Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Effect Of Coagulation Pretreatment On Membrane Filtration And Performance full books in PDF, epub, and Kindle. Read online Effect Of Coagulation Pretreatment On Membrane Filtration And Performance ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Kerry James Howe
Publisher :
ISBN 13 :
Total Pages : 446 pages
Book Rating : 4.:/5 (52 download)
Download or read book Effect of Coagulation Pretreatment on Membrane Filtration and Performance written by Kerry James Howe and published by . This book was released on 2001 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kerry J. Howe
Publisher : American Water Works Association
ISBN 13 : 1583212655
Total Pages : 296 pages
Book Rating : 4.5/5 (832 download)
Download or read book Coagulation Pretreatment for Membrane Filtration written by Kerry J. Howe and published by American Water Works Association. This book was released on 2002 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research report evaluates the fouling and flux decline performance of membranes after the source water is pretreated with coagulation, and identifies the conditions under which coagulation can improve membrane performance as well as the mechanisms that cause natural waters to foul membranes. Conducted at the University of Illinois, the experiments involved collecting raw water from lakes and rivers, coagulating the water in the laboratory, characterizing the physical and chemical composition of the water before and after coagulation, measuring flux decline as the water was filtered through MF and UF membranes, and examining the fouled membranes with scanning electron microscopy. No index is provided. Annotation copyrighted by Book News, Inc., Portland, OR
Author : Ashish Marwah
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (632 download)
Download or read book Effect of Pretreatment and Foulant Size on Membrane Filtration Performance written by Ashish Marwah and published by . This book was released on 2005 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michelle Marie Sharp
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (62 download)
Download or read book Determining the Effects of Different Modes of Coagulation as Pretreatment to Membrane Filtraton of Drinking Water Production in Small Water Systems written by Michelle Marie Sharp and published by . This book was released on 2004 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is essential to find separation and purification methods that have the potential of producing water that will comply with the more stringent regulations that are being enacted. One such purification technique is membrane filtration, which is a treatment process that removes a wide majority of pathogens, water pollutants, and organic carbon. However, there are two major concerns associated with the use of membranes: one is the efficiency of the membrane (water flux and removal rate of impurities), and the other is membrane fouling, which often make this technology unfeasible, especially, for small systems. Small water systems are those that serve fewer than 3,300 people and very small water systems serve fewer than 500 people. These systems make up slightly more than 86% of the 58,908 community water systems in the United States. Small systems are the most frequent violators of federal regulations. The majority of cases against them are microbiological violations and failure to report and monitor. Bringing small systems into compliance will require technologies, operator ability, financial resources, and institutional arrangements. Membrane filtration is a relatively new technology that offers small systems a high efficiency, easy-to-operate alternative to improve the finished water quality and the biological stability of the finished water. However, the economic use of membrane filtration in small systems is often hindered by fouling, which increases applied pressure drops and cleaning frequencies, and the associated decrease in removal efficiency as the pressure drop increases. Coupling membrane filtration with pretreatment processes to decrease fouling is often avoided by small systems since it incurs additional construction costs and complicates operation. The objective of this work was to test different coagulation pre-treatment techniques to improve membrane filtration, namely ultrafiltration (UF). These four techniques were 1) conventional coagulation, 2) coagulant slurry on the membrane surface, 3) forming a dynamic coagulant-based layer on the membrane, and 4) injecting the coagulant into the feed line so that it runs inline with the raw water across the membrane. Results showed that the slurry and dynamic membrane's mode of operation achieved similar steady state flux values as UF alone and higher flux values than conventional coagulation pretreatment ahead of UF, while in-line coagulation displayed the worse flux decline. UF alone was ineffective in removing solids and dissolved organic carbon (DOC), while conventional coagulation, slurry, and dynamic UF modes rejected solids and DOC at similar rates. Through membrane autopsies, irreversible fouling measurements for the slurry and dynamic membrane modes were significantly lower than for the conventional coagulation mode.
Author : Leon S. Directo
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.F/5 ( download)
Download or read book Effect of Pretreatment on the Filtration of Low Turbidity Secondary Effluent written by Leon S. Directo and published by . This book was released on 1980 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : American Water Works Association
ISBN 13 : 1583214615
Total Pages : 196 pages
Book Rating : 4.5/5 (832 download)
Download or read book Optimization of Membrane Treatment for Direct and Clarified Water Filtration written by and published by American Water Works Association. This book was released on 2006 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Subject area: high-quality water"--Cover.
Author : University of Guelph. School of Engineering
Publisher :
ISBN 13 : 9780494232798
Total Pages : 106 pages
Book Rating : 4.2/5 (327 download)
Download or read book Use of Coagulation as a Pretreatment to Improve Membrane Filtration Performance for High Strength Wastewater from Municipal Solid Waste Anaerobic Digestion written by University of Guelph. School of Engineering and published by . This book was released on 2006 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leon S. Directo Ching-lin Chen Robert P. Miele
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.3/5 (91 download)
Download or read book Effect of Pre-treatment on the Filtration of Low Turbidity Secondary Effluent written by Leon S. Directo Ching-lin Chen Robert P. Miele and published by . This book was released on 1980 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ian R. Maguire
Publisher :
ISBN 13 :
Total Pages : 346 pages
Book Rating : 4.:/5 (497 download)
Download or read book The Effect of Coagulation Conditions on Floc Size Distribution and Morphology written by Ian R. Maguire and published by . This book was released on 2010 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coagulation and flocculation are commonly used in drinking water treatment as a means of destabilizing and aggregating particles and promoting adsorption of dissolved organic carbon (DOC). In practice, jar tests are used to determine optimal conditions for the removal of turbidity and DOC. However, beyond the inferences that can be made with respect to turbidity removal during the sedimentation (and/or coarse filtration) step, little attention is paid to details of the particle size distribution (PSD) and the morphology of the aggregates that are formed. These physical properties can strongly influence the efficiency of downstream processes (e.g., sedimentation, granular media filtration, and membrane filtration). A greater quantitative understanding of how coagulation conditions influence the size distribution and morphology of floc formed during water treatment is necessary. For example, the optimal PSD for efficient removal in sedimentation is likely very different than the desired PSD for direct filtration using membranes. Experiments were conducted using monodisperse polystyrene microspheres, polydisperse synthetic water (kaolin clay and humic acid), and natural waters. The focus the experimentation was to develop a new methodology for characterizing aggregate morphology and to apply that method to evaluate the influence of physical and chemical conditions on the resultant PSD, fractal dimension, and removal of DOC during coagulation. Samples were collected and analyzed using a Coulter Counter Multisizer 3 and a Brightwell Technology DPA 4100-D digital particle analyzer. PSDs based on solid volume (Coulter Counter) and maximum Feret's diameter (DPA 4100) allowed the determination of the fractal dimension using a modification of the two-slope method developed by Jiang and Logan (1996). Results from experiments conducted using latex microsphere destabilized in 0.6M NaCl show that distinguishable changes in the PSD and floc morphology due to changes in the mixing conditions can be observed using the methodology described in the following chapters. Microsphere coagulation was conducted at three distinct mixing conditions: flocculation, breakup, and regrowth. Flocculation mixing resulted in a dramatic reduction of primary particles as large porous floc were formed. These floc were characterized by a low three dimensional fractal dimension, D3, implying that the floc were loosely packed and had a low density. Restructuring was observed during breakup mixing that saw large floc broken up into multiple smaller and more compact floc, as characterized by an increase in D3. Regrowth allowed the floc size to recover from the restructuring of the breakup mixing phase, with the resultant floc being characterized by a D3 between that observed for the flocculation and breakup phases. Enhanced alum coagulation of synthetic and natural waters produced fragile floc which were difficult to characterize in terms of the fractal dimension as measured using the methodology validated using the latex microspheres. The difficulty in analyzing the large alum floc was likely caused by breakup during measurement. The results show that coagulant pretreatment significantly alters the size distribution of the feed water. Optimizing the coagulation conditions with respect to specific downstream processes has the potential to increase efficiency and decrease operational and maintenance costs.
Author : Isabel C. Escobar
Publisher :
ISBN 13 :
Total Pages : 45 pages
Book Rating : 4.:/5 (65 download)
Download or read book Effects of Different Modes of Coagulation as Pretreatment to Membrane Filtraton for Drinking Water Production in Small Systems written by Isabel C. Escobar and published by . This book was released on 2004 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Coagulation as Pretreatment for Improving Ultrafiltration Performance in Water and Wastewater Treatment [microform] PDF Online Free](https://books.google.com/books/content/images/frontcover/MdSjwgEACAAJ?fife=w200-h370)
Author : Youngseck Hong
Publisher : National Library of Canada = Bibliothèque nationale du Canada
ISBN 13 : 9780612906563
Total Pages : 141 pages
Book Rating : 4.9/5 (65 download)
Download or read book Coagulation as Pretreatment for Improving Ultrafiltration Performance in Water and Wastewater Treatment [microform] written by Youngseck Hong and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2004 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. Assiyeh Alizadeh Tabatabai
Publisher : CRC Press
ISBN 13 : 9781138026865
Total Pages : 0 pages
Book Rating : 4.0/5 (268 download)
Download or read book Coagulation and Ultrafiltration in Seawater Reverse Osmosis Pretreatment written by S. Assiyeh Alizadeh Tabatabai and published by CRC Press. This book was released on 2014-07-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the role of coagulation in enhancing hydraulic performance and permeate quality of UF membranes and provides insight into options for minimizing or ideally eliminating coagulation from UF pre-treatment to SWRO. Results show that coagulation improves UF hydraulic performance mainly by reducing non-backwashable fouling of the membranes. This can be achieved at very low coagulant dose (~ 0.5 mg Fe/L) by coating the membranes with sub-micron particles. Additionally, the work highlights the applicability of UF membranes with low molecular weight cut-off as the coagulant free future of SWRO pre-treatment. Major benefits in terms of reduced environmental impact is expected when applying membranes with low molecular weight cut-off, as the need for coagulation is eliminated while ensuring longevity of downstream SWRO membranes. In general terms, the research indicates that coagulant consumption can be significantly reduced in UF pre-treatment of SWRO by optimizing operational parameters and applying alternative solutions.
