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Adsorptive Fouling And Flux Decline Of Microfiltration Membranes For Activated Sludge Basin Effluents
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Book Synopsis Adsorptive Fouling and Flux Decline of Microfiltration Membranes for Activated Sludge Basin Effluents by : Joel Conard Donalson
Download or read book Adsorptive Fouling and Flux Decline of Microfiltration Membranes for Activated Sludge Basin Effluents written by Joel Conard Donalson and published by . This book was released on 2010 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flux decline due to membrane fouling is a significant impediment to the practical use of membrane bioreactors. Dissolved organic substances such as soluble microbial products have been found to be the most significant fouling substances in membrane bioreactors. In this study several microfiltration membranes were operated in dead-end filtration using effluents from activated sludge basins operating under different conditions at four wastewater treatment plants to analyze flux decline under adsorptive fouling conditions. Clean membrane characteristics such as contact angle and zeta potential were used in conjunction with water quality analysis of organic carbon polarity distribution, dissolved organic carbon concentration, ultraviolet absorbance at 254 nm, and pH to infer relationships between membrane surface characteristics and effluent characteristics which influence flux decline. Fouled membranes were analyzed using ATR-FTIR to provide an indication of which functional groups are adsorbed to membrane surfaces. The findings indicate that differences in flux decline relate to the binding affinity of membranes for proteins and polysaccharides, and that process parameters such as food-to-microorganism ratio, solids retention time, and temperature, which influence activated sludge characteristics, have an impact on adsorptive fouling. In this study the polarity distribution of dissolved organic carbon in the samples was not found to correspond well to membrane fouling. The method explained here for analyzing membrane fouling serves as the basis for a framework from which to evaluate the operation of biological treatment processes with regard to membrane fouling in membrane bioreactors.
Book Synopsis Adsorptive fouling and flux decline of microfiltration membranes for activated sludge basin effluents : thesis by : Joel Conard Donalson
Download or read book Adsorptive fouling and flux decline of microfiltration membranes for activated sludge basin effluents : thesis written by Joel Conard Donalson and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fouling and Flux Decline of Reverse Osmosis (RO), Nanofiltration (NF), and Ultrafiltration (UF) Membranes Associated with Effluent Organic Matter (EfOM) During Wastewater Reclamation/reuse by : Chalor Jarusutthirak
Download or read book Fouling and Flux Decline of Reverse Osmosis (RO), Nanofiltration (NF), and Ultrafiltration (UF) Membranes Associated with Effluent Organic Matter (EfOM) During Wastewater Reclamation/reuse written by Chalor Jarusutthirak and published by . This book was released on 2002 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fouling of Low Pressure Membranes by Municipal Wastewater by : Claudia Laabs
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.
Author :Lyonnaise des eaux-Dumez (Firm) Publisher :McGraw-Hill Professional Publishing ISBN 13 : Total Pages :744 pages Book Rating :4.3/5 (91 download)
Book Synopsis Water Treatment Membrane Processes by : Lyonnaise des eaux-Dumez (Firm)
Download or read book Water Treatment Membrane Processes written by Lyonnaise des eaux-Dumez (Firm) and published by McGraw-Hill Professional Publishing. This book was released on 1996 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: With global demand for water in the 20th century expected to increase ten-fold, this work focuses on the membrane filtration issues for drinking water.
Book Synopsis Membrane Bioreactors for Wastewater Treatment by : Thomas Stephenson
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
Book Synopsis Membrane Biological Reactors by : Faisal I. Hai
Download or read book Membrane Biological Reactors written by Faisal I. Hai and published by IWA Publishing. This book was released on 2013-11-01 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the MBR market has experienced unprecedented growth. The best practice in the field is constantly changing and unique quality requirements and management issues are regularly emerging. Membrane Biological Reactors: Theory, Modeling, Design, Management and Applications to Wastewater Reuse comprehensively covers the salient features and emerging issues associated with the MBR technology. The book provides thorough coverage starting from biological aspects and fundamentals of membranes, via modeling and design concepts, to practitioners’ perspective and good application examples. Membrane Biological Reactors focuses on all the relevant emerging issues raised by including the latest research from renowned experts in the field. It is a valuable reference to the academic and professional community and suitable for undergraduate and postgraduate teaching in Environmental Engineering, Chemical Engineering and Biotechnology. Editors: Faisal I. Hai, University of Wollongong, Australia Kazuo Yamamoto, University of Tokyo, Japan Chung-Hak Lee, Seoul National University, Korea.
