Biological Phosphorus Removal PDF Download
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Author: P. M. J. Janssen
Publisher: IWA Publishing
ISBN: 9781843390121
Category : Science
Languages : en
Pages : 228
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Book Description
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.
Author: P. M. J. Janssen
Publisher: IWA Publishing
ISBN: 9781843390121
Category : Science
Languages : en
Pages : 228
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Book Description
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.
Author: Richard I. Sedlak
Publisher: CRC Press
ISBN: 9780873716833
Category : Technology & Engineering
Languages : en
Pages : 258
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Book Description
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.
Author: RichardI. Sedlak
Publisher: Routledge
ISBN: 1351424939
Category : Technology & Engineering
Languages : en
Pages : 258
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Book Description
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.
Author: Stanford University. Department of Civil Engineering
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
Author: Cao Ye Shi
Publisher: IWA Publishing
ISBN: 1843393816
Category : Science
Languages : en
Pages : 151
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Book Description
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
Author: Matti Valve
Publisher: Nordic Council of Ministers
ISBN: 9789291207091
Category : Water
Languages : en
Pages : 276
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Book Description
Author: Water Environment Federation
Publisher: McGraw Hill Professional
ISBN: 0071737103
Category : Technology & Engineering
Languages : en
Pages : 667
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Book Description
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
Author: Clifford W. Randall
Publisher: CRC Press
ISBN: 9780877629221
Category : Technology & Engineering
Languages : en
Pages : 454
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Book Description
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.
Author: Yanping Mao
Publisher:
ISBN: 9781361385487
Category :
Languages : en
Pages :
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Book Description
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
Author: Michael H. Gerardi
Publisher: Chemical Publishing Company
ISBN: 082060416X
Category : Technology & Engineering
Languages : en
Pages : 176
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Book Description
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. -
