This volume presents a critical analysis and timely synthesis of the past decade of intensive research, development, and demonstrations on the in situ bioremediation of perchlorate in groundwater. The intended audiences include the decision makers, practicing engineers and hydrogeologists who will select, design, and operate these remedial systems, as well as researchers seeking to improve the current state-of-the-art. Our hope is that this volume will serve as a useful resource to assist remediation professionals in applying and developing the technology as effectively as possible. An overview of the current state-of-understanding of perchlorate remediation is followed by a discussion of basic principles of microbial and abiotic processes, and of the engineering and implementation issues underlying the technologies described. Characterization of both anthropogenic and natural sources of perchlorate, including isotopic analysis to distinguish between differing sources, precedes discussions of the advantages, performance, and relative costs of applying a range of remedial technologies. Active, semi-passive, and passive in situ bioremediation are fully described and compared with emphasis on field application. Cost information for each technology, using case studies and analyses of several template sites, covers capital costs, as well as costs for laboratory testing, pilot-scale demonstration, design, system operation, monitoring and maintenance during operations, and demolition and restoration after remediation. In addition, analogous cost data are presented for pump-and-treat systems for each template site to illustrate the potential cost savings associated with the use of alternative approaches. Emerging technologies such as monitored natural attenuation, phytoremediation, and vadose zone bioremediation are described, and field demonstrations are used to illustrate the current stage of maturity and the potential applicability of these approaches for specific situations. Each chapter in this volume has been thoroughly reviewed for technical content by one or more experts in each subject area covered.

Hands-On Maintenance for Water/Wastewater Equipment deals with equipment maintenance as individual components, not as complete machines. This allows more information about the design, application and maintenance requirements of machinery to be presented. The text covers basic operating characteristics of machinery components, making it a valuable reference source as well as a training and maintenance manual. Written in easy-to-understand language, without complex formulas or technical theories, this text provides you with basic information to help you acquire a general understanding of how components function and how to keep equipment operating properly.

This text covers the proceedings of the third International Symposium - TISAR 98, held in Amsterdam. Topics include: basin recharge; water management in arid regions; behaviour of pollutants; bank, basin, well and other types of recharge; and storage and recovery efficiency.

Every spring, the University of Massachusetts - Amherst welcomes all ''Soils Conference" Scientific Advisory Board members with open arms as we begin the planning process responsible for bringing you quality conferences year after year. With this "homecoming" of sorts comes the promise of reaching across the table and interacting with a wide spectrum of stakeholders, each of them bringing their unique perspective in support of a successful Conference in the fall. This year marks the 20 DEGREES DEGREES anniversary of what started as a couple of thoughtful scientists interested in developing partnerships that together could fuel the environmental cleanup dialogue. Since the passage of the Superfund Law, regulators, academia and industry have come to realize that models that depend exclusively on ''command and control" mandates as the operative underpinning limit our collective ability to bring hazardous waste sites to productive re-use. It is with this concern in mind that the Massachusetts Department of Environmental Protection privatized its cleanup program in 1993, spurring the close-out of over 20,000 sites and spills across the Commonwealth to date, in a manner that is both protective of human health and the environment while also flexible and responsive to varied site uses and redevelopment goals. So we gather together again, this year, to hear our collective stories and share success and challenges just as we share stories at a family gathering. Take a read through the stories contained in these proceedings.

