Development of a New Model for Batch Sedimentation and Application to Secondary Settling Tanks Design

Development of a New Model for Batch Sedimentation and Application to Secondary Settling Tanks Design

Assuming that settling takes place in two zones (a constant rate zone and a variable rate zone), a model using four parameters accounting for the nature of the water-suspension system has been proposed for describing batch sedimentation processes. The sludge volume index (SVI) has been expressed in...

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Veröffentlicht in:Water Environment Research. - THE WATER ENVIRONMENT FEDERATION. - 77(2005), 7, Seite 3066-3073
1. Verfasser: Karamisheva, Ralica D. (VerfasserIn)
Weitere Verfasser: Islam, M. A.
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Water Environment Research
Schlagworte:Activated sludge Secondary settling Flux theory Sludge volume index Zone settling velocity Applied sciences Mathematics Physical sciences Economics
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520 |a Assuming that settling takes place in two zones (a constant rate zone and a variable rate zone), a model using four parameters accounting for the nature of the water-suspension system has been proposed for describing batch sedimentation processes. The sludge volume index (SVI) has been expressed in terms of these parameters. Some disadvantages of the SVI application as a design parameter have been pointed out, and it has been shown that a relationship between zone settling velocity and sludge concentration is more consistent for describing the settling behavior and for design of settling tanks. The permissible overflow rate has been related to the technological parameters of secondary settling tank by simple working equations. The graphical representations of these equations could be used to optimize the design and operation of secondary settling tanks. 
540 |a Copyright 2005 The Water Environment Federation (WEF) 
650 4 |a Activated sludge 
650 4 |a Secondary settling 
650 4 |a Flux theory 
650 4 |a Sludge volume index 
650 4 |a Zone settling velocity 
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650 4 |a Applied sciences  |x Research methods  |x Modeling 
650 4 |a Applied sciences  |x Materials science  |x Materials  |x Waste materials  |x Sludge 
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650 4 |a Physical sciences  |x Chemistry  |x Chemical mixtures  |x Suspended solids 
650 4 |a Mathematics  |x Mathematical expressions 
650 4 |a Mathematics  |x Mathematical procedures 
650 4 |a Economics  |x Economic disciplines  |x Financial economics  |x Finance  |x Interest  |x Interest rates  |x Variable interest rates  |x Research Papers 
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700 1 |a Islam, M. A.  |e verfasserin  |4 aut 
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