Nitrous Oxide Emissions From Wastewater Treatment

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Aerobic Granular Sludge

Author : S. Bathe
Publisher : IWA Publishing
ISBN 13 : 9781843395096
Total Pages : 186 pages
Book Rating : 4.3/5 (95 download)

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Book Synopsis Aerobic Granular Sludge by : S. Bathe

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.

Activated Sludge Models

Author : The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment
Publisher : IWA Publishing
ISBN 13 : 9781900222242
Total Pages : 132 pages
Book Rating : 4.2/5 (222 download)

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Book Synopsis Activated Sludge Models by : The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment

Download or read book Activated Sludge Models written by The IWA Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment and published by IWA Publishing. This book was released on 2000-05-31 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been produced to give a total overview of the Activated Sludge Model (ASM) family at the start of 2000 and to give the reader easy access to the different models in their original versions. It thus presents ASM1, ASM2, ASM2d and ASM3 together for the first time. Modelling of activated sludge processes has become a common part of the design and operation of wastewater treatment plants. Today models are being used in design, control, teaching and research. Contents ASM3: Introduction, Comparison of ASM1 and ASM3, ASM3: Definition of compounds in the model, ASM3: Definition of processes in the Model, ASM3: Stoichiometry, ASM3: Kinetics, Limitations of ASM3, Aspects of application of ASM3, ASM3C: A Carbon based model, Conclusion ASM 2d: Introduction, Conceptual Approach, ASM 2d, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Limitations, Conclusion ASM 2: Introduction, ASM 2, Typical Wastewater Characteristics and Kinetic and Stoichiometric Constants, Wastewater Characterization for Activated Sludge Processes, Calibration of the ASM 2, Model Limitations, Conclusion, Bibliography ASM 1: Introduction, Method of Model Presentation, Model Incorporating Carbon Oxidation Nitrification and Denitrification, Characterization of Wastewater and Estimation of Parameter Values, Typical Parameter Ranges, Default Values, and Effects of Environmental Factors, Assumptions, Restrictions and Constraints, Implementation of the Activated Sludge Model Scientific and Technical Report No.9

N2O and CH4 Emission from Wastewater Collection and Treatment Systems

Author : Jeff Foley
Publisher : IWA Publishing
ISBN 13 : 1780407335
Total Pages : 250 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis N2O and CH4 Emission from Wastewater Collection and Treatment Systems by : Jeff Foley

Download or read book N2O and CH4 Emission from Wastewater Collection and Treatment Systems written by Jeff Foley and published by IWA Publishing. This book was released on 2015-05-15 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a world where there is a growing awareness of the possible effects of human activities on climate change, there is a need to identify the emission of greenhouse gases (GHG) from wastewater treatment plants (WWTPs). As a result of this growing awareness, governments started to implement regulations that require water authorities to report their GHG emissions. With these developments there exists a strong need for adequate insight into the emissions of N2O and CH4. With this insight water authorities would be able to estimate and finally reduce their emissions. The overall objectives of the different research programs performed by partners of the GWRC members WERF (United States of America), WSAA (Australia), CIRSEE-Suez (France) and STOWA (the Netherlands) were: To define the origin of N2O emission. To understand the formation processes of N2O. To identify the level of CH4 emissions from wastewater collection and treatment systems. To evaluate the use of generic emission factors to estimate the emission of N2O from individual plants

Nitrous Oxide Emissions from Wastewater Treatment Processes and Process Parameters Affecting Emissions

Author : Shannon Kusaka Cavanaugh
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Nitrous Oxide Emissions from Wastewater Treatment Processes and Process Parameters Affecting Emissions by : Shannon Kusaka Cavanaugh

Download or read book Nitrous Oxide Emissions from Wastewater Treatment Processes and Process Parameters Affecting Emissions written by Shannon Kusaka Cavanaugh and published by . This book was released on 2021 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most wastewater treatment plants in the United States must be upgraded to reduce nutrient discharges. These improvements are needed to meet upcoming permit requirements and to prevent negative environmental impacts like eutrophication of receiving water bodies. However, one of the potential side-effects of increased nitrogen removal in wastewater treatment processes is increased nitrous oxide (N2O) emissions from biological nitrification and denitrification. N2O is a greenhouse gas (GHG) approximately 300 times stronger than an equivalent amount of CO2; thus, it is imperative to (1) establish comprehensive methodologies to accurately quantify N2O emissions from full-scale treatment processes and (2) understand the relevant process parameters and microbiology involved in emissions from wastewater treatment. This serves to ultimately minimize emissions (and therefore the carbon footprint) of wastewater treatment plants (WWTPs). To address this, emissions from two wastewater treatment processes were quantified, and relevant process parameters and microbial emission pathways were investigated. While the two treatment systems differ in terms of scale and processes utilized, both are innovative wastewater treatment technologies designed for efficient use of space and nutrient removal. (1) At Brightwater Treatment Plant (Woodinville, WA), aqueous and gaseous N2O monitoring techniques were employed at a full-scale membrane bioreactor (MBR) for 5.5 months. To the knowledge of the investigators, this campaign was the most comprehensive study of a fully covered MBR to date. Emission estimates from both aqueous and gaseous analyzers were compared to determine their reliability, and the average emission factor (using data from both analyzers) was 0.58% of plant influent total Kjeldahl nitrogen (TKN) emitted as N2O-N. Emissions were positively correlated with influent pH, nitrification efficiency, and aeration basin/effluent NH4+and NO3−. They correlated negatively with primary effluent COD:N ratio and effluent pH, signifying that nitrification was likely the dominant N2O-production pathway. (2) A laboratory-scale, aerobic granular sludge (AGS) sequencing batch reactor (SBR) was operated for 11 months to measure N2O emissions with full phosphate removal and simultaneous nitrification-denitrification (SND). The reactor was operated at varying dissolved oxygen (DO) concentrations and with nitrite (NO2−) spikes to investigate the impact of these process parameters on emissions. Increased DO and NO2- concentrations were associated with increased emissions. N2O was minimized at a dissolved oxygen concentration of 1 mg O2 L−1, with an emission factor of 0.18% of oxidized NH3-N emitted as N2O-N. This emission factor is lower than many previously reported factors from AGS reactors. Molecular analyses revealed a population of microbes capable of shortcut nitrogen removal, which is advantageous for wastewater treatment because of decreased oxygen and carbon requirements.

Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants

Author : Xinmin Zhan
Publisher : IWA Publishing
ISBN 13 : 1780406304
Total Pages : 162 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants by : Xinmin Zhan

Download or read book Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants written by Xinmin Zhan and published by IWA Publishing. This book was released on 2018-01-15 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The wide adoption of wastewater treatment processes and use of novel technologies for improvement of nitrogen and phosphorus removals from wastewater have been introduced to meet stringent discharge standards. Municipal wastewater treatment plants (MWWTPs) are one of major contributors to the increase in the global GHG emissions and therefore it is necessary to carry out intensive studies on quantification, assessment and characterization of GHG emissions in wastewater treatment plants, on the life cycle assessment from GHG emission prospective, and on the GHG mitigation strategies. Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants summarizes the recent development in studies of greenhouse gas emissions (N2O, CH4 and CO2) in MWWTPs. It also summarizes the development in life cycle assessment on GHG emissions in consideration of the energy usage in MWWTPs. The strategies in mitigating GHG emissions are discussed and the book provides an overview for researchers, students, water professionals and policy makers on GHG emission and mitigation in MWWTPS and industrial wastewater treatment processes. The book is a valuable resource for undergraduate and postgraduate students in the water, climate, and energy areas of research. It is also a useful reference source for water professionals, government policy makers, and research institutes.

Real Time Monitoring of Nitrous Oxide Emissions from Wastewater Treatment Processes by Membrane Introduction Mass Spectrometry

Author : Alexander Sandy Thompson
Publisher :
ISBN 13 : 9781321564280
Total Pages : 41 pages
Book Rating : 4.5/5 (642 download)

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Book Synopsis Real Time Monitoring of Nitrous Oxide Emissions from Wastewater Treatment Processes by Membrane Introduction Mass Spectrometry by : Alexander Sandy Thompson

Download or read book Real Time Monitoring of Nitrous Oxide Emissions from Wastewater Treatment Processes by Membrane Introduction Mass Spectrometry written by Alexander Sandy Thompson and published by . This book was released on 2010 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project investigated membrane introduction mass spectrometry (MIMS) as a real time (on-line) analytical monitoring technique for nitrous oxide gas emissions from processes within a full-scale biological nutrient removal wastewater treatment plant. Experiments have shown that treatment processes including nitrification (aerobic - ammonia to nitrate) and denitrification (anoxic - nitrate to nitrogen gas) can become disrupted resulting in unintended nitrous oxide emissions (N2O). A limited number of studies have been conducted that monitor real time N2O emissions from full-scale treatment bioreactors and there remains significant uncertainty in true emissions. Two real time monitoring experiments (22 hours each) are shown where MIMS was able to track nitrous oxide emissions from the aerobic and anoxic zones of the bioreactor. Concentrations were calculated from response factors obtained using internal standard. Estimated quantities of nitrous oxide emissions under various scenarios and recommendations for future investigations are also provided.

Nitrous Oxide Emissions from Wastewater Treatment

Author : Joon Ho Ahn
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (769 download)

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Book Synopsis Nitrous Oxide Emissions from Wastewater Treatment by : Joon Ho Ahn

Download or read book Nitrous Oxide Emissions from Wastewater Treatment written by Joon Ho Ahn and published by . This book was released on 2010 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Verifying Greenhouse Gas Emissions

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309152119
Total Pages : 124 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Verifying Greenhouse Gas Emissions by : National Research Council

Download or read book Verifying Greenhouse Gas Emissions written by National Research Council and published by National Academies Press. This book was released on 2010-07-28 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world's nations are moving toward agreements that will bind us together in an effort to limit future greenhouse gas emissions. With such agreements will come the need for all nations to make accurate estimates of greenhouse gas emissions and to monitor changes over time. In this context, the present book focuses on the greenhouse gases that result from human activities, have long lifetimes in the atmosphere and thus will change global climate for decades to millennia or more, and are currently included in international agreements. The book devotes considerably more space to CO2 than to the other gases because CO2 is the largest single contributor to global climate change and is thus the focus of many mitigation efforts. Only data in the public domain were considered because public access and transparency are necessary to build trust in a climate treaty. The book concludes that each country could estimate fossil-fuel CO2 emissions accurately enough to support monitoring of a climate treaty. However, current methods are not sufficiently accurate to check these self-reported estimates against independent data or to estimate other greenhouse gas emissions. Strategic investments would, within 5 years, improve reporting of emissions by countries and yield a useful capability for independent verification of greenhouse gas emissions reported by countries.

Innovative Wastewater Treatment & Resource Recovery Technologies: Impacts on Energy, Economy and Environment

Author : Juan M. Lema
Publisher : IWA Publishing
ISBN 13 : 1780407866
Total Pages : 690 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Innovative Wastewater Treatment & Resource Recovery Technologies: Impacts on Energy, Economy and Environment by : Juan M. Lema

Download or read book Innovative Wastewater Treatment & Resource Recovery Technologies: Impacts on Energy, Economy and Environment written by Juan M. Lema and published by IWA Publishing. This book was released on 2017-06-15 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the 3R concept applied to wastewater treatment and resource recovery under a double perspective. Firstly, it deals with innovative technologies leading to: Reducing energy requirements, space and impacts; Reusing water and sludge of sufficient quality; and Recovering resources such as energy, nutrients, metals and chemicals, including biopolymers. Besides targeting effective C,N&P removal, other issues such as organic micropollutants, gases and odours emissions are considered. Most of the technologies analysed have been tested at pilot- or at full-scale. Tools and methods for their Economic, Environmental, Legal and Social impact assessment are described. The 3R concept is also applied to Innovative Processes design, considering different levels of innovation: Retrofitting, where novel units are included in more conventional processes; Re-Thinking, which implies a substantial flowsheet modification; and Re-Imagining, with completely new conceptions. Tools are presented for Modelling, Optimising and Selecting the most suitable plant layout for each particular scenario from a holistic technical, economic and environmental point of view.

Nitrous Oxide Emissions from Wastewater Treatment Systems

Author : John Michael Russell
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (154 download)

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Book Synopsis Nitrous Oxide Emissions from Wastewater Treatment Systems by : John Michael Russell

Download or read book Nitrous Oxide Emissions from Wastewater Treatment Systems written by John Michael Russell and published by . This book was released on 1991 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants

Author : Xinmin Zhan
Publisher : IWA Publishing
ISBN 13 : 1780406304
Total Pages : 162 pages
Book Rating : 4.7/5 (84 download)

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Book Synopsis Greenhouse Gas Emission and Mitigation in Municipal Wastewater Treatment Plants by : Xinmin Zhan

Wastewater Engineering

Author : Metcalf & Eddy Inc
Publisher :
ISBN 13 : 9781259010798
Total Pages : 1856 pages
Book Rating : 4.0/5 (17 download)

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Book Synopsis Wastewater Engineering by : Metcalf & Eddy Inc

Download or read book Wastewater Engineering written by Metcalf & Eddy Inc and published by . This book was released on 2013-06-01 with total page 1856 pages. Available in PDF, EPUB and Kindle. Book excerpt: This update of a popular book for civil and environmental engineering majors describes the technological and regulatory changes that have occurred over the last ten years in the discipline.

Frontiers in Wastewater Treatment and Modelling

Author : Giorgio Mannina
Publisher : Springer
ISBN 13 : 3319584219
Total Pages : 754 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Frontiers in Wastewater Treatment and Modelling by : Giorgio Mannina

Download or read book Frontiers in Wastewater Treatment and Modelling written by Giorgio Mannina and published by Springer. This book was released on 2017-05-04 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the latest research advances, innovations, and applications in the field of water management and environmental engineering as presented by leading researchers, engineers, life scientists and practitioners from around the world at the Frontiers International Conference on Wastewater Treatment (FICWTM), held in Palermo, Italy in May 2017. The topics covered are highly diverse and include the physical processes of mixing and dispersion, biological developments and mathematical modeling, such as computational fluid dynamics in wastewater, MBBR and hybrid systems, membrane bioreactors, anaerobic digestion, reduction of greenhouse gases from wastewater treatment plants, and energy optimization. The contributions amply demonstrate that the application of cost-effective technologies for waste treatment and control is urgently needed so as to implement appropriate regulatory measures that ensure pollution prevention and remediation, safeguard public health, and preserve the environment. The contributions were selected by means of a rigorous peer-review process and highlight many exciting ideas that will spur novel research directions and foster multidisciplinary collaboration among different water specialists.

Greenhouse Gas Emissions from Ecotechnologies for Wastewater Treatment

Author : Juan Pablo Silva Vinasco
Publisher : CRC Press
ISBN 13 : 1000293203
Total Pages : 195 pages
Book Rating : 4.0/5 (2 download)

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Book Synopsis Greenhouse Gas Emissions from Ecotechnologies for Wastewater Treatment by : Juan Pablo Silva Vinasco

Download or read book Greenhouse Gas Emissions from Ecotechnologies for Wastewater Treatment written by Juan Pablo Silva Vinasco and published by CRC Press. This book was released on 2021-02-25 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotechnologies for wastewater treatment (EWWT) have been used as a cost-effective alternative to conventional wastewater treatment methods for improving the removal of organic carbon, nutrients and pathogenic microorganisms from wastewater. However, due to biochemical transformations of organic matter and nutrients EWWT are net sources of CO2, CH4 and N2O greenhouse gases (GHGs), which may be transferred into the atmosphere contributing to global warming. Greenhouse Gas Emissions from Ecotechnologies for Wastewater Treatment provides scientific information about greenhouse gas, such as CO2, CH4 and N2O, generation and emissions from different municipal EWWT. The main EWWT considered in this book are anaerobic ponds, facultative ponds, duckweed-based ponds, and a freshwater natural wetland perturbed by anthropogenic activities such as wastewater discharge and nutrients from agricultural run-off. The book includes a full literature review of recent publications about GHGs emissions from EWWT. It also introduces the calculation of GHGs flux using a static chamber technique. Besides, the book presents information on the influence of environmental factors such as temperature, pH, DO, and nutrients on GHG emissions produced in EWWT under tropical conditions. This book will be a useful reference for researches and students interested in the broader area of water and climate change subjects. The publication may also be of interest to policy makers concerned with climate change, water sector planning, and wastewater treatment.

Efficient Processing of Deep Neural Networks

Author : Vivienne Sze
Publisher : Springer Nature
ISBN 13 : 3031017668
Total Pages : 254 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Efficient Processing of Deep Neural Networks by : Vivienne Sze

Download or read book Efficient Processing of Deep Neural Networks written by Vivienne Sze and published by Springer Nature. This book was released on 2022-05-31 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a structured treatment of the key principles and techniques for enabling efficient processing of deep neural networks (DNNs). DNNs are currently widely used for many artificial intelligence (AI) applications, including computer vision, speech recognition, and robotics. While DNNs deliver state-of-the-art accuracy on many AI tasks, it comes at the cost of high computational complexity. Therefore, techniques that enable efficient processing of deep neural networks to improve key metrics—such as energy-efficiency, throughput, and latency—without sacrificing accuracy or increasing hardware costs are critical to enabling the wide deployment of DNNs in AI systems. The book includes background on DNN processing; a description and taxonomy of hardware architectural approaches for designing DNN accelerators; key metrics for evaluating and comparing different designs; features of DNN processing that are amenable to hardware/algorithm co-design to improve energy efficiency and throughput; and opportunities for applying new technologies. Readers will find a structured introduction to the field as well as formalization and organization of key concepts from contemporary work that provide insights that may spark new ideas.

Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories

Author :
Publisher :
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories by :

Download or read book Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories written by and published by . This book was released on 2000 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

N2O and CH4 Emission from Wastewater Collection and Treatment Systems

Author : Zhiguo Yuan
Publisher :
ISBN 13 : 9781780407340
Total Pages : 220 pages
Book Rating : 4.4/5 (73 download)

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Book Synopsis N2O and CH4 Emission from Wastewater Collection and Treatment Systems by : Zhiguo Yuan

Download or read book N2O and CH4 Emission from Wastewater Collection and Treatment Systems written by Zhiguo Yuan and published by . This book was released on 2015-05-15 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a world where there is a growing awareness of the possible effects of human activities on climate change, there is a need to identify the emission of greenhouse gases (GHG) from wastewater treatment plants (WWTPs). As a result of this growing awareness, governments started to implement regulations that require water authorities to report their GHG emissions. With these developments there exists a strong need for adequate insight into the emissions of N2O and CH4. With this insight water authorities would be able to estimate and finally reduce their emissions. The overall objectives of the different research programs performed by partners of the GWRC members WERF (United States of America), WSAA (Australia), CIRSEE-Suez (France) and STOWA (the Netherlands) were: To define the origin of N2O emission. To understand the formation processes of N2O. To identify the level of CH4 emissions from wastewater collection and treatment systems. To evaluate the use of generic emission factors to estimate the emission of N2O from individual plants