Activated Sludge

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Activated Sludge and Aerobic Biofilm Reactors

Author : Marcos Von Sperling
Publisher : IWA Publishing
Page : 337 pages
File Size : 46,9 Mb
Release : 2007-03-30
Category : Science
ISBN : 9781843391654

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Activated Sludge and Aerobic Biofilm Reactors by Marcos Von Sperling Pdf

Activated Sludge and Aerobic Biofilm Reactors is the fifth volume in the series Biological Wastewater Treatment. The first part of the book is devoted to the activated sludge process, covering the removal of organic matter, nitrogen and phosphorus.A detailed analysis of the biological reactor (aeration tank) and the final sedimentation tanks is provided. The second part of the book covers aerobic biofilm reactors, especially trickling filters, rotating biological contractors and submerged aerated biofilters. For all the systems, the book presents in a clear and informative way the main concepts, working principles, expected removal efficiencies, design criteria, design examples, construction aspects and operational guidelines. About the series: The series is based on a highly acclaimed set of best selling textbooks. This international version is comprised by six textbooks giving a state-of-the-art presentation of the science and technology of biological wastewater treatment. Other titles in the series are: Volume 1: Waste Stabilisation Ponds; Volume 2: Basic Principles of Wastewater Treatment; Volume 3: Waste Stabilization Ponds; Volume 4: Anaerobic Reactors; Volume 6: Sludge Treatment and Disposal

Activated Sludge - 100 Years and Counting

Author : David Jenkins,Jiri Wanner
Publisher : IWA Publishing
Page : 460 pages
File Size : 53,6 Mb
Release : 2014-05-31
Category : Science
ISBN : 9781780404936

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Activated Sludge - 100 Years and Counting by David Jenkins,Jiri Wanner Pdf

Activated Sludge - 100 Years and Counting covers the current status of all aspects of the activated sludge process and looks forward to its further development in the future. It celebrates 100 years of the Activated Sludge process, from the time that the early developers presented the seminal works that led to its eventual worldwide adoption. The book assembles contributions from renowned world leaders in activated sludge research, development, technology and application. The objective of the book is to summarise the knowledge of all aspects of the activated sludge process and to present and discuss anticipated future developments. The book comprises invited papers that were delivered at the conference "Activated Sludge...100 Years and Counting!", held in Essen, Germany, June 12th to 14th, 2014. Activated Sludge - 100 Years and Counting is of interest to researchers, engineers, designers, operations specialists, and governmental agencies from a wide range of disciplines associated with all aspects of the activated sludge process. Authors: David Jenkins, University of California at Berkeley, USA, Jiri Wanner, Institute of Chemical Technology, Prague, Czech Republic.

Activated Sludge Wastewater Treatment

Author : Eric Wahlberg
Publisher : Unknown
Page : 530 pages
File Size : 48,7 Mb
Release : 1918-12-17
Category : Electronic
ISBN : 1605953334

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Activated Sludge Wastewater Treatment by Eric Wahlberg Pdf

This book is a milestone in the evolution of wastewater treatment operations. It explains the science of treatment framed within an ethics where wastewater personnel are seen as protectors of public health, preservers of the environment, and stewards of public monies. Written by a former plant operator with a Ph.D., the book presents the fundamental science behind the unit processes in wastewater treatment plants, including biological nutrient removal. In so doing, it challenges longstanding operational doctrines enshrined by habit and tradition, such as being careful not to remove too many influent organics in a primary clarifier for fear of starving the microorganisms in the aeration basin, or using the MLSS concentration to control effluent quality, or cutting the growth rate of microorganisms in anticipation of their slower growth rate in winter. Dispelling much of the prevailing that's-the-way-we've-always-done-it dogma is achieved through an elegant and understandable presentation of the biology, chemistry, and physics that explain the phenomena of wastewater treatment. At the same time, the book is intensely practical. It offers detailed and data-based process control solutions to stabilize plant performance, maintain consistent effluent quality, and reduce energy costs. Powerful, easily implemented statistical techniques are given to unlock the meaning of plant performance data and make informed process control decisions. The book's approach is learning-focused, including numerous examples of a failsafe, foolproof arithmetical method that enables operations professionals to define, set up, and solve problems.

