Modelling Biological Nitrogen Removal In Activated Sludge Systems

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Modelling Biological Nitrogen Removal in Activated Sludge Systems

Author : Eugine Makaya
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659676185
Total Pages : 68 pages
Book Rating : 4.6/5 (761 download)

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Book Synopsis Modelling Biological Nitrogen Removal in Activated Sludge Systems by : Eugine Makaya

Download or read book Modelling Biological Nitrogen Removal in Activated Sludge Systems written by Eugine Makaya and published by LAP Lambert Academic Publishing. This book was released on 2015-02-12 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater treatment has been made a regulatory requirement in many countries world-over. As a result biological methods are finding widespread usage due to their improved nutrient removal efficiency. Nutrient enrichment of receiving watercourses has prompted the need for enhanced nutrient removal systems. It is against this background that this book outlines nitrogen removal in activated sludge systems through a real case study. The book is a must read for all academics with interest in Activated Sludge Systems. It provides vital insights into wastewater treatment in a tropical environment. The book attempts at establishing the applicability of SASSPro V2 modelling and simulation software in simulating nitrogen removal from wastewater treatment plants. From the case study, it was discovered that the software could predict nitrogen removal to very high levels of precision under different sludge retention times.

Biological Nitrogen Removal Activated Sludge Process in Warm Climates

Author : Cao Ye Shi
Publisher : IWA Publishing
ISBN 13 : 1843391872
Total Pages : 169 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Biological Nitrogen Removal Activated Sludge Process in Warm Climates by : Cao Ye Shi

Download or read book Biological Nitrogen Removal Activated Sludge Process in Warm Climates written by Cao Ye Shi and published by IWA Publishing. This book was released on 2008-04-14 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Mathematical Modelling and Computer Simulation of Activated Sludge Systems

Author : Jacek Makinia
Publisher : IWA Publishing
ISBN 13 : 1780409516
Total Pages : 682 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Mathematical Modelling and Computer Simulation of Activated Sludge Systems by : Jacek Makinia

Download or read book Mathematical Modelling and Computer Simulation of Activated Sludge Systems written by Jacek Makinia and published by IWA Publishing. This book was released on 2020-03-02 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Modelling and Computer Simulation of Activated Sludge Systems – Second Edition provides, from the process engineering perspective, a comprehensive and up-to-date overview regarding various aspects of the mechanistic (“white box”) modelling and simulation of advanced activated sludge systems performing biological nutrient removal. In the new edition of the book, a special focus is given to nitrogen removal and the latest developments in modelling the innovative nitrogen removal processes. Furthermore, a new section on micropollutant removal has been added. The focus of modelling has been shifting in the last years to models that can describe the performance of a whole plant (plant-wide modelling). The expanded part of this new edition introduces models describing the most important processes interrelated with the mainstream activated sludge systems as well as models describing the energy balance, operating costs and environmental impact. The complex process evaluation, including minimization of energy consumption and carbon footprint, is in line with the present and future wastewater treatment goals. By combining a general introduction and a textbook, this book serves both intermediate and more experienced model users, both researchers and practitioners, as a comprehensive guide to modelling and simulation studies. The book can be used as a supplemental material at graduate and post-graduate levels of wastewater engineering/modelling courses.

Modeling of Activated Sludge Systems

Author : Derin Orhon
Publisher : CRC Press
ISBN 13 : 9781566761017
Total Pages : 618 pages
Book Rating : 4.7/5 (61 download)

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Book Synopsis Modeling of Activated Sludge Systems by : Derin Orhon

Download or read book Modeling of Activated Sludge Systems written by Derin Orhon and published by CRC Press. This book was released on 1997-07-15 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Activated sludge is the most vital wastewater process today. Now, this recent book provides a comprehensive guide to the modelling and design of activated sludge systems. Written by two leaders in the wastewater field, the book presents extensive and up-to-date coverage of all areas in the activated sludge process microbiological basis, reactor kinetics, and design methodologies. The book is organized for easy reference and is ideal as a text or desktop guide.

