Download or read book Characterization of Fouling of Tertiary Membranes Treating Secondary Effluent of Domestic Wastewater written by Sara Abu-Obaid and published by . This book was released on 2018 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of membranes for tertiary treatment of wastewater has become more frequent over the years, especially with increasing interest in water reuse. Fouling prevents wider application of this technology as it creates operational challenges and increases costs. In tertiary applications, membrane feedwater can be variable in composition as this depends on the operating conditions of the implemented upstream biological treatment process. The tertiary membranes at the Keswick WPCP have demonstrated increased fouling in the spring season. Early spring marks the period that corresponds to low wastewater temperatures and elevated flows. This study sought to identify critical operating conditions leading to seasonal fluctuations in fouling of full-scale tertiary membranes. This was done through conducting a detailed historical review of membrane operational parameters for the year of 2016 and 2017. In addition, changes in potential foulants during high fouling periods were examined to obtain an improved understanding of the foulant characteristics. This was done through a sampling campaign that spanned multiple seasons of operation aiming to characterize feedwater quality during extreme operational conditions. The analysis of historical data revealed a relationship between membrane fouling and water temperature and flow, which was more than could be explained by changes in water viscosity with temperature. However, it was observed that the membrane fouling behavior significantly differed between the two year-long observation periods, with a peak in fouling indexes during March and April for 2016, and inconsistent fluctuations in fouling indexes between January and May for 2017. The differing patterns suggested a complex dependence of fouling on the operating conditions. Therefore, it was concluded that fouling depends on water temperature and flow, however, it was not possible to delineate the contributions of the individual variables as they were found to be highly correlated. The examination of feedwater characteristics data revealed that high membrane fouling rates correlated to an increase in biopolymer concentration of total DOC. The increase in biopolymer concentration was also correlated to a decrease in water temperature and increase in flow. However, no relationship was observed between TOC/DOC concentrations and temperature and flow. This could indicate that fouling of tertiary membranes due to seasonal variation in operational conditions is a result of alterations to the composition of organics in membrane feed, not the overall concentration of TOC/DOC. The examination of field data also revealed an increase in CST values during high fouling events. The increase in CST values correlated to the decrease in water temperature and increase in flow. Elevated CST values, which indicate worsened dewaterability of sludge, also correlated to higher biopolymer concentrations. Therefore, it was concluded that seasonal variations may result in the increased release of EPS by microorganisms. This leads to higher membrane fouling and worsened dewaterability of upstream sludge. The results of this study enhance the knowledge of fouling behaviour and foulant characteristics for tertiary membranes operating under stressed conditions. This knowledge will be of value when designing mitigation strategies to reduce the costs of these types of systems.

Download or read book Fouling of Low Pressure Membranes by Municipal Wastewater written by Claudia Laabs and published by Logos Verlag Berlin. This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microfiltration (MF) and ultrafiltration (UF) membranes have a wide range of applications in the wastewater industry: they are used to polish wastewater treatment plant effluents or are directly integrated in the biological treatment process in the form of membrane bio-reactors (MBR). The major challenge of low-pressure membrane filtration remains the fouling of the membranes by organic matter which prevents an efficient operation by reducing the overall transmembrane flux and/or increasing the transmembrane pressure over time. This research investigates the fouling potential of municipal wastewater in low-pressure membrane filtration. Using bench-scale stirred cell experiments the principal organic foulants and the underlying fouling mechanisms are identified. Additionally, two MBR pilot plants are monitored over the course of one year in order to detect possible correlations between the feed water characteristics, operational parameters, and membrane fouling.

Download or read book Cation Binding by Humic Substances written by Edward Tipping and published by Cambridge University Press. This book was released on 2002-05-30 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive account of these important environmental interactions, this book describes the binding reactions, how they can be mathematically modelled, and how this knowledge is used to interpret environmental phenomena in soils, waters and sediments. A valuable resource for advanced undergraduate and graduate students, environmental scientists, ecologists and geochemists.

