Download or read book Biological Phosphorus Removal written by P. M. J. Janssen and published by IWA Publishing. This book was released on 2002-05-31 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological phosphorus (bio-P) removal has become a reliable and well-understood process within wastewater treatment, despite being one of the most complex processes in the activated sludge process. Extended fundamental and full-scale research has been carried out into the bio-P process and the state-of-the-art is described in this report. A summarising historical overview gives insight into the establishment of the appropriate microbiological and biochemical basis of the process and the development of bio-P configurations in practice. Aspects of the bio-P process that have a direct influence on the efficiency of phosphorus removal are subjected to an in-depth investigation. This report presents guidelines for design and dimensioning in order to introduce and/or optimise the bio-P process in practice. Twelve bio-P installations are extensively described and the operational results and experiences are related to existing bio-P knowledge and guidelines. Based on a number of parameters, a comparison is made between the described bio-P plants. A steady state model is verified with extensive periods of practical experience of the plants. The bio-P model, which is provided on CD-ROM (available for download here), offers a reliable insight into the bio-P process, coupled with sensitivity analyses regarding wastewater characteristics and process parameters for the anaerobic volume and the P-ortho concentration in the final effluent. The report ends with a systematic approach to the design of the bio-P process, based on the background of the bio-P process itself, much practical experience and the analysis of operational bio-P plants. Also presented is a systematic approach to tackle operational aspects of the bio-P process in order to generate an acceptable low P effluent concentration. This optimisation of the bio-P process operation is supported by a decision diagram. Biological Phosphorus Removal will be an invaluable source of information for all those concerned with wastewater treatment, including plant managers, process designers, consultants and researchers.
Download or read book Phosphorus and Nitrogen Removal from Municipal Wastewater written by Richard I. Sedlak and published by CRC Press. This book was released on 1991-10-07 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This valuable new book offers practical guidance regarding the design and operation of systems for reducing effluent nitrogen and phosphorus. The principles of nitrogen and phosphorus removal are discussed, including sources of nitrogen and phosphorus in wastewater, removal options, nitrogen and phosphorus transformations in treatment, process selection, and treatment. The book also covers the design and operation of nitrogen and phosphorus removal systems, including system options, system design, facility design, facility costs, and operation. Practical case studies are provided as examples of successful system implementations that may be able to help you decide what will work best in your plant.
Download or read book Phosphorus and Nitrogen Removal from Municipal Wastewater written by RichardI. Sedlak and published by Routledge. This book was released on 2018-04-27 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This valuable new book offers practical guidance regarding the design and operation of systems for reducing effluent nitrogen and phosphorus. The principles of nitrogen and phosphorus removal are discussed, including sources of nitrogen and phosphorus in wastewater, removal options, nitrogen and phosphorus transformations in treatment, process selection, and treatment. The book also covers the design and operation of nitrogen and phosphorus removal systems, including system options, system design, facility design, facility costs, and operation. Practical case studies are provided as examples of successful system implementations that may be able to help you decide what will work best in your plant.
