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Assessment Of Biodegradation And Biodegradation Kinetics Of Natural Organic Matter In Drinking Water Biofilters
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Book Synopsis Assessment of Biodegradation and Biodegradation Kinetics of Natural Organic Matter in Drinking Water Biofilters by : Jack Zhihai Wang
Download or read book Assessment of Biodegradation and Biodegradation Kinetics of Natural Organic Matter in Drinking Water Biofilters written by Jack Zhihai Wang and published by . This book was released on 1995 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Removal of Organic Matter by Classical Biofiltration by : Joan Theresa Thompson
Download or read book Removal of Organic Matter by Classical Biofiltration written by Joan Theresa Thompson and published by . This book was released on 2019 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pilot-scale biofiltration experiments were conducted at the Region of Waterloo's Mannheim Drinking Water Treatment Plant to inform the scientific and operational understanding of drinking water treatment by biologically-active GAC/sand filtration processes. Three dual-media granular activated carbon (GAC)/sand biofilters and one multi-media GAC-capped anthracite/sand biofilter media configuration were investigated. Both new GAC and GAC that had been biologically active for five years were used. The performance differences between a new, highly adsorptive GAC filter that is undergoing biological acclimation, and a biofilter that is stacked with older, biologically-active GAC media were investigated to increase the mechanistic understanding of natural organic matter (NOM) removal by biofiltration. The performance of a cost-effective, new GAC-capped anthracite/sand biofilter compared to a GAC/sand biofilter also was investigated. Performance was assessed using adenosine tri-phosphate (ATP) concentration associated with attached biomass in the filter media, dissolved organic carbon (DOC), UVabsorbance, and characterization by liquid chromatography-organic carbon detection (LC-OCD) fractionation. The filters were monitored for their performance in headloss accumulation and turbidity removal. Water from the full-scale water treatment plant was coagulated, flocculated, clarified by settling, and then ozonated. It was then directed to the pilot plant filters, which contained the same depth of media, but were operated separately from the full-scale plant. The experiments were conducted from June to September 2018, during warm water conditions (18-27ʻC). As expected, the new GAC/sand filter removed substantially more DOC, UV-absorbing compounds, and humic substances than did the biologically-active GAC. There was also a typical pattern of biological acclimation in this filter, as there was high DOC removal, followed by a decline, and then a steady-state period. DOC removal during the steady-state period in the new filter was 25 to 30% on average, which was significantly higher than that in the filter containing media that had been biologically active for five years (13% on average), suggesting that DOC removal might decline over years of service. Interestingly, the new GAC/sand filter did not out-perform the biologically-active GAC/sand filter in biopolymer removal, possibly due to the size (>20 kDa) and shape of these compounds. This observation also suggests that biodegradation of biopolymers (in contrast to other compounds) occurs directly in biologically-active GAC filters, and not necessarily by bioregeneration (freeing up of adsorptive sites). Further, compared to biologically-active GAC/sand, there was no outright disadvantage to running a GACcapped anthracite/sand biofilter. One month into the experiment, the backwashing procedure was altered to improve filter run times. The increased vigorousness caused the biofilm in the GAC-capped anthracite/sand filter to decrease temporarily, and it also caused a brief decrease in the DOC removal, whereas the GAC/sand biofilter was not affected by the backwashing change. Overall, it was found that (1) the new GAC filter demonstrated a trend in DOC removal that was expected, with the added finding that the biodegradation or adsorptive capacity declines over a period of several years after acclimation (2) adsorption did not enhance the removal of biopolymers, though they were removed by biofiltration, indicating that biodegradation may occur directly and not necessarily by bioregeneration (adsorption and desorption by biodegradation), and (3) as configured, the GAC/sand biofilter was more effective in removing DOC than the GAC-capped anthracite biofilter.
Book Synopsis Biodegradable Organic Matter in Drinking Water Treatment and Distribution by : Michèle Prévost
Download or read book Biodegradable Organic Matter in Drinking Water Treatment and Distribution written by Michèle Prévost and published by . This book was released on 2005 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This compilation covers all aspects of biodegradable organic matter in drinking water by addressing the improvement made to water treatment and quality during the last 20 years. This book is a must for researchers and a valuable reference and guidance tool for all water producers.
