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Books > Professional & Technical > Environmental engineering & technology > Sanitary & municipal engineering

Storm Drainage - An engineering guide to the low-cost evaluation of system performance (Paperback): Pete Kolsky Storm Drainage - An engineering guide to the low-cost evaluation of system performance (Paperback)
Pete Kolsky
R450 Discovery Miles 4 500 Ships in 12 - 17 working days

Millions of slum residents across the world suffer the hazards and misery of frequent flooding of their streets and homes, which may result in the savings of a lifetime being washed away in a few hours, damaged property, loss of work and time, and higher risks of diarrhea, worm infection, and other health problems. This manual is written to help engineers, aid, and agency workers more clearly to understand drainage problems in the developing world, so that they can work towards finding practical solutions. It focuses on three questions of particular relevance to low-income urban areas in developing countries: What is drainage performance? How can we evaluate a drainage system to improve its performance? What are the effects of solids on the performance of drains? This manual is the outcome of two-and-a-half years of fieldwork in the city of Indore, in Madhya Pradesh, India and can be used as a practical aid by municipal engineers, consulting engineers, and engineering instructors and students, as well as development and aid workers involved in drainage systems.

Strategic Risk Communications Process for Biosolids Land Application Programs (Paperback): Gordon Butte, Sara Eggers, Sergey... Strategic Risk Communications Process for Biosolids Land Application Programs (Paperback)
Gordon Butte, Sara Eggers, Sergey Sivaev, Ella Shalukhina, Seung-Hyun Kim
R3,242 Discovery Miles 32 420 Ships in 12 - 17 working days

The long-term viability and sustainability of biosolids land application is dependent on continuously earning stakeholder confidence, trust and support. This requires ongoing and effective engagement and communication with key stakeholders about the beneficial use of biosolids in their communities. The goal of the risk communications research was to develop processes, tools and materials to help biosolids managers conduct effective outreach and dialogue with key stakeholders in the communities where they operate, first on biosolids land application and its beneficial use, then on specific challenges such as communicating about potential health risks due to pathogens in biosolids. The researchers developed a state-of-the-science Strategic Risk Communications Process, tools and materials that can be adapted and used by biosolids program managers. The Process was applied and validated through two case studies, which involved in-depth research with landowners who receive biosolids and neighbors to biosolids land application sites and, in one case, community health officials. The research demonstrated that the key influence on these stakeholders' judgments on the acceptability of biosolids land application is the trust they have in the people who are producing the product, the people who are using the product and the people are overseeing and ensuring the safe appropriate use of biosolids. These stakeholders recognized the benefits and risks associated with biosolids land application and support its beneficial use. However, their support was not unconditional - they had questions about the long-term health and environmental impacts of such application. The process, tools and materials developed through this project will serve to address these and other key questions, while enabling biosolids managers to continually build stakeholder support for biosolids land application.

Evaluation of GHG Emissions from Septic Systems (Paperback): Harold Leverenz, George Tchobanoglous, Jeannie L Darby, Giampaolo... Evaluation of GHG Emissions from Septic Systems (Paperback)
Harold Leverenz, George Tchobanoglous, Jeannie L Darby, Giampaolo Zuccheri, Nikolaos Asproulis, …
R3,222 Discovery Miles 32 220 Ships in 12 - 17 working days

The emission rates of greenhouse gases (GHGs) from individual onsite septic systems used for the management of domestic wastewater were determined in this study. A static flux chamber method was used to determine the emission rates of methane, carbon dioxide, and nitrous oxide gases from eight septic tanks and two soil dispersal systems. A technique developed for the measurement of gas flow and concentration at clean-out ports was used to determine the mass flow of gases moving through the household drainage and vent system. There was general agreement in the methane emission rates for the flux chamber and vent system methods. Several sources of variability in the emission rates were also identified. The septic tank was the primary source of methane, whereas the soil dispersal system was the principal source of carbon dioxide and nitrous oxide emissions. Methane concentrations from the soil dispersal system were found to be near ambient concentrations, similarly negligible amounts of nitrous oxide were found in the septic tank. All emissions originating in the soil dispersal system were discharged through the building vent as a result of natural, wind-induced flow. The gaseous emission rate data were determined to be geometrically distributed. The geometric mean and standard deviation (sg) of the total atmospheric emission rates for methane, carbon dioxide, and nitrous oxide based on samples from the vent system were estimated to be 10.7 (sg = 1.65), 335 (sg = 2.13), and 0.20 (sg = 3.62) g/capita*d, respectively. The corresponding total anthropogenic CO2 equivalence (CO2e) of the GHG emissions to the atmosphere, is about 0.1 tonne CO2e/capita*yr.

