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FREE FALL SETTLING [3 records]
Record 1 - internal organization data 2016-02-29
Record 1, English
Record 1, Subject field(s)
- Chemical Engineering
- Wastewater Treatment
Record 1, Main entry term, English
- free-settling
1, record 1, English, free%2Dsettling
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- unhindered settling 2, record 1, English, unhindered%20settling
correct
- free settling 3, record 1, English, free%20settling
correct
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, Key term(s)
- unhindered sedimentation
- free fall settling
- free fall sedimentation
Record 1, French
Record 1, Domaine(s)
- Génie chimique
- Traitement des eaux usées
Record 1, Main entry term, French
- sédimentation libre
1, record 1, French, s%C3%A9dimentation%20libre
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- sédimentation diffuse 2, record 1, French, s%C3%A9dimentation%20diffuse
correct, feminine noun
- décantation diffuse 2, record 1, French, d%C3%A9cantation%20diffuse
correct, feminine noun
- sédimentation en chute libre 2, record 1, French, s%C3%A9dimentation%20en%20chute%20libre
correct, feminine noun
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, Key term(s)
- décantation libre
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2016-02-29
Record 2, English
Record 2, Subject field(s)
- Chemical Engineering
- Wastewater Treatment
Record 2, Main entry term, English
- hindered settling
1, record 2, English, hindered%20settling
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
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, French
Record 2, Domaine(s)
- Génie chimique
- Traitement des eaux usées
Record 2, Main entry term, French
- décantation en piston
1, record 2, French, d%C3%A9cantation%20en%20piston
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- sédimentation freinée 2, record 2, French, s%C3%A9dimentation%20frein%C3%A9e
correct, feminine noun
- sédimentation en piston 2, record 2, French, s%C3%A9dimentation%20en%20piston
correct, feminine noun
- décantation freinée 1, record 2, French, d%C3%A9cantation%20frein%C3%A9e
correct, feminine noun
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, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2001-03-28
Record 3, English
Record 3, Subject field(s)
- Wastewater Treatment
Record 3, Main entry term, English
- hindered fall 1, record 3, English, hindered%20fall
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, 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 3, English, - hindered%20fall
Record number: 3, 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 3, English, - hindered%20fall
Record number: 3, Textual support number: 1 OBS
As opposed to "free fall." 1, record 3, English, - hindered%20fall
Record 3, French
Record 3, Domaine(s)
- Traitement des eaux usées
Record 3, Main entry term, French
- chute gênée
1, record 3, French, chute%20g%C3%AAn%C3%A9e
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, 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 3, French, - chute%20g%C3%AAn%C3%A9e
Record number: 3, 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 3, French, - chute%20g%C3%AAn%C3%A9e
Record 3, Spanish
Record 3, Textual support, Spanish
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