Book Synopsis Removal of Biodegradable Organic Matter in Drinking Water Biofilters by : Raymond M. Hozalski
Download or read book Removal of Biodegradable Organic Matter in Drinking Water Biofilters written by Raymond M. Hozalski and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Workshop written by and published by . This book was released on 1985 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microbial Growth in Drinking Water Supplies by : Dick van der Kooij
Download or read book Microbial Growth in Drinking Water Supplies written by Dick van der Kooij and published by IWA Publishing. This book was released on 2013-09-14 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Removal of Natural Organic Matter in Biofilters by : Edward J. Bouwer
Download or read book Removal of Natural Organic Matter in Biofilters written by Edward J. Bouwer and published by . This book was released on 1995 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimizing Filtration in Biological Filters by : Peter M. Huck
Download or read book Optimizing Filtration in Biological Filters written by Peter M. Huck and published by American Water Works Association. This book was released on 2000 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biodegradation and Bioremediation by : Blaise Lindsey
Download or read book Biodegradation and Bioremediation written by Blaise Lindsey and published by Scientific e-Resources. This book was released on 2018-10-11 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biodegradation is the break down of organic matter by microbes. Bioremediation is an engineered technique applied by people to clean up organic matter by helping microbes with the biodegradation process. One way of doing that is to introduce oxygen into the subsurface to help more aerobic microbes grow in order to clean up oil in the soil.The potential toxicity (harmful action) inherent in a substance is manifest only when that substance comes in contact with that susceptible living biological system. A chemical normally thought of as "e;harmless"e; will evoke a toxic response if added to a biological system in sufficient amount. The toxic potency of a chemicals is defined by the relationship between dose (the amount) of the chemical and the response that is produced in a biological system. The toxicity of industrial wastes is not often managed and it has caused serious damage to earth and water. The most important aspect of environmental biotechnology is the effective management of hazardous and toxic pollutants (xenobiotics) by bioremediation. The environmental clean-up process through bioremediation can be achieved in two ways-in situ and ex situ bioremediation. The book aims to provide relevant theoretical and practical frameworks and the latest empirical research findings in this area, along with case studies. It is written for students, academicians and industry professionals who want to improve their understanding of the strategic role of biodegradation and bioremediation at different levels of the biodegradation and bioremediation research and knowledge, that is, heavy metal pollution, toxicity, remediation methods and strategies to manage the waste in industries, which are a global concern.
Book Synopsis Advanced Oxidation and Biodegradation Processes for the Destruction of TOC and DBP Precursors by : Gerald E. Speitel
Download or read book Advanced Oxidation and Biodegradation Processes for the Destruction of TOC and DBP Precursors written by Gerald E. Speitel and published by American Water Works Association. This book was released on 1999 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of the Use of Respirometry for Measurement of Biodegradable Organic Matter in Drinking Water by : Seval Sen
Download or read book Assessment of the Use of Respirometry for Measurement of Biodegradable Organic Matter in Drinking Water written by Seval Sen and published by . This book was released on 2003 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigations of Biodegradability and Toxicity of Organic Compounds by : Jan Dojlido
Download or read book Investigations of Biodegradability and Toxicity of Organic Compounds written by Jan Dojlido and published by . This book was released on 1979 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biodegradation and Bioremediation by : Martin Alexander
Download or read book Biodegradation and Bioremediation written by Martin Alexander and published by Gulf Professional Publishing. This book was released on 1999 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alexander presents the basic principles of biodegradation and how these principles relate to bioremediation. All the subject's microbiological, chemical, toxicological, environmental, engineering and technological aspects are covered.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1995 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biodegradation of Organic Chemicals by : M. Alexander
Download or read book Biodegradation of Organic Chemicals written by M. Alexander and published by . This book was released on 1985 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been extensive studies on the occurrence, kinetics, and products of microbial transformation of organic compounds. Many of these investigations were designed to serve as models to predict what will occur in natural water, soil, sewage, and other ecosystems. Researchers assumed that if a compound was mineralized, cometabolized, or resistant to microbial conversion at the levels normally used for biodegradation tests, it would be similarly mineralized, cometabolized, or resistant at the parts-per-billion level, or even lower levels, in nature. It also was assumed that the products would be the same regardless of substrate concentration and that the kinetics would be unchanged except that rates would decline in direct proportion to substrate concentration. The purpose of this reprinted article is to show that erroneous conclusions may be reached from studies or routine tests done with organic chemicals at the levels often employed for predicting chemical fate in nature. These errors in extrapolation from high to low concentrations may occur in routine evaluations of biodegradation, careful assessments of kinetics, or the establishment of products formed in water, soil, or sediments. Additional keywords: Thresholds; Carbon Assimilation.
Book Synopsis An Innovative Role of Biofiltration in Wastewater Treatment Plants (WWTPs) by : Maulin P Shah
Download or read book An Innovative Role of Biofiltration in Wastewater Treatment Plants (WWTPs) written by Maulin P Shah and published by Elsevier. This book was released on 2021-12-01 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many physico-chemical and operational factors influence the performance, treatment costs and long-term stability of biofilters for the treatment of wastewater. An Innovative Role of Biofiltration in Wastewater Treatment Plants focuses on identifying the factors that affect biofiltration, such as the hydraulic retention time of the biofiltration system, the type and characteristics of the filter and the attached biomass, explains their influence and provides guidelines on how to control these factors to optimize better operation with respect to pollutant control present in wastewater treatment plants (WWTPs). The fundamental basis of treatment in biofilters is the action of pollutant-degrading microorganisms and consequently the book also discusses in depth about the microbial ecology of biofiltration. In addition, it explores the applications of biofiltration including the removal of emerging pollutants. Describes the microbial ecology of biofiltration Includes modeling of biofiltration Describes the designing of biofilters, start-up, and monitoring Discusses the mechanism of biofiltration Describes the controlling and operational factors of biofiltration
Book Synopsis Biodegradability of Organic Substances in Aquatic Envir by : Pavel Pitter
Download or read book Biodegradability of Organic Substances in Aquatic Envir written by Pavel Pitter and published by Springer. This book was released on 1990-07-05 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
