Modelling of Suspended Solids in Integrated Urban Wastewater Systems PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Modelling of Suspended Solids in Integrated Urban Wastewater Systems PDF full book. Access full book title Modelling of Suspended Solids in Integrated Urban Wastewater Systems by Julia Margrit Ledergerber. Download full books in PDF and EPUB format.
Author: Julia Margrit Ledergerber
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Résumé en anglais
Author: Julia Margrit Ledergerber
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Résumé en anglais
Author: Manfred Schütze
Publisher: Springer Science & Business Media
ISBN: 144710157X
Category : Technology & Engineering
Languages : en
Pages : 371
Get Book Here
Book Description
by Professor Poul Harremoes Environmental engineering has been a discipline dominated by empirical approaches to engineering. Historically speaking, the development of urban drainage structures was very successful on the basis of pure empiricism. Just think of the impressive structures built by the Romans long before the discipline of hydraulics came into being. The fact is that the Romans did not know much about the theories of hydraulics, which were discovered as late as the mid-1800s. However, with the Renaissance came a new era. Astronomy (Galileos) and basic physics (Newton) started the scientific revolution and in the mid-1800s Navier and Stokes developed the application of Newtons laws to hydrodynamics, and later, St. Venant the first basic physics description of the motion of water in open channels. The combination of basic physical understanding of the phenomena involved in the flow of water in pipes and the experience gained by "trial and error", the engineering approach to urban drainage improved the design and performance of the engineering drainage infrastructure. However, due to the mathematical complications of the basic equations, solutions were available only to quite simple cases of practical significance until the introduction of new principles of calculation made possible by computers and their ability to crunch numbers. Now even intricate hydraulic phenomena can be simulated with a reasonable degree of confidence that the simulations are in agreement with performance in practice, if the models are adequately calibrated with sample performance data.
Author: Jean-Luc Bertrand-Krajewski
Publisher: IWA Publishing
ISBN: 1843395061
Category : Science
Languages : en
Pages : 172
Get Book Here
Book Description
The papers in this volume were originally presented at the 18th European Junior Scientists Workshop (EJSW), Portugal, on 8-11 November 2003 and at the 1st Asian Junior Scientists Workshop (AJSW), Malaysia, on 7-10 February 2004. The workshops were organised by the SS&PWG (Sewer Systems and Processes Working Group) of the IWA/IAHR Joint Committee on Urban Drainage. The two separate workshops were convened under the general themes of "Sewer Processes, Networks and Urban Drainage" and specific topics covered included integrated modelling of urban water systems; modelling of pollutant loads; calibration of models; bed-load transport; sewer pipe roughness; advection in sewers; anoxic processes; infiltration and exfiltration; runoff source control; pollutant loads; ventilation and oxygen uptake. From the 37 full papers presented at the two workshops, 16 papers have been selected by independent reviewers from the SS&PWG for publication in Sewer Networks and Processes within Urban Water Systems. They reflect rather well the variety of topics presented during both workshops, and bring the high-quality work of these junior authors to the wider audience it merits.
Author: Y. Chen
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Petr Hlavinek
Publisher: Springer Science & Business Media
ISBN: 1402046855
Category : Social Science
Languages : en
Pages : 339
Get Book Here
Book Description
Growing populations and rising standards of living exert stress on water supply and the quality of drinking water. This book presents aspects of challenges in the management of urban water resources, urban water supply, urban drainage and water bodies, wastewater treatment, security, and reuse. The book presents expert opinions which indicate that the way to deal with the current urban water management dilemmas is by integrated management and innovative delivery of water services.
Author: Carlos Alberto Velez Quintero
Publisher: CRC Press
ISBN: 1000159329
Category : Technology & Engineering
Languages : en
Pages : 219
Get Book Here
Book Description
A considerable amount of scientific evidence has been collected leading to the conclusion that urban wastewater components should be designed as one integrated system, in order to protect the receiving waters cost-effectively. Moreover, there is a need to optimize the design and operation of the sewerage network and wastewater treatment plant (WwTP) considering the dynamic interactions between them and the receiving waters. This book introduces a method called Model Based Design and Control (MoDeCo) for the optimum design and control of urban wastewater components. The book presents a detailed description of the integration of modelling tools for the sewer, the wastewater treatment plants and the rivers. The complex modelling structure used for the integrated model challenge previous applications of integrated modelling approaches presented in scientific literature. The combination of modelling tools and multi-objective evolutionary algorithms demonstrated in this book represent an excellent tool for designers and managers of urban wastewater infrastructure. This book also presents two alternatives to solve the computing demand of the optimization of integrated systems in practical applications: the use of surrogate modelling tools and the use of cloud computer infrastructure for parallel computing.
Author: Leila Pieper
Publisher:
ISBN:
Category :
Languages : en
Pages : 174
Get Book Here
Book Description
Modelling urban wastewater networks within integrated systems, focusing on both water quantity and quality, introduces flexibility to develop solutions with greatest benefit to the overall system. Integrated models provide benefits over traditional single sub-system models by facilitating efficient analysis of interactions between the individual components of urban water systems (i.e. catchments, sewers, treatment plants, and receiving waters) within a single modelling platform. The reduced complexity of this type of model decreases the computational burden compared to their detailed counterparts. This allows for a wider range of assessments such as scenario-testing, RTC optimization, and Monte Carlo uncertainty analyses. The potential to create these types of representative integrated models was proven in multiple studies, however, the current methods to develop these models are not well-established nor well documented, and therefore require significant work for each case study. Furthermore, the lack of a standardized method to represent the water quantity portion limits the wide-scale application of such models for water quality studies. Although research is required to further develop and optimize all methodologies involved with building Integrated Urban Wastewater System (IUWS) models, this project focuses on the simplified catchment and sewer conceptual models for water quantity. The objective of this study was to develop a structured procedure to translate detailed hydrologic and hydraulic models into the simplified conceptual models used in IUWS modelling. The aim was to improve repeatability, flexibility and efficiency of the general approach, regardless of chosen modelling platforms. This task was achieved by extracting the key steps and considerations while building two simplified conceptual models of a case study in central Ottawa, Canada. The central urban portion (6,400 ha) of a calibrated detailed PCSWMM model of the City of Ottawa, containing a mix of separated, partially-separated and combined sewer areas, was used as the reference model in this case study. The main task involved determining how to translate this detailed model into simplified conceptual models, using WEST as the platform, in a structured, systematic and repeatable way. The resultant developed procedure follows a similar sequence as the protocols reviewed in the literature review, while taking into consideration specifics related to aggregating catchments and sewers. The four main phases of this thesis are Project Definition, Model Development, Calibration and Validation. Two versions of the lumped model were created; the first was created with a certain level of aggregation, while the second was a further aggregation of the first model, resulting in about half the number of blocks and reservoirs. Both models were calibrated and compared to the detailed model as well as to each other. The simulation results showed that the volume and dynamics (ie. the shape of the hydrographs) of the conceptual models emulated those of the detailed model well (“10% differences), while providing a significant reduction in simulation-time speed-up (10 to 80 times faster than the detailed model). The simulation time reduction in the more aggregated model was not equivalent to the increased level of aggregation, mostly due to the fixed amount of basic calculation required in each model. As generally expected, larger but acceptable differences were found during the validation period compared to the calibration period. These differences were attributed to several factors, such as the lack of a long-time series calibration, oversimplified representations of special structures, the different mechanisms in the detailed and conceptual models used to represent wet weather flow, and the configuration of the model code. Overall, the validation was successful given the fact that the calibration was performed using events whereas the validation used an extended time series of 45 days. In general, the devised procedure helped reduce the manual labour associated with building a model and structured the approach to build the conceptual models. General findings from the various identified phases were also documented throughout the model building process. In the Project Definition phase, the conceptual model's objectives guided the method of model development and calibration. The catchments and sewers were delineated concurrently in the Model Development phase, while taking into consideration the locations of the key hydraulic structures, raingauges and overflows. The Calibration phase allowed for the most systematic advancement of the model build, given that a good calibration order was defined and a limited set of parameters was targeted in each successive run. The Validation phase proved critical in pinpointing deficiencies in the initial assumptions and calibrated values, thus determining whether the model is ready for use or needs to be modified through one of the preceding phases. An efficient and structured procedure that translates catchment and sewer representations from detailed to conceptual models in IUWS was developed and successfully applied to a case study. As demonstrated in this project, applying the proposed structured procedure will lead to the efficient development of representative IUWS models, thus increasing their potential use to test real-life scenarios. To challenge and improve the formulated procedure, applying it to multiple case studies is recommended.
