Download or read book A Study of Hydrolytic Enzymes in Activated Sludge written by R. S. Ingols and published by . This book was released on 1939 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Acid Phase Anaerobic Digestion of Municipal Sludges to Improve Biological Nutrient Removal Processes written by Antonio Albornoz and published by . This book was released on 2017 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enhanced biological phosphorus removal (EBPR) can improve the balance sheet for waste water treatment plants. However, for phosphate accumulating organisms (PAOs) to work efficiently, there needs to be a readily biodegradable carbon source as their substrate for growth. Side stream hydrolysis and acid-phase fermentation of the sludge can generate readily available carbon in the form of volatile fatty acids (VFAs). The VFAs are subsequently consumed by PAOs to support the phosphorus removal process. Phosphorus is then recovered from the waste activated sludge using various dewatering and sorting methods. This study evaluated modeling of side-stream acid-phase digestion of primary sludge to support consistent production of VFAs and thereby stabilize and optimize phosphorus removal processes. In this regard, hydrolysis processes were focused on since they are typically the rate-limiting step in anaerobic digestion. It was found that the literature fails to provide consistent information to aid in the modeling of this process, particularly with regards to the values of the hydrolysis rate constants and the sensitivity of these constants to environmental factors such as temperature, pH, and sludge composition. An experimental set up consisting of three semi-batch reactors provided data that was subsequently employed in the model evaluation. The reactors were fed with either primary sludge (PS), waste activated sludge (WAS), or a mixture of both (mixed liquor (ML)). The ML set up received 62% PS and 38% WAS by volume. The reactors were fed with sludge from the Elmira WWTP and were operated at an SRT of 6 days. Water quality parameters such as pH, NH3, COD, SS, TKN, VFA, PO4 were monitored using standard analytical methods. It was found that adding WAS to PS increased the hydrolysis of PS solids by 19% based on VFA produced by influent Total COD. BioWin model simulations employed this data to calibrate a baseline model that described the observed VFA production. It was found that traditional anaerobic hydrolysis rate expressions could not describe all data sets consistently. In an effort to improve the universality of the hydrolysis expression, two extensions for the model were considered. The product inhibition extension considered reduced hydrolysis at high VFA concentrations. This model performed well but improved with the second extension regarding enzyme concentration. It was found that including the effect of hydrolytic enzymes in the model can improve the ability of the model to predict results and it is suggested that the follow up research expands in this area to consider more specific enzymes.
Download or read book Waste Management and the Environment IV written by M. Zamorano and published by WIT Press. This book was released on 2008 with total page 961 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together papers from the Fourth International Conference on Waste Management and the Environment and will be of interest to environmental engineers, local authority representatives, waste disposal experts, research scientists in the area of waste management, civil engineers and chemical engineers.
Download or read book An Investigation of the Active Site of Some Hydrolytic Enzymes written by G. Sheppard and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sludge Reduction Technologies in Wastewater Treatment Plants written by Paola Foladori and published by IWA Publishing. This book was released on 2010-07-31 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sludge Reduction Technologies in Wastewater Treatment Plants is a review of the sludge reduction techniques integrated in wastewater treatment plants with detailed chapters on the most promising and most widespread techniques. The aim of the book is to update the international community on the current status of knowledge and techniques in the field of sludge reduction. It will provide a comprehensive understanding of the following issues in sludge reduction: principles of sludge reduction techniques; process configurations; potential performance; advantages and drawbacks; economics and energy consumption. This book will be essential reading for managers and technical staff of wastewater treatment plants as well as graduate students and post-graduate specialists.
Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1940 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1941 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miscellaneous Publication written by and published by . This book was released on 1941 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of the Regulation of Denitrification in Activated Sludge Using an Enzyme Assay written by Thomas J. Simpkin and published by . This book was released on 1986 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Extended Aeration Activated Sludge and a Modification of the Process Employing Chemical Hydrolysis of Portions of the Return Sludge written by Ping-Yi Yang and published by . This book was released on 1972 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Miracle of Eco Enzyme from Waste to Grace written by Dr. Arie Srihardyastutie, S.Si, M.Kes and published by Nas Media Pustaka. This book was released on 2024-02-12 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides comprehensive knowledge and information, starting from what underlies and makes Eco-Enzyme (EE) very important for nature and this earth, along with a guide for making EE that is easy for novice volunteers who are making EE for the first time, an explanation of how EE works to balance nature and the environment around us, to several discussions that can answer questions that often arise for those who want to know more about EE, both general questions and those that require a detailed scientific explanation.
Download or read book Wastewater Microbiology written by Gabriel Bitton and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 809 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wastewater Microbiology focuses on microbial contaminants found in wastewater, methods of detection for these contaminants, and methods of cleansing water of microbial contamination. This classic reference has now been updated to focus more exclusively on issues particular to wastewater, with new information on fecal contamination and new molecular methods. The book features new methods to determine cell viability/activity in environmental samples; a new section on bacterial spores as indicators; new information covering disinfection byproducts, UV disinfection, and photoreactivation; and much more. A PowerPoint of figures from the book is available at ftp://ftp.wiley.com/public/sci_tech_med/wastewater_microbiology.
Download or read book Bulletin written by and published by . This book was released on 1939 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carboxylic Ester Hydrolases Advances in Research and Application 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carboxylic Ester Hydrolases: Advances in Research and Application: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Carboxylic Ester Hydrolases. The editors have built Carboxylic Ester Hydrolases: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Carboxylic Ester Hydrolases in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Carboxylic Ester Hydrolases: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Download or read book Studies on the Release of Hydrolytic Enzymes from Barley Aleurone Cells written by Ru-Fang Chen and published by . This book was released on 1973 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Functional Testing of Aquatic Biota for Estimating Hazards of Chemicals written by John Cairns and published by ASTM International. This book was released on 1988 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Hydrolytic Enzyme Activities in Anaerobic Digesting Sludge written by P. G. Thiel and published by . This book was released on 1967 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