FROM THE PREFACE Wastewater collection systems are dynamic, not static. There is no single maintenance method, equipment, or technique that works best. Keeping an open mind, trying new techniques and technologies benefits sewer system operators. No two collection systems are alike. Maintenance staffing, skill levels, equipment, budgets, age and complexity of the system make each agency unique. However, collection systems do have many traits and problems in common. Based on inventory and analysis, problems are identified. Defects may then be prioritized, and corrective maintenance operations put into effect. Preventive maintenance techniques can be applied to all collection systems. Preventive maintenance is cost-effective; it strives to prevent problems from occurring rather than reacting to difficult situations and "putting out fires." This book examines problems shared by all agencies: roots, grease, deterioration, hydraulic inefficiencies and structural defects. New solutions to age-old problems are applied: TV inspection and video interpretation, rehabilitation analysis and trenchless technologies. Computerized maintenance management and GIS softwares are discussed. Jetting, line cleaning and exciting developments in nozzle technology are included. Roots and chemical root control foam, wastewater control and grease are major topics as well. Wastewater Collection System Maintenance shares insights drawn from operator experience, trial and error, successes and failures in the field, interviews and years of research and studies. A user-friendly rating and evaluation system is explained and applied to field conditions. Equipment operation and maintenance, and "tricks of the trade" are also discussed. As cities grow, new systems are extended upstream from older sewers. Many of these core drainage basins are now under capacity and in need of capital improvement projects. There are approximately 600,000 miles of sanitary sewers in the country. Nationwide, there exists a huge backlog of sewer pipes that need rehabilitation. Replacement would cost many billions of dollars. Maintenance operators are entrusted with the care and feeding of an aging sewer infrastructure.

This text provides an account of the nature and applications of the Coliform Index. Since the beginning of the 20th century, indicator organisms, in particular the coliform group, have been used to ensure the microbial quality of drinking water. World-wide legislation to protect consumers is based on these out-dated and unreliable tests and while there is considerable concern among scientists over their use, the water industry and regulators continue to place near total reliance on the Coliform Index. This has serious implications for public health and necessitates the debate which this book enters.

Freshwater is a finite resource as essential to agriculture and industry as it is to basic human existence. Water quality monitoring is a fundamental tool in the management of freshwater resources, and this book explores the monitoring operation. The book highlights the impact of human activity on water resources - both surface and groundwater; provides a general protocol for the design and implementation of a monitoring programme; provides detailed sampling and analytical methods; and explains the detection and monitoring of trends in the water environment. The book provides a basis for designing and implementing water quality monitoring programmes and studies of the impact of human activities on water bodies. It brings together information on proven methods and thus should be useful for anyone concerned with water quality monitoring a scientific, managerial or engineering background, including field staff. An overview of the principles underlying hydrological, chemical, biological and sediment measurements together with their importance and relevance to water quality monitoring is also included.

Many areas of the world are arid or semi-arid. This text looks at the problems caused by the loss of water stored in lakes and reservoirs for irrigation and domestic use by evaporation during the summer months.

This comprehensive reference provides thorough coverage of water and wastewater reclamation and reuse. It begins with an introductory chapter covering the fundamentals, basic principles, and concepts. Next, drinking water and treated wastewater criteria, guidelines, and standards for the United States, Europe and the World Health Organization (WHO) are presented. Chapter 3 provides the physical, chemical, biological, and bacteriological characteristics, as well as the radioactive and rheological properties, of water and wastewater. The next chapter discusses the health aspects and removal treatment processes of microbial, chemical, and radiological constituents found in reclaimed wastewater. Chapter 5 discusses the various wastewater treatment processes and sludge treatment and disposal. Risk assessment is covered in chapter 6. The next three chapters cover the economics, monitoring (sampling and analysis), and legal aspects of wastewater reclamation and reuse.
This practical handbook also presents real-world case studies, as well as sources of information for research, potential sources for research funds, and information on current research projects. Each chapter includes an introduction, end-of-chapter problems, and references, making this comprehensive text/reference useful to both students and professionals.

Water Quality Hazards and Dispersion of Pollutants contains invited contributions dealing with various aspects of water quality in rivers. Water quality is influenced by many processes, the understanding of which are still far from being conclusive. Therefore, particular emphasis was put on the physics of the processes and the methods of athematical modeling of them. The book provides twelve comprehensive papers dealing with the recognition, description and modeling of physical, chemical and biological processes governing the fate of pollutants in an aquatic environment. The volume contains only papers written by invited contributors, active researchers and leading experts in the field from European countries.

This book reviews the work in the field of nanoadsorbents derived from natural polymers, with a special emphasis on materials finding application in water remediation. It includes natural materials both with an organic or an inorganic skeleton, from which the nanomaterials can be made. Those nanomaterials can therefore be used to reinforce other matrices and in their pristine form have an extraordinary adsorption efficiency. Being of natural or biological origin, the materials described in this book distinguish themselves as eco-friendly and non-toxic. The book describes how these benefits of the described materials can be combined and exploited. It will thus appeal to chemists, nanotechnologists, environmental engineers and generally all scientist working in the field of water pollution and remediation as an inspiration for the innovation toward new technologies.

Evaluating the effectiveness of conventional wet processes for cleaning silicon wafers in semiconductor production, this reference reveals concrete measures to improve ultrapure water quality reviewing the structure and physical characteristics of ultrapure water molecules. The volume is divided int

Reviews of Environmental Contamination and Toxicology attempts to provide concise, critical reviews of timely advances, philosophy and significant areas of accomplished or needed endeavor in the total field of xenobiotics, in any segment of the environment, as well as toxicological implications.

This book presents an overview of current research problems and advances in theoretical and applied aspects of environmental hydraulics. The rapid development of this branch of water studies in recent years has contributed to our fundamental understanding of processes in natural aquatic systems and helped provide solutions for civil engineering and water resources management. The book features comprehensively reviewed versions of invited lectures and regular presentations given at the 38th International School of Hydraulics, held May 21-24, 2019, in Lack, Poland. With papers by leading international experts as well as young researchers from around the globe, it covers recent findings from laboratory and field studies, numerical modeling related to sediment and pollutant transport processes in rivers, fluvial morphodynamics, flow in vegetated channels and hydraulic structures in rivers and estuaries.

Move past the "yuck factor" by learning the benefits and science behind recycling wastewater to beat climate change. In recent years, humans have begun to turn the age-old taboo against mixing sewage and drinking water on its head by using advanced treated wastewater to supplement a city's drinking water supply. This increasingly widespread practice, known as potable reuse, qualifies as nothing less than a drinking water revolution. Water reuse offers a renewable, locally managed, and drought resistant water supply. The Water Recycling Revolution tracks the story of this development, examines the pros and cons, and explores its future potential. In this book, William M. Alley and Rosemarie Alley answer our most pressing questions: How do you get people to overcome the visceral reaction known as the "Yuck Factor" and not only drink, but appreciate, recycled water? What about all those pharmaceuticals and personal care products that people casually flush down the drain? Will diverting discharges from a wastewater treatment plant damage downstream users or ecosystems that previously depended on that water? And what are the implications for climate change? These questions are answered by delving into the history of major water recycling projects from California to Virginia, each with a unique story of what led them to develop potable reuse, as well as the challenges they had to overcome. Additional concerns addressed include pathogens, contaminants of emerging concern, achieving acceptable risk, onsite and decentralized reuse systems, and direct potable reuse. Recycling wastewater can make for a bright future in the fight against climate change, and this book is a valuable resource to convince readers.

With the advent of the Safe Drinking Water Act Amendments of 1986, many water utilities are reexamining their water treatment practices. Upcoming new regulations on disinfection and on disinfection by-products, in particular, are the primary driving forces for the big interest in ozone. It appears that ozone, with its strong disinfection capabilities, and apparently lower levels of disinfection by-products (compared to other disinfectants), may be the oxidant/disinfectant of choice. Many utilities currently using chlorine for oxidation may need to switch due to chlorine by-product concerns. Utilities using chloramines may need to use ozone to meet CT requirements.
This book, prepared by 35 international experts, includes current technology on the design, operation, and control of the ozone process within a drinking water plant. It combines almost 100 years of European ozone design and operating experience with North American design/operations experience and the North American regulatory and utility operational environment. Topics covered include ozone chemistry, toxicology, design consideration, engineering aspects, design of retrofit systems, and the operation and economics of ozone technology. The book contains a "how to" section on ozone treatability studies, which explains what information can be learned using treatability studies, at what scale (bench, pilot, or demonstration plant), and how this information can be used to design full-scale systems. It also includes valuable tips regarding important operating practices, as well as guidance on retrofits and the unique issues involved with retrofitting the ozone process.
With ozone being one of the hottest areas of interest in drinking water, this book will prove essential to all water utilities, design engineers, regulators, and plant managers and supervisors.

We, the editors, have long believed that a strong knowledge of relatively simple economic and engineering concepts is valuable in solving water management problems. The lack of such knowledge has been apparent to us in some of the journal articles, research proposals and books we have reviewed. The articles which have been written concerning specific local water economies and management issues are scattered over a wide variety of journals, making them hard to access. Most of the extensive water resources literature is concerned with large regional water projects or with narrow technical and regional issues. This book was written to make practical economic and engineering concepts readily available to urban water supply managers, thereby filling a gap in the available literature. It is concerned with decisions made daily, monthly, or annually by managers of urban water supply systems. The book includes basic chapters presenting supply and cost concepts, calculation of demand elasticities, use of marketing concepts, public goods analysis, water markets, industrial water demand and the use of price in water conservation. The authors have included multiple examples of how these concepts can aid in managing urban water supply. The water provider is generally a governmental entity or regulated private utility. Most books on public utilities and their management emphasize gas, electricity, or telephone rather than water. Water is different because of m or variations in quality by source and the necessity for proper disposal of waste water.

This book explores environmental challenges in the Baltic region from an economic perspective. Featuring contributions from regional experts from Nordic, Baltic and Eastern European countries it addresses the response to eutrophication caused by increased loads of nutrients to the sea from agriculture, wastewater, industry and traffic, and cost-effective solutions to reach the Baltic Sea Action Plan (BSAP) targets, set up through the Helsinki Commission (HELCOM). Contributions also explore the environmental impacts of rural landscape change during the post-communist period in the Baltic Sea region and a review of the ex-post evaluations of the costs and benefits generated by Baltic Sea nutrient abatement policies. Public policies towards marine protection, wind power establishment, and attitudes to paying for environmental protection, environmental resilience and the international cooperation in the Baltic region are also discussed.

Our current knowledge on chemicals in the Mediterranean Sea is presented. The increasing rates of exploitation and pollution are producing unprecedented environmental changes in this semi-enclosed sea, which is often considered a unique model to study global change evolution of our ocean and coastal seas. This volume deals with several aspects of the chemical contamination of the Mediterranean Sea and its health. After a description of the general physical and socio-economic context, exploration of processes governing the fate of chemicals, the budget of both inorganic and organic major and preoccupant contaminants and a description of new tools to study the impact of pollution on the Mediterranean Sea are discussed. The book serves as a reference source for the chemical aspects of the Mediterranean Sea for students and scientists and a practical guide for those who have professional responsibility for the management and operation of environmental impact assessment programmes.

In recent years, a greater level of integration of the world economy and an opening of national markets to trade has impacted virtually all areas of society. The process of globalization has the potential to generate long-term benefits for developing countries, including enhanced technology and knowledge transfers and new fina- ing options supporting agricultural and economic development. However, risks of political and economic instability, increased inequality, and losses in agricultural income and production for countries that subsidize their agricultural and other e- nomic sectors threaten to offset potential benefits. Globalization can also have a profound impact on the water sector - in terms of allocation and use of water - and thus on food security as well. Other global change processes, particularly climate change, are also likely to have far-reaching impacts on water and food security, and societies around the world. To discuss these issues in-depth, the International Food Policy Research Institute, the Third World Centre for Water Management, Mexico, and the Tropical Agricultural Research and Higher Education Center (CATIE), Costa Rica, held a three-day International Conference on "Globalization and Trade: Implications for Water and Food Security," at CATIE's Turrialba, Costa Rica, headquarters under the auspices of the CGIAR Challenge Program on Water and Food in 2005. The workshop set out to identify the major risks and emerging issues facing developing countries related to global economic and environmental change impacts on water and food security.