Download or read book Phosphorus and Nitrogen Removal by Biological Systems written by Stanford University. Department of Civil Engineering and published by . This book was released on 1970 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Phosphorus Removal Activated Sludge Process in Warm Climates written by Cao Ye Shi and published by IWA Publishing. This book was released on 2011-03-15 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special Offer: Cao Ye Shi Author Set - Buy all three books together and save a total £76! Biological Phosphorus Removal Activated Sludge Process in Warm Climates presents the results of detailed research on the Enhanced Biological Phosphorus Removal (EBPR) activated sludge process under warm climate conditions (20oC - 30oC), which is part of the R & D program of Public Utilities Board (PUB) Singapore. The investigations and studies presented in this book are application-oriented, but at the same time the studies aim at an insightful understanding of the EBPR with the knowledge of the latest development in academic field. The focus points are: EBPR performance of laboratory-scale and full-scale activated sludge processes under the site conditions in warm climates The carbon competition and distribution between PAO and GAO (and denitrifiers) in the process The stoichiometry and kinetics of P-release, COD uptake in the anaerobic environment and P-uptake in the aerobic environment under different temperatures and operating conditions PAO and GAO population fractions, shift and dominance studies using FISH and batch tests The inter-relationships between the system performance, process design and the microbial community EBPR for industrial wastewater (high ratio of feed COD/P) treatment under warm climates. Together with the preceding book – Biological Nitrogen Removal Activated Sludge Process in Warm Climates – published by IWA in 2008, this book fills the gap of biological nutrient (nitrogen and phosphorus) removal in warm climates and provides unique experiences and knowledge for Process and design researchers and engineers in wastewater research, students and academic staff in Civil/Sanitation/Environment Departments, as well as Managers, Engineers and Consultants in water companies and water utilities. Visit the IWA WaterWiki to read and share material related to this title: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/SELECTIONOFDOMESTICWASTEWATERTREATMENTSYSTEMSINWARMCLIMATEREGIONS
Download or read book Nitrogen Removal from Municipal Wastewater written by Matti Valve and published by Nordic Council of Ministers. This book was released on 1995 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Removal WEF MOP 34 written by Water Environment Federation and published by McGraw Hill Professional. This book was released on 2010-09-28 with total page 667 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Latest Methods for Nutrient Removal from Wastewater This Water Environment Federation resource provides comprehensive information on biological and chemical methods for nitrogen and phosphorus removal from wastewater. Nutrient Removal covers environmental and regulatory issues and provides an integrated approach for combined nitrogen and phosphorus removal, including details on ammonia and dewatering liquors treatment. Natural treatment systems are also discussed in this definitive guide. Nutrient Removal covers: Nutrients and their effects on the environment Regulation of nutrients in the effluents of wastewater treatment plants Overview of the nutrient removal processes Principles of biological nitrogen removal Nitrification Nitrogen removal processes, configuration, and process-sizing criteria for combined nitrification and denitrification processes Chemical and biological phosphorus removal Sidestream nitrogen removal Structured process models for nutrient removal Troubleshooting for full-scale nutrient removal facilities Aquatic natural treatment systems
Download or read book Design and Retrofit of Wastewater Treatment Plants for Biological Nutritient Removal written by Clifford W. Randall and published by CRC Press. This book was released on 1998-05-06 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents information that can be used for the design and operation of wastewater treatment plants that utilize biological nutrient removal processes, i.e., processes that utilize biological mechanisms instead of chemical mechanisms, to remove phosphorus and nitrogen from wastewaters. The book provides: basic fundamentals, concepts, and theories; design of prefermentation units, various types of BNR systems, and secondary clarifiers; retrofitting conventional activated sludge plants; modeling considerations; and special considerations for BNR systems. It includes full-scale and pilot plant case histories, design examples, and retrofit of existing plants.
Download or read book Biological Removal of Phosphorus and Nitrogen from Wastewater written by Yanping Mao and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Biological Removal of Phosphorus and Nitrogen From Wastewater: New Insights From Metagenomic and Metatranscriptomic Approaches" by Yanping, Mao, 毛艷萍, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: The study was conducted to reveal the insights of microbial diversity, functional profile and gene expression of microorganisms responsible for enhanced biological phosphorus removal (EBPR) and hydrogen-oxidizing autotrophic denitrification mainly by using metagenomic and metatranscriptomic analysis based on high-throughput sequencing. Two sequencing batch reactors (SBRs) were operated to remove phosphorus (15 mg/L) from synthetic wastewater. The integrated metagenomic and metatranscriptomic approaches were adopted to retrieve