Striking the Balance between Nutrient Removal in Wastewater Treatment and Sustainability (Paperback): J. B. Neethling Striking the Balance between Nutrient Removal in Wastewater Treatment and Sustainability (Paperback)
J. B. Neethling
R3,218 Discovery Miles 32 180 Ships in 12 - 17 working days

This study focuses on sustainability impacts as wastewater treatment plants implement treatment technologies to meet increasingly stringent nutrient limits. The objective is to determine if a point of "diminishing returns" is reached where the sustainability impacts of increased levels of nutrient removal outweigh the benefits of better water quality. Five different hypothetical treatment trains at a nominal 10 mgd flow were developed to meet treatment targets that ranged from cBOD mode (Level 1) to four different nutrient removal targets. The nutrient removal targets ranged from 8 mg N/L; 1 mg P/L (Level 2) to the most stringent at <2 mg N/L; <0.02 mg P/L (Level 5). Given that sustainability is a broad term, the industry-accepted three pillars of sustainability were evaluated and discussed, and particular emphasis was placed on the environmental and economic pillars. The following variables received the most attention: greenhouse gas (GHG) emissions, a water quality surrogate that reflects potential algal growth, capital and operational costs, energy demand, and consumables such as chemicals, gas, diesel, etc. The results from the GHG emissions metric are shown below. Note that biogas cogeneration is represented by negative values as biogas production can be used to offset energy demands. The nitrous oxide (N2O) emissions values are based on the average biological nutrient removal (BNR) and non-BNR plants evaluated in the United States national survey by Ahn et al. (2010b). The error bars represent the data range of the national survey. The GHG emissions results suggest that a point of diminishing return is reached at Level 4 (3 mg N/L; 0.1 mg P/L). The GHG emissions show a steady increase from Levels 1 to 4, followed by a 65% increase when moving from Level 4 to 5. Despite a 70% increase in GHGs, the discharged nutrient load only decreases by 1% by going from Level 4 to 5. The primary contributors to GHG emissions are energy related (aeration, pumping, mixing). The GHG emissions associated with chemical use increases for the more stringent nutrient targets that required chemical treatment in addition to biological nutrient removal. In terms of cost, the total project capital cost increases approximately one-third from $9.3 million to $12.7 million for changing from Level 1 to 2, followed by a more than doubling in cost when changing from Level 1 to 5. Total project capital costs in this report are for a Greenfield plant. The operational cost increase between levels is more pronounced than total project capital cost with more than five-times increase from Level 1 to 5 ($250/MG treated to $1,370/MG treated, respectively). This report focused on in-plant (point source) options for nutrient removal and the implications for cost and sustainability. Other approaches, such as addressing non-point sources, could be added to the assessment. Rather than focusing strictly on point source dischargers and requiring Level 4 or 5 treatments, Level 3 or 4 treatments complimented with best management practices of non-point sources might be a more sustainable approach at achieving comparable water quality.

Nuclear  Waste Management and Legitimacy - Nihilism and Responsibility (Hardcover): Mats Andren Nuclear Waste Management and Legitimacy - Nihilism and Responsibility (Hardcover)
Mats Andren
R4,293 Discovery Miles 42 930 Ships in 12 - 17 working days

Nuclear technology places special demands on society and both nuclear weapons and nuclear energy for peaceful purposes require a large measure of security and monitoring at the international level.

This book focuses on nuclear waste management, which can work in democratic countries only if viewed as legitimate by the population. This book posits the inability of democracies to establish such legitimacy as an explanation for the current absence of public policy decisions that can identify a solution. The problems are such that they can be resolved only if fundamental aspects of the modern notion of legitimacy are set aside.

