Download or read book On Gas Pockets in Wastewater Pressure Mains and Their Effect on Hydraulic Performance written by Christof Laurens Lubbers and published by IOS Press. This book was released on 2007 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: A consequence of this reduction can be that the sewer system is not drained fast enough.
Download or read book Hydraulic design and management of wastewater transport systems written by Michiel Tukker and published by IWA Publishing. This book was released on 2016-04-15 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic Design and Management of Wastewater Transport Systems is a manual resulting from the research project CAPWAT (CAPacity loss in wasteWATer pressure pipelines), which researched the mechanisms for the creation, stagnation and discharge of gas bubbles in wastewater pressure pipelines. During this six-year research programme, it was recognised that there is no hydraulic manual/guideline that focuses on the entire wastewater pressure pipeline system, the processes it includes, and the interaction between the pressure pipeline and the pumping station. This manual provides a compilation of all the hydraulic knowledge that is necessary for designing a wastewater transport system and to manage it operationally. The wastewater transport system is the link between the collection and treatment of the wastewater and the collection system includes, among others, the gravity flow sewage system from the house (or consumer) and service connection through street and main sewers up to the suction basins. The transport system, for which this manual was written, includes the suction basin, the sewage pumping station and the pressure pipelines. Wastewater transport systems are becoming more complex due to building larger sewage water treatment plants, wastewater being transported over greater distances and increasingly more (and smaller) pipelines connecting to the main sewers. The operation of the pumping stations is largely determined by how the entire system behaves. Insight into this operation is, therefore, crucial for proper design and management. The central point of the design is to create an independent and safe system with the necessary transport capacity at minimum societal costs. Predominantly, the management aspect focuses on guidelines to maintain the design principles regarding capacity and required energy.
Download or read book Air gas Entrainment in Sewer Force Mains written by Kirstin Byrne and published by . This book was released on 2013 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Air and gas pocket entrainment in pressurized sewer systems are a major issue for many wastewater agencies due to decreased capacity, increased pumping and maintenance costs, corrosion, and reduction in efficiency. The Orange County Sanitation District has been concerned about air pocket formation in their Newport Force Main Network. In this study, we performed field tests to determine if air pockets existed within OCSD's large diameter force main from the Bitter Point Pump Station to Plant 2 and the effects of air entrapment on the hydraulic performance of the system. Several flow scenarios were analyzed during the field tests, which were performed with air valves open and air valves closed to compare flow and pressure fluctuations when air cannot escape the system. The effective flow area was analyzed to determine the decrease experienced when large quantities of air were present within the force main. Little information is available in regards to field studies performed on air and gas pocket formation outside of a controlled laboratory, so the type of tests and the methodology proposed in this study could be used as guidelines by other agencies facing similar problems.
Download or read book Water Management Challenges in Global Change written by B. Ulanicki and published by CRC Press. This book was released on 2020-11-25 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water Management Challenges in Global Change contains the proceedings of the 9th Computing and Control for the Water Industry (CCWI2007) and the Sustainable Urban Water Management (SUWM2007) conferences. The rationale behind these conferences is to improve the management of urban water systems through the development of computerbased methods. Issues such as economic globalisation, climate changes and water shortages call for a new approach to water systems management, which addresses the relevant technical, social and economic aspects. This collection represents the views of academic and industrial experts from a number of countries, who provide technical solutions to current water management problems and present a vision for addressing the global questions. The themes underlying many of the contributions include energy and material savings, water savings and the integration of different aspects of water management. The papers are grouped into three themes covering water distribution systems, sustainable urban water management and modelling of wastewater treatment plants. The water distribution topics cover asset and information management, planning, monitoring and control, hydraulic modelling of steady state and transients, water quality and treatment, demand and leakage management, optimisation, design and decision support systems, as well as reliability and security of water distribution systems. The sustainable urban water management topics include urban drainage systems, water reuse, social aspects of water management and also selected facets of water resources and irrigation. Computer control of wastewater treatment plants has been seen as less advanced than that of clean water systems. To address this imbalance, this book presents a number of modelling techniques developed specifically for these plants. Water Management Challenges in Global Change will prove to be invaluable to water and environmental engineering researchers and academics; managers, engineers and planners; and postgraduate students.
Download or read book Operating Large Scale Membrane Bioreactors for Municipal Wastewater Treatment written by Christoph Brepols and published by IWA Publishing. This book was released on 2010-11-18 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last decade membrane bioreactor (MBR) technology has grown up to be state of the art in municipal wastewater treatment. Since 1999 the Erftverband has designed, tendered and commissioned three MBR for municipal wastewater treatment in Germany, with capacities from 3,000 to 45,000 m3/d. The Erftverband was one of the pioneers in the full scale application of the technology regularly hosted training and information workshops for plant designers and operators from all over the world. Operating Large Scale Membrane Bioreactors for Municipal Wastewater Treatment provides hands-on information on many aspects of MBR technology based on more than ten years of practical experience in the operation of MBR plants with hollow-fiber microfiltration units. It gives details on process configuration, investment and operation costs based on case studies and also in comparison to data from conventional activated sludge (CAS) treatment processes. The book contains the most recent research findings as Erftverband has been collaborating on many of the major European research projects dedicated to MBR technology. Actual process data from all treatment steps of the plants (mechanical pre-treatment, bioreactors, filtration, membrane cleaning) gives an insight into the long-term performance of the MBR plants and into the possible do’s and dont's of full scale applications and the potential for further process optimisation. It is a good source of practical advice on tendering and construction, plant management and operation. Operating Large Scale Membrane Bioreactors for Municipal Wastewater Treatment is essential reading for practitioners and researchers, providing information on many aspects of MBR technology, including actual process data, graphs and pictures that illustrate the challenges of MBR design and operation. Visit the IWA WaterWiki to read and share material related to this title: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/MBROperation
Download or read book Hydraulic Fracturing Wastewater written by Frank R. Spellman and published by CRC Press. This book was released on 2017-05-08 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a balanced discussion about the wastewater generated by hydraulic fracturing operations, and how to manage it. It includes an in-depth discussion of the hydraulic fracturing process, the resulting water cycle, and the potential risks to groundwater, soil, and air. The “fracking” process involves numerous chemicals that could potentially harm human health and the environment, especially if they enter and contaminate drinking water supplies. Treatment, reuse, and disposal options are the focus, and several case studies will be presented. The book also discusses the issues of the large amounts of water required for drilling operations, the impacts on water-sensitive regions.
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Problems in Pipelines written by Manuela Escarameia and published by . This book was released on 2005-01-01 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Book Review Index 2009 Cumulation written by Dana Ferguson and published by Book Review Index Cumulation. This book was released on 2009-08 with total page 1304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Book Review Index provides quick access to reviews of books, periodicals, books on tape and electronic media representing a wide range of popular, academic and professional interests. The up-to-date coverage, wide scope and inclusion of citations for both newly published and older materials make Book Review Index an exceptionally useful reference tool. More than 600 publications are indexed, including journals and national general interest publications and newspapers. Book Review Index is available in a three-issue subscription covering the current year or as an annual cumulation covering the past year.
Download or read book Proceedings of the 44th Industrial Waste Conference May 1989 Purdue University written by John W. Bell and published by CRC Press. This book was released on 2018-02-06 with total page 963 pages. Available in PDF, EPUB and Kindle. Book excerpt: New research-case histories and operating data-on every conceivable facet of today's big problem are detailed in the latest Purdue Book-with unparalleled appropriate, usable information and data for your current industrial waste problems from the May 1989 Conference.
Download or read book Recent Advances in Mineral Processing Plant Design written by Deepak Malhotra and published by SME. This book was released on 2009 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: A compilation of engaging and insightful papers from the prestigious 2009 Plant Design Symposium, the volume is a sequel to Mineral Processing Plant Design, Practice, and Control, an industry standard published in 2002. Both books are indispensable texts for university-level instruction, as well as valuable guides for operators considering new construction, plant renovation, or expansion. You'll learn the role of innovation, how to finance and conduct feasibility studies, and how to reduce your plant's carbon footprint.
Download or read book Wastewater Collection System Modeling and Design written by Haestad Methods, Inc and published by . This book was released on 2004 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: Disc 1 contains an academic version of SewerCAD stand-alone software, featuring exam booklet for continuing eduction credits, and user manual.
Download or read book Substitute Natural Gas from Waste written by Massimiliano Materazzi and published by Academic Press. This book was released on 2019-05-01 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substitute Natural Gas from Waste: Technical Assessment and Industrial Applications of Biochemical and Thermochemical Processes provides an overview of the science and technology of anaerobic digestion and thermal gasification for the treatment of biomass and unrecyclable waste residues. The book provides both the theoretical and practical basis for the clean and high-efficiency utilization of waste and biomass to produce Bio-Substitute Natural Gas (SNG). It examines different routes to produce bio-SNG from waste feedstocks, detailing solutions to unique problems, such as scale up issues and process integration. Final sections review waste sourcing and processing. This book is an ideal and practical reference for those developing, designing, scaling and managing bio-SNG production and utilization systems. Engineering students will find this to be a comprehensive resource on the application of fundamental concepts of bio-SNG production that are illustrated through innovative, recent case studies. Presents detailed scientific and technical information Describes up-to-date concepts, processes and plants for efficient anaerobic digestion and gasification of wastes and syngas utilization Compares gasification with anaerobic digestion for different situations Proposes alternative strategies to increase efficiency and overcome energy balance limitations Includes benchmarking data and industrial real-life examples to demonstrate the main process features and implementation pathways of bio-SNG systems from dry and wet waste, both in developed and developing countries
Download or read book The Effects of Entrapped Gas Bubbles on Physical Flow and Dissolved Gas Transport written by Lionel Andrew Sequeira and published by . This book was released on 2014 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwater tables undergo natural fluctuations due to a variety of processes like snow melt, rain infiltration, aquifer recharge/discharge and river stage fluctuations. Water-table fluctuations result in the entrapment of air bubbles below the water table which will affect the physical properties of the soil and the geochemistry of the groundwater. Oxygen in the air bubbles will dissolve into the groundwater and can be a source of dissolved oxygen. This thesis describes a series of experiments that were performed at a laboratory scale in a sand tank. The first phase of experiments involved measuring the change in water content and hydraulic conductivity of the sand under saturated and five water-table fluctuation scenarios. As the water-table fluctuation level increased, the amount of entrapped air increased, resulting in a decrease in water content and hydraulic conductivity of the zones with entrapped air. Bromide tracer tests were performed under fully saturated, 29 cm and 45 cm water-table fluctuations to identify physical properties like dispersivity and groundwater velocity. The tracer tests identified stratified velocity profiles across the sand tank such that the highest flow rate was deep at the inflow end while the lowest flow rate was at the shallow outflow end, resulting in preferential flow through the deep end of the sand tank. The second phase of experiments involved measuring the dissolved argon and oxygen concentrations in the sand tank under saturated, 29 cm and 45 cm water-table fluctuation scenarios. Due to limitations associated with the sampling procedure, diffusion could not be quantified as a process that contributed dissolved oxygen and argon to the groundwater in the sand tank. The 45 cm fluctuation experiment was run for 149 days to measure the change in dissolved-gas concentrations. The experimental results were simulated with MIN3P to provide some insight into the control mechanisms that govern gas-bubble dissolution and dissolved-gas depletion. The quantity of entrapped bubbles and the equilibration between the gaseous and aqueous phase are the main factors that control the depletion of dissolved-gas concentrations across the sand tank.
Download or read book Pollution Abstracts written by and published by . This book was released on 1996 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes material from conference proceedings and hard-to-find documents, in addition to journal articles. Over 1,000 journals are indexed and literature published from 1981 to the present is covered. Topics in pollution and its management are extensively covered from the standpoints of atmosphere, emissions, mathematical models, effects on people and animals, and environmental action. Major areas of coverage include: air pollution, marine pollution, freshwater pollution, sewage and wastewater treatment, waste management, land pollution, toxicology and health, noise, and radiation.
Download or read book The Journal of gas lighting water supply and sanitary improvement written by and published by . This book was released on 1860 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