a nearly complete draft genome of Candidatus Accumulibacter phosphatis (referred to Accumulibacter) in Clade IB (CAP IB HKU-1) from one of the SBRs treating saline wastewater. The CAP IB HKU-1 draft genome, being different from CAP IIA UW-1, does not possess the phosphotransferase in polyphosphate metabolism and V-ATPase for orthophosphate transport. Additionally, unlike CAP IA UW-2, CAP IB HKU-1 carries the genes for carbon fixation and nitrogen fixation. The metatranscriptomic results revealed that the most significantly up-regulated genes in CAP IB HKU-1 from the anaerobic to the aerobic phase were responsible for assimilatory sulfate reduction, genetic information processing and phosphorous absorption, while the down-regulated genes were involved in N2O reduction, PHA synthesis and acetyl-CoA formation. From another SBR, a draft genome affiliated to Accumulibacter Clade IIC (CAP IIC HKU-2) was reconstructed using two metagenomic sequence data sets. Comparative genomic analysis demonstrated that Accumulibacter of Clades IA, IB, IIA and IIC conserved the genes encoding for enzymes in glycolysis, the TCA cycle, acetate uptake, PHA synthesis and polyP metabolism, but differed in the abilities of nitrate reduction, nitrogen fixation and carbon fixation. The abundances of the Accumulibacter clades in 18 activated sludge (AS) samples from the globally distributed sewage treatment plants (STPs) were quantified by the qPCR-ppk1 assay. Clades IIC and IID were found to be dominant among the five Accumulibacter clades in 11 AS samples. And two novel Accumulibacter Clades IIH and II-I were identified. The results indicated that the wastewater characteristics could be more important to determine the proliferation of Accumulibacter clades in STP AS systems rather than the geographic location. Geographical distribution of putative polyphosphate accumulating organisms (PAOs) and glycogen accumulating organisms (GAOs) among 14 globally located STPs and their monthly microbial variation in AS of Sha-Tin STP over five years were studied by using 16S rRNA gene pyrosequencing. The structure of EBPR-related microbial community should be the result of interaction of multiple operational variables and wastewater characteristics. Thauera-dominated (with relative abundances of 47% - 62%) microbial communities carrying out hydrogenotrophic denitrification were successfully enriched from various seed sludges and characterized by 16S rRNA gene Illumina high-throughput sequencing. Nitrogen removal rates of the enriched culture were comparable to that of the model organism Paracoccus denitrificans. A genome binning pipeline was proposed to retrieve the dominant genome from an enriched hydrogenotrophic denitrifying consortium using metagenomic sequence data. A draft genome (Thauera R4) affiliated with a novel Thauera
Download or read book An Operator s Guide to Biological Nutrient Removal BNR in the Activated Sludge Process written by Michael H. Gerardi and published by Chemical Publishing Company. This book was released on 2016-05-19 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents - List of Tables - List of Figures - PART ONE: NITRIFICATION - Chapter 1 Introduction - Chapter 2 Nitrogenous and Phosphorous Compounds - Chapter 3 Nitrification: The Basics - Chapter 4 Nitrifying Bacteria - Chapter 5 Nitrification and Limiting Factors - Chapter 6 Promoting Nitrification - PART TWO: DENITRIFICATION - Chapter 7 Denitrification: The Basics - Chapter 8 Denitrifying Bacteria - Chapter 9 Denitrification and Limiting Factors - PART THREE: BIOLOGICAL PHOSPHORUS REMOVAL - Chapter 10 Biological Phosphorus Removal: The Basics - Chapter 11 EBPR: Process Control - Abbreviations and Acronyms - Glossary - Bibliography - Biological nutrient removal (BNR), the removal of nitrogen and phosphorus from wastewater, is a complex process. Although the activated sludge process is an efficient technology for the removal of biochemical oxygen demand (BOD) and total suspended solids (TSS), it provides less-than-optimal conditions for the removal of nitrogen and phosphorus, and presents numerous challenges to the operator trying to satisfy the many requirements for several different groups of bacteria. In addition to satisfying the requirements there are numerous, highly variable operational conditions that impact BNR. These conditions include: changes in strength and composition of the wastewater, alkalinity and pH, temperature, and presence of inhibitory and toxic wastes. Even fluctuations in flows, especially from inflow and infiltration, can adversely impact the aerobic, anoxic, and anaerobic conditions needed for successful BNR. Of the three treatment processes, nitrification, denitrification, and enhanced biological removal, nitrification is often the most difficult to achieve. Therefore, a large portion of this book reviews nitrification. Operators of the activated sludge process need to understand the basic biological, chemical, and physical requirements for BNR in order to improve the performance of these treatment processes. An Operator's Guide to Biological Nutrient Removal (BNR) in the Activated Sludge Process is intended to help operators in the monitoring, troubleshooting, and process control of BNR. Numerous tables and figures are included in the book to help the operator understand the biological and chemical reactions that are involved in BNR processes and how the reactions can be monitored for process control. Design of BNR processes is not addressed in this book. Design is addressed in numerous engineering publications. The book serves to help operators achieve permit compliance for nitrogen and phosphorus discharge limits and obtain cost-effective operation. -
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.