Metals and Related Substances in Drinking Water (Paperback): Prosun Bhattacharya, Ingegerd Rosborg, Arifin Sandhi, Colin Hayes,... Metals and Related Substances in Drinking Water (Paperback)
Prosun Bhattacharya, Ingegerd Rosborg, Arifin Sandhi, Colin Hayes, Maria Joao Benoliel
R3,252 Discovery Miles 32 520 Ships in 12 - 17 working days

Part of Metals and Related Substances in Drinking Water Set - buy all five books together to save over 30%! Metals and Related Substances in Drinking Water comprises the proceedings of COST Action 637 - METEAU, held in Kristianstad, Sweden, October 13-15, 2010. This book collates the understanding of the various factors which control metals and related substances in drinking water with an aim to minimize environmental impacts. Metals and Related Substances in Drinking Water: Provides an overview of knowledge on metals and related substances in drinking water. Promotes good practice in controlling metals and related substances in drinking water. Helps to determining the environmental and socio-economic impacts of control measures through public participation Introduces the importance of mineral balance in drinking water especially when choosing treatment methods Shares practitioner experience. The proceedings of this international conference contain many state-of-the-art presentations by leading researchers from across the world. They are of interest to water sector practitioners, regulators, researchers and engineers.

Cause and Prevention of Clogging of Wells Abstracting Groundwater from Unconsolidated Aquifers (Paperback): C. G. E. M. (Kees)... Cause and Prevention of Clogging of Wells Abstracting Groundwater from Unconsolidated Aquifers (Paperback)
C. G. E. M. (Kees) Beek
R2,579 Discovery Miles 25 790 Ships in 12 - 17 working days

Part of Groundwater Set - Buy all six books and save over 30% on buying separately! Groundwater serves many purposes. It is a source of public and private drinking water, it is utilized as an industrial feedstock and it is used in agriculture for irrigation and cattle watering. The abstraction of groundwater also serves many civil engineering purposes such as structures, construction pit dewatering and remediation of polluted groundwater. Furthermore, groundwater is increasingly used for supply and storage of energy for the cooling and heating of buildings. Many wells abstracting groundwater suffer from impaired performance as a result of clogging by mechanical or biogeochemical processes. This represents a significant economic loss due to volume reductions, cost of well rehabilitations or construction of new wells. Cause and Prevention of Clogging of Wells Abstracting Groundwater from Unconsolidated Aquifers provides a comprehensive description of the various causes and processes associated with well clogging in addition to describing methodologies for diagnosis and prevention.

Computational Fluid Dynamics in Drinking Water Treatment (Paperback): Bas Wols Computational Fluid Dynamics in Drinking Water Treatment (Paperback)
Bas Wols
R2,577 Discovery Miles 25 770 Ships in 12 - 17 working days

Special Offer: KWR Drinking Water Treatment Set - Buy all five books together and save GBP119! Computational Fluid Dynamics (CFD) uses advanced numerical models to predict flow, mixing and (bio)-chemical reactions. In drinking water engineering, CFD is increasingly applied to predict the performance of treatment installations and to optimise these installations. A lack of understanding of the hydraulics in drinking water treatment systems has resulted in suboptimal design of installations. The formation of unwanted disinfection-by-products and the energy consumption or use of chemicals is therefore higher than necessary. The aim of this work is to better understand the hydraulic and (bio)-chemical processes in drinking water treatment installations using experimental and numerical techniques. By combining these techniques, CFD modelling is further developed as a tool to evaluate the performance of these installations. This leads to new insights in the applicability of models in ozone and UV systems, and new insights in design concepts of these systems. CFD modelling proves to be a powerful tool to understand the hydrodynamic and (bio)-chemical processes in drinking water systems. If applied properly, accounting for the complex turbulent motions and validated by experiments, this tool leads to a better design of UV reactors, ozone systems and other systems dictated by hydraulics.

Lake Governance (Paperback): Velma I. Grover, Gail Krantzberg Lake Governance (Paperback)
Velma I. Grover, Gail Krantzberg
R1,375 Discovery Miles 13 750 Ships in 12 - 17 working days

The Lake Governance book will focus on comparative analysis of governance structures by examining policy, legal and institutional structures of current transboundary commissions to develop a common framework for good governance of transboundary lakes. Cooperation among nations sharing natural resources is important for sustainable use of the shared resources. Lakes contribute a big part to GDP in most of the countries and in some cases are also responsible for providing fisheries (for food, source of protein and livelihood). Climate change and associated risks and uncertainties add more complexity to the problems. This book will explore current water governance challenges, knowledge gaps and recommend a framework for good lake governance.

Andean Hydrology (Paperback): Diego A. Rivera, Alex Godoy-Faundez, Mario Lillo Saavedra Andean Hydrology (Paperback)
Diego A. Rivera, Alex Godoy-Faundez, Mario Lillo Saavedra
R1,387 Discovery Miles 13 870 Ships in 12 - 17 working days

This book describes the ecosystem of the Andean watersheds, covering the Californian valley, tropical Andes, and southern Andes. Case studies of the new methods and techniques used for hydrological research in the Andes are provided, and sustainability issues pertaining to Andean water resources are discussed in the context of climate change, social and economic issues, and public policy. Furthermore, the impact of economic development on the Andean ecosystem, specifically the effect on the water cycle and the water-energy-food nexus, are examined.

Membrane Technologies for Water Treatment - Removal of Toxic Trace Elements with Emphasis on Arsenic, Fluoride and Uranium... Membrane Technologies for Water Treatment - Removal of Toxic Trace Elements with Emphasis on Arsenic, Fluoride and Uranium (Paperback)
Alberto Figoli, Jan Hoinkis, Jochen Bundschuh
R2,054 Discovery Miles 20 540 Ships in 12 - 17 working days

Focuses on the application of membrane technologies in removing toxic metals\metalloids from water. Particular attention is devoted to the removal of arsenic, uranium, and fluoride. These compounds are all existing in the earth's crust at levels between two and five thousands micrograms per kg (parts per million) on average and these compounds can be considered highly toxic to humans, who are exposed to them primarily from air, food and water. In order to comply with the new maximum contaminant level, numerous studies have been undertaken to improve established treatments or to develop novel treatment technologies for removing toxic metals from contaminated surface and groundwater. Among the technologies available, applicable for water treatment, membrane technology has been identified as a promising technology to remove such toxic metals from water. The book describes both pressure driven (traditional processes, such as Nanofiltration, Reverse Osmosis, Ultrafiltration,etc) and more advanced membrane processes (such as forward osmosis, membrane distillation, and membrane bio-reactors) employed in the application of interest. Key aspect of this book is to provide information on both the basics of membrane technologies and on the results depending on the type of technology employed.

Drinking Water Quality Management from Catchment to Consumer (Paperback): Bob Breach Drinking Water Quality Management from Catchment to Consumer (Paperback)
Bob Breach
R2,810 Discovery Miles 28 100 Ships in 12 - 17 working days

Part of Water Quality Set - Buy all four books and save over 30% on buying separately! Drinking Water Quality Management from Catchment to Consumer is a best practice book that builds on the experience of water suppliers and experts across the world in order to provide a practical guide to help utilities improve the management of drinking water quality. It is based on the Water Safety Plan approach and the principles of the Bonn Charter for Safe Drinking Water, and is intended to complement and support other relevant publications particularly the WHO Water Safety Plan Manual. It has evolved from the work of The Bonn Network which is a global group of water suppliers originally established to develop and share best practice in drinking water quality management based on the Bonn Charter. The emphasis is on practical information "by operators for operators", learning from the experience of a range of water suppliers across the world. The book supports and encourages users to think through the best way for them to improve drinking water quality management taking account of local factors. It recognises that whilst water suppliers are central to the provision of good drinking water, this has to take place within a broader legal, institutional, and financial framework which is the responsibility of Government and others. It thus highlights the ways that water suppliers can work with a range of partners to ensure that all are committed to the same goal of good safe drinking water. Drinking Water Quality Management from Catchment to Consumer is an essential reference for water quality, laboratory and operational managers from water utilities around the world. It is also helpful to consultants working in this area and regulatory, health and municipal, and catchment management authorities. The book is of interest to academics working in the field of drinking water quality, and risk management and may be used on any courses aimed at managing drinking water quality.

Ecosystems and Integrated Water Resources Management in South Asia (Hardcover): E. R. N. Gunawardena, Brij Gopal, Hemesiri... Ecosystems and Integrated Water Resources Management in South Asia (Hardcover)
E. R. N. Gunawardena, Brij Gopal, Hemesiri Kotagama
R3,451 R2,847 Discovery Miles 28 470 Save R604 (18%) Ships in 12 - 17 working days

This book provides an ecosystem perspective in addressing the water resource management issues in the South Asian region. It argues that aspects such as sources of water, its distribution and users; land--water interrelations; drivers of change such as laws, policies and institutions; management of issues and technologies related to water supply; institutional set-up; economic instruments such as pricing, taxes, subsidies; and economics of ecosystem services are crucial. Climate changes, melting of glaciers and polar ice caps, rising sea level and the increased frequency of extreme events, have to be factored into integrated management of water resources. This book addresses some of these major issues related to aquatic ecosystems and focuses on three major aspects: (a) concepts related to ecosystems, ecosystem services and their linkages with water; (b) human impacts on ecosystems, particularly the aquatic ecosystems, and their assessment; and (c) the management, including policy, governance and economics. Comprising new theories, research and case studies, the book will be useful those concerned with water resource management -- professionals, students and researchers.

Stochastic Water Demand Modelling (Paperback): Mirjam Blokker Stochastic Water Demand Modelling (Paperback)
Mirjam Blokker
R2,580 Discovery Miles 25 800 Ships in 12 - 17 working days

Water quality processes in the drinking water distribution network are strongly influenced by the flow velocity and residence time of the water in the network. In order to understand how the water quality changes in the drinking water distribution network, a good understanding of hydraulics is required. Specifically in the periphery of the network, where customers are connected, the hydraulics can change rapidly. During the night time the water is almost stagnant and the residence time increases. In the morning, when everybody gets up and flushes the toilet and takes a shower, high flow velocities can occur. During the remainder of the day flow velocities are low. The stochastic endues model SIMDEUM was developed to simulate water use on a small time scale (1 s) and small spatial scale (per fixture). SIMDEUM enables a good model of flow velocities, residence times and the connected water quality processes in the water distribution network. Stochastic Water Demand Modelling: Hydraulics in Water Distribution Networks describes the requirements of hydraulics in water quality modelling and provides insight into the development of detailed residential and non-residential water demand models. The book illustrates the use of detailed demand models in water quality models with respect to the variation in residence times and the relation with particle accumulation and resuspension. The models are compared to measurements in several real drinking water distribution networks.

Off-Site Enhanced Biogas Production with Concomitant Pathogen Removal from Faecal Matter (Paperback): Joy Nyawira Riungu Off-Site Enhanced Biogas Production with Concomitant Pathogen Removal from Faecal Matter (Paperback)
Joy Nyawira Riungu
R1,480 Discovery Miles 14 800 Ships in 12 - 17 working days

Globally, 2.7 billion people are using onsite sanitation systems, particularly in low income, high density settlements (LIHDS) in urban areas of developing countries. However, treatment technologies to manage the faecal sludge (FS) generated from these systems are often not in place, leading to high risks for environmental and public health. The development of replicable and effective technologies for FS treatment is key in addressing this challenge. This research focused on development of an innovative FS stabilisation technology and addressed key constraints in anaerobic FS treatment: inadequate pathogen inactivation and limitations in biochemical energy recovery. The developed two-stage reactor system consists of an acidogenic reactor fed with mixtures of FS and market waste to facilitate pathogen inactivation, and a subsequent methanogenic plug-flow reactor for enhanced methane production. Due to its potential for application as an off-site FS treatment technology at any scale, receiving any type of faecal matter, collected from different types of sanitary systems, the system provides an option for FS stabilisation for LIHDS. Additionally, the research evaluated the limitations of sanitation provision in LIHDS, and proposes methods for creating an enabling environment for full-scale implementation of onsite systems. The presented results contribute to designing appropriate sanitation interventions in LIHDS.