Guidelines for Using Activated Sludge Models

Author : Leiv Rieger
Publisher : IWA Publishing
ISBN 13 : 1843391740
Total Pages : 287 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Guidelines for Using Activated Sludge Models by : Leiv Rieger

Download or read book Guidelines for Using Activated Sludge Models written by Leiv Rieger and published by IWA Publishing. This book was released on 2012-09-14 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Biological Wastewater Treatment: Principles, Modeling and Design

Author : Guang-Hao Chen
Publisher : IWA Publishing
ISBN 13 : 1789060354
Total Pages : 867 pages
Book Rating : 4.7/5 (89 download)

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Book Synopsis Biological Wastewater Treatment: Principles, Modeling and Design by : Guang-Hao Chen

Download or read book Biological Wastewater Treatment: Principles, Modeling and Design written by Guang-Hao Chen and published by IWA Publishing. This book was released on 2020-07-15 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of this book was published in 2008 and it went on to become IWA Publishing’s bestseller. Clearly there was a need for it because over the twenty years prior to 2008, the knowledge and understanding of wastewater treatment had advanced extensively and moved away from empirically-based approaches to a fundamental first-principles approach based on chemistry, microbiology, physical and bioprocess engineering, mathematics and modelling. However the quantity, complexity and diversity of these new developments was overwhelming for young water professionals, particularly in developing countries without readily available access to advanced-level tertiary education courses in wastewater treatment. For a whole new generation of young scientists and engineers entering the wastewater treatment profession, this book assembled and integrated the postgraduate course material of a dozen or so professors from research groups around the world who have made significant contributions to the advances in wastewater treatment. This material had matured to the degree that it had been codified into mathematical models for simulation with computers. The first edition of the book offered, that upon completion of an in-depth study of its contents, the modern approach of modelling and simulation in wastewater treatment plant design and operation could be embraced with deeper insight, advanced knowledge and greater confidence, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks, or biofilm systems. However, the advances and developments in wastewater treatment have accelerated over the past 12 years since publication of the first edition. While all the chapters of the first edition have been updated to accommodate these advances and developments, some, such as granular sludge, membrane bioreactors, sulphur conversion-based bioprocesses and biofilm reactors which were new in 2008, have matured into new industry approaches and are also now included in this second edition. The target readership of this second edition remains the young water professionals, who will still be active in the field of protecting our precious water resources long after the aging professors who are leading some of these advances have retired. The authors, all still active in the field, are aware that cleaning dirty water has become more complex but that it is even more urgent now than 12 years ago, and offer this second edition to help the young water professionals engage with the scientific and bioprocess engineering principles of wastewater treatment science and technology with deeper insight, advanced knowledge and greater confidence built on stronger competence.

Treatment of Waste Water with Biological Nitrogen Removal

Author : Shahpar Altaf
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659318207
Total Pages : 96 pages
Book Rating : 4.3/5 (182 download)

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Book Synopsis Treatment of Waste Water with Biological Nitrogen Removal by : Shahpar Altaf

Download or read book Treatment of Waste Water with Biological Nitrogen Removal written by Shahpar Altaf and published by LAP Lambert Academic Publishing. This book was released on 2013-01 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of mathematical models in design and operation of biological nutrient removal systems is becoming more important with the legislations getting stricter. Recent developments in computer technology enabled development of computer programs that are able to solve complex models required to describe the processes taking place in activated sludge plants. In this study, methods for determining COD and nitrogen fractions and kinetic and stoichiometric parameters for domestic and industrial wastewaters are evaluated, and wastewater is fractionated using actual plant measurements and results of previous studies in literature. In addition, IWAQ Activated Sludge Model Number 1 (ASM1) is applied to Comodepur Wastewater Treatment Plant Italy using ASM 1 run-time simulation environment. Due to limitations of the software for simulating the behavior of the WWTP, benchmark configuration of the model had been used and Post Denitrification has not been included in the study. Mostly default kinetic and stoichiometric parameters offered by IWAQ Task Group are used in simulations some of them had been calibrated to get closer values to the measured ones.

