The Use of Ozonation and Biological Fluidized Bed Treatment for the Control of NOM in Drinking Water PDF Download
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Author: Alexancer Anatoly Yavich
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 604
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Book Description
Author: Alexancer Anatoly Yavich
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 604
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Book Description
Author: Bhavana Sushilkumar Karnik
Publisher:
ISBN:
Category : Disinfection and disinfectants
Languages : en
Pages : 492
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Book Description
Author: Kuan-chung Chen
Publisher:
ISBN:
Category : Disinfection and disinfectants
Languages : en
Pages : 452
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Book Description
Author: Bruno Langlais
Publisher: Routledge
ISBN: 1351426141
Category : Juvenile Nonfiction
Languages : en
Pages : 588
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Book Description
With the advent of the Safe Drinking Water Act Amendments of 1986, many water utilities are reexamining their water treatment practices. Upcoming new regulations on disinfection and on disinfection by-products, in particular, are the primary driving forces for the big interest in ozone. It appears that ozone, with its strong disinfection capabilities, and apparently lower levels of disinfection by-products (compared to other disinfectants), may be the oxidant/disinfectant of choice. Many utilities currently using chlorine for oxidation may need to switch due to chlorine by-product concerns. Utilities using chloramines may need to use ozone to meet CT requirements. This book, prepared by 35 international experts, includes current technology on the design, operation, and control of the ozone process within a drinking water plant. It combines almost 100 years of European ozone design and operating experience with North American design/operations experience and the North American regulatory and utility operational environment. Topics covered include ozone chemistry, toxicology, design consideration, engineering aspects, design of retrofit systems, and the operation and economics of ozone technology. The book contains a "how to" section on ozone treatability studies, which explains what information can be learned using treatability studies, at what scale (bench, pilot, or demonstration plant), and how this information can be used to design full-scale systems. It also includes valuable tips regarding important operating practices, as well as guidance on retrofits and the unique issues involved with retrofitting the ozone process. With ozone being one of the hottest areas of interest in drinking water, this book will prove essential to all water utilities, design engineers, regulators, and plant managers and supervisors.
Author: Kerwin L. Rakness
Publisher: American Water Works Association
ISBN: 9781613000229
Category : Water
Languages : en
Pages : 338
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Book Description
Author: Yulang Wang
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
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Book Description
Membrane technologies are gaining popularity for drinking water treatment; however, fouling remains a major constraint as it can increase operational cost and shorten membrane service life. An important source of foulants for low pressure membranes (LPMs) is natural organic matter (NOM) which is present to varying degrees in all surface waters. Membrane fouling attributable to NOM can be managed by using appropriate pre-treatment(s). Among the new developments in membrane technologies for drinking water applications has been the integration of different pre-treatment processes in order to achieve optimal membrane performance and minimum lifecycle cost. The process combination of ozonation and biological filtration (biofiltration) appears to be a promising integrated pre-treatment for LPMs as both processes have been shown to individually be able to reduce LPM fouling. However, the process combination is neither commonly employed nor well-studied. The goals of this research were to assess the fouling control capacity of ozonation-biofiltration as an integrated pre-treatment process for ultrafiltration (UF) membranes, evaluate the role of ozone in the ozonation-biofiltration-membrane (OBM) process combination, and investigate the effect of water quality and NOM on the process. The approach involved the operation of three UF pilot plants and long-term water quality and biomass monitoring at the Lakeview Water Treatment Plant (WTP), which is located in Southern Ontario and is one of the few WTPs in the world that employs an ozonation, biofiltration, and ultrafiltration process sequence. A novel Liquid Chromatography-Organic Carbon Detection (LC-OCD) method was used to characterize different NOM fractions, including biopolymers, humic substances, building blocks, low molecular weight (LMW) acids and humics, and LMW neutrals. During this 16-month investigation, the ozonation-biofiltration process combination achieved good turbidity reduction but only minimal