Sewer Processes

Author: Thorkild Hvitved-Jacobsen
Publisher: CRC Press
ISBN: 1439881782
Format: PDF, ePub
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Since the first edition was published over a decade ago, advancements have been made in the design, operation, and maintenance of sewer systems, and new problems have emerged. For example, sewer processes are now integrated in computer models, and simultaneously, odor and corrosion problems caused by hydrogen sulfide and other volatile organic compounds, as well as other potential health issues, have caused environmental concerns to rise. Reflecting the most current developments, Sewer Processes: Microbial and Chemical Process Engineering of Sewer Networks, Second Edition, offers the reader updated and valuable information on the sewer as a chemical and biological reactor. It focuses on how to predict critical impacts and control adverse effects. It also provides an integrated description of sewer processes in modeling terms. This second edition is full of illustrative examples and figures, includes revisions of chapters from the previous edition, adds three new chapters, and presents extensive study questions. Presents new modeling tools for the design and operation of sewer networks Establishes sewer processes as a key element in preserving water quality Includes greatly expanded coverage of odor formation and prediction Details the WATS sewer process model Highlights the importance of aerobic, anoxic, and anaerobic processes Sewer Processes: Microbial and Chemical Process Engineering of Sewer Networks, Second Edition, provides a basis for up-to-date understanding and modeling of sewer microbial and chemical processes and demonstrates how this knowledge can be applied for the design, operation, and the maintenance of wastewater collection systems. The authors add chemical and microbial dimensions to the design and management of sewer networks with an overall aim of improved sustainability for the system itself and the surrounding environment.

Sewer Networks and Processes within Urban Water Systems

Author: Jean-Luc Bertrand-Krajewski
Publisher: IWA Publishing
ISBN: 1843395061
Format: PDF, Kindle
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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.

CARE S

Author: Sveinung Saegrov
Publisher: IWA Publishing
ISBN: 1843391155
Format: PDF, Mobi
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Computer Aided Rehabilitation of Sewer and Storm W

Aquatic Biofilms

Author: Helena Guasch Anna M. Romani
Publisher: Caister Academic Press
ISBN: 1910190187
Format: PDF, Mobi
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Biofilms in aquatic ecosystems colonize various surfaces (sand, rocks, leaves) and play a key role in the environment. Aquatic biofilms supply energy and organic matter to the food chain, they are important in recycling organic matter and contribute to water quality. This book is a concise review of the current knowledge on aquatic biofilms with an emphasis on the characteristics and ecology of biofilms in natural ecosystems and a focus on biofilm applications linked to water pollution problems. The volume is divided into three sections: Biofilms Mode of Life; Biofilms and Pollution; and New Technologies using Biofilms. In the first section the aquatic biofilm mode of life is described and reviewed. Key aspects covered include the three-dimensional structure and cell to cell communication of biofilms, their dynamic prokaryotic diversity and their vital role in biogeochemical cycles. In the second part of the book the use of biofilms in water quality is comprehensively covered. Chapters discuss biofilms in water quality, environmental risk assessment, monitoring and ecotoxicological approaches. Further topics include biofilm development in sewage pipes and the potential for microbial transformations in these systems. The final section focuses on important examples of novel technologies based on biofilms for water treatment, including the biodegradation of pollutants, the application of bioelectrogenic biofilms, and the biofilm capacity for nitrogen removal. With contributions from ecologists, engineers and microbiologists this book presents scientists and technicians with up-to-date knowledge and a clear understanding of aquatic biofilms from different and complementary points of view. An essential reference book for anyone working with biofilms.

The Microbiology of Anaerobic Digesters

Author: Michael H. Gerardi
Publisher: John Wiley & Sons
ISBN: 9780471468950
Format: PDF, Mobi
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Anaerobic digestion is a biochemical degradation process that converts complex organic material, such as animal manure, into methane and other byproducts. Part of the author's Wastewater Microbiology series, Microbiology of Anareboic Digesters eschews technical jargon to deliver a practical, how-to guide for wastewater plant operators.

Sewer Processes and Networks

Author: Jean-Luc Bertrand-Krajewski
Publisher: IWA Publishing
ISBN: 9781843394365
Format: PDF, Docs
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Wastewater, biofilms and sediments in sewers are subject to important physical, chemical and microbial changes and interactions affecting not only the sewer itself but also the subsequent wastewater treatment and receiving waters via combined sewer overflows or separate sewer outfalls. This was a motivating theme behind two previous conferences (published in Water Science and Technology) on ?The sewer as a physical, chemical and biological reactor?. This third conference, building on its predecessors, aimed to bring together scientists and practising engineers in the area of environmental process engineering and management of sewer systems to present their results and discuss physical, chemical and biological processes in sewers, and related structural aspects of sewer systems. Key topics covered included: interactions between sewers and the urban wastewater system including wastewater treatment, combined sewer overflows and receiving waters; characterisation, processes and physical interactions of sewer biofilm, sediments, wastewater and air; microbial and chemical processes; solutes and sediments transport including sedimentation and erosion; sulphide formation, corrosion and odour problems; bacteriology; specific pollutants; design, operation and control related to sewer processes; and interactions between sewer structure and processes. From the 45 available papers, 22 have been selected, reviewed and revised for publication in this issue, which reflects the most important aspects of the conference. Together they are a major step towards a more comprehensive and multidisciplinary understanding of sewer behaviour and functioning, of prime importance for the design, operation and upgrading of urban sewer and wastewater systems.