Aerobic Wastewater Treatment Processes (Paperback): David F. Tilley Aerobic Wastewater Treatment Processes (Paperback)
David F. Tilley
R2,266 Discovery Miles 22 660 Ships in 12 - 17 working days

Aerobic Wastewater Treatment Processes: History and Development discusses the widely differing influences on the development of aerobic treatment such as water supply, toxic trade effluents, microscopy and population growth in urban areas. It covers the historical development of sewage treatment and the emergence of aerobic biological treatment from the early nineteenth century to the present day. The importance of water supply and the influence this had on the water-carriage system is examined, as is the consequent discharge of sewage into rivers. The factors which govern process selection and process development are discussed. There is a continued impetus to reduce land area, capital costs, running costs, and to optimise performance and process control. The discovery of the activated sludge process is detailed including the development, in the early 1900s, of many forms of this process. Industrial wastes were discharged to biological treatment systems and the impact of such pollutants is reviewed. The work of Royal Commissions, River Boards and the National Rivers Authority is summarised, and the advances in chemical analysis and "on-line" measurement of chemical quality characteristics. Later developments such as reed beds and the use of hybrid treatment systems are covered. Examples are included such as the "fixed film" activated sludge process which has found application for small communities in package form, and also for large-scale municipal treatment plants. Aerobic Wastewater Treatment Processes: History and Development is valuable reading for students of the following courses on CIWEM Dip examination, WITA and B Tech and Environmental Science and Civil Engineering.

Down to Earth - Solid waste disposal for low-income countries (Paperback): Mansoor Ali, Andrew Cotton, Ken Westlake Down to Earth - Solid waste disposal for low-income countries (Paperback)
Mansoor Ali, Andrew Cotton, Ken Westlake
R592 Discovery Miles 5 920 Ships in 12 - 17 working days

This book presents the findings of a Department for International Development (DFID) funded project. It has been written for policy-makers and professional staff of urban government, development agencies and non-government organizations in low-income countries. The book aims to help improve the poor practices of municipal solid waste management that prevail in many low-income countries - a subject that has received comparatively little attention to other aspects of infrastructure such as water supply and transport. It is a complex subject embracing waste collection, transfer, haulage and disposal and its impacts are wide, including for example, effects on environmental health, municipal finance and management, waste reuse, and informal sector employment.

The Economics of Industrial Water Use (Hardcover): Steven Renzetti The Economics of Industrial Water Use (Hardcover)
Steven Renzetti
R6,921 Discovery Miles 69 210 Ships in 12 - 17 working days

The Economics of Industrial Water Use presents an authoritative collection of the most important articles to have applied economic models and measurement techniques to the topic of industrial water use over the last thirty years. It includes an original introductory chapter which summarizes and critically assesses the literature on this important subject. These papers employ a range of modelling approaches including econometric estimation, linear programming, input-output models, non-market valuation and integrated river basin planning models. They also provide empirical evidence of the significant role played by economic forces in determining industrial water intake, discharge and recirculation. This comprehensive volume will be an indispensable reference source for those with an interest in water's role in industrial applications.

Modern Irrigation Technologies for Smallholders in Developing Countries (Paperback): Gez Cornish Modern Irrigation Technologies for Smallholders in Developing Countries (Paperback)
Gez Cornish
R400 Discovery Miles 4 000 Ships in 12 - 17 working days

Modern Irrigation Technologies reviews the experience of small holders with irrigation technologies under a range of diverse conditions in many different countries. Some people argue that modern irrigation technologies are the key to increased food production. However, projects introducing modern irrigation technologies in the developing world have often failed because the irrigation hardware, which has been developed for high-technology commercial agriculture, cannot be easily adapted for the use of the smallholder. The author identifies the pre-conditions relating to water availability, institutional support and economic opportunity that must be satisfied before small holders in developing countries can adopt irrigation methods and benefit from them. The circumstances in which modern technologies have been introduced are identified, and the relative success or otherwise of the initiatives are summarized. The book also contains a practical review of the range of irrigation hardware that is available and indicates the types of equipment that are more likely to meet the requirements of the smallholder sector. Modern Irrigation Technologies will be an invaluable guide to project workers, planners and small holders involved in planning and designing irrigation projects.

Freshwater Microplastics - Emerging Environmental Contaminants? (Hardcover, 1st ed. 2018): Martin Wagner, Scott Lambert Freshwater Microplastics - Emerging Environmental Contaminants? (Hardcover, 1st ed. 2018)
Martin Wagner, Scott Lambert
R1,960 Discovery Miles 19 600 Ships in 12 - 17 working days

This book is open access under a CC BY 4.0 license. This volume focuses on microscopic plastic debris, also referred to as microplastics, which have been detected in aquatic environments around the globe and have accordingly raised serious concerns. The book explores whether microplastics represent emerging contaminants in freshwater systems, an area that remains underrepresented to date. Given the complexity of the issue, the book covers the current state-of-research on microplastics in rivers and lakes, including analytical aspects, environmental concentrations and sources, modelling approaches, interactions with biota, and ecological implications. To provide a broader perspective, the book also discusses lessons learned from nanomaterials and the implications of plastic debris for regulation, politics, economy, and society. In a research field that is rapidly evolving, it offers a solid overview for environmental chemists, engineers, and toxicologists, as well as water managers and policy-makers.