Applications of Activated Sludge Models

Author : Damir Brdjanovic,S. C. F. Meijer,C. M. Lopez-Vazquez,C. M. Hooijmans,Mark C. M. van Loosdrecht
Publisher : IWA Publishing
Page : 472 pages
File Size : 50,5 Mb
Release : 2015-02-15
Category : Science
ISBN : 9781780404639

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Applications of Activated Sludge Models by Damir Brdjanovic,S. C. F. Meijer,C. M. Lopez-Vazquez,C. M. Hooijmans,Mark C. M. van Loosdrecht Pdf

In 1982 the International Association on Water Pollution Research and Control (IAWPRC), as it was then called, established a Task Group on Mathematical Modelling for Design and Operation of Activated Sludge Processes. The aim of the Task Group was to create a common platform that could be used for the future development of models for COD and N removal with a minimum of complexity. As the collaborative result of the work of several modelling groups, the Activated Sludge Model No. 1 (ASM1) was published in 1987, exactly 25 years ago. The ASM1 can be considered as the reference model, since this model triggered the general acceptance of wastewater treatment modelling, first in the research community and later on also in practice. ASM1 has become a reference for many scientific and practical projects, and has been implemented (in some cases with modifications) in most of the commercial software available for modelling and simulation of plants for N removal. The models have grown more complex over the years, from ASM1, including N removal processes, to ASM2 (and its variations) including P removal processes, and ASM3 that corrects the deficiencies of ASM1 and is based on a metabolic approach to modelling. So far, ASM1 is the most widely applied. Applications of Activated Sludge Models has been prepared in celebration of 25 years of ASM1 and in tribute to the activated sludge modelling pioneer, the late Professor G.v.R. Marrais. It consists of a dozen of practical applications for ASM models to model development, plant optimization, extension, upgrade, retrofit and troubleshooting, carried out by the members of the Delft modelling group over the last two decades.

Activated Sludge

Author : Tim Hobson
Publisher : Unknown
Page : 116 pages
File Size : 51,9 Mb
Release : 2009-12-08
Category : Electronic
ISBN : 1500692999

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Activated Sludge by Tim Hobson Pdf

From the book's introduction: This is not an introductory text about activated sludge. In this book, we discuss the observation, testing, and calculation procedures that provide data about the status of the activated sludge process. In addition, we discuss in depth how to apply this data to the business of controlling your activated sludge treatment process. Basic activated sludge concepts are addressed in this book in the context of process evaluation and control. We focus our efforts on discussing a basic, practical system of control for the process. The procedures discussed in this manual are equally applicable to all variations. An operator must have information about settleability, dissolved oxygen concentration, solids concentration, effluent quality, and clarifier sludge levels for consistent, efficient process performance of every type of activated sludge process. These procedures are covered in detail. The procedures discussed are based on work done by E. B. Mallory in the 1930's and 40's and further developed by Alfred W. West while he was head of the Operational Technology Branch of the Environmental Protection Agency in the 1960's and 70's. The system, with some modifications by this author, is frequently called the "West Method" or "Sludge Quality Method" of activated sludge process control because operational controls adjustments are based on the sludge quality existing in your facility rather than on arbitrary values.

Activated Sludge Models

Author : The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment
Publisher : IWA Publishing
Page : 132 pages
File Size : 43,6 Mb
Release : 2000-05-31
Category : Science
ISBN : 1900222248

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Activated Sludge Models by The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment Pdf

This book has been produced to give a total overview of the Activated Sludge Model (ASM) family at the start of 2000 and to give the reader easy access to the different models in their original versions. It thus presents ASM1, ASM2, ASM2d and ASM3 together for the first time. Modelling of activated sludge processes has become a common part of the design and operation of wastewater treatment plants. Today models are being used in design, control, teaching and research. Contents ASM3: Introduction, Comparison of ASM1 and ASM3, ASM3: Definition of compounds in the model, ASM3: Definition of processes in the Model, ASM3: Stoichiometry, ASM3: Kinetics, Limitations of ASM3, Aspects of application of ASM3, ASM3C: A Carbon based model, Conclusion ASM 2d: Introduction, Conceptual Approach, ASM 2d, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Limitations, Conclusion ASM 2: Introduction, ASM 2, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Wastewater Characterization for Activated Sludge Processes, Calibration of the ASM 2, Model Limitations, Conclusion, Bibliography ASM 1: Introduction, Method of Model Presentation, Model Incorporating Carbon Oxidation Nitrification and Denitrification, Characterization of Wastewater and Estimation of Parameter Values, Typical Parameter Ranges, Default Values, and Effects of Environmental Factors, Assumptions, Restrictions and Constraints, Implementation of the Activated Sludge Model Scientific and Technical Report No.9

