Impact of Distribution System Water Quality on Disinfection Efficacy

Impact of Distribution System Water Quality on Disinfection Efficacy
Author: Hé́lène Baribeau
Publisher: American Water Works Association
Total Pages: 324
Release: 2005
Genre: Water
ISBN: 1583214100

Assesses the impact of dynamic water quality conditions in the distribution system on the inactivation of microorganisms in bulk water. Addresses questions about the usefulness of maintaining a secondary residual and the target level to be maintained. Bridges research related to distribution system water quality with that of microbial inactivation.

Aqua

Aqua
Author:
Publisher:
Total Pages: 972
Release: 1996
Genre: Water-supply
ISBN:

Formation and Decay of Disinfection By-products in the Distribution System

Formation and Decay of Disinfection By-products in the Distribution System
Author:
Publisher: American Water Works Association
Total Pages: 356
Release: 2006
Genre: Water
ISBN: 1583214631

The goal of this project was to understand the formation and decay of selected DBPs in full-scale distribution systems focusing on the four THMs and the nine HAAs, as well as individual THM and HAA species. Because of its critical nature, NDMA was also included. The project objectives were: evaluate the critical factors that affect THM and HAA behavior in distribution systems; determine the fate and behavior of NDMA in distribution systems; evaluate the effect of pipe material and diameter on the fate of DBPs in distribution systems; examine the effect of storage reservoirs / tanks and booster chlorination stations on THM, HAA and NDMA concentrations; evaluate the changes in DBP concentrations and speciation when a system seasonally switches from chloramines to free chlorine to limit potential nitrification episodes....

Water Pollution XIV

Water Pollution XIV
Author: S. Hernández
Publisher: WIT Press
Total Pages: 349
Release: 2018-08-21
Genre: Technology & Engineering
ISBN: 1784662615

Water pollution problems are of continued importance around the world, with an impact on both populated areas and the environment. This volume consists of papers presented at the 14th International Conference in the series of Monitoring, Modelling and Management of Water Pollution. The environmental problems caused by the increase of pollutant loads discharged into natural water bodies requires the formation of a framework for regulation and control. This framework needs to be based on scientific results that relate pollutant discharge with changes in water quality. The results of these studies allow industry to apply more efficient methods of controlling and treating waste loads, and water authorities to enforce appropriate regulations regarding this matter. Environmental problems are essentially interdisciplinary. Engineers and scientists working in this field must be familiar with a wide range of issues including the physical processes of mixing and dilution, chemical and biological processes, mathematical modelling, data acquisition and measurement, to name but a few. In view of the scarcity of available data, it is important that experiences are shared on an international basis. Thus, a continuous exchange of information between scientists from different countries is essential. Topics covered include: Water contamination; Monitoring, modelling and forecasting; Water management; Wastewater management; Groundwater and aquifers; Flood damage; Freshwater quality; Coastal and offshore pollution; Health risk studies; Agricultural contamination; Industrial pollution; Water reuse; Emerging technologies; Socio-economic-political consequences; Population and climate change; Education and training.

Waterborne Gastrointestinal Disease Outbreak Detection

Waterborne Gastrointestinal Disease Outbreak Detection
Author:
Publisher: American Water Works Association
Total Pages: 310
Release: 2001
Genre: Gastrointestinal system
ISBN: 1583211691

This manual provides guidance to water utilities and public health agencies, showing how to set up locally responsive water surveillance programs. It examines two major settings which surveillance must address and their appropriate responses: variations occurring in plant operation or distribution systems, and the detection of disease in the community. A proactive approach is described, involving watershed monitoring, record maintenance, and planning for emergencies. Material on public health recommends augmenting laboratory-based notifiable disease surveillance and creating or improving an emergency room-based sentinel system. A communications and action plan in case of outbreak is outlined. Emde is affiliated with the Northern Alberta Provincial Laboratory of Public Health, Canada. This work lacks a subject index. c. Book News Inc.

Water Quality Indices

Water Quality Indices
Author: Tabassum Abbasi
Publisher: Elsevier
Total Pages: 375
Release: 2012-03-10
Genre: Technology & Engineering
ISBN: 0444543058

This book covers water quality indices (WQI) in depth – it describes what purpose they serve, how they are generated, what are their strengths and weaknesses, and how to make the best use of them. It is a concise and unique guide to WQIs for chemists, chemical/environmental engineers and government officials. Whereas it is easy to express the quantity of water, it is very difficult to express its quality because a large number of variables determine the water quality. WQIs seek to resolve the difficulty by translating a set of a large number of variables to a one-digit or a two-digit numeral. They are essential in communicating the status of different water resources in terms of water quality and the impact of various factors on it to policy makers, service personnel, and the lay public. Further they are exceedingly useful in the monitoring and management of water quality. With the importance of water and water quality increasing exponentially, the importance of this topic is also set to increase enormously because only with the use of indices is it possible to assess, express, communicate, and monitor the overall quality of any water source. - Provides a concise guide to WQIs: their purpose and generation - Compares existing methods and WQIs and outlines strengths and weaknesses - Makes recommendations on how the indices should be used and under what circumstances they apply