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Reduction of Pathogens, Indicator Bacteria, and Alternative Indicators by Wastewater Treatment and Reclamation Processes

2005-04-30 Science
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Release : 2005-04-30
Genre : Science
Kind : eBook
Book Rating : 307/5 ( reviews)

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Book Synopsis Reduction of Pathogens, Indicator Bacteria, and Alternative Indicators by Wastewater Treatment and Reclamation Processes by : Joan B. Rose

Download or read book Reduction of Pathogens, Indicator Bacteria, and Alternative Indicators by Wastewater Treatment and Reclamation Processes written by Joan B. Rose. This book was released on 2005-04-30. Available in PDF, EPUB and Kindle. Book excerpt: In wastewater reclamation systems, microbiological monitoring is conducted to ensure that the users of reclaimed water are exposed to minimal risks from exposure to pathogens. Typically, utilities rely on the use of process controls to remove or inactivate pathogens. Routine monitoring of indicator organisms is conducted to evaluate overall process performance and for regulatory compliance. However, the effectiveness of individual treatment processes for removal of pathogens is dependent on process variables. This project was conducted to compare the effectiveness of biological treatment, filtration, and disinfection for removal of bacterial and viral indicators, enteric viruses, and protozoan pathogens. Six full-scale treatment facilities were each sampled a minimum of four times over a one year period. The relative impacts of loading conditions, process design, and operating parameters on the removal/inactivation of a suite of nine microbial species (bacteria, coliphages, enteric viruses, and protozoan pathogens) was evaluated. Bacterial removal was consistent for all types of biological systems, however, increased virus removal was associated with biological nutrient removal and nitrification processes. Parasite removal was highly variable. The effectiveness of filtration was impacted most by the use of upstream chemicals (either chlorine or coagulant chemicals). Chlorine disinfection was more effective in cases where ammonia levels were low (biological nutrient removal or nitrification facilities). Infectivity assays for protozoan pathogens suggest that the proportion of infective cysts or oocysts increases with increasing level of treatment.

Chemical Water and Wastewater Treatment VIII

2004-11-01 Science
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Release : 2004-11-01
Genre : Science
Kind : eBook
Book Rating : 68X/5 ( reviews)

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Book Synopsis Chemical Water and Wastewater Treatment VIII by : Hermann H. Hahn

Download or read book Chemical Water and Wastewater Treatment VIII written by Hermann H. Hahn. This book was released on 2004-11-01. Available in PDF, EPUB and Kindle. Book excerpt: In the wake of the Millennium Declaration and the Johannesburg resolutions, many countries have begun to address or re-write their policies regarding water supply and wastewater disposal. The goal is to provide high-quality drinking-water for more people and to safely dispose of spent waters from a large portion of the population than today. This book, as its predecessors, provides information and technical solutions to accomplish this mammoth task. It is the outcome of collective experience and know-how exchanged between experts in the field of water technology from all over the world: from the Americas, from central and southern Africa, from Europe and from different parts of Asia. The Chemical Water and Wastewater Treatment Series provides authoritative coverage of the key current developments in the chemical treatment of water and wastewater in theory or practice and related problems such as sludge production and properties, and the reuse of chemicals and chemically-treated waters and sludges. Chemical Water and Wastewater Treatment VIII is a valuable resource for managers, scientists, plant operators and others interested in chemical water and wastewater treatment technology.

Wastewater Treatment and Reuse Theory and Design Examples, Volume 2:

2017-11-22 Technology & Engineering
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Release : 2017-11-22
Genre : Technology & Engineering
Kind : eBook
Book Rating : 749/5 ( reviews)

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Book Synopsis Wastewater Treatment and Reuse Theory and Design Examples, Volume 2: by : Syed R. Qasim

Download or read book Wastewater Treatment and Reuse Theory and Design Examples, Volume 2: written by Syed R. Qasim. This book was released on 2017-11-22. Available in PDF, EPUB and Kindle. Book excerpt: This book will present the theory involved in wastewater treatment processes, define the important design parameters involved, and provide typical values of these parameters for ready reference; and also provide numerical applications and step-by-step calculation procedures in solved examples. These examples and solutions will help enhance the readers’ comprehension and deeper understanding of the basic concepts, and can be applied by plant designers to design various components of the treatment facilities. It will also examine the actual calculation steps in numerical examples, focusing on practical application of theory and principles into process and water treatment facility design.

Elimination of Micro-organisms by Water Treatment Processes

2010-05-14 Science
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Release : 2010-05-14
Genre : Science
Kind : eBook
Book Rating : 735/5 ( reviews)

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Book Synopsis Elimination of Micro-organisms by Water Treatment Processes by : Wim A. M. Hijnen

Download or read book Elimination of Micro-organisms by Water Treatment Processes written by Wim A. M. Hijnen. This book was released on 2010-05-14. Available in PDF, EPUB and Kindle. Book excerpt: Special Offer: KWR Drinking Water Treatment Set - Buy all five books together and save a total £119! The overall aim of Elimination of Micro-organisms by Water Treatment Processes is to present default values for the micro-organisms elimination or inactivation credit of universally used processes in water treatment (MEC or MIC). The growing interest in Quantitative Microbial Risk assessment (QMRA) for safe drinking water requires such data. These MEC or MIC values have been calculated from research on elimination of viruses, bacteria and bacterial spores and protozoa (oo)cysts (Cryptosporidium and Giardia) by these treatment processes published in the international literature. The data have been selected on the base of different quality criteria related to information on applied experimental conditions and used methods. Furthermore the studies have been categorized on base of their similarities with ‘real world’ conditions (selected micro-organisms, scale and conditions of the tested processes). The international literature data revealed a high variation in elimination. The major parameters and process control parameters affecting elimination are described. This new edition describes the state-of-the-art progress in research on conventional treatment, coagulation and flocculation, rapid granular filtration, slow sand filtration and UV disinfection. Visit the IWA WaterWiki to read and share material related to this title: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/WaterbornePathogens

Wastewater Blending

2005 Technology & Engineering
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Release : 2005
Genre : Technology & Engineering
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Wastewater Blending by : United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment

Download or read book Wastewater Blending written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt:

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