case of the former, municipal and industrial. Alongside these uses, the indirect reuse for human consumption through aquifer recharge is also discussed. The third section deals with emerging and controversial topics. Ethical and economical dilemmas in the field are presented as a subject not frequently addressed in this field. The role of governments in respect of public policy in reuse is discussed as well as the different international criteria and standards for reusing wastewater. The importance of public acceptance and the way to properly handle it is also considered. The fourth section of the book presents contrasting case studies; typical situations in the developed world (Japan and Germany) are compared to those in developing countries (Pakistan and Brazil) for agricultural and industrial reuse. Indirect planned reuse for human consumption (Germany) is compared with an unplanned one (Mexico). The Windhoek, Namibia case study is presented to emphasize why if the direct reuse of wastewater for human consumption has been performed with success for more than 35 years it is still the only example of this type around the world. To illustrate the difficulties of having a common framework for regulating water reuse in several countries, the Mediterranean situation is described. Other case studies presented refer to the reuse situation in Israel, Spain, Cameroon, Nepal and Vietnam, these latter countries being located in water rich areas. This book will be an invaluable information source for all those concerned with water reuse including water utility managers, wastewater policy makers and water resources planners as well as researchers and students in environmental engineering, water resources planning and sanitary engineering. Scientific and Technical Report No. 20

This WERF sponsored research addresses the utility of bioassessment for managing aquatic life uses in urban and/or urbanizing catchments. Heavily urbanized catchments present a problem for facilities and water quality managers struggling to balance the socio-economic needs of urban areas with aquatic life use standards. Most standards do not recognize the limitations on achievable biological condition in urban areas. This research specifically defines a process for developing alternative biological benchmarks for aquatic life use in urban catchments. This research was conducted across three distinct climatic regions and describes a threestep process: 1) developing a primary urbanization gradient, 2) assembling an appropriate urban biological index, and 3) defining a biological potential that describes the highest biological condition currently achieved along the urban gradient. The primary urban gradient is developed using simple landscape and socio-economic measures of urbanization. Alternative urban gradients, comparable to the primary gradient, are presented that can be used as data availability and resources require. The primary biological indicator is developed using a subset of commonly collected biological metrics. Lastly, biological potential is defined using quantile regression to characterize the upper boundary on biological condition observed along the primary urban gradient. This approach establishes empirically defined and realistic aquatic life use benchmarks for urbanized catchments, and describes a process by which the aquatic life use status of waterbodies in urbanized catchments can be placed in a realistic context. Guidance on implementation is provided for WERF subscribers for their particular urban areas.

Biological Wastewater Treatment in Warm Climate Regions gives a state-of-the-art presentation of the science and technology of biological wastewater treatment, particularly domestic sewage. The book covers the main treatment processes used worldwide with wastewater treatment in warm climate regions given a particular emphasis where simple, affordable and sustainable solutions are required. This comprehensive book presents in a clear and informative way the basic principles of biological wastewater treatment, including theory and practice, and covering conception, design and operation. In order to ensure the practical and didactic view of the book, 371 illustrations, 322 summary tables and 117 examples are included. All major wastewater treatment processes are covered by full and interlinked design examples which are built up throughout the book, from the determination of wastewater characteristics, the impact of discharge into rivers and lakes, the design of several wastewater treatment processes and the design of sludge treatment and disposal units. The 55 chapters are divided into 7 parts over two volumes: Volume One: (1) Introduction to wastewater characteristics, treatment and disposal; (2) Basic principles of wastewater treatment; (3) Stabilisation ponds; (4) Anaerobic reactors; Volume Two: (5) Activated sludge; (6) Aerobic biofilm reactors; (7) Sludge treatment and disposal. As well as being an ideal textbook, Biological Wastewater Treatment in Warm Climate Regions is an important reference for practising professionals such as engineers, biologists, chemists and environmental scientists, acting in consulting companies, water authorities and environmental agencies.

Chloramination of drinking water is not a new technology. Some water utilities have successfully used chloramines for over 40 years; other utilities have experienced problems including nitrification, stimulation of biological growth, an inability to maintain adequate chlorine residuals, and customer complaints about the taste and/or odor of the water. Today, many utilities are considering chloramines as a secondary disinfectant within their distribution system, primarily as an economical method to meet ever more stringent disinfection byproduct limits. The primary purpose of this project was to develop material that could be used as a concise and practical guidance manual for those responsible for chloramination at water works facilities. A survey was conducted by mail of 63 public water systems that use chloramines. Telephone interviews were used as a follow-up to clarify information and gain additional insight into daily operations. Thirteen utilities were selected for an in-depth on-site visit to establish today's best operating practice for chloramination. These results were compared against a review of the current pertinent literature. Finally, a user's guide was compiled for those implementing or using chloramines. Originally published by AwwaRF for its subscribers in 2004.