Biological Wastewater Treatment

Author : Mogens Henze
Publisher : IWA Publishing (International Water Assoc)
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (4 download)

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Book Synopsis Biological Wastewater Treatment by : Mogens Henze

Download or read book Biological Wastewater Treatment written by Mogens Henze and published by IWA Publishing (International Water Assoc). This book was released on 1881 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: For information on the online course in Biological Wastewater Treatment from UNESCO-IHE, visit: http://www.iwapublishing.co.uk/books/biological-wastewater-treatment-online-course-principles-modeling-and-design Over the past twenty years, the knowledge and understanding of wastewater treatment have advanced extensively and moved away from empirically-based approaches to a first principles approach embracing chemistry, microbiology, physical and bioprocess engineering, and mathematics. Many of these advances have matured to the degree that they have been codified into mathematical models for simulation with computers. For a new generation of young scientists and engineers entering the wastewater treatment profession, the quantity, complexity and diversity of these new developments can be overwhelming, particularly in developing countries where access is not readily available to advanced level tertiary education courses in wastewater treatment. Biological Wastewater Treatment addresses this deficiency. It assembles and integrates the postgraduate course material of a dozen or so professors from research groups around the world that have made significant contributions to the advances in wastewater treatment. The book forms part of an internet-based curriculum in biological wastewater treatment which also includes: Summarized lecture handouts of the topics covered in book Filmed lectures by the author professors Tutorial exercises for students self-learning Upon completion of this curriculum the modern approach of modelling and simulation to wastewater treatment plant design and operation, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks or biofilm systems, can be embraced with deeper insight, advanced knowledge and greater confidence.

Characterizing Mechanisms of Simultaneous Biological Nutrient Removal During Wastewater Treatment

Author : P. F. Strom
Publisher : IWA Publishing
ISBN 13 : 1843397056
Total Pages : 104 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Characterizing Mechanisms of Simultaneous Biological Nutrient Removal During Wastewater Treatment by : P. F. Strom

Download or read book Characterizing Mechanisms of Simultaneous Biological Nutrient Removal During Wastewater Treatment written by P. F. Strom and published by IWA Publishing. This book was released on 2004-01-01 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simultaneous biological nutrient removal (SBNR) is the removal of nitrogen and/or phosphorus in excess of that required for biomass synthesis in biological wastewater treatment systems where there are no defined anaerobic and/or anoxic zones. The hypothesis is that one or more of three mechanisms is responsible within individual systems: variations in the bioreactor macroenvironment created by the mixing pattern, gradients within the floc microenvironment, and/or novel microorganism activity. Understanding of the mechanisms of SBNR can be expected to lead to improved efficiency and reliability in its application. Preliminary work documented SBNR in 7 full-scale OrbalTM closed loop bioreactors. A batch assay demonstrated that novel microorganism activity was of little importance in SBNR at the three plants tested. While the floc microenvironment likely plays an important role in nitrogen removal in such plants, it cannot explain phosphorus removal. A computational fluid dynamics (CFD) model was developed to elucidate the role of the bioreactor macroenvironment in SBNR. This is the first reported application of CFD to activated sludge biological wastewater treatment. Although the software and computational requirements limited model complexity, it still simulated the creation of dissolved oxygen gradients within the system, demonstrating that the anaerobic zones required for SBNR could occur.

Activated Sludge Modelling - Processes in Theory and Practice

Author : M. Henze
Publisher : IWA Publishing (International Water Assoc)
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.X/5 (4 download)

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Book Synopsis Activated Sludge Modelling - Processes in Theory and Practice by : M. Henze

Download or read book Activated Sludge Modelling - Processes in Theory and Practice written by M. Henze and published by IWA Publishing (International Water Assoc). This book was released on 2002-05-31 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of models in activated sludge design and operation is increasing, with a similar trend seen in education. Starting with the original IAWPRC Activated Sludge Model no 1 (ASM1) and the subsequent ASM2 and ASM2D, the first generation of activated sludge models have played an important role in practice. With the development of the latest IWA Activated Sludge Model no 3 further progress has been made, and given the concurrent development of new methods for characterization of biomass and wastewater, this is a field of vigorous activity at present. The fifth Kollekolle Seminar brought together many of the world's leading experts on the activated sludge process, who have been working with activated sludge models in practice and research. The aim, as with previous seminars was to present the latest research findings, putting them into the proper perspective. From this high-quality programme 22 papers have been selected and revised to provide the best collection of papers on the state of the art of activated sludge modeling. Papers cover the following topics: modeling developments; wastewater and biomass characterization and parameter identification; modeling in practices.

A Dynamic Model of the Biological Processes Causing BOD- and Nitrogen Removal in Activated Sludge

Author : J. C. Behrens
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (471 download)

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Book Synopsis A Dynamic Model of the Biological Processes Causing BOD- and Nitrogen Removal in Activated Sludge by : J. C. Behrens

Download or read book A Dynamic Model of the Biological Processes Causing BOD- and Nitrogen Removal in Activated Sludge written by J. C. Behrens and published by . This book was released on 1977 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fundamentals of Biological Wastewater Treatment

Author : Udo Wiesmann
Publisher : John Wiley & Sons
ISBN 13 : 3527609571
Total Pages : 391 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Fundamentals of Biological Wastewater Treatment by : Udo Wiesmann

Download or read book Fundamentals of Biological Wastewater Treatment written by Udo Wiesmann and published by John Wiley & Sons. This book was released on 2007-02-27 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise introduction to the fundamentals of biological treatment of wastewater describes how to model and integrate biological steps into industrial processes. The book first covers the chemical, physical and biological basics, including wastewater characteristics, microbial metabolism, determining stoichiometric equations for catabolism and anabolism, measurements of mass transfer and respiration rates and the aerobic treatment of wastewater loaded with dissolved organics. It the moves on to deal with such applications and technologies as nitrogen and phosphorus removal, membrane technology, the assessment and selection of aeration systems, simple models for biofilm reactors and the modeling of activated sludge processes. A final section looks at the processing of water and the treatment of wastewater integrated into the production process. Essential reading for chemists, engineers, microbiologists, environmental officers, agencies and consultants, in both academia and industry.

Activated Sludge Models

Author : The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment
Publisher : IWA Publishing
ISBN 13 : 9781900222242
Total Pages : 132 pages
Book Rating : 4.2/5 (222 download)

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

Download or read book Activated Sludge Models written by The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment and published by IWA Publishing. This book was released on 2000-05-31 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Handbook of Biological Wastewater Treatment

Author : Adrianus van Haandel
Publisher : IWA Publishing
ISBN 13 : 1780400004
Total Pages : 819 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Handbook of Biological Wastewater Treatment by : Adrianus van Haandel

Download or read book Handbook of Biological Wastewater Treatment written by Adrianus van Haandel and published by IWA Publishing. This book was released on 2012-02-20 with total page 819 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of this comprehensive new edition of Handbook of Biological Wastewater Treatment ranges from the design of the activated sludge system, final settlers, auxiliary units (sludge thickeners and digesters) to pre-treatment units such as primary settlers and UASB reactors. The core of the book deals with the optimized design of biological and chemical nutrient removal. The book presents the state-of-the-art theory concerning the various aspects of the activated sludge system and develops procedures for optimized cost-based design and operation. It offers a truly integrated cost-based design method that can be easily implemented in spreadsheets and adapted to the particular needs of the user. Handbook of Biological Wastewater Treatment: Second Edition incorporates valuable new material that improves the instructive qualities of the first edition. The book has a new structure that makes the material more readily understandable and the numerous additional examples clarify the text. On the website www.wastewaterhandbook.com three free excel design spreadsheets for different configurations (secondary treatment with and without primary settling and nitrogen removal) can be downloaded to get the reader started with their own design projects. New sections have been added throughout: to explain the difference between true and apparent yield while the section on the F/M ratio, and especially the reasons not to use it, has been expanded; to demonstrate the effect of the oxygen recycle to the anoxic zones on both the denitrification capacity and the concept of available nitrate is explained in more detail. the latest developments on the causes and solution to sludge bulking and scum formation to show the rapid developments of innovative nitrogen removal and sludge separation problems the anaerobic pre-treatment section is completely rewritten based on the experiences obtained from an extensive review of large full-scale UASB based sewage treatment plants a new section on industrial anaerobic wastewater treatment three new appendices have been added. These deal with the calibration of the denitrification model, empirical design guidelines for final settler design (STORA/STOWA and ATV) and with the potential for development of denitrification in the final settler. A new chapter on moving bed biofilm reactors Handbook of Biological Wastewater Treatment: Second Edition is written for post graduate students and engineers in consulting firms and environmental protection agencies. It is an invaluable resource for everybody working in the field of wastewater treatment. Lecturer support material is available when adopted for university courses. This includes course material for the first 7 modules in the form of PDF printouts and an exercise file with questions and answers and a symbol list. Authors: Prof. dr. ir. A.C. van Haandel, Federal University of Campina Grande - Brazil and Ir. J.G.M. van der Lubbe, Biothane Systems International - Veolia, The Netherlands

