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A Study Of The Mechanisms Governing Polyphosphate Formation In Activated Sludge Exhibiting Enhanced Phosphorus Removal
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Book Synopsis A Study of the Mechanisms Governing Polyphosphate Formation in Activated Sludge Exhibiting Enhanced Phosphorus Removal by : Shuh-Ren Jing
Download or read book A Study of the Mechanisms Governing Polyphosphate Formation in Activated Sludge Exhibiting Enhanced Phosphorus Removal written by Shuh-Ren Jing and published by . This book was released on 1991 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Phosphate Removal from Wastewaters by : R. Ramadori
Download or read book Biological Phosphate Removal from Wastewaters written by R. Ramadori and published by Elsevier. This book was released on 2017-01-31 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Phosphate Removal from Wastewaters contains the proceedings of an International Association on Water Pollution Research and Control Specialized Conference held in Rome, Italy on September 28-30, 1987. Contributors review advances that have been made in the removal of biological phosphates from wastewaters, both at the fundamental scientific level and in the practical application of the process. Topics range from the fundamental microbiology and biochemistry of the enhanced biological removal of phosphate to the practical full-scale plant experiences with phosphorus removal and sludge handling from such processes. This text is comprised of 43 chapters; the first of which describes the utilization of polyphosphate as an energy reserve in Acinetobacter sp. and activated sludge. Attention then turns to metabolic control in polyphosphate-accumulating bacteria and its role in enhancing biological phosphate removal. The biochemistry and energetics of biological phosphorus removal are also considered. The next section is devoted to process modeling and includes chapters that explore the kinetics of biological excess phosphorus removal; factors affecting anaerobic stabilization during biological phosphorus removal; and the behavior of magnesium in biological phosphate removal. In the next section, bench/pilot-scale studies are presented; one of which investigated the reduction of returned phosphorus from a sludge treatment process. The book concludes with a discussion on phosphate removal mechanisms and pilot- and full-scale experiences. This book will be of interest to students, practitioners, and policymakers in water pollution control.
Book Synopsis An Investigation of Phosphorus Removal Mechanisms in Activated Sludge Systems by : W. E. Morgan
Download or read book An Investigation of Phosphorus Removal Mechanisms in Activated Sludge Systems written by W. E. Morgan and published by . This book was released on 1972 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus Removal from Wastewater by : Robert P.G. Bowker
Download or read book Phosphorus Removal from Wastewater written by Robert P.G. Bowker and published by William Andrew. This book was released on 1990-12-31 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information presented first by the US EPA in September 1987, in Design manual--phosphorus removal. The manual is oriented toward design methods and operating procedures. Cost information from actual phosphorus-removing installations is presented when available. Planning level cost estimates are also included. Annotation copyrighted by Book News, Inc., Portland, OR
Book Synopsis An Investigation of Phosphorus Removal Mechanisms in Activated Sludge Systems by : W. E. Morgan
Download or read book An Investigation of Phosphorus Removal Mechanisms in Activated Sludge Systems written by W. E. Morgan and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus Removal Mechanisms in the Activated Sludge Process by : John Thomas Riding
Download or read book Phosphorus Removal Mechanisms in the Activated Sludge Process written by John Thomas Riding and published by . This book was released on 1977 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Enhanced Biological Phosphorus Removal at Different Temperatures by : Liang-Ming Whang
Download or read book Investigation of Enhanced Biological Phosphorus Removal at Different Temperatures written by Liang-Ming Whang and published by . This book was released on 2002 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1992 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus-recovery from Waste Activated Sludge (WAS) in Enhanced Biological Phosphorus Removal (EBPR) Processes by : Yuqi Wang
Download or read book Phosphorus-recovery from Waste Activated Sludge (WAS) in Enhanced Biological Phosphorus Removal (EBPR) Processes written by Yuqi Wang and published by . This book was released on 2014 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus is an essential element for every living organism, but when it exceeds certain limit in water bodies, it will cause serious environmental issues, such as eutrophication. P accumulation in water bodies can be caused by non-point sources, such as agriculture land runoff, as well as from point sources such as wastewater effluent discharges. In order to avoid eutrophication of water bodies the regulatory agency have traditionally pushed for the removal of phosphorus at wastewater treatment plants rather than regulating the non-point sources; this has been done imposing strict limits on wastewater effluents to natural watershed. At the same time, phosphorus stock on the earth is a limited resource, and its quantity is decreasing steadily, due to its use in the fertilizers production. In order to support the population growth on the earth, phosphorus recovery, especially from wastewater streams has to be considered. Biological processes that remove phosphorus from wastewater, are called Enhanced Biological Phosphorus Removal (EBPR in short) processes, and produce a P rich sludge that can be treated to recover phosphorus in forms that could be used as fertilizers. Several processes have been developed to recover P from EBPR plants, such as Waste Activated Sludge Stripping to Remove Internal Phosphorus (WASSTRIP) and the PhoStrip processes. P recovery within EBPR plant often involved an anaerobic holding tank, where P is released due to PAO activity as well as bacteria decay. However, the impact of EBPR process operating conditions on P-release capacity and kinetics are not fully understood. In addition, it is largely unclear how the anaerobic digestion process of the P-recovery process affects the microbial population, and therefore the EBPR activity in the mainstream, in system where the sludge is recirculated back to the mainstream. In this study, P-release capacity and kinetics were studied by conducting day long endogenous anaerobic digestion tests on activated sludge withdrawn from lab scale sequencing batch reactors operating under different conditions (COD/P and SRT). P-release mechanisms during the digestion test were investigated by Live/Dead analysis, as well as soluble metal ion concentration measurements, which are usually associated with EBPR activity. In addition, PAO activities changes were explored by the microbial population quantification, combined with P-release rate in the present of VFA. Considering the microbial populations, in the acetate fed SBRs are different in quantity and possibly composition, from the population (especially PAOs) in full-scale samples, the same anaerobic test and measurements were performed on a full-scale EBPR WWTP WAS samples. Under anaerobic starvation conditions, it was observed that low COD:P ratio with 10-20 days-SRT had better P recovery potential than other operation conditions involved in this study, in terms of higher amount ortho-P released and faster releasing rate. Among the released ortho-P during the digestion test, majority of it was found to be due by poly-P depletion. In addition, because of the reducing intercellular polymer storage, PAO activity also decreased significantly during the anaerobic digestion test. However, with different population and composition, PAO activity in full scale WAS samples actually increased after the test.