Guidelines for Using Activated Sludge Models

Author : Leiv Rieger,Sylvie Gillot,Guenter Langergraber,Takayuki Ohtsuki,Andrew Shaw,Imre Takacs,Stefan Winkler
Publisher : IWA Publishing
Page : 287 pages
File Size : 46,5 Mb
Release : 2012-09-14
Category : Science
ISBN : 9781843391746

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Guidelines for Using Activated Sludge Models by Leiv Rieger,Sylvie Gillot,Guenter Langergraber,Takayuki Ohtsuki,Andrew Shaw,Imre Takacs,Stefan Winkler Pdf

Mathematical modelling of activated sludge systems is used widely for plant design, optimisation, training, controller design and research. The quality of simulation studies varies depending on the project objectives, finances and expertise available. Consideration has to be given to the model accuracy and the amount of time required carrying out a simulation study to produce the desired accuracy. Inconsistent approaches and insufficient documentation make quality assessment and comparison of simulation results difficult or almost impossible. A general framework for the application of activated sludge models is needed in order to overcome these obstacles. The genesis of the Good Modelling Practice (GMP) Task Group lies in a workshop held at the 4th IWA World Water Congress in Marrakech, Morocco where members of research groups active in wastewater treatment modelling came together to develop plans to synthesize the best practices of modellers from all over the world. The most cited protocols were included in the work, amongst others from: HSG (Hochschulgruppe), STOWA, BIOMATH and WERF. The goal of the group is to set up an internationally accepted framework to deal with the ASM type models in practice. This framework shall make modelling more straightforward and systematic to use especially for practitioners and consultants. Additionally, it shall help to define quality levels for simulation results, a procedure to assess this quality and to assist in the proper use of the models. The framework will describe a methodology for goal-oriented application of activated sludge models demonstrated by means of a concise guideline about the procedure of a simulation study and some illustrative case studies. The case studies shall give examples for the required data quality and quantity and the effort for calibration/validation with respect to a defined goal. The final report will include an extended appendix with additional information and details of methodologies. Additional features in Guidelines for Using Activated Sludge Models include a chapter on modelling industrial wastewater, an overview on the history, current practice and future of activated sludge modelling and several explanatory case studies. It can be used as an introductory book to learn about Good Modelling Practice (GMP) in activated sludge modelling and will be of special interest for process engineers who have no prior knowledge of modelling or for lecturers who need a textbook for their students. The STR can also be used as a modelling reference book and includes an extended appendix with additional information and details of methodologies. Scientific and Technical Report No. 22

Industrial Wastewater Treatment by Activated Sludge

Author : Derin Orhon,Fatos Germirli Babuna,Ozlem Karahan
Publisher : IWA Publishing
Page : 405 pages
File Size : 48,7 Mb
Release : 2009-02-02
Category : Science
ISBN : 9781843391449

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Industrial Wastewater Treatment by Activated Sludge by Derin Orhon,Fatos Germirli Babuna,Ozlem Karahan Pdf

Industrial pollution is still a major concern and despite its significance, sound and systematic pollution control efforts are very poorly documented. The character and treatability of industrial wastewaters is highly variable and specific for each industrial activity. Biological treatment with activated sludge is the appropriate technology for industrial wastewaters from several major industrial sectors. Industrial Wastewater Treatment by Activated Sludge deals with the activated sludge treatment of industrial wastewaters by considering conceptual frameworks, methodologies and case studies, in a stepwise manner. The issues related to activated sludge treatment, such as biodegradability based characterization, modeling, assessment of stoichiometric and kinetic parameters and design, as well as the issues of industrial pollution control, e.g. in-plant control, effect of pretreatment, etc. are combined in a way to provide a comprehensive and information-rich view to the reader. By doing so, the book supplies an up-to-date reference for industrial wastewater experts and both graduate and undergraduate students. Industrial Wastewater Treatment by Activated Sludge provides a roadmap, describing the methodologies for the treatment of industrial wastewaters from several major sectors, based on a solid theoretical background. Up to now although valuable separate efforts both on activated sludge and industrial wastewater treatment have been presented, an integrated approach that is crucial to practice has not been available. This gap is filled by this book.