Book Synopsis Drinking Water Treatment by : Bingzhi Dong
Download or read book Drinking Water Treatment written by Bingzhi Dong and published by Walter de Gruyter GmbH & Co KG. This book was released on 2021-12-20 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date overview on the membrane technology for the drinking water treatment. The applications of PVDF-TiO2 nanowire hybrid ultrafiltration membrane, nanofiltration membrane, forward osmosis membrane, etc. in water treatment are discussed in detail. With abundant practical examples, the book is an essential reference for scientists, students and engineers in municipal engineering, environmental engineering, chemical engineering, environmental chemistry and material science.
Book Synopsis Membrane-based Hybrid Processes for Wastewater Treatment by : Maulin P. Shah
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 2021-06-03 with total page 726 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
Book Synopsis Modelling of the Microfiltration Process by : Zhan Wang
Download or read book Modelling of the Microfiltration Process written by Zhan Wang and published by Springer Nature. This book was released on 2023-04-12 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the editor's recently proposed mathematical models for flux prediction in membrane filtration. It also provides typical mathematical models used in the development of membrane fouling control and explains the step-by-step derivation of these models. The book then highlights how these mathematical models provide insights into the mechanisms of membrane fouling and cleaning to allow for a better understanding of the complete membrane filtration process. Given its scope, this book appeals to a broad readership, particularly professionals at universities as well as engineers engaged in membrane separation in an industrial process.
Download or read book The MBR Book written by Simon Judd and published by Elsevier. This book was released on 2011-04-18 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MBR Book
Book Synopsis Membrane Technology by : Suzana Pereira Nunes
Download or read book Membrane Technology written by Suzana Pereira Nunes and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane Technology - a clean and energy saving alternative to traditional/conventional processes. Developed from a useful laboratory technique to a commercial separation technology, today it has widespread and rapidly expanding use in the chemical industry. It has established applications in areas such as hydrogen separation and recovery of organic vapors from process gas streams, and selective transport of organic solvents, and it is opening new perspectives for catalytic conversion in membrane reactors. Membrane technology provides a unique solution for industrial waste treatment and for controlled production of valuable chemicals. This book outlines several established applications of membranes in the chemical industry, reviews the available membranes and membrane processes for the field, and discusses the huge potential of this technology in chemical processes. Each chapter has been written by an international leading expert with extensive industrial experience in the field.
Book Synopsis Application of Nonwoven Microfiltration Membrane on Activated Sludge Final Effluent: Improving Wastewater Quality for Re-use by :
Download or read book Application of Nonwoven Microfiltration Membrane on Activated Sludge Final Effluent: Improving Wastewater Quality for Re-use written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water scarcity is one of the biggest problems that South Africa is facing currently, as a results it limits economic and social development. The application of membrane technology in wastewater treatment for re-use is one of the alternatives to reduce the demand of water in domestic, agricultural and industrial sectors. The primary aim of this study was to improve effluent wastewater quality prior to disinfection for re-use. This was done by diverting biological nutrient removal (BNR) clarifier effluent to a pilot nonwoven membrane filtration unit. The physical barrier provided by this unit, together with the effect of aeration within this system, provided particulate, physicochemical, and microbial removal. Monitoring of water quality was attained from the BNR clarifier effluent, and the nonwoven membrane permeate. Water quality trends against the standards were analysed for compliance with a water use license (WUL), and the removal efficiency for the permeate was also determined.
