Intensifying Activated Sludge Using Media-Supported Biofilms
Intensifying Activated Sludge Using Media-Supported Biofilms

Author: Dwight Houweling

Publisher: CRC Press

Published: 2019-08-16

Total Pages: 159

ISBN-13: 0429522428

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Intensifying Activated Sludge Using Media-Supported Biofilms will be of interest to practicing wastewater treatment process designers, along with those seeking more compact and energy-efficient wastewater treatment options. The advantages of Moving Bed Biological Reactor (MBBR)-based hybrid processes are now well-established in practice, leading to their increased use in the field. Membrane Aerated Biofilm Reactor (MABR)-based hybrid processes are much newer and offer further systematic process and energy advantages. This book examines the evolution of hybrid technologies as well as the potential for continued improvement of biological wastewater treatment techniques. Features: Reviews current approaches for intensifying biological wastewater treatment processes and their mechanistic bases. Examines hybrid suspended growth/biofilm-based wastewater treatment processes, including the newly-developed MABR-based processes, and their unique dynamic performance characteristics. Presents a novel method for characterizing the performance and process intensification advantages of hybrid processes. Provides guidance for simulating the performance of hybrid processes, including oxygen transfer in MABR hybrid processes.

Intensifying Activated Sludge Using Media-Supported Biofilms
Intensifying Activated Sludge Using Media-Supported Biofilms

Author: Dwight Houweling

Publisher: CRC Press

Published: 2019-08-16

Total Pages: 144

ISBN-13: 0429535899

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Intensifying Activated Sludge Using Media-Supported Biofilms will be of interest to practicing wastewater treatment process designers, along with those seeking more compact and energy-efficient wastewater treatment options. The advantages of Moving Bed Biological Reactor (MBBR)-based hybrid processes are now well-established in practice, leading to their increased use in the field. Membrane Aerated Biofilm Reactor (MABR)-based hybrid processes are much newer and offer further systematic process and energy advantages. This book examines the evolution of hybrid technologies as well as the potential for continued improvement of biological wastewater treatment techniques. Features: Reviews current approaches for intensifying biological wastewater treatment processes and their mechanistic bases. Examines hybrid suspended growth/biofilm-based wastewater treatment processes, including the newly-developed MABR-based processes, and their unique dynamic performance characteristics. Presents a novel method for characterizing the performance and process intensification advantages of hybrid processes. Provides guidance for simulating the performance of hybrid processes, including oxygen transfer in MABR hybrid processes.

Activated Sludge and Aerobic Biofilm Reactors
Activated Sludge and Aerobic Biofilm Reactors

Author: Marcos Von Sperling

Publisher: IWA Publishing

Published: 2007-03-30

Total Pages: 337

ISBN-13: 1843391651

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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: Developments And Sustainable Solutions
Activated Sludge: Developments And Sustainable Solutions

Author: Nicholas F Gray

Publisher: World Scientific

Published: 2023-02-27

Total Pages: 626

ISBN-13: 180061389X

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Activated sludge is the most widely used biological wastewater treatment process globally to date, although its high energy demand makes it a major contributor of greenhouse gas emissions. Over recent decades it has been constantly modified and retrofitted to treat ever higher loads or improve effluent standards which have often resulted in even greater carbon emissions. Conventional activated sludge treatment is at a crossroads where new sustainable solutions are required if we are to protect the quality of our rivers and meet net-zero carbon targets.The book details current operation and design with special emphasis on the biological aspects of the process. From the microbial kinetics to the fascinating process of floc formation and development, the book explores the development of our understanding of the process looking at new sustainable designs, including biological nutrient removal and new aeration systems. Sludge separation problems and control options are explained, with a trouble-shooting guide to non-bulking problems. Environmental issues including noise, odor, aerosols, micro-plastics and nanoparticles are all reviewed, as is pathogen removal and the problem of antibiotic resistant genes and bacteria. The development of membrane bioreactors has increased process reliability and effluent quality, while integrated fixed-film activated sludge processes are more efficient and compact. The book concludes by exploring how activated sludge can become more sustainable, for example, by carbon harvesting and byproduct recovery.This interdisciplinary book is essential reading for both engineers and scientists whether training at university or practitioners and consultants in the wastewater industry.Related Link(s)

Microorganisms in Activated Sludge and Biofilm Processes III
Microorganisms in Activated Sludge and Biofilm Processes III

Author: Valter Tandoi

Publisher: IWA Publishing (International Water Assoc)