Biological Nitrogen Removal Activated Sludge Process in Warm Climates

Author : Cao Ye Shi,Wah Yuen Long,Ang Chee Meng,Kandiah S. Raajeevan
Publisher : IWA Publishing
Page : 169 pages
File Size : 55,7 Mb
Release : 2008-04-14
Category : Science
ISBN : 9781843391876

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Biological Nitrogen Removal Activated Sludge Process in Warm Climates by Cao Ye Shi,Wah Yuen Long,Ang Chee Meng,Kandiah S. Raajeevan Pdf

Special Offer: Cao Ye Shi Author Set - Buy all three books together and save a total £76! Many Biological Nitrogen Removal (BNR) activated sludge processes in warm climates are conservatively designed, because little systematic investigation has been carried out on the BNR activated sludge process in warm or tropical climates, although many studies under temperate climate conditions are available. This book covers a wide spectrum of mechanistic approaches to deal with BNR activated sludge related issues such as sewage and sludge characterization, dynamic performance of full-scale processes, laboratory simulation and modelling that leads to a mechanistic and more economic design. Recommendations on the operation, upgrading and design of BNR activated sludge process are formulated. This will significantly aid the promotion of nitrogen removal in wastewater treatment plants in warm or tropical climates, particularly in developing countries. The book has three purposes: to make recommendations for appropriate upgrading of existing activated sludge processes and assess the performance of the upgraded activated sludge processes; to explore the feasibility of employing laboratory-scale systems to simulate the performance of full-scale processes; and to use mathematical modelling calibrated with the measured data obtained from the laboratory-scale experimentation to study the performance and the design of full-scale processes. Reports are presented of comprehensive studies on: (i) on-site investigation of the activated sludge processes in three water reclamation plants (WRPs) in Singapore; (ii) laboratory-scale investigations to simulate the performance of full-scale activated sludge processes and to optimize the process design; and (iii) mathematical modelling and simulation with Activated Sludge Model No. 1 (ASM No. 1). Based on these detailed studies, guidelines on the operation, upgrading and design of the BNR activated sludge process in warm climates are presented. Results indicate that the laboratory-scale systems, designed based on the scale-down principles developed in this study and mathematic simulation with the model parameters calibrated by using the data obtained from the laboratory experiment, were able to describe the performance of the full-scale process.The applications of the approaches and principles are not limited to geographic locations and types of pollutants, and thus can reduce significantly the cost and time for the process development of the activated sludge process. This book will be an invaluable reference source for process and design engineers and consultants concerned with biological wastewater treatment as well as researchers in universities and research institutes.

Activated Sludge

Author : Wesley Eckenfelder,Jack Musterman
Publisher : CRC Press
Page : 314 pages
File Size : 51,7 Mb
Release : 1998-03-11
Category : Technology & Engineering
ISBN : 1566763029

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Activated Sludge by Wesley Eckenfelder,Jack Musterman Pdf

In the past, industrial wastewater treatment primarily focused on the removal of BOD and suspended solids. In recent years, however, the focus has changed to aquatic toxicity, priority pollutants, and volatile organics. This required changes in how we design and operate biological treatment plants. Many existing plants must be retrofitted. New approaches to meet new requirements are discussed in detail. The authors, with a combined experience of sixty years, have presented case studies for a wide variety of industrial wastewaters including pulp and paper, food processing, chemical and pharmaceuticals, and textile wastewaters. Data interpretation and process design are developed through the use of seventeen examples. Procedures for the laboratory and pilot plant generation of process design data are presented. Emphasis is placed on meeting the many new regulations governing industrial wastewater discharges.

Process Control of Activated Sludge Plants by Microscopic Investigation

Author : Dick H. Eikelboom
Publisher : IWA Publishing
Page : 172 pages
File Size : 53,5 Mb
Release : 2000-06-30
Category : Science
ISBN : 9781900222297

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Process Control of Activated Sludge Plants by Microscopic Investigation by Dick H. Eikelboom Pdf