Download or read book Membrane Bioreactors for Wastewater Treatment written by Thomas Stephenson and published by IWA Publishing. This book was released on 2000-05-31 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers the subject of membrane bioreactors (MBR) for wastewater treatment, dealing with municipal as well as industrial wastewaters. The book details the 3 types of MBR available and discusses the science behind the technology, their design features, operation, applications, advantages, limitations, performance, current research activities and cost. As the demand for wastewater treatment, recycling and re-use technologies increases, it is envisaged that the membrane separation bioreactor will corner the market. Contents Membrane Fundamentals Biological Fundamentals Biomass Separation Membrane Bioreactors Membrane Aeration and Extractive Bioreactors Commercial Membrane Bioreactor Systems Membrane Bioreactor Applications Case Studies

Download or read book Waste Water Treatment Technologies Volume I written by Saravanamuthu Vigneswaran and published by EOLSS Publications. This book was released on 2009-09-15 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water and Wastewater Treatment Technologies theme is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Water and Wastewater Treatment Technologies deals, in three volumes, and covers several topics, with several issues of great relevance to our world such as: Urban Wastewater Treatment; Characteristics of Effluent Organic Matter in Wastewater; Filtration Technologies in wastewater treatment; Air Stripping in Industrial Wastewater Treatment; Dissolved air flotation in industrial wastewater treatment; Membrane Technology for Organic Removal in Wastewater; Adsorption and Biological Filtration in Wastewater Treatment; Physico-chemical processes for Organic removal from wastewater effluent; Deep Bed Filtration: Modelling Theory And Practice ; Specific options in biological wastewater treatment for reclamation and reuse ; Biological Phosphorus Removal Processes For Wastewater Treatment ; Sequencing Batch Reactors: Principles, Design/Operation And Case Studies ; Wastewater stabilization ponds (WSP)for wastewater treatment; Treatment of industrial wastewater by membrane bioreactors; Stormwater treatment technologies; Sludge Treatment Technologies ; Wastewater Treatment Technology For Tanning Industry; Palm Oil And Palm Waste Potential In Indonesia ; Recirculating Aquaculture Systems – A Review ; Upflow anaerobic sludge blanket (UASB)reactor in wastewater treatment; Applied Technologies In Municipal Solid Waste Landfill Leachate Treatment; Water Mining: Planning and Implementation Issues for a successful project; Assessment methodologies for water reuse scheme and technology; Nanotechnology for Wastewater Treatment. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs W

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Protection Research Catalog Indexes written by Smithsonian Science Information Exchange and published by . This book was released on 1972 with total page 1478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Membrane based Hybrid Processes for Wastewater Treatment written by Maulin P Shah and published by Elsevier. This book was released on 2021-05-27 with total page 727 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane-Based Hybrid Processes for Wastewater Treatment analyzes and discusses the potential of membrane-based hybrid processes for the treatment of complex industrial wastewater, the recovery of valuable compounds, and water reutilization. In addition, recent and future trends in membrane technology are highlighted. Industrial wastewater contains a large variety of compounds, such as heavy metals, salts and nutrients, which makes its treatment challenging. Thus, the use of conventional water treatment methods is not always effective. Membrane-based hybrid processes have emerged as a promising technology to treat complex industrial wastewater. Discusses the properties, mechanisms, advantages, limitations and promising solutions of different types of membrane technologies Addresses the optimization of process parameters Describes the performance of different membranes Presents the potential of Nanotechnology to improve the treatment efficiency of wastewater treatment plants (WWTPs) Covers the application of membrane and membrane-based hybrid treatment technologies for wastewater treatment Includes forward osmosis, electrodialysis, and diffusion dialysis Considers hybrid membrane systems expanded to cover zero liquid discharge, salt recovery, and removal of trace contaminants

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Issues in Land and Water Engineering 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Land and Water Engineering / 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Coastal Engineering. The editors have built Issues in Land and Water Engineering: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Coastal Engineering in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Land and Water Engineering: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Water Reuse written by National Research Council and published by National Academies Press. This book was released on 2012-07-17 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expanding water reuse-the use of treated wastewater for beneficial purposes including irrigation, industrial uses, and drinking water augmentation-could significantly increase the nation's total available water resources. Water Reuse presents a portfolio of treatment options available to mitigate water quality issues in reclaimed water along with new analysis suggesting that the risk of exposure to certain microbial and chemical contaminants from drinking reclaimed water does not appear to be any higher than the risk experienced in at least some current drinking water treatment systems, and may be orders of magnitude lower. This report recommends adjustments to the federal regulatory framework that could enhance public health protection for both planned and unplanned (or de facto) reuse and increase public confidence in water reuse.