Download or read book Biological Removal of Phosphorus and Nitrogen from Wastewater written by 毛艷萍 and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optimization of Biological Nitrogen and Phosphorus Removal in A2 O Wastewater Treatment Processes written by Changyong Wu and published by Nova Science Publishers. This book was released on 2021 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Anaerobic-anoxic-oxic (A2/O) is one of the most widely used processes in municipal wastewater treatment plants for simultaneous biological nitrogen and phosphorus removal. The A2/O process has many advantages, such as simple configuration and short hydraulic retention time (HRT), etc. In addition, it is easy to operate. Therefore, A2/O will be continuously chosen as the main option in all kinds of newly designed and built wastewater treatment plants. Though the A2/O process has been used widely, it has some inherent contradictions which are difficult to overcome. For example, the contradiction between substrate competition and SRT makes the high nitrogen and phosphorus removal unable to be achieved simultaneously. As a result, the removal efficiency of the system cannot be further improved. In the past 10 years in China, the wastewater quality very obviously changed with the improvement of living conditions. At present, municipal wastewater with a low C/N ratio is rather common in most countries in the world. The lack of a carbon source will make the inherent contradictions of the A2/O process becomes serious. Therefore, the conventional design parameters of the A2/O process are needed to adjust or the configuration of the A2/O process should change to fit the change of the wastewater quality. According to this, this book systematically describes how to improve the nitrogen and phosphorus removal efficiency of municipal wastewater with low C/N ratio, and effectively utilize the carbon resource in the influent of wastewater. This publication is useful for students, researchers and engineers whose major focus is municipal and the environment"--
Download or read book Aerobic Granular Sludge written by S. Bathe and published by IWA Publishing. This book was released on 2005-03-31 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerobic Granular Sludge has recently received growing attention by researchers and technology developers, worldwide. Laboratory studies and preliminary field tests led to the conclusion that granular activated sludge can be readily established and profitably used in activated sludge plants, provided 'correct' process conditions are chosen. But what makes process conditions 'correct'? And what makes granules different from activated sludge flocs? Answers to these question are offered in Aerobic Granular Sludge. Major topics covered in this book include: Reasons and mechanism of aerobic granule formation Structure of the microbial population of aerobic granules Role, composition and physical properties of EPS Diffuse limitation and microbial activity within granules Physio-chemical characteristics Operation and application of granule reactors Scale-up aspects of granular sludge reactors, and case studies Aerobic Granular Sludge provides up-to-date information about a rapidly emerging new technology of biological treatment.
Download or read book Bioelectrochemical Systems written by Korneel Rabaey and published by IWA Publishing. This book was released on 2009-12-01 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the context of wastewater treatment, Bioelectrochemical Systems (BESs) have gained considerable interest in the past few years, and several BES processes are on the brink of application to this area. This book, written by a large number of world experts in the different sub-topics, describes the different aspects and processes relevant to their development. Bioelectrochemical Systems (BESs) use micro-organisms to catalyze an oxidation and/or reduction reaction at an anodic and cathodic electrode respectively. Briefly, at an anode oxidation of organic and inorganic electron donors can occur. Prime examples of such electron donors are waste organics and sulfides. At the cathode, an electron acceptor such as oxygen or nitrate can be reduced. The anode and the cathode are connected through an electrical circuit. If electrical power is harvested from this circuit, the system is called a Microbial Fuel Cell; if electrical power is invested, the system is called a Microbial Electrolysis Cell. The overall framework of bio-energy and bio-fuels is discussed. A number of chapters discuss the basics – microbiology, microbial ecology, electrochemistry, technology and materials development. The book continues by highlighting the plurality of processes based on BES technology already in existence, going from wastewater based reactors to sediment based bio-batteries. The integration of BESs into existing water or process lines is discussed. Finally, an outlook is provided of how BES will fit within the emerging biorefinery area.
Download or read book Biological Nutrient Removal BNR Operation in Wastewater Treatment Plants WEF Manual of Practice No 30 written by Water Environment Federation and published by McGraw Hill Professional. This book was released on 2006 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: MOP 109 & WEF MOP 30 describes the theory, equipment, and practical techniques needed to optimize BNR in varied environments.
Download or read book Biological Removal of Nitrogen and Phosphorus from Municipal Wastewater written by Pat McCourt and published by . This book was released on 1991 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
