TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Mixed media filters, called "high rate filters", can be used at up to 6-8 gpm [feet to the minus 2 power] and achieve much deeper penetration into the bed as the particles in the surface layer are much larger.  1, record 1, English, - mixed%20media%20filter

Record number: 1, Textual support number: 1 OBS

Mixed-media : a deep-bed filtration system utilizing two or more dissimilar granular materials, e. g., anthracite, sand and garnet, blended by size and density to produce a composite filter media graded hydraulically after backwash from coarse to fine in the direction of flow.  3, record 1, English, - mixed%20media%20filter

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Il existe également des filtres à 3 et 4 couches [...] Leur prix est plus élevé, du fait [...] des matériaux fins et lourds (grenat...) [...] L'adoption de ce type de filtre à plusieurs couches a effectivement permis l'accroissement des vitesses de filtration et des durées de cycle [...]  2, record 1, French, - filtre%20%C3%A0%20plusieurs%20couches

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Plastic filter cloth is suitable for use in subdrainage trenches, blankets,... and in many other applications where graded filters are normally used.  1, record 2, English, - blanket

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Une toile filtrante de plastique peut s'employer dans des tranchées de drainage souterrain, comme tapis, [...] ainsi que dans de nombreuses autres applications où des filtres granulaires sont normalement utilisés.  1, record 2, French, - tapis

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Plastic filter cloth is suitable for use... around vertical gravel drains and in many other applications where graded filters are normally used.  2, record 3, English, - gravel%20drain

Record number: 3, Textual support number: 2 CONT

Tree planting.... Make sure the bottom of the hole is above the ground water level and is well drained by surrounding soil. If this does not occur, a gravel pad lifting the roots above water or an auger-bored gravel drain to percolating subsoil may be necessary.  3, record 3, English, - gravel%20drain

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Une toile filtrante de plastique peut s'employer [...] autour des drains verticaux de gravier, ainsi que dans de nombreuses autres applications où des filtres granulaires sont normalement utilisés.  1, record 3, French, - drain%20de%20gravier

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Monitoring wells should effectively achieve one or more of the following objectives: Provide access to the groundwater system for collection of water samples ... Measure the hydraulic head at a specific location in the groundwater flow system ... Provide access for conducting tests or collecting information necessary to characterize the aquifer materials or their hydrologic properties.  3, record 4, English, - monitoring%20well

Record number: 4, Textual support number: 1 OBS

Figure 6. 1 illustrates a typical open disposal trench at the Barnwell facility. The trench floor is sloped slightly and covered with a layer of sand to facilitate collection of percolating water in a French drain. A number of pipes allow any water that may collect in the French drain to be removed and analyzed. Presently waste, primarily in boxes, drums and cask liners, is stacked neatly in the trench... As the level of the waste reaches the design level, 2 m below grade, a layer of dry soil is added and allowed to filter down between the waste containers. When a trench is filled, it is covered with a cap of at least 0. 6 m of compacted native clay, followed by at least 0. 9 m of soil. The cap is graded to shed water and seeded with grass. The sump in each trench is monitored for at least 5 years and any subsidence in the cap is filled to maintain its water-shedding ability. Monitoring wells at the perimeter of the facility have not detected migration of nuclides after more than 15 years of operation.  4, record 4, English, - monitoring%20well

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Puits d'observation servant à détecter l'apparition de signes prémonitoires d'une évolution prévisible, préjudiciable en général, soit des niveaux, soit de la qualité de l'eau d'une nappe, pour avertir de l'opportunité des mesures de prévention ou de précaution à prendre.  4, record 4, French, - puits%20de%20surveillance

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

pozo indicador: Pozo de observación que se utiliza para observar la aparición de una condición prevista, generalmente no deseable, como el avance del frente de agua salada en el área costera donde se produce la intrusión de agua salada, o el movimiento de un contaminante que se introduce en una fosa séptica.  1, record 4, Spanish, - pozo%20indicador

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Factors influencing the filtration performance of geotextile can be classified into four categories-external conditions(hydraulic gradient and loading state) ;(bio) chemical conditions of fluent(pH, hardness(e. g. [Fe], [Mn], [Mg], [Ca]), redox potential(Eh) for iron ochre, BOD and COD of water(substrate type/concentration), osmotic pressure and dissolved oxygen) ;the properties of basement material(coefficient of uniformity(Cu), coefficient of gradation(Cc), plastic index(PI), double hydrometer ratio(DHR) for dispersive clay, particle shape and grain hardness for granular soil, compaction degree of soil and saturation degree) ;and the properties of geotextile(filtration opening size(FOS), apparent opening size(AOS), fiber density, textile bulk density(mass/area), porosity, thickness and fiber material)... screen test results clearly indicated that the height of self filtration is proportional to the constriction size(D_c) of granular filter used. Additionally, they suggested the filter opening size value should be within the range between d₅₀ and d₈₀ for linearly graded soil and within the flat range in gap graded soil.  2, record 5, English, - opening%20size

Record number: 5, Textual support number: 1 OBS

Symbol: O_f  3, record 5, English, - opening%20size

Record number: 5, Textual support number: 2 OBS

Compare with "apparent opening size (AOS)" and "filtration opening size (FOS)."  3, record 5, English, - opening%20size

