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HINDERED FALL [1 record]
Record 1 - internal organization data 2001-03-28
Record 1, English
Record 1, Subject field(s)
- Wastewater Treatment
Record 1, Main entry term, English
- hindered fall 1, record 1, English, hindered%20fall
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, 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 1, English, - hindered%20fall
Record number: 1, 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 1, English, - hindered%20fall
Record number: 1, Textual support number: 1 OBS
As opposed to "free fall." 1, record 1, English, - hindered%20fall
Record 1, French
Record 1, Domaine(s)
- Traitement des eaux usées
Record 1, Main entry term, French
- chute gênée
1, record 1, French, chute%20g%C3%AAn%C3%A9e
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, 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 1, French, - chute%20g%C3%AAn%C3%A9e
Record number: 1, 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 1, French, - chute%20g%C3%AAn%C3%A9e
Record 1, Spanish
Record 1, Textual support, Spanish
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