Download or read book Bioreactors written by Lakhveer Singh and published by Academic Press. This book was released on 2020-04-07 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioreactors: Sustainable Design and Industrial Applications in Mitigation of GHG Emissions presents and compares the foundational concepts, state-of-the-art design and fabrication of bioreactors. Solidly based on theoretical fundamentals, the book examines various aspects of the commercially available bioreactors, such as construction and fabrication, design, modeling and simulation, development, operation, maintenance, management and target applications for biofuels production and bio-waste management. Emerging issues in commercial feasibility are explored, constraints and pathways for upscaling, and techno-economic assessment are also covered. This book provides researchers and engineers in the biofuels and waste management sectors a clear, at-a-glance understanding of the actual potential of different advanced bioreactors for their requirements. It is a must-have reference for better-informed decisions when selecting the appropriate technology models for sustainable systems development and commercialization. Focuses on sustainable bioreactor processes and applications in bioenergy and bio-waste management Explores techno-economic and sustainability assessment aspects through a comparative approach, catering to diverse arrays and applications Offers comprehensive coverage of the most recent technology, from fundamentals to applications

Download or read book Industrial Wastewater Reuse written by Maulin P. Shah and published by Springer Nature. This book was released on 2023-07-21 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book identifies emerging technologies that allow the reuse and regeneration of industrial wastewater with innovative and applied approaches throughout the wastewater treatment cycle. Today, it is increasingly clear that treated urban wastewater, whose reuse has become an important component of long-term water management worldwide, is a key source of chemical pollutants and emerging biological concerns. Current water-quality guidelines for reclaimed wastewater predominantly address the risks associated with the presence of microbial organisms and chemical parameters such as biological oxygen demand, chemical oxygen demand, E. coli and worms, and in some cases heavy metals; however, they are insufficient for the full evaluation of risks. The global growth of population is concentrated in urban areas; therefore, most of the challenges and solutions related to wastewater reside in urban treatment plants. Unless wastewater management and wastewater governance processes are significantly improved within a decade, it is likely that our societies will face severe and prolonged water insecurity and urban floods. The application of sustainable technologies can eliminate or minimize micro-contaminants in wastewater. Several organizations focus on the potential impacts to humans and their environments by wastewater reuse. This book gathers new research and reviews work from researchers and scientists to identify the main barriers and limitations that will need to be overcome, so that wastewater reuse strategies gain more momentum and will be adopted more efficiently worldwide. The book is designed for engineers, scientists, and other professionals who are seeking an excellent introduction to and basic knowledge of the principles of environmental bioremediation technologies.

Download or read book Environmental Biotechnology Volume 4 written by K. M. Gothandam and published by Springer Nature. This book was released on 2021-09-24 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the production of bioplastic from various raw materials and recycling wastewater into useful bioproducts by bacteria. In addition, it also addresses the recent advancement in pest control in rice plants, different methods to analyse genotoxicity on soil samples and the effect of phytocompounds on acrylamide-induced toxicity in Drosophilla. Interestingly, this book also discusses mesoporous silica nanoparticles' role as nanocarrier material for inhibiting the cancer cell, especially breast cancer and various biotechnological applications of marine fungal exopolysaccharides.

Download or read book Membrane and Desalination Technologies written by Lawrence K. Wang and published by Springer Science & Business Media. This book was released on 2010-12-01 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this essential new volume, Volume 13: Membrane and Desalination Technologies, a panel of expert researchers provide a wealth of information on membrane and desalination technologies. An advanced chemical and environmental engineering textbook as well as a comprehensive reference book, this volume is of high value to advanced graduate and undergraduate students, researchers, scientists, and designers of water and wastewater treatment systems. This is an essential part of the Handbook of Environmental Engineering series, an incredible collection of methodologies that study the effects of pollution and waste in their three basic forms: gas, solid, and liquid. Chapters adopt the series format, employing methods of practical design and calculation illustrated by numerical examples, including pertinent cost data whenever possible, and exploring in great detail the fundamental principles of the field. Volume 13: Membrane and Desalination Technologies is an essential guide for researchers, highlighting the latest developments in principles of membrane technology, membrane systems planning and design, industrial and municipal waste treatments, desalination requirements, wastewater reclamation, biofiltration, and more.

Download or read book Water Reuse written by Water Resources Scientific Information Center and published by . This book was released on 1973 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Systems Reviews written by and published by . This book was released on 1999 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: