Flooding in urbanized areas has become a very important issue around the world. The level of service (or performance) of urban drainage systems (UDS) degrades in time for a number of reasons. In order to maintain an acceptable performance of UDS, early rehabilitation plans must be developed and implemented. In developing countries the situation is serious, little investment is done and there are smaller funds each year for rehabilitation. The allocation of such funds must be "optimal" in providing value for money. However this task is not easy to achieve due to the multicriteria nature of the rehabilitation process, taking into account technical, environmental and social interests. Most of the time these are conflicting, which make it a highly demanding task. This book introduces a framework to deal with multicriteria decision making for the rehabilitation of urban drainage systems, and focuses on several aspects such as the improvement of the performance of the multicriteria optimization through the inclusion of new features in the algorithms and the proper selection of performance criteria. The use of Genetic Algorithms, parallelization and application in countries like Brazil, Colombia and Venezuela are treated in this book.

In order to properly plan, design, and operate groundwater resources projects, it is necessary to measure - over time or distance - pertinent groundwater variables such as drawdown and discharge in the field. Applied Hydrogeology for Scientists and Engineers shows how to assess and interpret these data by subsurface geological setup and processing. The book helps readers estimate relevant groundwater parameters such as storativity, transmissivity, and leakage coefficient.
The text addresses many interrelated disciplines such as geology, hydrology, hydrogeology, engineering, petroleum geology, and water engineering. Traditional and current models for application are presented. One of the unique features of the book is the inclusion of new and previously unpublished ideas, concepts, techniques, approaches, and procedures developed by the author. Among these are hydrogeophysical concepts, slope matching techniques, volumetric approach solution for complicated groundwater flows, non-Darcian flow law applications, aquifer sample functions, dimensionless-type straight line methods, non-linear flow-type curves, discharge calculations from early time-drawdown data, storage coefficient estimation procedure for quasi-steady state flow, and much more. The pitfalls in aquifer test analysis are also detailed. Fractured medium flow adds yet another dimension to the book. Each method is supplemented by actual field data applications from worldwide case studies.
Applied Hydrogeology for Scientists and Engineers covers the topics of groundwater reservoirs, the evaluation of aquifer parameters, aquifer and flow properties, flow properties and bore hole tests, aquifer tests in porous and fractured media, well hydraulics, groundwater flow and aquifer tests, and field measurements and their interpretations.
This new reference also works well as a post-graduate textbook on the subject. Applied Hydrogeology for Scientists and Engineers expands the reader's knowledge by providing valuable information not found in any other publication.

This book presents a comprehensive method by which to determine the proportionate share of the costs and revenues generated by the development of new water, wastewater, and stormwater facilities. It presents a rational, legally defensible approach to assessing charges based on the use of new and existing facilities to support new system development. Written by a consultant who has helped hundreds of communities deal with how to pay for growth, the book is designed for all communities presently engaged in calculating and administering charges for new development, as well as those planning for future growth.

Written by renowned experts in the field, this book assesses the status of groundwater models and defines models and modeling needs in the 21st century. It reviews the state of the art in model development and application in regional groundwater management, unsaturated flow/multiphase flow and transport, island modeling, biological and virus transport, and fracture flow. Both deterministic and stochastic aspects of unsaturated flow and transport are covered. The book also introduces a unique assessment of models as analysis and management tools for groundwater resources. Topics covered include model vs. data uncertainty, accuracy of the dispersion/convection equation, protocols for model testing and validation, post-audit studies, and applying models to karst aquifers.

Understanding the issues that have been encountered at other sites, and the steps that have led to successful resolution of these issues, can provide great help to those considering, planning, or implementing new groundwater recharge projects. Recent technical advances and operational experience have demonstrated that well recharge is a feasible and cost effective method of artificially recharging natural aquifers. This practical guide reviews the technical constraints and issues that have been addressed and resolved through research and experience at many sites. The book presents aquifer storage recovery (ASR) technology and traces its evolution over the past 25 years in the United States. Procedures for groundwater recharge are presented, and selected case studies are examined. Drinking water quality standards and conversion factors are provided in the appendix for easy reference.

