TERMIUM Plus®

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FREE FALL SETTLING [1 record]

Record 1 2016-02-29

English

Subject field(s)
  • Chemical Engineering
  • Wastewater Treatment
DEF

In classification, free fall of particles through a fluid medium, as opposed to hindered settling.

OBS

When a discrete particle settles through a liquid in free fall, the liquid displaced by the particle moves upward through an area large enough not to interpose friction. In hindered settling by contrast, particles are spaced so closely that the displaced liquid is confined as in a pipe and the friction rises as the velocity fields around the individual particles interfere.

Key term(s)
  • unhindered sedimentation
  • free fall settling
  • free fall sedimentation

French

Domaine(s)
  • Génie chimique
  • Traitement des eaux usées
CONT

[...] on peut obtenir une floculation relativement peu abondante, de telle sorte que si on laisse au repos l'eau floculée chaque particule se dépose comme si elle était seule [...]. Le liquide se clarifie graduellement, un dépôt se forme au fond du bécher, c'est ce qu'on appelle une sédimentation libre ou diffuse.

Key term(s)
  • décantation libre

Spanish

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