dissolved organic carbon (DOC) removal. In addition, the operation of ozonation (on vs. off) clearly impacted both biomass quantity and activity within the BACCs as measured by adenosine triphosphate (ATP) and fluorescein diacetate (FDA), respectively. This is because ozone can decrease the hydrophobicity of DOC in water as seen by a 43% reduction in specific ultraviolet absorbance through ozonation. Among all NOM factions measured by LC-OCD, biopolymers, which made up 13% of DOC, appeared to be the only one responsible for UF membrane fouling. An average of 60% of the biopolymers reaching the full- and pilot-scale UF membranes were retained. The concentration of biopolymers in membrane influent was found to be correlated to the hydraulically reversible fouling rate, while hydraulically irreversible fouling was largely affected by particulate/colloid content. The integrated ozonation-biofiltration pre-treatment process substantially reduced hydraulically irreversible fouling by removing substances measured as turbidity. Furthermore, ozonation was found to be able to enhance UF membrane fouling control as it can decrease biopolymer retention by downstream membranes (independently of biofilter efficiency). This research provides valuable information for the water treatment sector on LPM fouling and its control. Overall, the full-scale integrated ozonation-biofiltration pre-treatment process successfully reduced downstream LPM hydraulically reversible and irreversible fouling, and as such the example of the Lakeview WTP can be used to guide designers of other municipal drinking water membrane installations. Information on the concentration and variation of biopolymers in source water is important for membrane water treatment applications, and biofilters should be optimized for better biopolymer removal. These findings provide useful insight into the design and operation of membrane water treatment facilities.
Author: Christiane Gottschalk
Publisher: John Wiley & Sons
ISBN: 3527628932
Category : Technology & Engineering
Languages : en
Pages : 378
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Book Description
The leading resource on ozone technology, this book contains everything from chemical basics to technical and economic concerns. The text has been updated to include the latest developments in water treatment and industrial processes. Following an introduction, the first part looks at toxicology, reaction mechanisms and full-scale applications, while Part B covers experimental design, equipment and analytical methods, mass transfer, reaction kinetics and the application of ozone in combined processes.
Author: Christiane Gottschalk
Publisher: John Wiley & Sons
ISBN: 3527613358
Category : Science
Languages : en
Pages : 199
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Book Description
The ozonation of compounds in water is a complex process. The mechanisms are very complicated, the parameters are many, but the possibilities of developing cost-effective treatment schemes for drinking water and waste water are large. Most books available today concentrate on either drinking water or waste water treatment, seldom dealing with both or explaining the essential differences. And only rare exceptions deal with the how-to of ozone experiments. This practical guide fills the gap. It contains the cumulative knowledge on experimental design, execution, interpretation and application. Drawing on experience gained from hours spent on laboratory research with drinking and waste waters, literature study, intensive discussion with leading experts, perplexed reflection and deep thought, the book offers practical help to avoid common pitfalls and unnecessary work. This book is aimed at professionals in industry and research currently using ozonation who want to optimize their system, as well as students beginning work with ozonation. It contains just enough information for beginners to start with, but goes rapidly to the detailed information that advanced readers need.
Author: Lori A. Cipparone
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 344
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Book Description
Author: Jan Derco
Publisher: BoD – Books on Demand
ISBN: 1789233828
Category : Science
Languages : en
Pages : 86
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Book Description
Ozone has an important and irreplaceable function in nature and human society. It preserves life on the Earth by stratospheric ozone layer. On the other hand, the formation of ground-level ozone by reactions of hydrocarbons with nitrogen dioxide in the presence of sunlight has adverse effects on humans and animals as well as on various materials. This book concentrates on the protection of stratospheric ozone and prevention of ground-level ozone formation; applications of its strong oxidizing properties in the treatment of water, wastewater and sludge; odor and color removal; uses in medicine as a disinfectant; and various other ozone therapies. It also deals with catalytic ozonation in water treatment, control methods for ozone applications on biological systems, various areas of ozone use in dental care, follow-up therapy and prevention.
