Author: Publisher:
ISBN:
Category : Bacterial growth
Languages : en
Pages : 72
Book Description
Control of Biofilm Growth in Drinking Water Distribution Systems
Author: Control of Biofilm Growth in Drinking Water Distribution Systems
Author: DIANE Publishing CompanyPublisher: DIANE Publishing
ISBN: 9780788106446
Category :
Languages : en
Pages : 66
Book Description
Describes the types of organisms often present in drinking water distribution system biofilms, how biofilms are established and grow, the public health problems associated with having biofilms in the distribution system, and tools that water treatment personnel can use to help control biofilm growth. Glossary of terms, and list of additional resources. Charts, tables and photos.
Control of Biofilm Growth in Drinking Water Distribution Systems
Author: Seminar Publication
Author: U.S. Environmental Protection AgencyPublisher: BiblioGov
ISBN: 9781294244479
Category :
Languages : en
Pages : 72
Book Description
The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.
Microbial Growth in Drinking Water Supplies
Author: Dick van der KooijPublisher: IWA Publishing
ISBN: 1780400403
Category : Science
Languages : en
Pages : 484
Book Description
Maintaining the microbial quality in distribution systems and connected installations remains a challenge for the water supply companies all over the world, despite many years of research. This book identifies the main concerns and knowledge gaps related to regrowth and stimulates cooperation in future research. Microbial Growth in Drinking Water Supplies provides an overview of the regrowth issue in different countries and the water quality problems related to regrowth. The book assesses the causes of regrowth in drinking water and the prevention of regrowth by water treatment and distribution. Editors: Dirk van der Kooij and Paul W.J.J. van der Wielen, KWR Watercycle Research Institute, The Netherlands
Prevention and Monitoring of Biofilm Formation in Drinking Water Distribution Systems
Author: Fahimeh BimakrPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
[Truncated] Biofilm formation in drinking water distribution systems (DWDSs) causes detrimental impacts on water quality and infrastructure. Biofilms can also act as a reservoir for pathogens, and are thus of public health concern. To discourage biofilm growth in DWDSs, antimicrobial agents (disinfectants) including chlorine, chloramines and ozone are used. However, these chemicals produce harmful disinfection by-products, many of which are toxic and carcinogenic, and hence their formation should be minimised. The challenge to maintain appropriate disinfection and to avoid unwanted effects of biofilm formation in DWDSs requires the development of new technologies for efficient disinfection and microbial control. Biofilm formation is affected by the type of pipe wall material, especially its surface characteristics, including roughness, surface energy and biological affinity. Pipe materials may also release substances that enhance or inhibit biofilm formation, and so influence the presence and persistence of microbial pathogens. A number of nanomaterials having antimicrobial properties have been proposed for use in water treatment. Moreover, microstructured surfaces and other surface coatings have also been reported to inhibit biofilm formation. In this study a number of polymers of different hydrophobicity including high density polyethylene (HDPE), polytetrafluoroethylene (PTFE) and nylon, with and without embedded copper, as well as a nanomaterial (carbon nanotubes) and marine paint (Hempel X3) were tested for their effects on biofilm formation in a laboratory scale pipe rig containing water from a water supply reservoir (Mundaring Weir, Perth, Western Australia), and compared with the traditional pipe materials stainless steel and concrete. Microbial growth on the tested materials was measured by counting DAPI-stained cells using epifluorscence microscopy, flow cytometry, heterotrophic plate agar, and an ATP assay for measuring cellular activity. Biofouling on all tested materials was detected using all four methods (ATP assay, epifluorescence microscopy, flow cytometry and colony counting) as rapidly as 1 h following installation of the material into the laboratory pipe rig. The results showed that none of the tested materials or coatings showed superior performance in preventing biofilm formation relative to stainless steel or concrete.
Microbial Quality of Water Supply in Distribution Systems
Author: Edwin E. GeldreichPublisher: CRC Press
ISBN: 1000157555
Category : Technology & Engineering
Languages : en
Pages : 516
Book Description
Hidden problems, buried deep in the pipe networks of water distribution systems, are very serious potential threats to water quality. Microbial Quality of Water Supply in Distribution Systems outlines the processes and issues related to the degradation of water quality upon passage through networks of pipes, storage reservoirs, and standpipes on its way to the consumer. The risks associated with biofilm accumulation, bacteria, and other contaminants are discussed in great detail. In addition to its excellent microbiological coverage of organisms in drinking water and biofilms in distribution systems, Microbial Quality of Water Supply in Distribution Systems provides clear treatments of the technical and public communication issues most commonly affecting the quality of water and water supply systems. The inclusion of numerous case histories in this new book makes it a complete reference source for anyone concerned with water quality and water distribution systems.
Factors Influencing Biofilm Growth in Drinking Water Distribution Systems
Author: Anne Kosteczeko CamperPublisher:
ISBN:
Category : Biofilms
Languages : en
Pages : 178
Book Description
Drinking Water Microbiology
Author: Gordon A. McFetersPublisher: Springer Science & Business Media
ISBN: 1461244641
Category : Technology & Engineering
Languages : en
Pages : 508
Book Description
The microbiology of drinking water remains an important worldwide concern despite modem progress in science and engineering. Countries that are more technologically advanced have experienced a significant reduction in water borne morbidity within the last 100 years: This reduction has been achieved through the application of effective technologies for the treatment, disinfec tion, and distribution of potable water. However, morbidity resulting from the ingestion of contaminated water persists globally, and the available ep idemiological evidence (Waterborne Diseases in the United States, G. F. Craun, ed. , 1986, CRC Press) demonstrates a dramatic increase in the number of waterborne outbreaks and individual cases within the United States since the mid-1960s. In addition, it should also be noted that the incidence of water borne outbreaks of unknown etiology and those caused by "new" pathogens, such as Campylobaeter sp. , is also increasing in the United States. Although it might be debated whether these increases are real or an artifact resulting from more efficient reporting, it is clear that waterborne morbidity cannot be ignored in the industrialized world. More significantly, it represents one of the most important causes of illness within developing countries. Approxi mately one-half the world's population experiences diseases that are the direct consequence of drinking polluted water. Such illnesses are the primary cause of infant mortality in many Third World countries.
Biofilms in Drinking Water
Author: L Cia Chaves Sim EsPublisher: LAP Lambert Academic Publishing
ISBN: 9783848413508
Category :
Languages : en
Pages : 272
Book Description
The provision of safe drinking water (DW) is a top priority issue in any civilized society. The main challenge to the DW industry is to deliver a product that is microbiologically and chemically safe, aesthetically pleasing and adequate in quantity and delivery pressure. The DW that leaves a treatment station has quality, but its quality decreases along the drinking water distribution systems (DWDS). It is well known that biofilms constitute one of the major microbial problems in DWDS that most contributes to the deterioration of water quality. The main goal of this work is to provide a contribution to better understand the biological and ecological mechanisms (adhesion, coaggregation, microbial diversity and interactions, antimicrobial resistance) involved in biofilm formation in DWDS, with intent to control and prevent their formation, in order to improve DW quality. This work reveals that A. calcoaceticus had high ability to adhere to surfaces, coaggregate with partner bacteria and provide resistance to control. Their presence in the synthetic consortium represented a colonization advantage. Also, microbial diversity and interactions increased biofilm resistance and resilience.