Download or read book Dynamics and Control of Solids liquid Separation in the Activated Sludge Process written by Robert David Hill and published by . This book was released on 1985 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activated Sludge written by Wesley Eckenfelder and published by CRC Press. This book was released on 1998-08-04 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Process Theory Kinetics and Sludge Quality Control: Activated Sludge Process - Process Theory - Activated Sludge Separation Problems - References Activated Sludge Treatment of Municipal Wastewater U.S.A. Practice: General Approach - Clarifier Design - Aeration Tank (Reactor) Design - Appurtenance Design - Configurations - ReferencesEurope

Download or read book Instrumentation Control and Automation of Water and Wastewater Treatment and Transport Systems written by R. Briggs and published by Elsevier. This book was released on 2013-09-24 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: Instrumentation, Control and Automation of Water and Wastewater Treatment and Transport Systems documents the proceedings of the 5th IAWPRC Workshop held in Yokohama and Kyoto, Japan, 26 July-3 August 1990. The papers presented at this Workshop have emphasized the following aspects: • new sensor technology based on developments in electrochemistry, fiber optics, and electro-optics; • research into materials such as those needed to produce membranes of the required selectivity, for immobilization of reactive species, and for addition of reagents and standards; • the use of inferential measurements coupled with expert system technology; • the ever-increasing power of microprocessors and the continuing reduction in their unit costs; • better communications capability; • improved mathematical modeling; • an increased awareness of the improved management that results from the timely availability of relevant data to the appropriate levels in the management hierarchy. This book, together with the proceedings of previous workshops, provides what is probably the most comprehensive account of the state of the art and recent developments in instrumentation, control, and automation as applied to the water and water-using industries, and as such will be invaluable to the practitioner, the researcher, and the student community.

Download or read book Improved Liquid solids Separation by an Aluminum Compound in Activated Sludge Treatment written by Charles F. Lenhart and published by . This book was released on 1975 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activated Sludge written by Wesley Eckenfelder and published by CRC Press. This book was released on 1998-08-04 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Process Theory Kinetics and Sludge Quality Control: Activated Sludge Process - Process Theory - Activated Sludge Separation Problems - References Activated Sludge Treatment of Municipal Wastewater U.S.A. Practice: General Approach - Clarifier Design - Aeration Tank (Reactor) Design - Appurtenance Design - Configurations - References European Practices: Introduction - Historical Perspective - Process Design - Models - Dynamic Models - Aeration Systems - Alternatives to the Main Types of Aeration Units - Secondary Settlement - Process Sequences - Instrumentation, Control, and Automation (ICA) - Some Other Process Variants - Future Trends - References Activated Sludge Treatment of Industrial Waters: Introduction - Pretreatment of Industrial Wastewater - Characterization of Industrial Wastewater - Principles of Biological Oxidation - Acclimation of Biological Sludges - Kinetics of Organic Removal - Activated Sludge Effluent Variability - Bioinhibition of the Activated Sludge Process - Effect of Temperature - Sludge Quality Control - Stripping of Volatile Organics - Nitrification and Denitrification - Activated Sludge Processes - Treatment of Industrial Wastewaters in Municipal Activated Sludge Plants - Application of Powdered Activated Carbon (PACT) - Final Clarification - Effluent Suspended Solids Control - Laboratory and Pilot Plant Procedures for the Development of Process Design Criteria - Activated Sludge Design Procedure for Soluble Wastewater Using Complete Mix Activated Sludge - Design Procedure for a Wastewater Containing Degradable Influent Volatile Suspended Solids - Design for Priority Pollutant Removal - References.

Download or read book Study of Activated Sludge Separation by Dynamic Straining written by James Dumanowski and published by . This book was released on 1978 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activated Sludge Separation Problems written by Valter Tandoi and published by IWA Publishing. This book was released on 2006-01-01 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Activated Sludge (AS) Process is old technology but is still widely adopted worldwide for its convenience and simplicity: an impressive number (many hundred of thousands) of this kind of system are in operation. Occasionally, problems such as bulking and foaming occur, causing regulation violations and large investment is often required immediately to control them. For this reason, an intense research effort has been made during the last few decades to face these problems, and this report details the work undertaken by the IWA Specialist Group on Activated Sludge Population Dynamics. This Scientific and Technical Report describes the main reasons fslyuor the growth of the different filamentous microorganisms in activated sludge, and the biological molecular tools available today for the identification of the main biomass components. 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 seven chapters, presenting up-to-date technical and scientific aspects of these processes. Scientific and Technical Report No. 16

Download or read book Activated Sludge Separation Problems written by Valter Tandoi and published by IWA Publishing. This book was released on 2017-09-15 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book High shear and Pressure Activated Sludge Treatment written by Charles William Coddington and published by . This book was released on 1965 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the development of the activated sludge process in 1913 many attempts have been made to improve it. One approach has been to increase the oxygen available to the bio-mass. This study combined the use of elevated pressure and high-shear mixing to increase the oxygen transfer. The conventional method of separating activated sludge has been flocculation followed by sedimentation. High-shear mixing breaks up the bio-mass thus hindering flocculation. Flotation, a method of solid-liquid separation used in industrial processes, could utilize the dissolved air released when the elevated pressure is released. A laboratory-scale, activated sludge treatment unit was operated at various combinations of pressure and mixing. The solid-liquid separation characteristics of the mixed liquor were studied. Separation by settling was investigated when the unit was operated at atmospheric pressure and separation by flotation was investigated when the unit was operated at an elevated pressure of 30 psig. It was concluded from these tests that: (1) the effluent provided by sedimentation and flotation following medium and high-shear mixing is not adequate for discharge to most water-courses. (2) Flotation does not yield as clear an effluent as sedimentation. (3) Suspended solids removal by flotation requires a shorter detention time than by sedimentation. (4) Flotation yields a denser sludge than sedimentation. (5) In the flotation process no advantage was found by using a pressure release of more than 20 psi.

Download or read book Improved Liquid solids Separation by an Aluminum Compound in Activated Sludge Treatment written by Charles F. Lenhart and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control Strategies for the Activated Sludge Process written by Thomas M. Keinath and published by . This book was released on 1980 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics and Control of the Activated Sludge Process written by John F. Andrews and published by . This book was released on 1992 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamics of Environmental Bioprocesses written by Jonathan B. Snape and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic environmental processes are complex; the easiest and most effective way to understanding them lies through the disciplines of dynamic modelling and computer simulation. The prerequisite modelling fundamentals are presented in the first chapter in a manner comprehensible to students as well as to practising scientists and engineers. The second chapter describes the many environmental processes that lend themselves to modelling, for example pollution and wastewater treatment. The third part of the book provides 65 simulation examples both on the page and on an accompanying diskette in the simulation language ISIM - the first time that this has been done with a teaching book in this field - ready-to-run on any DOS personal computer. Crucially, the simulation runs can be interrupted to allow rapid interactive parameter changes and easy plotting of results; this enables the reader to get a feel for the model and system behaviour.

Download or read book A Dynamic Knowledge based Decision Support System to Handle Solids Separation Problems in Activated Sludge Systems Development and Validation written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: El sistema de fangs activats és el tractament biològic més àmpliament utilitzat arreu del món per la depuració daigües residuals. El seu funcionament depèn de la correcta operació tant del reactor biològic com del decantador secundari. Quan la fase de sedimentació no es realitza correctament, la biomassa no decantada sescapa amb lefluent causant un impacte sobre el medi receptor. Els problemes de separació de sòlids, són actualment una de les principals causes dineficiència en loperació dels sistemes de fangs activats arreu del món. Inclouen: bulking filamentós, bulking viscós, escumes biològiques, creixement dispers, flòcul pin-point i desnitrificació incontrolada. Lorigen dels problemes de separació generalment es troba en un desequilibri entre les principals comunitats de microorganismes implicades en la sedimentació de la biomassa: els bacteris formadors de flòcul i els bacteris filamentosos. Degut a aquest origen microbiològic, la seva identificació i control no és una tasca fàcil pels caps de planta. Els Sistemes de Suport a la Presa de Decisions basats en el coneixement (KBDSS) són un grup deines informàtiques caracteritzades per la seva capacitat de representar coneixement heurístic i tractar grans quantitats de dades. Lobjectiu de la present tesi és el desenvolupament i validació dun KBDSS específicament dissenyat per donar suport als caps de planta en el control dels problemes de separació de sòlids dorígen microbiològic en els sistemes de fangs activats. Per aconseguir aquest objectiu principal, el KBDSS ha de presentar les següents característiques: (1) la implementació del sistema ha de ser viable i realista per garantir el seu correcte funcionament; (2) el raonament del sistema ha de ser dinàmic i evolutiu per adaptar-se a les necessitats del domini al qual es vol aplicar i (3) el raonament del sistema ha de ser intelligent. En primer lloc, a fi de garantir la viabilitat del sistema, sha realitzat un estudi a petita escala (Catalunya) que ha permès det.

Download or read book Activated Sludge Developments And Sustainable Solutions written by Nicholas F Gray and published by World Scientific. This book was released on 2023-02-27 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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)

Download or read book Cause of Inefficient Solids Separation in the Activated Sludge Process written by Richard I. Dick and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Particle Size and Physico chemical Influences on Activated Sludge Solids liquid Separation written by T. Hall and published by . This book was released on 1982 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: