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Intermittent Sand Filters And Their Biology
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Book Synopsis Intermittent Sand Filters and Their Biology by : Wilson Thayer Calaway
Download or read book Intermittent Sand Filters and Their Biology written by Wilson Thayer Calaway and published by . This book was released on 1957 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Assessment of Intermittent Sand Filters by : Damann L. Anderson
Download or read book Technology Assessment of Intermittent Sand Filters written by Damann L. Anderson and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :New Zealand. Civil Engineering Division. Public Health Engineering Section Publisher : ISBN 13 : Total Pages :11 pages Book Rating :4.:/5 (154 download)
Book Synopsis Intermittent Biological Sand Filters for Wastewater Treatment by : New Zealand. Civil Engineering Division. Public Health Engineering Section
Download or read book Intermittent Biological Sand Filters for Wastewater Treatment written by New Zealand. Civil Engineering Division. Public Health Engineering Section and published by . This book was released on 1982 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Intermittent Sand Filters by : Mohd. Asri Md. Nor
Download or read book Performance of Intermittent Sand Filters written by Mohd. Asri Md. Nor and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Application of Intermittent Sand Filters to the Removal of Bio-chemical Oxygen Demand from Septic Sewage by : Allen Keene Henry
Download or read book A Study of the Application of Intermittent Sand Filters to the Removal of Bio-chemical Oxygen Demand from Septic Sewage written by Allen Keene Henry and published by . This book was released on 1947 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intermittent Sand Filtration to Upgrade Existing Wastewater Treatment Facilities by : Gary R. Marshall
Download or read book Intermittent Sand Filtration to Upgrade Existing Wastewater Treatment Facilities written by Gary R. Marshall and published by . This book was released on 1974 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clogging in Intermittently Dosed Sand Filters Used for Wastewater Treatment by : Harold Lawrence Leverenz
Download or read book Clogging in Intermittently Dosed Sand Filters Used for Wastewater Treatment written by Harold Lawrence Leverenz and published by . This book was released on 2008 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical and Biological Surveys of the Waters of Illinois by : Illinois State Water Survey
Download or read book Chemical and Biological Surveys of the Waters of Illinois written by Illinois State Water Survey and published by . This book was released on 1914 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Intermittent Slow Sand Filters by : Magdalena Pachocka
Download or read book Intermittent Slow Sand Filters written by Magdalena Pachocka and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: As many as 500,000 people in developing countries rely on an intermittent slow sand filter, called the BioSand filter to provide safe drinking water. However, it has been shown that BioSand filters do not remove all of the pathogens. The mechanisms of water purification in slow sand filtration have not been clearly understood until this day. In order to successfully influence intermittent slow sand filters performance we need to have a full understanding of removal processes that govern their efficiency. In the first part of this study pathogen removal mechanisms in intermittent slow sand filtration were investigated. In the second part of this study the effect on pathogen removal of a zero-valent iron-sand mixed layer, placed at the bottom of an intermittent slow sand filter was investigated. A series of experiments was performed on sand columns ripened with creek water. It was shown that the majority of E.coli was removed during filtration through the schmutzdecke, while the residence time in the biologically active layer did not have a significant effect on its removal. Quite to the contrary, the majority of MS-2 virus was removed with the residence time in the biologically active layer while the filtration through the schmutzdecke did not have significant affect on its removal. Clearly, two different mechanisms govern bacteria and virus removal in intermittent slow sand filtration. The EDX analysis of the schmutzdecke material revealed that it was primarily composed of O, C, Si, Al, Fe, Ca, and Mn. The zeta potential analysis showed that the schmutzdecke was neutral in charge and was composed of positively, neutrally and negatively charged particles. It was determined that a flocculation process was not a likely mechanism of either E.coli or MS-2 removal in intermittent slow sand filtration. The disturbance of the schmutzdecke had a significant impact on E.coli removal but only a slight effect on MS-2 removal. The intricate internal structure of the schmutzdecke might affect bacteria removal by an increase in rate of collisions. The disturbance of the schmutzdecke may cause the water to bypass the treatment in the schmutzdecke "network" of polymeric strands. It was concluded that an additional treatment step is needed in order to efficiently remove viruses; that the residence time in the schmutzdecke affects the quality of the effluent.; that the disturbance of the schmutzdecke might lead to a significant compromise in water quality and thus should be avoided; and that the addition of Al or Fe into the filter influent might benefit the pathogen removal efficiency. In the second part of the study an intermittent slow sand filter was amended with a zero-valent iron-sand mixture at the bottom of the column in order to improve its performance, especially virus removal. In the first challenge experiment the ZVI amended filter removed 100% of both E.coli and MS-2. Although, in the second challenge experiment the zero-valent iron-sand layer caused a decrease in E.coli/MS-2 concentration for unknown reasons, both E.coli and MS-2, exhibited breakthrough in the effluent. The ZVI powder can be obtained by sieving iron filings which are a waste byproduct of iron industry. Therefore, it is readily available to communities in developing countries. It was shown that use of ZVI in an intermittent slow sand filter can greatly improve its safety. However, the mechanisms responsible for this benefit and limitations of ZVI are not yet explained and deserve to be investigated.
Book Synopsis Chemical and Biological Survey of the Waters of Illinois by :
Download or read book Chemical and Biological Survey of the Waters of Illinois written by and published by . This book was released on 1914 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical and Biological Survey of the Waters of Illinois by : Illinois State Water Survey
Download or read book Chemical and Biological Survey of the Waters of Illinois written by Illinois State Water Survey and published by . This book was released on 1912 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin ...: Chemical and biological survey of the waters of Illinois, 1906 by :
Download or read book Bulletin ...: Chemical and biological survey of the waters of Illinois, 1906 written by and published by . This book was released on 1913 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA-600/2 written by and published by . This book was released on 1979 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Separation of Algal Cells from Wastewater Lagoon Effluents by : Steven E. Harris
Download or read book Separation of Algal Cells from Wastewater Lagoon Effluents written by Steven E. Harris and published by . This book was released on 1978 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis N-removal in Intermittently Loaded Biological Sand Filters by : A. K. Høier
Download or read book N-removal in Intermittently Loaded Biological Sand Filters written by A. K. Høier and published by . This book was released on 1995 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stimulation of Biological Denitrification in Columns Representing Recirculating Sand Filters by : Lawrence D. Fay
Download or read book Stimulation of Biological Denitrification in Columns Representing Recirculating Sand Filters written by Lawrence D. Fay and published by . This book was released on 1982 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Society of Civil Engineers. Task Committee on Slow Sand Filtration Publisher :American Society of Civil Engineers ISBN 13 : Total Pages :244 pages Book Rating :4.:/5 (29 download)
Book Synopsis Slow Sand Filtration by : American Society of Civil Engineers. Task Committee on Slow Sand Filtration
Download or read book Slow Sand Filtration written by American Society of Civil Engineers. Task Committee on Slow Sand Filtration and published by American Society of Civil Engineers. This book was released on 1991 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarises current practice regarding slow sand filtration in the US. It examines topics such as the biological and physical mechanisms, appropriate water quality, micro-organisms removal, filter design, construction, operation, maintenance, costs and pilot studies.