Laboratory physical models are a valuable tool for coastal engineers. Physical models help us to understand the complex hydrodynamic processes occurring in the nearshore zone and they provide reliable and economic engineering design solutions.This book is about the art and science of physical modeling as applied in coastal engineering. The aim of the book is to consolidate and synthesize into a single text much of the knowledge about physical modeling that has been developed worldwide.This book was written to serve as a graduate-level text for a course in physical modeling or as a reference text for engineers and researchers engaged in physical modeling and laboratory experimentation. The first three chapters serve as an introduction to similitude and physical models, covering topics such as advantages and disadvantages of physical models, systems of units, dimensional analysis, types of similitude and various hydraulic similitude criteria applicable to coastal engineering models.Practical application of similitude principles to coastal engineering studies is covered in Chapter 4 (Hydrodynamic Models), Chapter 5 (Coastal Structure Models) and Chapter 6 (Sediment Transport Models). These chapters develop the appropriate similitude criteria, discuss inherent laboratory and scale effects and overview the technical literature pertaining to these types of models. The final two chapters focus on the related subjects of laboratory wave generation (Chapter 7) and measurement and analysis techniques (Chapter 8).

This book has grown from Intermediate Technology's field experiences with micro-hydro installations and covers operation and maintenance, commissioning, electrical power, induction generators, electronic controllers, management, and energy surveys.

This manual provides the procedures and data necessary to calculate discharges over and through hydraulic structures.
Contents: Introduction; Discharge measurement structures; Discharge relationships and component head losses for hydraulic structures; Headlosses in closed conduit systems flowing full; Analysis of flow conditions and hydraulic design for river diversion in closed conduits; Flow through and over rockfill structures

Handbook of Project Finance for Water and Wastewater Systems provides an easy-to-read guide for gaining an understanding of the myriad options available for financing water and wastewater projects and how to evaluate which options are most appropriate.
This crucial reference delineates a basic system for comparing the actual costs of various programs. The book describes the seven major factors that can dramatically affect user charges. It then analyzes each funding alternative in terms of these common cost factors. No other book provides such an understandable framework for comparing project costs and their ultimate impact on ratepayer charges.
Handbook of Project Finance for Water and Wastewater Systems is an essential book for utility managers, consultants, engineers, regulators, environmental attorneys, and planners.
Features
Addresses the seven major factors that affect project costs
Easy to read
Presents easily comparable options

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

Manual of Small Public Water Supply Systems presents current concepts and practices affecting water treatment, financing, management, community involvement in water supply, institutional support, and development of human resources for improved operations and management of water supplies. Information on ground water, surface water, and SDWA requirements is also provided. In short, everything you need to run your small water treatment facility can be found in this book. Material is presented in a thorough, easy-to-read format and a complete bibiliography is included. Fully illustrated, Manual of Small Public Water Supply Systems will soon be dog-eared with use.

In this work, practical recommendations are given for sound dike design. Particular emphasis is placed on design, management and maintenance. Coverage includes the assessment of soil properties and different types of loadings on a dike. These guidelines are primarily aimed at engineers who are directly involved in the design of river dike improvements. In this book practical recommendations are given with which a sound design of a dike can be obtained. Instructions on design, management and maintenance are an important part of these guidelines. In this respect, the assessment of the soil properties is treated including the required investigations for this. The different types of loadings on a dike are also dealt with. Also a number of methods by means of which the loading and the strength are weighed against each other are presented in these guidelines. In the last chapter incalculable aspects are given that are of importance for the construction of flood defences.

Earth dams are the most common impoundment structures, with stringent requirements imposed on their design and construction. Modern design require accurate static and dynamic computations based on thorough analysis of stress-strain conditions, as detailed in this handbook (translated from the Russia

This volume provides useful insight on the differing approaches to water quality issues and the diversity of strategies in water quality management worldwide. This book is divided into two parts: The first part deals with aspects of water quality in various countries and several remedies are suggested. Also considered are theoretical and practical topics including policy and resource management. The second part discusses water as a world problem in both developed and developing countries. Aspects of the problem relating to seas, deserts, forests and freshwater are examined with reference to planning, development and environmental impact analysis.