Book Synopsis The Fate of Phosphorus in Sewage Treatment Processes. Ii. Mechanism of Enhanced Phosphate Removal by Activated Sludge, by Arnold B. Menar and David Jenkins by : Arnold B. Menar
Download or read book The Fate of Phosphorus in Sewage Treatment Processes. Ii. Mechanism of Enhanced Phosphate Removal by Activated Sludge, by Arnold B. Menar and David Jenkins written by Arnold B. Menar and published by . This book was released on 1968 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design Manual written by and published by . This book was released on 1987 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanism of Phosphorus Removal in the Activated Sludge Process by : Jia-Chyi Lan
Download or read book The Mechanism of Phosphorus Removal in the Activated Sludge Process written by Jia-Chyi Lan and published by . This book was released on 1982 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Microscopic Study of Phosphorous Removal Process in an Activated Sludge System by :
Download or read book Microscopic Study of Phosphorous Removal Process in an Activated Sludge System written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: USEPA is currently establishing requirements for minimizing discharges of nutrients in the nation's receiving waters. The enhanced biological phosphorus removal (EBPR) process is based on the poly-phosphate accumulating organisms' (PAOs unique features of luxury phosphate uptake during aerobic conditions and phosphate release in anaerobic conditions. The objective of this study was to investigate the EBPR process at three different levels: full scale and pilot scale level, micro level and molecular level. Two Cincinnati MSD wastewater water treatment plants(WWTPs), the Mill Creek Plant and the Sycamore Creek Plant, as well as a WWTP in Butler County, were chosen to be the research sites. Water qualities were monitored along each treatment process, and activated sludge samples were taken from each plant for micro and molecular level studies. Pilot plants were operated at each plant to evaluate alternative operation modes to achieve the optimum phosphorus removal rate. Operation and design suggestions were made based on the full scale investigation and were confirmed through the pilot plant study. A phosphate-selective microelectrode was developed in this research and used to obtain P-profiles across activated sludge flocs. This cobalt-based phosphate ion-selective microelectrode has a tip diameter of 5︢︣20 þm and shows good selectivity towards all three forms of ortho-phosphate ions, H2PO4-, HPO42-, and PO43-. A calibration curve at pH 7.5 with a slope of 31.5 mV per decade change of concentration and a R2 value of 0.99 was obtained. A P peak was found in each P profile of flocs taken from the anaerobic sections at the different treatment plants. This phenomenon could be caused by the DO profile present (lowest DO at the center) or by mass transfer resistance. Fluorescent in situ hybridization (FISH) was used as a molecular biological tool to show the existence of PAOs in the activated sludge. Three oligonucleotide probes used in this study-PAO651, PAO846 and Rhc0439-were purchased from the DNA core-lab at the University of Cincinnati. The images showed the existence of PAOs at the Mill Creek and the Butler County plant.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1991 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Research written by and published by . This book was released on 1985 with total page 834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phosphorus: Polluter and Resource of the Future by : Christian Schaum
Download or read book Phosphorus: Polluter and Resource of the Future written by Christian Schaum and published by IWA Publishing. This book was released on 2018-03-15 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book provides an up-to-date and international approach that addresses the Motivations, Technologies and Assessment of the Elimination and Recovery of Phosphorus from Wastewater. This book is part of the Integrated Environmental Technology Series.
Book Synopsis Inorganic Polyphosphates by : Heinz C. Schröder
Download or read book Inorganic Polyphosphates written by Heinz C. Schröder and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic polyphosphates - polymers of orthophosphate linked by high-energy phosphoanhydride bonds - have been found in apparently all forms of life, from bacteria, yeasts and fungi to higher plants and animals. These polymers, which had been neglected for a long time, have become a fascinating area of research in the last few years. This volume summarizes the present state of knowledge about the metabolism and function of inorganic polyphosphates. In addition, the methods to study these polymers as well as the biotechnological applications of inorganic polyphosphates are described. The 15 chapters of this volume, dealing with different aspects of polyphosphate research, are written by experts in the field. This book represents a valuable source of information not only for researchers working on this subject, but also for scientists interested in fundamental aspects of cell and energy metabolism.