WEF/WERF Study Quantifying Nutrient Removal Technology Performance (Paperback): Charles B Bott, Denny S Parker WEF/WERF Study Quantifying Nutrient Removal Technology Performance (Paperback)
Charles B Bott, Denny S Parker
R3,228 Discovery Miles 32 280 Ships in 12 - 17 working days

The Water Environment Research Foundation (WERF) Nutrient Challenge Research Program and the Water Environment Federation (WEF) cooperated in a comprehensive study of nutrient removal plants designed and operated to meet very low levels of effluent N and P. Both existing and new technologies are being adapted to meet requirements that are as low as 3 mg/L TN and 0.1 mg/L TP, and there is a need to define their capabilities and reliabilities in the real world situation of wastewater treatment plants. This effort focused on maximizing what can be learned from existing technologies in order to provide a database that will inform key decision makers about proper choices for both technologies and rationale bases for statistical permit writing. To this end, managers of 22 plants, 10 achieving low effluent TP, 9 achieving low effluent TN, and 3 achieving low effluent ammonia, were asked to provide 3 years of operational data that were analyzed using a consistent statistical approach. Technical papers were compiled for each plant including a summary of influent loading, process design and operating conditions, unusual events, upsets and anecdotes related to process operation, and the statistical summary of final effluent data that considered both process reliability and the permit limits applied. The first year of this effort culminated in a workshop held in Chicago at WEFTEC 2008 and the second year in a workshop held in Orlando at WEFTEC 2009. Technological conclusions that can be drawn from the study in terms of what can be learned by comparing the different nutrient removal processes employed at these 22 plants and several additional BNR facilities in Florida are described in joint manuscripts submitted by Parker et al (2009) and Bott et al (2009). In a parallel effort using the data and conclusions generated from this study, Neethling et al (2009) proposed a set of quantitative descriptors that attempt to define the nutrient removal performance in terms of effluent quality percentile statistics referred to as Technology Performance Statistics (TPSs). The TPSs were defined as three separate values representing the lowest, median, and reliably achievable performance (Neethling et al, 2009).

Diagnostic Tools to Evaluate Impacts of Trace Organic Compounds (Paperback): Jerome M. Diamond Diagnostic Tools to Evaluate Impacts of Trace Organic Compounds (Paperback)
Jerome M. Diamond
R3,228 Discovery Miles 32 280 Ships in 12 - 17 working days

With the recent advent of improved analytical and biomarker detection capabilities, a variety of organic chemicals have been found in trace amounts (Trace Organic Chemicals, TOrCs) in surface waters and fish tissue. TOrCs include pharmaceuticals, personal care products, surfactants, pesticides, flame retardants, and other organic chemicals, some with unknown modes of action or effects. Identifying or predicting ecological effects of TOrCs in typical aquatic multi-stressor situations is challenging, requiring a variety of epidemiological tools that together, can diagnose effects at multiple scales of ecological organization. Five objectives were addressed in this research: (1) develop and apply a procedure to prioritize which TOrCs are of most concern; (2) develop and test a conceptual site screening framework; (3) evaluate and test diagnostic approaches to identify potential risks due to TOrCs using various case studies; (4) develop a relational database and user interface with which the water resource community can enter, store, and search TOrC exposure data in the U.S.; and (5) foster partnerships and transfer knowledge gained in this research to the water quality community. TOrC fate, effects, and occurrence data were compiled in a database for over 500 organic chemicals based on over 100 published studies representing more than 50 organizations and 700 sites. Alternative risk-based prioritization processes and draft lists of high priority TOrCs were developed. A preliminary site screening and diagnostic framework was developed and evaluated using seven different case study sites. EPA's causal analysis (stressor identification) procedures, Canada's Environmental Effects Monitoring (EEM) procedure, the ecosystem model CASM (Comprehensive Aquatic System Model), and several other specialized diagnostic tools were used and evaluated. A relational database based on Tetra Tech's EDAS2 was developed using the Microsoft platform. The modified version of EDAS2, built on the EPA WQX data model, provides web-based data queries using a combination of tabular data for downloads and a visual map interface that allows the user to view, query, and select sites from the map having chemical or biological data. The database is not discussed in this report but can be accessed through WERF. This Final Report summarizes all other approaches used and results obtained in this research, discusses critical data gaps and other important uncertainties, and provides testable hypotheses and recommendations for Phase 2 testing and analyses.