Methods for Wastewater Characterization in Activated Sludge Modelling

Author : Henryk Melcer
Publisher : IWA Publishing
ISBN 13 : 1843396629
Total Pages : 600 pages
Book Rating : 4.8/5 (433 download)

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Book Synopsis Methods for Wastewater Characterization in Activated Sludge Modelling by : Henryk Melcer

Download or read book Methods for Wastewater Characterization in Activated Sludge Modelling written by Henryk Melcer and published by IWA Publishing. This book was released on 2004-11-01 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical modeling is a useful tool for the design, analysis and control of wastewater treatment systems. The activated sludge process is one of the most common processes used in wastewater treatment, and therefore is a particularly important candidate for the application of mathematical models. In the 1980s, a task group organized by the International Association on Water Quality (IAWQ) developed a conceptual model of the activated sludge process, which has become an industry-wide standard for the development of computer-based activated sludge models. A recent version of the IAWQ model incorporates 19 components, 17 processes, and numerous rate and stoichiometric coefficients. It is difficult and costly to quantify all of the necessary coefficients for any given application of the model; consequently, it is important to identify the most critical wastewater and biomass components and the relevant coefficients to be quantified for the most common uses of the model. It is also important to provide guidance to potential model users on the use of default and/or estimated values for the remaining parameters.

Wastewater Treatment Systems

Author : Gustaf Olsson
Publisher : IWA Publishing
ISBN 13 : 1900222159
Total Pages : 740 pages
Book Rating : 4.9/5 (2 download)

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Book Synopsis Wastewater Treatment Systems by : Gustaf Olsson

Download or read book Wastewater Treatment Systems written by Gustaf Olsson and published by IWA Publishing. This book was released on 1999-05-31 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a book for those operating and studying biological wastewater treatment plants. It introduces the state-of-the-art in process systems analysis (modelling and simulation, monitoring and diagnosis, process control and instrumentation) and in particular its application to wastewater treatment. While the emphasis is on biological nutrient removal, there is discussion of anaerobic treatment, and the principles apply to any treatment process. For the computer literate there is also a collection of MATLAB programs and functions that are mentioned throughout the book. They will run on both the professional and student editions of MATLAB Version 5. Contents Modelling Plant Dynamics, Basic Modelling, Advanced Modelling Empirical or Black-Box Models, Experiments and Data Screening, Principles of Parameter Estimation, Fitting and Validating Models, Simulators Diagnosis Diagnosis - an Introduction, Quality Management, Model Based Diagnosis, Knowledge Based Systems Control Goals and Strategies, Disturbances Manipulated Variables, Feedback Control, Model Based Control, Batch Plant Control, Plant Wide Control, Benefit Studies Instrumentation Primary Sensors, Analysers Actuators and Controllers The Future

Nitrification and Denitrification in the Activated Sludge Process

Author : Michael H. Gerardi
Publisher : John Wiley & Sons
ISBN 13 : 0471461318
Total Pages : 207 pages
Book Rating : 4.4/5 (714 download)

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Book Synopsis Nitrification and Denitrification in the Activated Sludge Process by : Michael H. Gerardi

Download or read book Nitrification and Denitrification in the Activated Sludge Process written by Michael H. Gerardi and published by John Wiley & Sons. This book was released on 2003-03-19 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrification and Denitrification in the Activated Sludge Process, the first in a series on the microbiology of wastewater treatment, comprises the critical topics of cost-effective operation, permit compliance, process control, and troubleshooting in wastewater treatment plants. Avoiding the technical jargon, chemical equations, and kinetics that typically accompany such texts, Nitrification and Denitrification in the Activated Sludge Process directly addresses plant operators and technicians, providing necessary information for understanding the microbiology and biological conditions that occur in the treatment process. Of special interest to wastewater treatment plant operators are the bacteria that degrade nitrogenous wastes–the nitrifying bacteria–and the bacteria that degrade carbonaceous wastes–the cBOD-removing bacteria. Both groups of bacteria need to be routinely monitored and operational conditions favorably adjusted to ensure desired nitrification. Each chapter in this groundbreaking study offers a better understanding of the importance of nitrification and denitrification and the bacteria involved in these crucial processes. Chapters include: Organotrophs The Wastewater Nitrogen Cycle Nitrite Ion Accumulation Dissolved Oxygen Denitrifying Bacteria Gaseous End Products Free Molecular Oxygen The Occurrence of Denitrification