Author : Kyu-Jin Kim
Publisher :
ISBN 13 :
Total Pages : 644 pages
Book Rating : 4.:/5 (555 download)
Download or read book The Effect of Surface Pretreatment on the Performance of Ultrafiltration Membranes written by Kyu-Jin Kim and published by . This book was released on 1987 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John C. Crittenden
Publisher : John Wiley & Sons
ISBN 13 : 1119820065
Total Pages : 1956 pages
Book Rating : 4.1/5 (198 download)
Download or read book Stantec's Water Treatment written by John C. Crittenden and published by John Wiley & Sons. This book was released on 2022-11-08 with total page 1956 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated third edition of the definitive guide to water treatment engineering, now with all-new online content Stantec's Water Treatment: Principles and Design provides comprehensive coverage of the principles, theory, and practice of water treatment engineering. Written by world-renowned experts in the field of public water supply, this authoritative volume covers all key aspects of water treatment engineering, including plant design, water chemistry and microbiology, water filtration and disinfection, residuals management, internal corrosion of water conduits, regulatory requirements, and more. The updated third edition of this industry-standard reference includes an entirely new chapter on potable reuse, the recycling of treated wastewater into the water supply using engineered advanced treatment technologies. QR codes embedded throughout the book connect the reader to online resources, including case studies and high-quality photographs and videos of real-world water treatment facilities. This edition provides instructors with access to additional resources via a companion website. Contains in-depth chapters on processes such as coagulation and flocculation, sedimentation, ion exchange, adsorption, and gas transfer Details membrane filtration technologies, advanced oxidation, and potable reuse Addresses ongoing environmental concerns, pharmacological agents in the water supply, and treatment strategies Describes reverse osmosis applications for brackish groundwater, wastewater, and other water sources Includes high-quality images and illustrations, useful appendices, tables of chemical properties and design data, and more than 450 exercises with worked solutions Stantec's Water Treatment: Principles and Design, Updated Third Edition remains an indispensable resource for engineers designing or operating water treatment plants, and is an essential textbook for students of civil, environmental, and water resources engineering.
Author : John Bratby
Publisher : IWA Publishing
ISBN 13 : 1843391066
Total Pages : 421 pages
Book Rating : 4.8/5 (433 download)
Download or read book Coagulation and Flocculation in Water and Wastewater Treatment written by John Bratby and published by IWA Publishing. This book was released on 2006-10-15 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coagulation and Flocculation in Water and Wastewater Treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications. Thoroughly revised and updated since the 1st Edition it has been progressively modified and increased in scope to cater for the requirements of practitioners involved with water and wastewater treatment. A thorough gamut of treatment scenarios is attempted, including turbidity, color and organics removal, including the technical aspects of enhanced coagulation. The effects of temperature and ionic content are described as well as the removal of specific substances such as arsenic and phosphorus. Chemical phosphorus removal is dealt with in detail, Rapid mixing for efficient coagulant utilization, and flocculation are dealt with in specific chapters. Water treatment plant waste sludge disposal is dealt with in considerable detail, in an Appendix devoted to this subject. Invaluble for water scientists, engineers and students of this field, Coagulation and Flocculation in Water and Wastewater Treatment is a convenient reference handbook in the form of numerous examples and appended information.
Author : Rodolfo Medina-Rodriguez
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)
Download or read book The Impact of Water Pretreatment in Low Pressure Membrane Filtration Processes written by Rodolfo Medina-Rodriguez and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Akil Ahmad
Publisher : Springer Nature
ISBN 13 : 9811953155
Total Pages : 273 pages
Book Rating : 4.8/5 (119 download)
Download or read book Nanofiltration Membrane for Water Purification written by Akil Ahmad and published by Springer Nature. This book was released on 2023-02-04 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the basic and sustainable approach of nanofiltration membrane techniques along with their fabrication, characterization, separation mechanisms, and broad applications in the field of wastewater treatment. It provides a wide knowledge of nanofiltration technique to water purification audience concerning the recent development with various illustrations, methods and results for graduate students, scientists, academicians, researchers, and industrialists. Readers from wastewater and water purification will have a quick reference by exploring the research literature on the subject field with commercial value-added research applications of nanofiltration membrane.