Published: 2002

Total Pages: 588

ISBN-13:

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The microbial complexity and the functions of the biomass present in activated sludge and biofilm systems were the subject matter of the 3rd Conference on Microorganisms in Activated Sludge and Biofilm Processes. Detailed knowledge of the identity, physiology and ecology of the microorganisms involved is central to any attempts to modify the composition of the biomass and hence optimise its performance. The Conference covered a wide range of topics dealing with the microbiology and microbial processes in activated sludge and biofilms, including sessions on newly identified microorganisms, microbial selection mechanisms and biomass storage processes. Many of these papers reported on the use of new molecular biological tools that directly address the population structure, dynamics and function of microbial communities. Other sessions dealt with work solving problems and improving performance in full-scale treatment plants and industrial wastewater treatment processes. From the extensive programme, a full peer review has selected for these proceedings 88 of the very best papers on the following topics: microbial dynamics; filamentous bacteria; polyphosphate and glycogen accumulating microorganisms; biofilm composition and processes; nitrifiers and denitrifiers; storage processes in biomass; biomass characterization; microbiology and biochemistry; full-scale experiences; foaming; industrial wastes. Together they form an unrivalled summary of work by the world?s leading experts to research the microbiological basis of wastewater treatment and improve the design and operation of biological processes. These proceedings are an essential reference for engineers, chemists, microbiologists and plant operators researching or applying activated sludge or biofilm techniques.

Activated Sludge
Activated Sludge

Author: Jiri Wanner

Publisher: CRC Press

Published: 1994-11-24

Total Pages: 342

ISBN-13: 9781566761215

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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 metabolic selection theories, as well as on case histories. Topics in the book include: biochemical processes in wastewater treatment, evaluation ofseparation problems, settling and foaming principles, bulking and foaming control methods, and system design. More than 100 tables and figures illustrate complex processes, and over 500 references provide a detailed compendium of available resources. It was the intention of the author to summarize in this book all essential pieces of information on both the microbiological and technical aspects of bulking and foaming control, so microbiologists and engineers can find new and helpful information from each other's field without studying vast numbers of primary literature sources. Naturally, the practical pieces of information required for solving practical operational problems are more stressed. The book is arranged into six major chapters which are subdivided into uniform topical sections. The reader interested in a particular problem or searching for a particular solution does not necessarily need to read the whole book to get the answer. There are many cross-references in the text which will lead the reader to the background of the problem, and to show its connection to similar problems and their solutions.

Activated Sludge
Activated Sludge

Author: N. F. Gray

Publisher: Oxford University Press, USA

Published: 1990

Total Pages: 298

ISBN-13:

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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.

Handbook Biological Waste Water Treatment - Design and Optimisation of Activated Sludge Systems
Handbook Biological Waste Water Treatment - Design and Optimisation of Activated Sludge Systems

Author:

Publisher: Webshop Wastewater Handbook

Published: 2007

Total Pages: 562

ISBN-13: 9077983228

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Since its conception almost a century ago, the activated sludge system has emerged as the dominant waste water treatment technology, with tens of thousands of implementations worldwide. The pivotal role played by the activated sludge system was originally due to its high efficiency in COD- and suspended solids removal, while more recently new processes for the removal of the macro-nutrients nitrogen and phosphorus have easily been accommodated.

Biological Concepts for Design and Operation of the Activated Sludge Process
Biological Concepts for Design and Operation of the Activated Sludge Process

Author: Anthony F. Gaudy

Publisher:

Published: 1972

Total Pages: 176

ISBN-13:

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Over the past decade, research has been conducted to produce a general body of conceptual principles applicable to design and operation of activated sludge processes. The aid of the report is to present these biological concepts in terms readily understood by engineering professionals. Generalized concepts of BOD exertion, the use of the measure of biologically available organic matter in a waste sample as a design and operational tool, the stoichiometry and mass balance concepts of treatment, and kinetic equations for microbial growth are presented. Design models are discussed, and a model for completely mixed reactors holding recycle solids, X(R), constant is recommended. Some guidelines for accommodation of various types of shock loadings are included. Concepts of oxidative assimilation and the multiple effects of solids concentration, nitrogen concentration, and detention time are related; a new activated sludge process (continuous oxidative assimilation) for nitrogen-deficient wastes is presented. Data supporting the concept of total oxidation are presented. Some possible flow diagrams for complete aerobic treatment (purification and sludge disposal) of metabolizable organic wastes are presented.