Download or read book Activated Sludge Kinetic Parameter Determination by Extant Respirometry written by Michael P. Johnson and published by . This book was released on 2006 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting Monod Kinetic Parameters Obtained by Extant Respirometry and Their Implications for Activated Sludge Process Engineering written by Sean E. Scuras and published by . This book was released on 2004 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Operation of Activated Sludge Processes Using Respirometry written by Alan Rozich and published by CRC Press. This book was released on 1992-02-03 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough overview of respirometry and its scientific and engineering basis. The book describes the fundamentals of biological waste treatment, development of predictive models for system design and operation, and how respirometry fits in with these operations. It also presents case studies, which give you concrete examples of the application of respirometry. This book will help activated sludge process control designers, operators, and managers of biological wastewater treatment facilitieslearn how to improve methods for the analysis of biological wastewater systems, enhance design and treatability projects, optimize and troubleshoot plant operations, and accurately predict the impact of new loads or streams on biological wastewater facilities.
Download or read book Respirometry in Control of the Activated Sludge Process written by Henri Spanjers and published by IWA Publishing. This book was released on 1998-01-01 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ebook only (available soon) The report describes the principles of measurement of respiration rate, the transformation of measurement data into other types of information, and the application of the obtained information in process control strategies. Some fundamental concepts on biological respiration and process control are provided to assist the reader with understanding the principles. A structured overview comprises some eighty control strategies in which respirometry plays a role. To enable the reader to consult the information sources, an extensive literature list of over 500 references in included and classified into six themes. Contents Fundamentals of Respiration Measuring Principles Measured and Deduced Variables Elementary Control Concepts Respirometry in Control of the Activated Sludge Process Summary and Perspectives. Scientific and Technical Report No.7 Also Available Respirometry in Control of the Activated Sludge Process: Benchmarking Control Strategies
Download or read book Respirometry for Environmental Science and Engineering written by James C. Young and published by S & J Publishing Company. This book was released on 2004 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Wastewater Treatment written by C. P. Leslie Grady Jr. and published by CRC Press. This book was released on 2011-05-09 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following in the footsteps of previous highly successful and useful editions, Biological Wastewater Treatment, Third Edition presents the theoretical principles and design procedures for biochemical operations used in wastewater treatment processes. It reflects important changes and advancements in the field, such as a revised treatment of the micr
Download or read book Respirometry of Activated Sludge written by Milenko Ros and published by CRC Press. This book was released on 1993-03-01 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biotechnology for the Environment Wastewater Treatment and Modeling Waste Gas Handling written by Spiros Agathos and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the dawn of the 21st century, biotechnology is emerging as a key enabling technology for sustainable environmental protection and stewardship. Biotechnology for the Environment: Wastewater Treatment and Modeling, Waste Gas Handling illustrates the current technological applications of microorganisms in wastewater treatment and in the control of waste gas emissions. In the first section of the book special emphasis is placed on the use of rigorous mathematical and conceptual models for an in-depth understanding of the complex biology and engineering aspects underlying the operation of modern wastewater treatment installations. The second part addresses waste gas biofiltration, an expanding biotechnological application of microbial metabolism for air quality assurance through processes ranging from the abatement of hazardous volatile pollutants to the elimination of nuisance odors. It will be a valuable reference source for environmental scientists, engineers and decision makers involved in the development, evaluation or implementation of biological treatment systems. For more information on Strategy and Fundamentals, see Focus on Biotechnology, Volume 3A, and for more information on Soil Remediation, see Focus on Biotechnology, Volume 3B.
Download or read book Extant Biodegradation Testing with Linear Alkylbenzene Sulfonate and Alkyl Sulfate in Laboratory and Field Activated Sludge System written by Xiaohong Huang and published by . This book was released on 2000 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present work was aimed at determining the efficacy of the extant respirometric technique to measure the biodegradation kinetic parameters of surfactant linear alkylbenzene sulfonate (LAS) and alkyl sulfate (AS) in laboratory and field activated sludge systems. LAS and AS are most common used in the commercial and personal usage and present in the influent of the wastewater treatment plant. To simulate the activated sludge system, two 1-L porous pot (65 [Mu] stainless steel mesh) reactors were fed synthetic wastewater with a COD of 200 mg/L including 2 mg/L LAS and 1 mg/L AS to cultivate the activated sludge for respirometer tests. To evaluate the influence of the operating conditions, the reactors were operated in parallel at a range of HRT and SRT conditions. The biodegradation responses of LAS were measured using a respirometric method, and the extant kinetic parameters were evaluated using the Monod model.
Download or read book Hazardous and Industrial Waste Proceedings 31st Mid Atlantic Conference written by Nik Nikolaidis and published by CRC Press. This book was released on 1999-06-17 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hazardous Pollutants in Biological Treatment Systems written by Ferhan Çeçen and published by IWA Publishing. This book was released on 2017-11-15 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hazardous pollutants are a growing concern in treatment engineering. In the past, biological treatment was mainly used for the removal of bulk organic matter and the nutrients nitrogen and phosphorous. However, relatively recently the issue of hazardous pollutants, which are present at very low concentrations in wastewaters and waters but are very harmful to both ecosystems and humans, is becoming increasingly important. Today, treatment of hazardous pollutants in the water environment becomes a challenge as the water quality standards become stricter. Hazardous Pollutants in Biological Treatment Systems focuses entirely on hazardous pollutants in biological treatment and gives an elaborate insight into their fate and effects during biological treatment of wastewater and water. Currently, in commercial and industrial products and processes, thousands of chemicals are used that reach water. Many of those chemicals are carcinogens, mutagens, endocrine disruptors and toxicants. Therefore, water containing hazardous pollutants should be treated before discharged to the environment or consumed by humans. This book first addresses the characteristics, occurrence and origin of hazardous organic and inorganic pollutants. Then, it concentrates on the fate and effects of these pollutants in biological wastewater and drinking water treatment units. It also provides details about analysis of hazardous pollutants, experimental methodologies, computational tools used to assist experiments, evaluation of experimental data and examination of microbial ecology by molecular microbiology and genetic tools. Hazardous Pollutants in Biological Treatment Systems is an essential resource to the researcher or the practitioner who is already involved with hazardous pollutants and biological processes or intending to do so. The text will also be useful for professionals working in the field of water and wastewater treatment.
Download or read book The Microbiology of Activated Sludge written by Robert J. Seviour and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Procedures and Practices in Activated Sludge Process Control written by Robert M. Arthur and published by Butterworth-Heinemann. This book was released on 1983 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Calibration of Bio kinetic Models for Organic Carbon and Nitrogen Biodegradation in an Aerobic Activated Sludge System written by Muhammad Azizul Hoque and published by . This book was released on 2010 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substrate removal mechanisms in a mixed culture of an activated sludge system are still a mystery that researchers have been trying to unravel by proposing and developing models to interpret the observed experimental data. Activated Sludge Model Number 1 (ASM1) was first introduced to better understand the biochemical mechanisms during carbon and nitrogen oxidation and was based on the assumption that the external substrate is consumed only for biomass growth. This model ignored the formation of intracellular polymers (storage products) in the biomass cell, though several researchers observed the phenomenon of storage of carbon sources and the significant role it played in the carbon removal process. As a consequence, the Activated Sludge Model Number 3 (ASM3) was formulated assuming that all the easily biodegradable substrate is first stored internally during the feast phase before being used for growth during famine conditions. However, experimental observations proved that both storage and growth occur simultaneously during the feast phase. Consequently, the simultaneous storage and growth (SSAG) model was developed as an extension to ASM3 specifically to gain an in-depth understanding of the carbon oxidation process. While considerable investigation has been focused