This book comprises select papers from the International Conference on Emerging Trends in Civil Engineering (ICETCE 2018). Latest research findings in different branches of civil engineering such as structural engineering, construction materials, geotechnical engineering, water resources engineering, environmental engineering, and transportation infrastructure are covered in this book. The book also gives an overview of emerging topics like smart materials and structures, green building technologies, and intelligent transportation system. The contents of this book will be beneficial for students, academicians, industrialists and researchers working in the field of civil engineering.

This volume offers an overview of the occurrence and distribution of personal care products in continental and marine waters, presents analytical methods and degradation technologies and discusses their impact on human health. Experts from different disciplines highlight major issues for each family of compounds related to their occurrence in the water column as well as in solid and biota samples, methodological strategies for their analysis, non-conventional degradation technologies, (eco)toxicity data and their human and environmental risk assessment. The book also includes a general introduction to personal care products, covering their properties, use, behaviour and regulatory framework, and a final chapter identifying knowledge gaps and future research trends. It will appeal to experts from various fields of research, including analytical and environmental chemistry, toxicology and environmental engineering.

Foodandwatersecurityissuesareregardedassinequanonif asocietywants to p- mote health, peace and prosperity. People who are well fed are also people with the means to changetheir situation. However, this is still an immense challengefor Asia especiallyintheglobalenvironmentalperspectiveinthe21stcentury. Peoplearound the globe will be facing a combination of problems concerning both environmental as well as social changes; therefore, the policy for future food and water security has to be upgraded in an integrated and holistic way. The need to put into persp- tive the ever-mounting body of new information on environmental security of food and water issues in Asia beyond the boundaries of separate disciplines provided the impetus for the development of this book. It is a compilation of selected ar- cles from two international symposiums entitled "Food and Water Sustainability in China 2007" and "Food and Water Sustainability in Asia 2008" which were held in Macau, China. Eminent scientists/researchers from different parts of Asia spoke at the symposium on topics such as the challenges in sustainable water resource m- agement, future projection of development strategies for sheries, increased yield of food grains by rainwater management in arid lands, multi-functional role of rice paddy area for food and water sustainability, the impact of biofuel production on food security, reclaimed wastewater for sustainable urban water use, heavy metal removal from contaminated soil and water, and adaptation strategies to cope with the climate change issues for food and water.

This book outlines the current status of water resources management in Central Asia countries, and provides a review of the history, policies and transboundary cooperation regarding water resources in the region. Particular attention is given to the water-energy-food-environmental nexus, and to the application of the UNECE Environmental Conventions in Central Asia. Readers will also learn about the US and German environmental policies applied in Central Asia, and will discover specific case studies on water resources policies in Kazakhstan, China, Kyrgyzstan, Uzbekistan, Tajikistan, Turkmenistan, and Afghanistan. Together with the companion volumes on Water Bodies and Climate Change in Central Asia and Water Resources Management in Central Asia, it offers a valuable source of information for a broad readership, from students and scientists interested in the environmental sciences, to policymakers and practitioners working in the fields of water resources policy and management, international relations, and environmental issues.

This volume discusses the theoretical fundamentals and potential applications of the original electro-Fenton (EF) process and its most innovative and promising versions, all of which are classified as electrochemical advanced oxidation processes. It consists of 15 chapters that review the latest advances and trends, material selection, reaction and reactor modeling and EF scale-up. It particularly focuses on the applications of EF process in the treatment of toxic and persistent organic pollutants in water and soil, showing highly efficient removal for both lab-scale and pre-pilot setups. Indeed, the EF technology is now mature enough to be brought to market, and this collection of contributions from leading experts in the field constitutes a timely milestone for scientists and engineers.