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Pour les géotextiles utilisés comme filtres, on mesurera par commodité la probabilité de passage des particules de sol d'un diamètre connu. On assimile ainsi le géotextile à un tamis. On enregistre la taille maximale des particules traversant le tamis, mesure assimilée à un diamètre, d'où l'expression «diamètre de filtration». Plusieurs principes et méthodes sont actuellement utilisés pour définir cette caractéristique : tamisage à sec de billes de verre calibrées [...]; tamisage à sec de particules de sol [...]; tamisage de sol à l'humide [...]; tamisage de sol sous régime hydrodynamique.  4, record 5, French, - ouverture%20de%20filtration

Record number: 5, Textual support number: 2 CONT

Géotextiles. Détermination du diamètre d'ouverture de filtration. [Norme ONGC (Office des normes générales du Canada) 148.1, septembre 1994.]  3, record 5, French, - ouverture%20de%20filtration

Record number: 5, Textual support number: 1 OBS

L'ouverture O_f de filtration du géotextile est conventionnellement exprimée par le d₉₅ du sol.  1, record 5, French, - ouverture%20de%20filtration

Record number: 5, Textual support number: 2 OBS

On parle d'ouverture de filtration déterminée par tamisage à sec (en anglais : AOS; apparent opening size) et d'ouverture de filtration déterminée par tamisage hydrodynamique (en anglais : FOS; filtration opening size). L'expression «diamètre d'ouverture de filtration» est pléonastique. Renseignements obtenus d'un professeur de l'École polytechnique de Montréal, qui donne un cours intitulé «Mécanique des sols expérimentale».  5, record 5, French, - ouverture%20de%20filtration

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A filter of graded porosity, usually made of nitrocellulose. It may be used to sterilize media, to prepare culture filtrates, and to enumerate bacteria in dilute suspensions, as in water bacteriology, by collection on the filter followed by its incubation in contact with the surface of a solid medium.  2, record 6, English, - membrane%20filter

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Membrane très poreuse de nitrocellulose très utilisée en microbiologie pour la détection de nombreux agents pathogènes.  2, record 6, French, - membrane%20filtrante

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Grain-size distribution of a graded aggregate filter creates its pore structure which, in turm, controls filtration performance. There are universally accepted criteria for specifying the grain-size distribution of aggregate filters that relate particle size of a graded aggregate to that of the protected soil.... There are no well-established filter criteria for geotextiles.  2, record 7, English, - filter%20criterion

Record number: 7, Textual support number: 1 OBS

Criterion: Plural: criteria, criterions.  3, record 7, English, - filter%20criterion

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Drainage de parois (...) Le rôle essentiellement hydraulique que remplit le géotextile conduit à le dimensionner d'une part sur la base des débits à collecter et à évacuer et d'autre part en appliquant les critères de filtration en remarquant que le remblai qui recouvre le drain est souvent de faible compacité. Pour ne pas mettre en charge le géotextile, la conduite d'évacuation sera dimensionnée correctement; (...)  1, record 7, French, - crit%C3%A8re%20de%20filtration

Record number: 7, Textual support number: 2 CONT

D'une manière générale, la stricte application des critères de filtration définis par les divers organismes nationaux prend en compte les effets à long terme du colmatage minéral et donc limite les risques de non-fonctionnement des réseaux de drainage.  1, record 7, French, - crit%C3%A8re%20de%20filtration

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

The movement by mechanical action or hydraulic flow of soil particles into the voids of a fabric and retention therein, thereby reducing the hydraulic conductivity of a geotextile.  2, record 8, English, - clogging

Record number: 8, Textual support number: 1 CONT

Clogging, blocking and blinding. If the geotextile pore openings are slightly too small, then there will be insufficient initial wash-through of fine soil particles to promote the rapid formation of an efficient graded filter in the adjacent soil. Where the geotextile pore openings are even smaller, then there is a serious risk that either blinding, severe blocking or severe clogging will develop with time. Blocking is where soil particles resting on the surface of the geotextile, either totally or partially obstruct the pore openings.... Blinding is a special form of severe blocking, where the soil grading permits the suffusion of fine soil particles which are too large to pass through the geotextile.... Where the size of many of the soil particles is very close to that of the geotextile pore openings, then they are likely to enter the pores and become trapped within the geotextile. This can cause severe clogging which is most likely to arise in thick non-woven geotextiles with a complex pore structure.  3, record 8, English, - clogging

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

Il existe deux risques majeurs de colmatage : le "clogging", qui est provoqué par la pénétration des particules à l'intérieur du géotextile (généralement les non-tissés) et donc réduit la perméabilité de ce dernier. [...] le "blocking", qui est l'obturation des canaux au point de passage du fluide dans le géotextile.  1, record 8, French, - clogging

Record number: 8, Textual support number: 1 OBS

Colmatage : Obturation, progressive ou non, d'une couche poreuse ou fibreuse ou d'un appareil par dépôt de particules solides ou liquides.  2, record 8, French, - clogging

Record number: 8, Textual support number: 2 OBS

Seule la source GIGUT semble utiliser le terme "clogging" comme spécifique par rapport au terme plus courant et plus large "colmatage".  3, record 8, French, - clogging

Record 8,  Textual support,  Spanish