This title is only available as a free copy to download from the WaterWiki. To download your free copy of the eBook, click here. The manual can be used independantly but when used in combination with the CD-ROM, it makes a unique tool for process operators to diagnose and solve operational problems. It is also a valuable educational and training package for universities and post experience courses. Click here for more details about the CD-ROM Process stability and final effluent quality largely depend upon the composition of the biomass in an activated sludge plant. Operational problems such as bulking and scum formation occur when the wrong micro-organisms are dominating the sludge population. Microscopic sludge investigation is therefore essential for process control and stable plant operation. The manual outlines the theoretical framework, extensively illustrated with full-colour micrographs. Contents Microscopy Microscopic sludge investigation Characteristics of activated sludge flocs Filamentous micro-organisms Protozoa and metazoa Conclusions of microscopic sludge investigation The activated sludge process Operational problems Bulking sludge Scum formation

Activated Sludge Separation Problems

Author : Valter Tandoi,Simona Rossetti,Jiri Wanner
Publisher : IWA Publishing
Page : 324 pages
File Size : 46,8 Mb
Release : 2017-09-15
Category : Science
ISBN : 9781780408637

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Activated Sludge Separation Problems by Valter Tandoi,Simona Rossetti,Jiri Wanner Pdf

Activated Sludge Separation Problems: Theory, Control Measures, Practical Experiences, Second Edition, describes the most common activated sludge separation problems and explains the main reasons for the growth of the different filamentous microorganisms in activated sludge. The book summarizes the identification techniques for important groups of activated sludge microorganisms both based on conventional microscopic analysis and using the biological molecular tools available today (FISH and PCR). This new edition, with 70% new and updated material, also provides explanation of basic activated sludge process principles and of parameters necessary for process control and operation. The theory of secondary clarifies is described to the extent necessary for understanding the construction and operation of secondary clarifiers. The activated sludge reactor and secondary clarifies are treated as one system and the interactions are explained. The wide range of experiences around the world is documented and the methods to avoid the proliferation of these organisms are presented and critically reviewed. Activated Sludge Separation Problems consists of six chapters, presenting up-to-date technical and scientific aspects of these processes. The new edition also features an extended list of literature references for further reading. The book will be a valuable help for students of environmental engineering, wastewater specialists, plant operators and designers of activated sludge plants. It is also useful for specialists in wastewater operation laboratories, especially for those studying activated sludge separation properties.

Activated Sludge

Author : N. F. Gray
Publisher : Oxford University Press, USA
Page : 298 pages
File Size : 51,9 Mb
Release : 1990
Category : Language Arts & Disciplines
ISBN : UOM:39015018889330

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Activated Sludge by N. F. Gray Pdf

Activated sludge is the most widely used biological wastewater treatment process in the world, both for domestic and industrial purposes. This book reviews the major theoretical concepts and practical operational factors, and describes the complexities inherent in the process, which depends on a dense microbial population mixed in wastewater under specific aerobic conditions. It is an ideal reference source for scientists, and a useful troubleshooting guide for practicing engineers and plant operators.

The Microbiology of Activated Sludge

Author : Robert J. Seviour,L. Blackall
Publisher : Springer Science & Business Media
Page : 433 pages
File Size : 44,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401139519

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The Microbiology of Activated Sludge by Robert J. Seviour,L. Blackall Pdf

This book has been a long time in preparation. Initially it grew out of our frustrating attempts over the past ten years to identify the filamentous bacteria seen in large numbers in most activated sludge plants, and the realization that we know very little about them and the other microbial populations in these systems. Unfortunately this book does not provide many answers to the problems these filamentous bacteria can cause, but we hope it might encourage microbiologists and engineers to communi cate more with each other and to spend some time trying to understand the tax onomy, ecology and physiology of activated sludge microbes. It is now very timely, for example, to try to provide these filamentous bacteria with proper taxonomically valid names and to determine their correct place in bacterial classifications. 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. Wanner's book (1994a) also provides an excellent account of the problems of bulking and foaming caused by filamentous bacteria. These publications and others by Eikelboom's group have made an enormous contribution to the study of filamentous bacteria, and will con tinue to do so.

Activated Sludge

Author : Jiri Wanner
Publisher : CRC Press
Page : 338 pages
File Size : 48,8 Mb
Release : 2014-07-22
Category : Technology & Engineering
ISBN : 9781498710817

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Activated Sludge by Jiri Wanner Pdf

Filamentous bulking and foaming are the most frequent operational problems in activated sludge plants. This recent book provides a comprehensive, concise guide to the microbiological and technical aspects of bulking and foaming control. The result of over 25 years of research, the book stresses practical control measures based on kinetic and me