Author: Roland K. Price
Publisher: IWA Publishing
ISBN: 1843392747
Category : Science
Languages : en
Pages : 553
Get Book Here
Book Description
This book is an introduction to hydroinformatics applied to urban water management. It shows how to make the best use of information and communication technologies for manipulating information to manage water in the urban environment. The book covers the acquisition and analysis of data from urban water systems to instantiate mathematical models or calculations, which describe identified physical processes. The models are operated within prescribed management procedures to inform decision makers, who are responsible to recognized stakeholders. The application is to the major components of the urban water environment, namely water supply, treatment and distribution, wastewater and stormwater collection, treatment and impact on receiving waters, and groundwater and urban flooding. Urban Hydroinformatics pays particular attention to modeling, decision support through procedures, economics and management, and implementation in both developed and developing countries. The book is written with post-graduates, researchers and practicing engineers who are involved in urban water management and want to improve the scope and reliability of their systems.
Author: Guang-Hao Chen
Publisher: IWA Publishing
ISBN: 1789060354
Category : Science
Languages : en
Pages : 867
Get Book Here
Book Description
The first edition of this book was published in 2008 and it went on to become IWA Publishing’s bestseller. Clearly there was a need for it because over the twenty years prior to 2008, the knowledge and understanding of wastewater treatment had advanced extensively and moved away from empirically-based approaches to a fundamental first-principles approach based on chemistry, microbiology, physical and bioprocess engineering, mathematics and modelling. However the quantity, complexity and diversity of these new developments was overwhelming for young water professionals, particularly in developing countries without readily available access to advanced-level tertiary education courses in wastewater treatment. For a whole new generation of young scientists and engineers entering the wastewater treatment profession, this book assembled and integrated the postgraduate course material of a dozen or so professors from research groups around the world who have made significant contributions to the advances in wastewater treatment. This material had matured to the degree that it had been codified into mathematical models for simulation with computers. The first edition of the book offered, that upon completion of an in-depth study of its contents, the modern approach of modelling and simulation in wastewater treatment plant design and operation could be embraced with deeper insight, advanced knowledge and greater confidence, be it activated sludge, biological nitrogen and phosphorus removal, secondary settling tanks, or biofilm systems. However, the advances and developments in wastewater treatment have accelerated over the past 12 years since publication of the first edition. While all the chapters of the first edition have been updated to accommodate these advances and developments, some, such as granular sludge, membrane bioreactors, sulphur conversion-based bioprocesses and biofilm reactors which were new in 2008, have matured into new industry approaches and are also now included in this second edition. The target readership of this second edition remains the young water professionals, who will still be active in the field of protecting our precious water resources long after the aging professors who are leading some of these advances have retired. The authors, all still active in the field, are aware that cleaning dirty water has become more complex but that it is even more urgent now than 12 years ago, and offer this second edition to help the young water professionals engage with the scientific and bioprocess engineering principles of wastewater treatment science and technology with deeper insight, advanced knowledge and greater confidence built on stronger competence.
Author: Daniel Roehr
Publisher: Routledge
ISBN: 1317537025
Category : Architecture
Languages : en
Pages : 147
Get Book Here
Book Description
With the infrastructure to manage storm water threats in cities becoming increasingly expensive to build or repair, the design community needs to look at alternative approaches. Living roofs present an opportunity to compliment ground-level storm water control measures, contributing to a holistic, integrated urban water management system. This book offers tools to plan and design living roofs, in the context of effectively mitigating storm water. Quantitative tools for engineering calculations and qualitative discussion of potential influences and interactions of the design team and assembly elements are addressed.