Water Resources and Economic Development (Hardcover): R.Maria Saleth Water Resources and Economic Development (Hardcover)
R.Maria Saleth
R7,145 Discovery Miles 71 450 Ships in 12 - 17 working days

Including work by some of the world's leading economists, engineers, ecologists and social scientists, Water Resources and Economic Development is a unique collection due to its global perspectives and specific focus upon the recent experiences of the developing regions of Asia, Africa and Latin America. It explores important topics such as basin and regional development, irrigation and agricultural development, water supply, sanitation and health, legal and institutional issues, water pricing and water markets, and policy trends and emerging issues. This authoritative volume will be an invaluable source for students, researchers and policymakers and also for those who would like to be more informed in this key area of development studies.

Transforming Urban Water Supplies in India - The Role of Reform and Partnerships in Globalization (Hardcover): Govind Gopakumar Transforming Urban Water Supplies in India - The Role of Reform and Partnerships in Globalization (Hardcover)
Govind Gopakumar
R4,161 Discovery Miles 41 610 Ships in 12 - 17 working days

The absence of water supply infrastructure is a critical issue that affects the sustainability of cities in the developing world and the quality of life of millions of people living in these cities. Urban India has probably the largest concentration of people in the world lacking safe access to these infrastructures. This book is a unique study of the politics of water supply infrastructures in three metropolitan cities in contemporary India - Bangalore, Chennai and Kochi. It examines the process of change in water supply infrastructure initiated by notable Public Private Partnership's efforts in these three cities to reveal the complexity of state-society relations in India at multiple levels - at the state, city and neighbourhood levels. Using a comparative methodology, the book develops as understanding of the changes in the production of reform water policy in contemporary India and its reception at the sub-national (state) level. It goes on to examine the governance of regimes of water supply in Bangalore, Chennai and Kochi, and evaluates the role of the partnerships in reforming water supply. The book is a useful contribution to studies on Urban Development and South Asian Politics.

Utility Benchmarking and Regulation in Developing Countries (Paperback): Silver Mugisha Utility Benchmarking and Regulation in Developing Countries (Paperback)
Silver Mugisha
R2,242 Discovery Miles 22 420 Ships in 12 - 17 working days

Utility performance, especially in developing countries is still working toward the standard necessary to deliver best practice. Utility Benchmarking and Regulation in Developing Countries examines performance monitoring and regulation as a prominent efficiency enhancement tool and clarifies many of the unknowns regarding the design and approach surrounding the area of utility management. Principles and practices are linked in a way that is informative and accessible, highlighting the challenges facing those who are trying to improve performance in the water sector. Operational settings are complex and unpredictable in developing countries due to inadequate infrastructure planning and this book makes clear which systems work best in these situations. Utility Benchmarking and Regulation in Developing Countries discusses performance monitoring in the critical areas of utility management that achieve sustainable performance goals: Performance development planning Modes of performance monitoring Provocative approaches to incentives creation Monitoring through high incentive plans Customer relations monitoring Pro-poor oriented monitoring Careful use of partial performance indicators Proposed indicators for assessing governance incentives A case study on the National Water and Sewerage Corporation, Uganda is included in the book detailing the difficulties in discerning performance progress based on partial performance indicators. It underlines disparities in basing performance conclusions on partial performance indicators on one hand and aggregate analysis using modern benchmarking toolkits on the other. This is an excellent handbook for utility monitors or regulators whose primary duty is to oversee performance management. It is a valuable resource for decision-makers, analysts, and policy-makers and can be used in capacity-building programs (both in-house and in universities) around the world.

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