Utilities are required to measure TOC concentrations in treatment plant influents and waters that contain a variety of dissolved molecules and organic particles. Uncertainties about the analytical accuracy of TOC measurements are the result of inadequate proficiency evaluation standards. The three primary research goals of the project were to: (1) develop total organic carbon (TOC) standards that can be used with all TOC methodologies to evaluate performance; (2) determine the ability of different TOC methodologies to accurately measure TOC; (3) test the ruggedness of the proficiency standards in a round-robin survey involving a large number of laboratories. A fourth goal was to determine the contribution of natural organic particles and suspended organic carbon (SOC) in the formation of DBPs. In general, all laboratories performed well in the analysis of an easily oxidized standard, potassium hydrogen phthalate (KHP). In contrast, several analysts had difficulty in efficiently separating an inorganic C (IC) amendment from the KHP standard when a 30 mg IC/L spike was added to the standard.Averaged over all instruments and analysts, standards that were solutions were analyzed with 92 9 per cent recovery, while standards that were particles were analyzed with 55 21 per cent recovery. The project data suggest that particles can compete with dissolved precursor material in reactions with applied disinfectants and contribute DBP precursors Originally published by AwwaRF for its subscribers in 2003

Tapping the Oceans provides a detailed analysis of the political and ecological debates facing water desalination in the twenty-first century. Water supplies for cities around the world are undergoing profound geographical, technological and political transformations. Increasingly, water-stressed cities are looking to the oceans to fix unreliable, contested and over-burdened water supply systems. Yet the use of emerging desalination technologies is accompanied by intense debates on their economic cost, governance, environmental impact and poses wider questions for the sustainable and just provision of urban water. Through a series of cutting-edge case studies and multi-subject approaches, this book explores the perspectives, disputes and politics surrounding water desalination on a broad geographical scale. As the first book of its kind, this unique work will appeal to those researching water and infrastructure issues in the fields of political ecology, geography, environmental science and sustainability. Industry and water managers who wish to understand the political debates around desalination technology more fully will also find this an informative read. Contributors include: E. Feitelson, M. Fragkou, S. Gorostiza, A. Loftus, H. March, J. McEvoy, D. Pavon Gamero, D. Sauri, A. Scheba, S. Scheba, E. Swyngedouw, M. Usher, J. Williams

Wastewater treatment works have the potential to generate unpleasant odours, which can results in annoyance and consequently have a detrimental effect on a local population. As a result 'odour control and prevention' has become an important consideration both in the management of existing facilities and in the design and gaining of planning consent for new works. Odours in Wastewater Treatment provides readers with a detailed discussion on the basic principles involved in the formation of volatile compounds in wastewater treatment. Accounts are given of recent developments in the sampling and measurement of odours, practical examples in the prediction and dispersion of odorous emissions are offered and an overview of the technologies currently used to contain and treat odorous compounds presented. Contents Introduction Odours associated with wastewater treatment Odour sampling and measurement Assessment and prediction of nuisance odours Odour control and treatment

Economic issues arise in almost every water policy context. Water is of most concern when scarce, but physical scarcity is often overcome as human beings move water from place to place, sometimes creating monumental structures. The roles that cost and economic value play in water resource allocation are implicit, but often poorly understood. This second edition clarifies the role of economics and offers material that can be applied to water resource allocation problems around the world. Topics covered include: groundwater, floods and droughts, in situ uses of water, and institutions and law. New to the book is an exploration of water issues outside the United States as well as a new application of behavioral and experimental economics to the topic. A concise introduction to issues of water quality and quantity in both urban and agricultural settings, Water Resource Economics and Policy will be a valuable resource or text for students and researchers in the fields of agricultural economics, geography, law, and hydrology. Those involved in water resource agencies and private utilities will also find the book a useful reference. Acclaim for the first edition: 'This textbook is written for first-year graduate students and senior level undergraduates in economics. ... Graduate students in geography, water resources, and environmental management should also be interested. The well-done helpful diagrams and charts are those expected for a textbook in economics at this level. In every chapter many interesting real-world examples illustrate the concept being discussed. Some chapters have easy-to-read case studies set off from the text. ... I plan on keeping this excellent book as a shelf reference and would willingly adopt it for a class in water resource economics.' - Donald E. Agthe, Journal of the American Water Resources Association 'This is a much-needed book, which introduces the interested reader to the economics of water resource allocation, and analyzes relevant policy issues derived from all over the world. To the best of my knowledge, this is the first book which is focused on communicating the basic economic concepts that govern water resources allocation. ... The lively writing style of W. Douglass Shaw, which is enriched with excellent examples and case studies from various countries, makes this book an obvious choice for a textbook in relevant courses ... this excellent book should be a compulsory reading for all of us who work in the field of water resources management.' - Phoebe Koundouri, Ecological Economics

Shared water resources in Israel and Palestine are often the site of political, economic, historical, legal and ethical contestation. In this, the second of two volumes on the subject, the authors look beyond the political tensions of the region, to argue for the need for shared water security and co-operative resource management. Winning Water Security for Palestinians and Israelis, the authors assess water security in terms of security of access to water resources, security of access to water services and security against risks to and from water. The volume compares and contrasts Israelis remarkable water security with the corresponding water insecurity of the Palestinians. The authors also set out the practical, economic, legal and ethical rationale for a revised cooperation on water security between the two peoples, proposing a workable scheme for putting into practice a new form of cooperation that would hope to benefit both peoples and strengthen their water security.

This volume considers how Greco-Roman authorities manipulated water on the practical, technological, and political levels. Water was controlled and harnessed with legal oversight and civic infrastructure (e.g., aqueducts). Waterways were 'improved' and made accessible by harbors, canals, and lighthouses. The Mediterranean Sea and Outer Ocean (and numerous rivers) were mastered by navigation for warfare, exploration, settlement, maritime trade, and the exploitation of marine resources (such as fishing). These waterways were also a robust source of propaganda on coins, public monuments, and poetic encomia as governments vied to establish, maintain, or spread their identities and predominance. This first complete study of the ancient scientific and public engagement with water makes a major contribution to classics, geography, hydrology and the history of science alike. In the ancient Mediterranean Basin, water was a powerful tool of human endeavor, employed for industry, trade, hunting and fishing, and as an element in luxurious aesthetic installations (public and private fountains). The relationship was complex and pervasive, touching on every aspect of human life, from mundane acts of collecting water for the household, to private and public issues of comfort and health (latrines, sewers, baths), to the identity of the state writ large.

Globally, poor hygiene and sanitation contribute to more than 1,000 daily deaths from diarrhoeal diseases among children under the age of 5, while two thirds of urban wastewaters are discharged without treatment into lakes, rivers and coastal waters. Across Europe the percentage of the population connected to wastewater treatment plants varies from 14% to >99% with many reliant on unsuitable decentralised sanitation systems or no wastewater treatment at all. With less than a decade left to achieve the 2030 sanitation targets as set out in the Sustainable Development Goals, there is an urgent need to develop new treatment solutions that can be rapidly deployed to meet the needs of growing urban and peri-urban populations, together with under-served rural communities. This book discusses decentralised wastewater treatment and the role of nature-based solutions within the context of the twenty-partner international INNOQUA project. INNOQUA set out to develop and demonstrate a suite of modular, low cost, decentralised solutions that use the combined capabilities of earthworms, bacteria, Cladocera and micro-algae to deliver nature-based primary, secondary and tertiary treatment - followed by UV disinfection. Design and operation principles are outlined, together with performance data and practical feedback from pilot and demonstration facilities situated in eleven countries from Ecuador to Scotland and India. Barriers and drivers towards more widespread uptake of these technologies are also examined, alongside an exploration of existing markets for nature-based sanitation in the Global South.

Environmental problems caused by the increase of pollutant loads discharged into natural water bodies requires the formation of a framework for regulation and control. This framework needs to be based on scientific results that relate pollutant discharge with changes in water quality. The results of these studies allow the industry to apply more efficient methods of controlling and treating waste loads, and water authorities to enforce appropriate regulations regarding this matter. Water pollution problems are essentially interdisciplinary. Engineers and scientists working in this field must be familiar with a wide range of issues including the physical processes of mixing and dilution, chemical and biological processes, mathematical modelling, data acquisition and measurement, to name but a few. In view of the scarcity of available data, it is important that experiences are shared on an international basis. Thus, a continuous exchange of information between scientists from different countries is essential. Papers presented at Water Pollution 2020, the 15th International Conference in the series of Monitoring, Modelling and Management of Water Pollution, are contained in this volume and highlight research works from scientists, managers and academics from different areas of water contamination.

Industry wastewater is a major contributor to environmental pollution with chemicals such as dyes, acids, fungicides, and more creating a threat to the environment. Nanocomposites of heterogeneous photocatalysis can be used to cure such problems due to its efficiency and ease of use, as well as the fact that it turns toxic chemicals completely to carbon dioxide and inorganic acids. With toxic chemicals posing a tremendous threat to ecological wellbeing and human health, it is integral that a variety of nanocomposites are studied for their use in the degradation of toxic and hazardous chemicals. Innovative Nanocomposites for the Remediation and Decontamination of Wastewater describes the synthesis of nanomaterials and its application for the protection of the environment. It presents studies on the photodegradation of the various toxic and hazardous chemicals by different nanocomposites, as well as the decontamination of bodies of water through the use of various nanocomposites. Covering topics such as dye degradation, novel biomaterials, and structural modification, this premier reference source is a vital resource for environmental scientists, construction managers, compliance officers, biochemists, biophysicists, conservation scientists, hydrologists, microbiologists, libraries, students and educators of higher education, researchers, and academicians.