Prediction of microbial transport distances are usually based on the sticking efficiency, a parameter in the classical colloid filtration theory. This parameter represents the interaction between colloid and collector surfaces resulting in deposition. According to the theory, the sticking efficiency is invariable when physico-chemical characteristics of aquifer media are homogeneous. However, many research results have indicated variations within bacterial strains. In this research, the transport of Escherichia Coli in saturated quartz columns were conducted in the laboratory. The objectives were to characterise the distribution of sticking efficiency, measure low sticking efficiency values of cells, and to develop a methodology to measure minimum values of sticking efficiencies within bacterial sub-populations. Also, the work assesses the contribution of phenotypic and genotypic characteristics of Escherichia coli on their attachment to quartz grains.

A community-sensitive approach to the developing world's water supply; for students, trainers and engineers alike. Deals with disease and problems of water in the house and at the source, waste disposal, and education and training.

This book is the translation of a Dutch report on a study on concrete block revetments on dike slopes, published in 1984 in Dutch. It is primarily for technical staff involved in design and management, water boards, provincial public works departments and The Netherlands Public Works Department.

Produced for the International Association for Hydraulic Research, this monograph covers fluctuating and mean hydrodynamic forces, hydrodynamic forces on high-head gates, and hydrodynamic forces on low-head gates i.e. only the forces induced by flow incident or past the structure.

This is a handbook for policy makers and environmental managers in water authorities and engineering companies engaged in water quality programmes, especially in developing countries. It is also suitable for use as a textbook or as training material for water quality management courses. It is a companion volume to Water Quality Assessment and Water Quality Monitoring.

First published in 1990. Routledge is an imprint of Taylor & Francis, an informa company.

A companion volume to Drainage Details, the two volumes provide a compact and exact source of reference dealing with the drainage of buildings from sanitary appliance through the underground drainage network, to the final outfall.

Valuable for consultants and regulators...Dream is a useful tool for basic field work, including the first-cut evaluation of remediation design. Ground water professionals will find Dream to be ideal for estimating actual flow conditions when information on aquifer properties is limited. Flow nets, streamline plots, and capture zone maps are easily produced by contouring Dream's output files. Maps of head, drawdown, and ground water velocity are equally simple to create. These provide an uncomplicated method for estimating both direction and magnitude of flow, and the areal extent of the well's influence. This must-have volume is valuable for hydrologists, regulators, ground water professionals, students, professors, and consultants. This work is a valuable teaching tool for principles of subsurface hydrology. It is easy-to-use and illustrates hydrologic concepts, pumping schemes, remediation schemes, etc. The importance of fundamental aquifer properties can be easily explored, at both the graduate and undergraduate levels.

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

This study, conducted in Kenya, gives the first insight into the performance of a constructed treatment wetland receiving pulp and paper mill wastewater in the tropics. The wetland effectively removed organic matter, suspended solids, phenols and nutrients. BOD and phenols reduction rates are reported for the first time. Design parameters and guidelines for the set-up and maintenance of a full-scale wetland are recommended. The study concludes that integrating a full-scale wetland, as a tertiary stage with the existing treatment ponds would significantly improve the quality of water in River Nzoia downstream of the effluent discharge. This is a valuable resource book for scientists, managers and students in the field of wetland ecology, water and environmental management.

A comprehensive and up-to-date account of filtration in solid-liquid separation processes, with a sharp focus on the influence of pro-cess variables on performance and specific applications is pre-sented in this volume. With contribu-tions from researchers with significant industrial experi-ence, as well as by senior academics, this publication fea-tures a deep bed filtration overview with informa-tion on mathematical modeling and application in wastewater treat-ment. Pre-treatment filtration techniques such as cartridge filters, pre-coat filters and micro screening are included. Membrane filtration processes to remove dis-solved and suspended solids for the recovery of valuable ma-terials and the provision of high quality water are covered. Sludge de-watering methods such as centrifuga-tion, and vacuum and pressure filtration are described. Application status data, tables, figures and diagrams are also included. This volume is of special interest to practicing engineers and technolo-gists dealing with treatment problems requiring filtration solu-tions and to graduate students in environmental engineering.