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Influence of flow field on sedimentation efficiency in a circular settling tank with peripheral inflow and central effluentBajcar, Tom ...The paper presents an experimental study of suspension flow patterns and velocity field inside a circular settling tank with continuous operation. Research was focused on the impact of a specific ... flow pattern on the sedimentation efficiency of the prototype settling tank. The latter differed from a common circular settling tank in that it was peripherally fed and had the central draw-off. Experiment was carried out on a settling tank section made of plexiglass and represented a radial slice of a prototype settling tank. The flow field and local suspension concentration was determined by computer-aided visualization. Sedimentation efficiency was assessed relatively by comparison of the amount of settled particles (sludge height measurements) between different types of flow in a certain time period of the settling tank operation. Results showed that there were two types of flow in the settling tank that were initiated by a horizontal or vertical inflow from the distribution ring. The type of inflow (horizontal or vertical) was a function of the suspension height in the settling tank. Significant differences in sedimentation efficiency were observed between both types of flow, particularly at lower inlet suspension concentrations. Horizontal inflow proved to be less efficient in terms of settling.Source: Chemical engineering and processing = Génie des procédés = Verfahrenstechnik. - ISSN 0255-2701 (Vol. 49, iss. 5, May 2010, str. 514-522)Type of material - article, component partPublish date - 2010Language - englishCOBISS.SI-ID - 11402267
Author
Bajcar, Tom |
Gosar, Leon |
Širok, Brane |
Steinman, Franci |
Rak, Gašper
Topics
usedalniki |
sedimentacija |
usedanje |
računalniško podprta vizualizacija |
tokovno polje |
settling tank |
sedimentation |
computer-aided visualization |
flow field
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source: Chemical engineering and processing = Génie des procédés = Verfahrenstechnik. - ISSN 0255-2701 (Vol. 49, iss. 5, May 2010, str. 514-522)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Bajcar, Tom | 21237 |
Gosar, Leon | 21524 |
Širok, Brane | 09286 |
Steinman, Franci | 09274 |
Rak, Gašper | 29190 |
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