TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

In classification, free fall of particles through a fluid medium, as opposed to hindered settling.  1, record 1, English, - free%2Dsettling

Record number: 1, Textual support number: 1 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.  2, record 1, English, - free%2Dsettling

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 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.  2, record 1, French, - s%C3%A9dimentation%20libre

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

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.  2, record 2, English, - hindered%20settling

Record number: 2, Textual support number: 2 CONT

Another type of clarifier is the "high rate thickener" or round clarifier. Rake arms are incorporated into the design much like a conventional thickener. This design works well with lower percent solids feed into the system, but as percent solids increase "hindered settling" is a problem often encountered with this design.  3, record 2, English, - hindered%20settling

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Pour des concentrations élevées, l'abondance des flocs crée une décantation d'ensemble freinée, caractérisée par une interface nettement marquée entre la masse boueuse et le liquide surnageant : c'est la décantation en piston.  2, record 2, French, - d%C3%A9cantation%20en%20piston

Record number: 2, Textual support number: 2 CONT

décantation freinée : La décantation freinée est caractéristique des boues activées et des suspensions chimiques floculées quand leur concentration est supérieure à 500 mg/1. Les particules adhèrent entre elles et la masse décante en piston formant une interface entre les flocs et le liquide surnageant.  2, record 2, French, - d%C3%A9cantation%20en%20piston

Record number: 2, Textual support number: 3 CONT

[...] La décantation : Le phénomène de décantation peut se manifester différemment selon la concentration de la suspension, les caractéristiques propres des particules et les interactions possibles entre elles. [...] décantation diffuse des particules floculées : Les particules peuvent s'agglutiner (coalescence), elles floculent (forment des agrégats) et décantent avec une vitesse croissante. [...] il existe le processus de décantation freinée ou en piston pour des matières solides floculées supérieures à 500 mg/l.  3, record 2, French, - d%C3%A9cantation%20en%20piston

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A local mass movement that involves principally the gradual downward settling or sinking of the solid Earth's surface with little or no horizontal motion and that does not occur along a free surface(not the result of a landslide or failure of a slope).  2, record 3, English, - subsidence

Record number: 3, Textual support number: 1 PHR

Subsidence of basins.  3, record 3, English, - subsidence

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Enfoncement progressif, régulier ou saccadé, pendant une assez longue période, [...] du fond d'un bassin sédimentaire, marin ou non.  2, record 3, French, - subsidence

Record number: 3, Textual support number: 1 PHR

Subsidence de bassin.  3, record 3, French, - subsidence

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 DEF

Hundimiento progresivo del fondo de una cuenca de sedimentación, lo que permite la acumulación de grandes espesores de sedimentos con una pequeña profundidad de agua.  2, record 3, Spanish, - subsidencia

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

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.  2, record 4, English, - hindered%20fall

Record number: 4, Textual support number: 2 CONT

Another type of clarifier is the "high rate thickener" or round clarifier. Rake arms are incorporated into the design much like a conventional thickener. This design works well with lower percent solids feed into the system, but as percent solids increase "hindered settling" is a problem often encountered with this design.  3, record 4, English, - hindered%20fall

Record number: 4, Textual support number: 1 OBS

As opposed to "free fall."  1, record 4, English, - hindered%20fall

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Cette chute gênée s'observe dans la zone de stockage des boues et au voisinage immédiat du radier dans les décanteurs à surfaces de dépôts [...] (Le traitement des eaux publiques, industrielles et privées, 1978, p. 83).  1, record 4, French, - chute%20g%C3%AAn%C3%A9e

Record number: 4, Textual support number: 1 OBS

[...] la décantation : Le phénomène de décantation peut se manifester différemment selon la concentration de la suspension, les caractéristiques propres des particules et les interactions possibles entre elles. On distingue deux types de matières décantables : - les particules grenues qui se sédimentent avec une vitesse de chute constante. - les particules plus ou moins floculées qui résultent d'une agglomération naturelle ou provoquée des matières colloïdales en suspension. [...] décantation diffuse des particules floculées : Les particules peuvent s'agglutiner (coalescence), elles floculent (forment des agrégats) et décantent avec une vitesse croissante. [...] il existe le processus de décantation freinée ou en piston pour des matières solides floculées supérieures à 500 mg/l.  2, record 4, French, - chute%20g%C3%AAn%C3%A9e

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

Settling of particles in a thick suspension in water through which their fall is hindered by rising water.  2, record 5, English, - hindered%20settling

Record number: 5, Textual support number: 1 CONT

Hindered settling takes place where particles of mixed sizes, shapes, and gravities in a crowded mass, yet free to move among themselves, are sorted in a rising current of water, the velocity of which is much less than the free-falling velocity of the particles yet fast enough so that the particles are in motion.  3, record 5, English, - hindered%20settling

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Sédimentation dans laquelle les grains voient leur vitesse de chute naturelle réduite par les chocs et frottements entre particules. C'est le mode de sédimentation qui intervient au sein des suspensions relativement concentrées.  3, record 5, French, - s%C3%A9dimentation%20entrav%C3%A9e

Record 5,  Textual support,  Spanish