Bøger af AWWA

"The purpose of this manual is to educate and inform interested backflow prevention and cross-connection control program managers and administrators about the most current practices; to explore advantages and disadvantages of various policies regarding backflow prevention programs; and to provide thoughtful and meaningful topics for consideration when developing, implementing, and managing programs"--

"This operational guide to ANSI/AWWA Standard J100-21 Risk and Resilience Management of Water and Wastewater Systems incorporates new threat guidance and updated versions of the nonmandatory appendices into a guidance document that aligns with the updated standard. This guide is aimed at giving background and purpose to the process of completing a J100 analysis, complete with a case study as an example. The threats covered include contamination, cyber, flood, hurricane, ice storms, earthquakes, tornadoes, and wildfires"--

Revised edition of: Flexible-membrane covers and linings for potable water reservoirs, 3rd ed. Denver, CO: American Water Works Association, [2000].

"Hydraulic models are widely used to help solve engineering and operational problems in water distribution systems. To ensure that a model accurately represents a real system, model results are compared with physical measurements over a range of conditions. This book will help the modeler identify and mitigate the differences between field data and model results. It includes an introduction to calibration; suggested procedures; data requirements and collection guidelines; real-time modeling and continuous calibration; water quality calibration; and energy management issues"--

"This book is intended for utilities and engineers who periodically design and construct water supply wells, as opposed to books designed for well drilling, voluminous well books that cover vast territory and details or highly theoretical books for course taught at the college level. This book is intended to help the reader understand what to expect from well drilling, including the equipment, terminology, and design concepts"--

"This M3 update is the result of Health, Safety, and Environmental (HSE) Committee efforts to provide general but broad guidance to water providers as they develop health and safety programs. The audience for this manual is primarily utility management and other employees with assigned and overall safety responsibilities (e.g., utility safety managers, supervisors)"--

"City leaders, Tucson Water employees, scientists, engineers, consultants, academics and many others worked together to not only solve the original problems but also to regain the trust of the public that had been destroyed by smelly, yellow, orange, brown and red water pouring out of home faucets. The lessons learned in Tucson about how to solve a water quality and treatment disaster can be applied to other situations where the faith and trust of the public have been lost"--

"Directed to engineers and operators of ED and EDR systems, this manual provides detailed background information on ED and EDR as they relate to water treatment processes. The manual explains process principles, equipment information, electrodialysis technology, and system design. Information on water chemistry is included to enhance understanding of water processing"--

Here is a complete introduction and guide to UV technologies for the disinfection of drinking water. This book describes the powerful capabilities of ultraviolet light as a water disinfectant. It explains in detail UV how UV inactivates and makes harmless microbes by altering their DNA. It tells you how UV is measured and dosed to inactivate any type of microbe in your source water. You will understand how UV can fit into your specific treatment scheme, whether yours is a large, medium or small system using filtered or unfiltered water, an uncovered reservoir, groundwater, or surface water. The book describes the effects of turbidity, algae, and other water quality issues on UV performance, as well as pretreatment that may be needed prior to UV, such as filtration or chlorine reduction.You can use The Ultraviolet Disinfection Handbook to help you plan, purchase, install, and operate a UV installation. The book provides the specific information you need to know about UV equipment: major classes of UV water treatment systems, types of UV lamps, UV sensors, sleeves, power needs, and control equipment. In addition, chapters provide complete guidance and information on key design issues, including UV transmittance; equipment fouling and aging; equipment location, layout, and site constraints; flow and hydraulics; and electric power. It also explains USEPA requirements for validation of UV reactor performance prior to startup, plus operational requirements. You also will find helpful information on UV cost estimating.

The purpose of this handbook is to provide drinking water and water reuse professionals with information that can be used to answer the question, "If my system has a contaminant approaching or above the maximum contaminant level, is ion exchange a feasible technology and if so, what would be the basic characteristics of the ion exchange system?" >

Contents include the importance of gas transfer operations in water treatment including a definition of aeration; the physical mechanism of gas transfer, including Henry's Law Constants and information regarding blower selection; the principles and applications for gas addition; and the principles and applications for gas removal.

"This manual presents the general practice for selection and installation of manual and automated knife gate valves for use in water and waste-water applications. This document is intended to provide information and guidance on typical knife gate valves and their intended application"--