Abstract
Natural particles are frequently applied in drinking water treatment in up-flow fluidisation processes. Additionally, sedimentation processes are applied to clarify water and to concentrate solids. To estimate the terminal settling velocity of single solid particles in a liquid system, a comprehensive collection of equations is available. For perfectly round spheres, settling velocity can be calculated accurately. For naturally imperfect particles, however, experimentally measured settling velocity shows considerable deviation compared to calculated values. This article discusses a number of experiments demonstrating this deviation and the applicability of commonly used drag-coefficient equation by Brown-Lawler.
Original language | English |
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Title of host publication | 5th IWA Young Water Professionals BeNeLux conference |
Subtitle of host publication | Ghent, Belgium |
Number of pages | 3 |
Publication status | Published - 2017 |
Event | 5th IWA Young Water Professionals BeNeLux conference - Ghent, Belgium Duration: 5 Jul 2017 → 7 Jul 2017 Conference number: 5 http://www.ywpbenelux.org/ |
Conference
Conference | 5th IWA Young Water Professionals BeNeLux conference |
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Country/Territory | Belgium |
City | Ghent |
Period | 5/07/17 → 7/07/17 |
Internet address |
Keywords
- drinking water
- terminal settling velocity
- calcium carbonate pellets
- pellet softening
- garnet sand
- grained calcite seeding material
- drag coefficient