Book Synopsis An Evaluation of Fouling Potential and Methods to Control Fouling in Microfiltration Membranes for Secondary Wastewater Effluent by : Shannon Rachel Holman
Download or read book An Evaluation of Fouling Potential and Methods to Control Fouling in Microfiltration Membranes for Secondary Wastewater Effluent written by Shannon Rachel Holman and published by . This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Membrane Fouling in Constant Permeate Flux Cross-flow Microfiltration of Biological Solutions by : Maja Stressmann
Download or read book Membrane Fouling in Constant Permeate Flux Cross-flow Microfiltration of Biological Solutions written by Maja Stressmann and published by . This book was released on 2008 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis investigates the fouling of a microfiltration membrane by biological solutions. Membrane fouling is recognized as a major drawback for the application of microfiltration in the purification of biotechnology products. Membrane fouling was analyzed and compared for filtrations performed with a hollow fiber microfiltration module operated at constant permeate flux using bovine serum albumin (BSA) solutions or Chinese hamster ovary (CHO) cell culture broths as feed solutions. A mechanistic model was developed to represent the fouling of a cross-flow microfiltration membrane operated at constant permeate flux. Fouling was observed as an increase in the transmembrane pressure (TMP) and assumed to occur first by pore blockage followed by cake formation over the blocked pores. The effect of the cross-flow action was described by the removal of deposits from the membrane surface thereby reducing the pore blockage and the mass of the cake. The model was fitted to the TMP profiles obtained during the filtration of BSA solutions and Chinese hamster ovary (CHO) cell culture broths with a 0.45 [mu]m polysulfone hollow fiber membrane. According to the fitted model, pores blocked faster and more cake was formed with increasing BSA concentration. In the case of CHO cell culture broth, increasing the wall shear rate (proportional to cross-flow velocity) seemed to lead to the formation of a less pronounced cake but more pore blockage. The cross-flow mechanistic model was applied to the microfiltration of CHO cell culture supernatants harvested at different days of the fermentation process. The filtrations were performed at two different shear rates and with two different membrane pore sizes. The cell culture supernatant caused membrane fouling observed as an increase in both the TMP and the membrane hydraulic resistance estimated from water flux measurements at the end of the filtrations. The highest TMP increase was observed for the filtrations with the smaller membrane pore size (0.2 [mu]m) and the higher shear rate (8000 s-1). The hydraulic resistance estimates of the fouled membrane also revealed a higher irreversible fouling for the smaller (0.2 [mu]m) membrane pore size while the model analysis indicates that more fouling occurred at the entrance of the membrane pores. The shear rate was found to strongly influence the contribution of the reversible fouling to the total hydraulic resistance of the membrane. The cross-flow mechanistic model indicates a higher pore blockage for the most severe membrane fouling observed experimentally for the smaller membrane pore size and the higher shear rate. At the same time, a smaller cake deposit was predicted for the higher shear rate. The different cell culture harvest time investigated in this study did not reveal any differences in membrane fouling. BSA solutions were used to evaluate the contribution of BSA aggregates, fresh cell culture medium and the non-ionic surfactant Pluronic F-68 to membrane fouling. A simple empirical model was developed to represent the TMP increase and to derive the initial fouling rate. The initial fouling rate, the normalized TMP and the irreversible membrane resistance at the end of the filtration were analyzed to determine the effect of BSA solution characteristics on membrane fouling. The initial fouling rate increased with increasing BSA aggregate content consistent with a two-step fouling mechanism that was proposed for membrane fouling by BSA. Increased BSA concentration and the use of fresh cell culture medium compared to potassium phosphate buffer resulted in an increase in initial fouling rate, TMP and irreversible membrane fouling. The addition of the non-ionic surfactant Pluronic-F68 to the BSA solutions decreased the long-term fouling and the irreversible fouling but did not affect the initial fouling rate.
Book Synopsis TOWARDS EFFICIENT WATER TREATMENT by :
Download or read book TOWARDS EFFICIENT WATER TREATMENT written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : This research study first reviewed challenges of conventional and membrane separation systems for water treatment. Though membrane separation systems appeared superior to the conventional counterparts for water and wastewater treatment, wider applications of membrane systems have been limited by some factors, most notably is membrane fouling. Experimental studies were therefore conducted to achieve the goal of this research, which is to investigate how feed properties affect fouling of ultrafiltration (UF) membranes by colloids. Feed salinity, pH, and nanoparticle concentration were the variables studied to unravel how different UF membranes are fouled by model silica colloids (with average diameter of 25nm). These variables were varied across levels that have practical importance. Results obtained show that ultrafiltration gave high separation efficiency to the nanoparticles with rejection in most cases. Electrostatic interactions in the system impacted by changes in feed pH and salinity were found to affect the ultrafiltration of the model water samples. It was also observed that increase in silica colloid concentration increases rate of permeate flux decline for all the membranes used. When experimental data were fitted with the blocking laws, it was observed that no single law adequately described all the experimental results. However, cake filtration model sufficiently described most of the results.
Book Synopsis Membranes for Water Treatment by : Klaus-Viktor Peinemann
Download or read book Membranes for Water Treatment written by Klaus-Viktor Peinemann and published by John Wiley & Sons. This book was released on 2010-11-29 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This ready reference on Membrane Technologies for Water Treatment, is an invaluable source detailing sustainable, emerging processes, to provide clean, energy saving and cost effective alternatives to conventional processes. The editors are internationally renowned leaders in the field, who have put together a first-class team of authors from academia and industry to present a highly approach to the subject. The book is an instrumental tool for Process Engineers, Chemical Engineers, Process Control Technicians, Water Chemists, Environmental Chemists, Materials Scientists and Patent Lawyers.