on model calibration using respirometric measurements of the oxygen uptake rate (OUR) during the aerobic biodegradation of substrate, model-based interpretation of titrimetric measurements has been limited. In biological systems, the oxygen consumption and corresponding pH changes occur simultaneously and can be easily monitored using respirometric and titrimetric experimental observations respectively. Attempts were, therefore, made to calibrate ASM1 using titrimetric measurements. During the subsequent successful development, consideration was given to the pH effects of carbon uptake, ammonia uptake for growth, CO2 production from carbon metabolism and the nonlinear carbon dioxide transfer rate (CTR) due to stripping. While respirometry was successfully used to calibrate every proposed new model, the interpretation of titrimetric measurements, however, was always based on ASM1, using calibration substrates such as acetate and ammonium. The SSAG model, developed in the year 2005, proposed an improved kinetic expression for the degradation of storage products under famine conditions. It was successfully calibrated using on-line respirometric measurements and validated using off-line storage products measurements with acetate used as a calibration substrate. However it failed to explain the titrimetric behavior of the substrate biodegradation process. While in most cases the above models were calibrated using simple synthetic substrates, the application of these models for complex substrates was not investigated. Therefore, in this dissertation, the biodegradation kinetics for different substrates like acetate (simple carbon source), sodium dodecyl sulfate (relatively complex carbon source), ammonium (simple nitrogen source), urea (relatively complex nitrogen source) and glutamic acid (combination of carbon and nitrogen) were investigated. A titrimetric respirometer, established in the Water-waste laboratory in the Faculty of Engineering and Surveying, University of Southern Queensland, Australia, was used to conduct batch experiments in order to monitor substrate biodegradation process in an aerobic activated sludge system. Both the dissolved oxygen and the pH control data were logged with the Labview software package. A spreadsheet program was used to calculate the oxygen uptake rate and the proton production/consumption rate from the raw measurements. During batch experiments, the biodegradation of all five test substrates showed unique respirometric and titrimetric behaviors indicating that each of these compounds is biodegraded using distinctive mechanisms with the involvement and coordination of different bacterial populations. The pattern of OURs were observed varying from substrate to substrate describing the characteristics of test compounds. The titrimetric profiles were also different for different substrates biodegradation reflecting the on-going biochemical reaction of respective substrate in activated sludge system. While acetate biodegradation, for example, caused proton consumption (at pH 7.8) in the liquid medium, proton production was noted under feast conditions when either sodium dodecyl sulfate or glutamic acid was used as a test substrate. An in-depth revision of the existing activated sludge models was completed and the models were assessed using experimental observations. An improved bio-kinetic model which includes both the oxygen and proton balances for the biodegradation of each of the test substrates was then developed. In addition, the substrates biodegradation pathway and the non-linear CO2 transfer process were considered during the modeling. For proper model evaluation, the proposed model was calibrated using varying initial substrate concentrations and pH levels. In addition, three different calibration approaches: using respirometric measurements alone, using titrimetric measurements alone and using combined respirometric-titrimetric measurements, were applied during the study. The estimation of model parameters was undertaken using non-linear techniques utilizing the algorithms in the optimisation toolbox (MATLAB). For the biodegradation of each test substrate, the proposed model was successfully calibrated using both the respirometric and titrimetric behaviors in the activated sludge system. The estimated model parameters showed consistent results for all three calibration approaches thereby confirming the precision of the proposed model. The parameter estimation errors (calculated for 95% confidence intervals) as well as the mean squared errors for the different calibration approaches were quite reasonable and confirmed the statistical soundness of the proposed model. In addition, the proposed model was validated using off-line measurements. This dissertation presents an in-depth explanation of how the proposed models interpret the biodegradation processes and how the model parameters vary for different substrates in an activated sludge system. The results will be helpful in further refining current models that can contribute to the optimization of the design operation and enhanced performance of full scale wastewater treatment plants.
Download or read book Master s Theses Directories written by and published by . This book was released on 2007 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Download or read book Respirometry in Control of the Activated Sludge Process written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
