The Use of High Purity Oxygen in Activated Sludge Process, J.R. McWhirter

Автор: Westerhoff Garret P., Chowdhury Zaid, Summers R. S
Название: 3)Activated Carbon Solutions for Improving Water Quality
ISBN: 1583219072 ISBN-13(EAN): 9781583219072
Издательство: Mare Nostrum (Eurospan)
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Цена: 206050.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Activated carbon is simple to operate as an adsorption medium for water, serves as a proactive barrier for contamination, and does not produce by-products from its use. Used in treatment worldwide, activated carbon produces very high-quality water. Its implementation helps utilities gain regulatory compliance and position themselves to meet future requirements. This solutions-oriented book for water treatment providers, engineers, and students covers three major areas of concern.1. Fundamentals of activated carbon adsorption to provide a basic understanding of activated carbon technologies for drinking water treatment.2. Adsorption applications, approaches, and case studies that demonstrate how and where activated carbon has been implemented to solve specific water quality challenges.3. System design and procurement approaches to achieve effectiveness and efficiency in the use of granular activated carbon and powdered activated carbon.

Автор: Benjamin Lefebvre
Название: The Activated Sludge Process: Methods and Recent Developments
ISBN: 1536152021 ISBN-13(EAN): 9781536152029
Издательство: Nova Science
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Цена: 89750.00 T
Наличие на складе: Невозможна поставка.
Описание: In this collection, the authors report on the pretreatment methods for waste activated sludge based on pulsed electric field and corona discharge techniques. The effects of pulse magnitude, frequency, temperature and pretreatment time are demonstrated on the basis of cell membrane electroporation. The influence of voltage polarity, frequency, magnitude, treating time and temperature has also been demonstrated. A description of fundamental techniques in molecular biology for the analysis of the microbiota of activated sludge is provided. Activated sludge is a heterogeneous system of organisms, organic and inorganic material, and therefore giving a specific protocol for each molecular technique would be imprudent. The authors go on to discuss the Monod model, which provides a functional relationship between specific growth rate and substrate concentration in the bulk. Important research efforts dedicated to adequate use of the Monod model are presented, consolidating knowledge from activated sludge and biofilm modelling, identifying misdirections, and setting parameters for further research. In one study, different microwave power outputs and times were optimised for sludge solubilisation without evaporation loss in waste activated sludge from two different sources. The variable effects of pre-treatments on extracellular polymeric substances fraction, cellular oxidative stress and solubilisation of both sludges were evaluated to understand the impact of sludge complexity. The penultimate chapter examines how toxic carbon sources can cause higher residual effluent dissolved organic carbon than easily biodegraded carbon sources in the activated sludge process. Based on the variations of chemical components of activated sludge, mainly intracellular storage materials, extracellular polymeric substances and soluble microbial products, the performance and mechanism of toxic carbon on the activated sludge process can be clarified. The purpose of the final study is to research the supplementation of different concentrations of substrate on the degradation rate of xenobiotics, and to determine the optimal concentrations of auxiliary substrates that are most beneficial. The results show that sugar and peptone can affect 2,4-D degradation rate by several different degrees at different concentrations.

Автор: Robert J. Seviour; L. Blackall
Название: The Microbiology of Activated Sludge
ISBN: 0412793806 ISBN-13(EAN): 9780412793806
Издательство: Springer
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Цена: 191550.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The activated sludge process is the cornerstone of sewage treatment systems. This book presents a comprehensive review of the general microbiology of activated sludge and of the bacteria responsible for the major operational problems encountered. It focuses on the impact of molecular methods on our understanding of activated sludge microbiology.

Автор: American Water Works Association
Название: B605-13 Reactivation of Granular Activated Carbon
ISBN: 1583219455 ISBN-13(EAN): 9781583219454
Издательство: Mare Nostrum (Eurospan)
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Цена: 95170.00 T
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Описание: This standard covers the procurement of granulated activated carbon (GAC) reactivation services and the use of reactivated GAC for water treatment.

Автор: Gerardi Michael
Название: An Operator`s Guide to Biological Nutrient Removal (BNR) in the Activated Sludge Process
ISBN: 082060416X ISBN-13(EAN): 9780820604169
Издательство: Mare Nostrum (Eurospan)
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Цена: 43430.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Biological nutrient removal (BNR), the removal of nitrogen and phosphorus from wastewater, is a complex process. Although the activated sludge process is an efficient technology for the removal of biochemical oxygen demand (BOD) and total suspended solids (TSS), it provides less-than-optimal conditions for the removal of nitrogen and phosphorus, and presents numerous challenges to the operator trying to satisfy the many requirements for several different groups of bacteria. In addition to satisfying the requirements there are numerous, highly variable operational conditions that impact BNR. These conditions include: changes in strength and composition of the wastewater, alkalinity and pH, temperature, and presence of inhibitory and toxic wastes. Even fluctuations in flows, especially from inflow and infiltration, can adversely impact the aerobic, anoxic, and anaerobic conditions needed for successful BNR. Of the three treatment processes, nitrification, denitrification, and enhanced biological removal, nitrification is often the most difficult to achieve. Therefore, a large portion of this book reviews nitrification. Operators of the activated sludge process need to understand the basic biological, chemical, and physical requirements for BNR in order to improve the performance of these treatment processes. An Operator’s Guide to Biological Nutrient Removal (BNR) in the Activated Sludge Process is intended to help operators in the monitoring, troubleshooting, and process control of BNR. Numerous tables and figures are included in the book to help the operator understand the biological and chemical reactions that are involved in BNR processes and how the reactions can be monitored for process control.Design of BNR processes is not addressed in this book. Design is addressed in numerous engineering publications. The book serves to help operators achieve permit compliance for nitrogen and phosphorus discharge limits and obtain cost-effective operation.

Автор: Robert J. Seviour; L. Blackall
Название: The Microbiology of Activated Sludge
ISBN: 9401057540 ISBN-13(EAN): 9789401057547
Издательство: Springer
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Цена: 174150.00 T
Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book is not meant to compete directly with the books by Gray (1989, 1990) nor the excellent manual published by Jenkins and coworkers (1993b), which has been invaluable to us and others trying to identify filamentous bacteria.

Автор: American Water Works Association
Название: B600-16 Powdered Activated Carbon
ISBN: 1625761325 ISBN-13(EAN): 9781625761323
Издательство: Mare Nostrum (Eurospan)
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Цена: 70230.00 T
Наличие на складе: Невозможна поставка.
Описание: This standard describes powdered activated carbon (PAC) for use in adsorption of impurities for water supply service applications.