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 Improved Liquid solids Separation by an Aluminium Compound in Activated Sludge Treatment written by C.F. Lenhart and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Alum Addition to Activated Sludge with Tertiary Solids Removal written by Alan B. Hais and published by . This book was released on 1973 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WRC Information written by Water Research Centre (Great Britain) and published by . This book was released on 1983 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 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 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 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pretreatment in Chemical Water and Wastewater Treatment written by Hermann H. Hahn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Gothenburg Symposia on Chemical Treatment have proven to be a unique platform for the exchange of ideas between theory and practice. They bring together administrators, engineers and scientists, who are concerned with water purification and wastewater treatment through precipitation, coagulation and subsequent solid/liquid separation. This volume contains the proceedings of the 3rd Symposium, focussing on Pretreatment. Pretreatment is understood as the scene total of all measures taken at the pollutant source to protect water supply, the sewerage system, the central treatment plant, and the aqueous environment. It is, where applicable, the most efficient measure in ecological and economic respects. The contributions of this third volume address questions of surveillance, automation and remote control of installations as well as the principles of legal, administrative and economic measures for regulations within the context of pretreatment. Special attention is given to the possibilities and limits of pretreatment of industrial discharges. Again it is the editors'privilege to acknowledge the invaluable help from the authors of this book. It is the editors' hope that they might convey the significance and potential of pretreatment in water supply, in industrial waste management and in municipal wastewater treatment and sludge handling.
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:
Download or read book Solid Liquid Separation 04 written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coagulation and Flocculation in Water and Wastewater Treatment written by John Bratby and published by IWA Publishing. This book was released on 2006-10-15 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coagulation and Flocculation in Water and Wastewater Treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications. Thoroughly revised and updated since the 1st Edition it has been progressively modified and increased in scope to cater for the requirements of practitioners involved with water and wastewater treatment. A thorough gamut of treatment scenarios is attempted, including turbidity, color and organics removal, including the technical aspects of enhanced coagulation. The effects of temperature and ionic content are described as well as the removal of specific substances such as arsenic and phosphorus. Chemical phosphorus removal is dealt with in detail, Rapid mixing for efficient coagulant utilization, and flocculation are dealt with in specific chapters. Water treatment plant waste sludge disposal is dealt with in considerable detail, in an Appendix devoted to this subject. Invaluble for water scientists, engineers and students of this field, Coagulation and Flocculation in Water and Wastewater Treatment is a convenient reference handbook in the form of numerous examples and appended information.
Download or read book Biological Treatment of Industrial Wastewater written by Maulin P. Shah and published by Royal Society of Chemistry. This book was released on 2021-12-03 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Treatment of Industrial Wastewater presents a comprehensive overview of the latest advances and trends in the use of bioreactors for treating industrial wastewater.
Download or read book Activated Sludge written by N. F. Gray and published by Oxford University Press, USA. This book was released on 1990 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Determination of Air Flotation Parameters to Perform Solid Liquid Separation Treatment in an Activated Sludge Treating Grease Waste by Promoting Filamentous Bacteria written by and published by . This book was released on 2007 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this investigation was the determination of air flotation parameters to perform solid liquid separation treatment in an activated sludge treating grease waste by promoting filamentous bacteria. The treatment was intended to achieve a pretreatment level, previous to the application of the typical activated sludge process. Generally solid liquid separation in activated sludge is performed by gravitational settling, but it is been demonstrated that the presence of an overgrowth population of filamentous microorganism in activated sludges hinder the settling properties of it. For this reason, gravitational settling may result in an inefficient treatment. Therefore, an alternative treatment has to be applied. The treated waste in this project has a density lighter than water; additionally filamentous microorganisms tend to trap fine bubbles therefore causes floating. These specific conditions make air flotation a suitable alternative technology. The ranges of minimum operation for Dissolve Air Flotation (DAF) controlling parameters (air pressure, recycle rate, rise rate, air to solid ratio, and solids recovery) were determined. For this purpose a descriptive model for the treatment was developed. The research determined that the traditional gravitational settling was not adequate for separating the biomass from the liquid phase. In contrast dissolve air flotation showed that it was possible to achieve the pretreatment level (300 mg/L in the final effluent). In the analysis the correlations between the parameters under study (air pressure and recycle rate) and the response variables (rise rate, air to solid ratio, suspended solids in the subnatant, and solids recovery) were determined. With the relationships defined, the minimum ranges for the parameters of operation of a DAF unit were determined. The results showed that in order to achieve the pretreatment level air pressure should range between 45-70 psi and the recycle rate between 30-35%. All the values for the rest of the response variables were determined to be within the ranges of the typical application of DAF, therefore the same equipment used for the typical application can be used to apply this treatment under these specific conditions.
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.
